MAX312-314F Datasheet by Analog Devices Inc./Maxim Integrated

Datasheet Feedback/Errors

[VI/JXI/VI FH—H—H—H—‘ﬂrlﬂ LILILILILILILILI lM/JXIIVI

General Description

The MAX312F/MAX313F/MAX314F are quad, single-

pole/single-throw (SPST), fault-protected analog switch-

es. They are pin compatible with the industry-standard

nonprotected MAX312/MAX313/MAX314. These switch-

es feature fault-protected inputs and Rail-to-Railsignal-

handling capability. All analog signal terminals are pro-

tected from overvoltage faults up to ±36V with power on

and up to ±40V with power off. During a fault condition,

the COM_, NO_, or NC_ terminal becomes an open cir-

cuit and only microamperes of leakage current flow from

the source. On-resistance is 10Ω(max) and is matched

between switches to 0.5Ω(max) at +25°C.

The MAX312F has four normally closed (NC) switches.

The MAX313F has four normally open (NO) switches.

The MAX314F has two NC and two NO switches. These

CMOS switches operate with dual power supplies rang-

ing from ±4.5V to ±20V or a single supply between +9V

and +36V. All digital inputs have +0.8V and +2.4V logic

thresholds, ensuring both TTL and CMOS logic com-

patibility when using ±15V or a single +12V supply.

For supply voltages of ±5V, +5V, and +3V, refer to the

MAX4711/MAX4712/MAX4713 data sheet.

Applications

Communications Systems

Signal Routing

Test Equipment

Data Acquisition

Industrial and Process Control Systems

Avionics

Redundant/Backup Systems

ATE

Hot Swap

Features

♦No Power-Supply Sequencing Required

♦Rail-to-Rail Signal Handling

♦All Switches Off with Power Off

♦All Switches Off when V+ is Off and V- is On

♦±40V Fault Protection with Power Off

♦±36V Fault Protection with ±15V Supplies

♦Control Line Fault Protection from

V- - 0.3V to V- + 40V

♦Pin Compatible with Industry-Standard

DG411/DG412/DG413

♦600ns (typ) Fault Response Time

♦10Ω(max) RON with ±15V Supplies

♦±4.5V to ±20V Dual Supplies

♦+9V to +36V Single Supply

♦TTL- and CMOS-Compatible Logic Inputs with

±15V or Single +9V to +15V Supplies

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

19-2737; Rev 0; 1/03

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX312FESE

-40°C to +85°C 16 SO

MAX312FEPE

-40°C to +85°C 16 Plastic DIP

N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC 0 INPUT.

ALL SWITCHES ARE OFF WITH POWER REMOVED.

TOP VIEW

DIP/SO

MAX312F

LOGIC SWITCH

OFF

IN2

COM2

NC2

V+

V-

NC1

COM1

IN1

MAX312F

N.C.

NC3

COM3

IN3

IN4

COM4

NC4

GND

Pin Configurations

________________________________________________________________ Maxim Integrated Products 1

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

Pin Configurations continued at end of data sheet.

Functional Diagram appears at end of data sheet.

Ordering Information continued at end of data sheet.

I-Il - °<:-=\i-ho -=""><:-=\i-' -="" 5“...="" [maxi/vi="">

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

(Voltages Referenced to GND.)

V+ ...........................................................................-0.3V to +44V

V- ............................................................................-44V to +0.3V

V+ to V-...................................................................-0.3V to +44V

IN_ ......................................................... (V- - 0.3V) to (V- + 40V)

NO_, NC_ to COM_ (Note 1) .................................. -40V to +40V

COM_, NO_, NC_ Voltage with

Power On (Note 1).............................................. -36V to +36V

COM_, NO_, NC_ Voltage with

Power Off (Note 1).............................................. -40V to +40V

Peak Current COM_, NO_, NC_

(pulsed at 1ms, 10% duty cycle) ................................±300mA

Continuous Current (any other terminal).......................... ±30mA

Continuous Current (COM_, NO_, NC_).........................±100mA

Continuous Power Dissipation (TA= +70°C)

16-Pin SO (derate 8.7mW/°C above +70°C)................696mW

16-Pin Plastic DIP (derate 10.53mW/°C

above +70°C) ........................................................ 842mW

Operating Temperature Range .......................... -40°C to +85°C

Junction Temperature .................................................... +150°C

Storage Temperature Range ........................... -65°C to +160°C

Lead Temperature (soldering, 10s) ............................... +300°C

ELECTRICAL CHARACTERISTICS—±15V Dual Supplies

(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at

TA= +25°C.) (Notes 2, 3)

PARAMETER

SYM B O L

CONDITIONS TA

MIN

TYP

MAX

UNITS

ANALOG SWITCH

Fault-Free Analog Signal Range

C OM _,

N O_

, V

N C _

EV- V+V

+25°C

810

On-Resistance RON ICOM_ = 10mA;

VNO_, VNC_ = ±10V E13

Ω

+25°C 0.05

0.5

On-Resistance Match Between

Channels (Note 4) ∆RON ICOM_ = 10mA;

VNO_, VNC_ = ±10V E

0.75

Ω

+25°C 0.25

On-Resistance Flatness

(Note 5)

RFLAT

(

)

ICOM_ = 10mA;

VNO_, VNC_ = ±5V, 0V E

1.25

Ω

+25°C

-1 +1

NO_, NC_ Off-Leakage Current

(Note 6)

INO_(OFF),

INC_

(

OFF

)

VCOM_ = ±10V;

VNO_, VNC_ = ±10V E -60 +60 nA

+25°C

-1 +1

COM_ Off-Leakage Current

(Note 6)

ICOM_

(

OFF

)

VCOM_ = ±10V;

VNO_, VNC_ = ±10V E -60 +60 nA

+25°C

-2 +2

COM_ On-Leakage Current

(Note 6)

ICOM_

(

)

VCOM_ = ±10V;

VNO_, VNC_ = ±10V or floating E -60 +60 nA

FAULT

V+ = +15V, V- = -15V E -36 +36

V+ = 0V, V- = -15V E -36 +36

Fault-Protected Analog Signal

Range

VCOM_,

VNO_

VNC_

V+ = V- = 0V E -40 +40

+25°C

-1 +1

NO_ or NC_ Off-Leakage

Current (Note 6)

INO_(OFF),

INC_

(

OFF

)

VNO_, VNC_ = ±36V; V+ = +15V,

0V; V- = -15V E -10 +10 µA

+25°C

-1 +1

COM_ Off-Leakage Current

(Note 6)

ICOM_

(

OFF

)

VCOM_ = ±36V; V+ = +15V, 0V;

V- = -15V E -10 +10 µA

Note 1: COM_, NO_, and NC_ pins are fault protected. Signals on COM_, NO_, and NC_ exceeding -36V to +36V may damage the

device during power-on conditions. When the power is off, the maximum range is -40V to +40V.

[VIAXIIVI

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued)

(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at

TA= +25°C.) (Notes 2, 3)

PARAMETER

SYM B O L

CONDITIONS TA

MIN

TYP

MAX

UNITS

+25°C

-1 +1

NO_ or NC_ Leakage Current

(Note 6)

INO_, INC_ VNO_, VNC_ = ±40V; V+ = V- = 0V

E -10 +10 µA

+25°C

-1 +1

COM_ Leakage Current

(Note 6) ICOM_ VCOM_ = ±40V; V+ = V- = 0V E -10 +10 µA

Fault-Trip Threshold E

V- - 0.4 V+ + 0.4

± Fault Response Time tRES VNO_, VNC_ = ±36V; RL = 300ΩE

600

± Fault Recovery Time tREC VNO_, VNC_ = ±36V; RL = 300ΩE1µs

SWITCH DYNAMICS

+25°C 115

225

Turn-On Time tON VNO_ or VNC_ = ±10V, RL = 300Ω,

CL = 35pF, Figure 2 E 275 ns

+25°C

70 185

Turn-Off Time tOFF VNO_ or VNC_ = ±10V, RL = 300Ω,

CL = 35pF, Figure 2 E 235 ns

+25°C

545

Break-Before-Make Time Delay

(MAX314F Only) (Note 7) tBBM VNO_ or VNC_ = ±10V, RL = 100Ω,

CL = 10pF, Figure 3 E2 ns

Charge Injection Q V

GE N

= 0V , RGE N

= 0Ω, C

= 1nF,

Figure 4

+25°C

70 pC

NO_ or NC_ Off-Capacitance

CN_

(

OFF

)

f = 1MHz, Figure 5

+25°C

20 pF

COM_ Off-Capacitance

CCOM_

(

OFF

)

f = 1MHz, Figure 5

+25°C

20 pF

COM_ On-Capacitance

CCOM_

(

)

f = 1MHz, Figure 5

+25°C

43 pF

Off-Isolation (Note 8) VISO f = 1MHz, RL = 50Ω, CL = 15pF,

PIN = 0dBm, Figure 6

+25°C

-55 dB

Channel-to-Channel Crosstalk

(Note 9) VCT f = 1MHz, RL = 50Ω, CL = 15pF,

PIN = 0dBm, Figure 6

+25°C -104

LOGIC INPUT

Input Logic High VIH E 2.4 V

Input Logic Low VIL E 0.8 V

Input Leakage Current IIN VIN_ = 0V or V+ E -1 +1 µA

POWER SUPPLY

Power-Supply Range V+, V- E

±4.5

±20 V

+25°C 340

500

All VIN_ = +5V, VCOM_ = 0V E 700

+25°C 140

250

V+ Supply Current I+

All VIN_ = 0V or V+, VCOM_ = 0V E 350

µA

I-Il - 5<:-=\i-ho -=""><:-=\i-' -="" 5“...="" [maxi/vi="">

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

4 _______________________________________________________________________________________

PARAMETER

SYM B O L

CONDITIONS TA

MIN

TYP

MAX

UNITS

ANALOG SWITCH

Fault-Free Analog Signal Range

VCOM_,

VNO_, VNC_

E 0 V+ V

+25°C

16 25

On-Resistance RON ICOM_ = 10mA;

VNO_, VNC_ = +10V E30

Ω

+25°C

0.4 1.5

On-Resistance Match Between

Channels (Note 4) ∆RON ICOM_ = 10mA;

VNO_, VNC_ = +10V E2

Ω

+25°C

On-Resistance Flatness

RFLAT

(

)

ICOM_ = 10mA;

VNO_, VNC_ = +2V, +6V, +10V E7

Ω

+25°C

-1 +1

NO_, NC_ Off-Leakage Current

(Note 6)

INO_(OFF),

INC_

(

OFF

)

VCOM_ = +1V, +10V;

VNO_, VNC_ = +10V, +1V E -60

+60

+25°C

-1 +1

COM_ Off-Leakage Current

(Note 6)

ICOM_

(

OFF

)

VCOM_ = +1V, +10V;

VNO_, VNC_ = +10V, +1V E -60

+60

+25°C

-2 +2

COM_ On-Leakage Current

(Note 6)

ICOM_

(

)

VCOM_ = +1V, +10V;

VNO_, VNC_ = +1V, +10V,

or floating E -60

+60

FAULT

V+ = +12V, V- = 0V E -36

+36

Fault-Protected Analog

Signal Range

VCOM_,

VNO_, VNC_

V+ = V- = 0V E -40

+40

+25°C

-1 +1

NO_ or NC_ Off-Leakage

Current (Note 6)

INO_(OFF),

INC_

(

OFF

)

VNO_, VNC_ = ±36V; V+ = +12V;

V- = 0V E -10

+10

µA

+25°C

-1 +1

COM_ Off-Leakage Current

(Note 6)

ICOM_

(

OFF

)

VNO_, VNC_ = ±36V; V+ = +12V;

V- = 0V E -10

+10

µA

+25°C

-1 +1

NO_ or NC_ Leakage Current

(Note 6)

INO_, INC_ V+ = V- = 0V; VNO_, VNC_ = ±40V

E -10

+10

µA

PARAMETER SYM B O L CONDITIONS TAMIN TYP MAX UNITS

+25°C 140 200

All VIN_ = +5V, VCOM_ = 0V E 300

+25°C 140 250

V- Supply Current I-

All VIN_ = 0V or V+, VCOM_ = 0V E 350

µA

+25°C 200 300

All VIN_ = +5V, VCOM_ = 0V E 400

+25°C01

GND Supply Current IGND

All VIN_ = 0V or V+, VCOM_ = 0V E10

µA

ELECTRICAL CHARACTERISTICS—Single +12V Supply

(V+ = +12V, V- = 0V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at

TA= +25°C.) (Notes 2, 3)

ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued)

(V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at

TA= +25°C.) (Notes 2, 3)

[VIAXIIVI

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

_______________________________________________________________________________________ 5

Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.

Note 3: Electrical specifications at -40°C are guaranteed by design and not production tested.

Note 4: ∆RON = RON(MAX) - RON(MIN).

Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance over the specified analog

signal range.

Note 6: Single-supply leakage parameters are guaranteed by testing with dual supplies at the maximum rated temperature.

Note 7: Guaranteed by design.

Note 8: Off-isolation = 20 log10 [VCOM/(VNC or VNO)], VNC or VNO = output, VCOM = input to off switch.

Note 9: Between any two switches.

ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)

(V+ = +12V, V- = 0V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at

TA= +25°C.) (Notes 2, 3)

PARAMETER

SYM B O L

CONDITIONS TA

MIN TYP MAX

UNITS

+25°C

-1 +1

COM_ Leakage Current

(Note 6) ICOM_

V+ = V- = 0V; VNO_, VNC_ = ±40V

E -10

+10

µA

Fault Response Time tRES VNO_, VNC_ = +36V; RL = 300ΩE

200

Fault Recovery Time tREC VNO_, VNC_ = +36V; RL = 300ΩE1µs

SWITCH DYNAMICS

+25°C 140 325

Turn-On Time tON VNO_ or VNC_ = +10V, RL = 300Ω,

CL = 35pF, Figure 2 E

425

+25°C

175

Turn-Off Time tOFF VNO_ or VNC_ = +10V, RL = 300Ω,

CL = 35pF, Figure 2 E

225

+25°C

10 65

Break-Before-Make Time Delay

(MAX314F Only) (Note 6) tBBM VNO_ or VNC_ = +10V, RL = 100Ω,

CL = 10pF, Figure 3 E5 ns

Charge Injection Q VGEN = 0V, RGEN = 0Ω, CL = 1nF,

Figure 4

+25°C

-10 pC

LOGIC INPUT

Input Logic High VIH E 2.4 V

Input Logic Low VIL E 0.8 V

Input Leakage Current

(Note 6) IIN VIN_ = 0V or V+ E -1 +1 µA

POWER SUPPLY

Power-Supply Range V+ E +9

+36

+25°C 160 300

All VIN_ = +5V, VCOM_ = +6V E

400

+25°C

150

V+ Supply Current I+

All VIN_ = 0V or V+, VCOM_ = +6V

250

µA

I-Il - °<:-=\i-ho -=""><:-=\i-' -="" 5“...="" [vi/jxiivi="">

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

6 _______________________________________________________________________________________

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

100

300

200

400

500

TURN-ON/TURN-OFF TIME

vs. SUPPLY VOLTAGE (DUAL SUPPLIES)

MAX312F/13F/14F toc09

SUPPLY VOLTAGE (V+, V-)

tON/tOFF (ns)

5101520

tON

tOFF

1.0

1.5

2.0

2.5

3.0

0 102030515253540

LOGIC-LEVEL THRESHOLD VOLTAGE

vs. SUPPLY VOLTAGE

MAX312F/13F/14F toc08

SUPPLY VOLTAGE (V)

THRESHOLD VOLTAGE (V)

DUAL SUPPLIES

SINGLE SUPPLY

-300

-200

-100

100

200

300

400

500

-40 -15 10 35 60 85

SUPPLY CURRENT vs. TEMPERATURE

MAX312F/13F/14F toc07

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

DUAL SUPPLIES:

V+ = +15V, V- = -15V, VIN_ = +5V

I+

I-

IGND

-100

-50

100

150

200

-15 -5 0-10 5 10 15

CHARGE INJECTION vs. VCOM

MAX312F/13F/14F toc06

VCOM (V)

Q (pC)

DUAL SUPPLIES: ±15V

SINGLE SUPPLY: +12V

ON/OFF-LEAKAGE CURRENT

vs. TEMPERATURE

MAX312F/13F/14F toc05

TEMPERATURE (°C)

LEAKAGE CURRENT (pA)

603510-15

0.1

100

1000

10,000

0.01

-40 85

DUAL SUPPLIES:

V+ = +15V, V- = -15V

INO(OFF),

INC(OFF)

ICOM(OFF)

ICOM(ON)

042681012

ON-RESISTANCE vs. VCOM

AND TEMPERATURE

(SINGLE SUPPLY)

MAX312F/13F/14F toc04

VCOM (V)

RON (Ω)

TA = +85°C

TA = +25°C

TA = -40°C

V+ = +12V

V- = 0V

012186 243036

ON-RESISTANCE vs. VCOM

(SINGLE SUPPLY)

MAX312F/13F/14F toc03

VCOM (V)

RON (Ω)

V+ = +36V

V- = 0V

V+ = +28V

V- = 0V

V+ = +24V

V- = 0V

V+ = +9V

V- = 0V

V+ = +12V

V- = 0V

V+ = +15V

V- = 0V

-15 -5-10 0 5 10 15

ON-RESISTANCE vs. VCOM

AND TEMPERATURE

(DUAL SUPPLIES)

MAX312F/13F/14F toc02

VCOM (V)

RON (Ω)

TA = +85°C

V+ = +15V

V- = -15V

TA = +25°C

TA = -40°C

-20 -10 -5-15 0 5 10 15 20

ON-RESISTANCE vs. VCOM

(DUAL SUPPLIES)

MAX312F/13F/14F toc01

VCOM (V)

RON (Ω)

V+ = +5V

V- = -5V

V+ = +10V

V- = -10V

V+ = +15V

V- = -15V

V+ = +20V

V- = -20V

[VI/JXIIVI

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

-200

-150

-100

-50

100

150

200

-60 -20-40 0 204060

FAULT CURRENT vs. FAULT VOLTAGE

(SINGLE SUPPLY)

MAX312F/13F/14F toc16

VCOM (V)

ICOM (µA)

+12V SINGLE SUPPLY

FOR 0V < VCOM < VSUPPLY,

ICOM = VCOM/RL

-200

-150

-100

-50

100

150

200

-60 -20-40 0 204060

FAULT CURRENT vs. FAULT VOLTAGE

(DUAL SUPPLIES)

MAX312F/13F/14F toc15

VCOM (V)

ICOM (µA)

DUAL SUPPLIES:

V+ = +15V, V- = -15V

FOR |VCOM| < VSUPPLY,

ICOM = VCOM/RL

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

MAX312F/13F/14F toc14

FREQUENCY (Hz)

THD + N (%)

1k100

0.001

10k10

0.01

0.0001

±15V DUAL SUPPLIES:

IN = OUT = 600Ω, VP-P = 5V

FREQUENCY RESPONSE

MAX312F/13F/14F toc13

FREQUENCY (MHz)

LOSS (dB)

1001010.10.01

-80

-60

-40

-20

-100

0.001 1000

V+ = +15V, V- = -15V

-120

ON-RESPONSE

OFF-ISOLATION

CROSSTALK

120

160

200

-40 10-15 35 60 85

MAX312F/13F/14F toc12

TEMPERATURE (°C)

TURN-ON/TURN-OFF TIME

vs. TEMPERATURE (SINGLE SUPPLY)

tON/tOFF (ns)

tOFF

tON

V+ = +12V, V- = 0V

150

100

200

250

-40 10-15 35 60 85

MAX312F/13F/14F toc11

TEMPERATURE (°C)

TURN-ON/TURN-OFF TIME

vs. TEMPERATURE (DUAL SUPPLIES)

tON/tOFF (ns)

tOFF

tON

DUAL SUPPLIES: ±15V

120

160

200

TURN-ON/TURN-OFF TIME

vs. SUPPLY VOLTAGE (SINGLE SUPPLY)

MAX312F/13F/14F toc10

SUPPLY VOLTAGE (V+)

tON/tOFF (ns)

9182736

tON

tOFF

V- = GND

Inl- - ho<:-=\i-ho -=""><:-=\i-' -="" 51“...="" [vii]="" x="">

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

200µs/div

FAULT RESPONSE

(V+ = 0V, V- = -15V)

VNO_, VNC_

INPUT

GND

MAX312F/13F/14F toc22

VCOM_

OUTPUT

500mV/div

GND

+25V

-25V

1µs/div

FAULT RESPONSE TIME

(NEGATIVE INPUT)

VNO_, VNC_

INPUT

GND

MAX312F/13F/14F toc21

VCOM_

OUTPUT

10V/div

GND

400ns/div

FAULT RESPONSE TIME

(POSITIVE INPUT)

VNO_, VNC_

INPUT

GND

MAX312F/13F/14F toc20

VCOM_

OUTPUT

10V/div

GND

1µs/div

FAULT RECOVERY TIME

(NEGATIVE INPUT)

-25V

VNO_, VNC_

INPUT

GND

MAX312F/13F/14F toc19

VCOM_

OUTPUT

GND

-5V

1µs/div

FAULT RECOVERY TIME (POSITIVE INPUT)

+25V

VNO_, VNC_

INPUT

GND

+5V

GND

MAX312F/13F/14F toc18

VCOM_

OUTPUT

2ms/div

INPUT OVERVOLTAGE vs. OUTPUT

+25V

VNO_, VNC_

INPUT

GND

-25V

+15V

GND

-15V

MAX312F/13F/14F toc17

[VIAXIIVI

Detailed Description

The MAX312F/MAX313F/MAX314F are fault-protected

CMOS analog switches with unique operation and

construction. These switches differ considerably from

traditional fault-protection switches, with several advan-

tages. First, they are constructed with two parallel

FETs, allowing very low on-resistance when the switch

is on. Second, they allow signals on the NO_ or NC_

pins that are within, or slightly beyond, the supply rails

to be passed through the switch to the COM_ terminal

(or vice versa), allowing true rail-to-rail signal operation.

Third, the MAX312F/MAX313F/MAX314F have the same

fault-protection performance on any of the NO_, NC_,

or COM_ switch inputs. Operation is identical for both

fault polarities. The fault protection extends to ±36V

from GND with ±15V supplies.

During a fault condition, the particular overvoltage input

(COM_, NO_, NC_) pin becomes high impedance

regardless of the switch state or load resistance. When

power is removed, the fault protection is still in effect. In

this case, the COM_, NO_, or NC_ terminals are a virtu-

al open circuit. The fault can be up to ±40V with power

off. The switches turn off when V+ is not powered,

regardless of V-.

Pin Compatibility

These switches have identical pinouts to common non-

fault-protected CMOS switches. They allow for carefree

direct replacement in existing printed circuit boards

since the NO_, NC_, and COM_ pins of each switch are

fault protected.

Internal Construction

Internal construction is shown in Figure 1, with the ana-

log signal paths shown in bold. A single NO switch is

shown. The NC configuration is identical except the

logic-level translator becomes an inverter. The analog

switch is formed by the parallel combination of N-chan-

nel FET (N1) and P-channel FET (P1), which are driven

on and off simultaneously according to the input fault

condition and the logic-level state.

Normal Operation

Two comparators continuously compare the voltage on

the COM_, NO_, and NC_ pins with V+ and V-. When

the signal on COM_, NO_, or NC_ is between V+ and

V-, the switch acts normally, with FETs N1 and P1 turn-

ing on and off in response to IN_ signals. The parallel

combination of N1 and P1 forms a low-value resistor

between NO_ (or NC_) and COM_ so that signals pass

equally well in either direction.

Positive Fault Condition

When the signal on NO_ (or NC_) and COM_ exceeds

V+, the high-fault comparator output is high, turning off

FETs N1 and P1. This makes the NO_ (or NC_) and

COM_ pins high impedance regardless of the switch

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

_______________________________________________________________________________________ 9

MAX312F

MAX313F MAX314F

NAME FUNCTION

1, 16, 9, 8

1, 16, 9, 8 1, 16, 9, 8

IN1, IN2, IN3, IN4 Logic-Control Digital Inputs

2, 15, 10, 7

2, 15, 10, 7 2, 15, 10, 7

COM1, COM2, COM3,

COM4 Analog Switch Common Terminals

3, 14, 11, 6

——

NC1, NC2, NC3, NC4

Analog Switch Normally Closed Terminals

—

3, 14, 11, 6

—

NO1, NO2, NO3, NO4

Analog Switch Normally Open Terminals

——3, 6 NO1, NO4 Analog Switch Normally Open Terminals

——14, 11 NC2, NC3 Analog Switch Normally Closed Terminals

444 V-

Negative-Supply Voltage Input. Connect to GND for single-

supply operation. Bypass with a 0.1µF capacitor to GND.

5 5 5 GND Ground. Connect to digital ground.

12 12 12 N.C. No Connection. Not internally connected.

13 13 13 V+ Positive-Supply Voltage Input. Bypass with a 0.1µF capacitor

to GND.

Pin Description

I-Il - °<:-=\i-ho -=""><:-=\i-' -="" 5“...="" [maxi/vi="">

MAX312F/MAX313F/MAX314F

state. If the switch state is off, all FETs are turned off and

both NO_ (or NC_) and COM_ are high impedance.

Negative Fault Condition

When the signal on NO_ (or NC_) and COM_ exceeds V-,

the low-fault comparator output is high, turning off FETs

N1 and P1. This makes the NO_ (or NC_) and COM_ pins

high impedance regardless of the switch state. If the

switch state is off, all FETs are turned off and both NO_

(or NC_) and COM_ are high impedance.

Transient Fault Response and Recovery

When a fast rise-time and fall-time transient on NO_,

NC_, or COM_ exceeds V+ or V-, the output follows the

input to the supply rail with only a few nanoseconds

delay. This delay is due to the switch on-resistance and

circuit capacitance to ground. When the input transient

returns to within the supply rails, however, there is a

longer output recovery time delay. For positive faults,

the recovery time is typically 1µs. For negative faults,

the recovery time is typically 0.6µs. These values

depend on the output resistance and capacitance, and

are not production tested or guaranteed. The delays

are not dependent on the fault amplitude. Higher load

resistance and capacitance increase recovery times.

Fault-Protection Voltage and Power Off

The maximum fault voltage on the NO_ (or NC_) and

COM_ pins is ±36V with power applied and ±40V with

power off.

Failure Modes

Exceeding the fault-protection voltage limits on NO_,

NC_, or COM_, even for very short periods, can cause

the device to fail (see the Absolute Maximum Ratings).

The failure modes may not be obvious, and failure in

one switch may or may not affect other switches in the

same package.

Ground

There is no galvanic connection between the analog

signal paths and GND. The analog signal paths consist

of an N-channel and P-channel MOSFET with their

sources and drains paralleled and their gates driven

out of phase to V+ and V- by the logic-level translators.

However, the potential of the analog signals must be

defined or at least limited with respect to GND.

V+ and GND power the internal logic and logic-level

translators and set the input logic thresholds. The logic-

level translators convert the logic levels to switched V+

and V- signals to drive the gates of the analog switch-

es. This drive signal is the only connection between the

power supplies and the analog signals.

Bipolar Supplies

The MAX312F/MAX313F/MAX314F operate with bipolar

supplies between ±4.5V and ±20V. The V+ and V- sup-

plies need not be symmetrical, but their difference can-

not exceed the absolute maximum rating of 44V.

Single Supply

The MAX312F/MAX313F/MAX314F operate from a sin-

gle supply between +9V and +36V when V- is connect-

ed to GND.

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

10 ______________________________________________________________________________________

Ordering Information (continued)

PART TEMP RANGE PIN-PACKAGE

MAX313FESE

-40°C to +85°C 16 SO

MAX313FEPE

-40°C to +85°C 16 Plastic DIP

MAX314FESE

-40°C to +85°C 16 SO

MAX314FEPE

-40°C to +85°C 16 Plastic DIP

Chip Information

TRANSISTOR COUNT: 251

PROCESS: CMOS

SUBSTRATE CONNECTED TO: V+

7 T K) 1* i:;;::::1:::;:;: g: T J i .. . [MAXI/III [MAXI/III

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

______________________________________________________________________________________ 11

Test Circuits/Timing Diagrams

Figure 1. Functional Diagram

NORMALLY OPEN SWITCH CONSTRUCTION

COM_

MAX312F

MAX313F

MAX314F

LOW

FAULT

HIGH

FAULT

V+

NO_

IN_

GND

ESD DIODE

V-

Figure 2. Switch Turn-On/Turn-Off Times

50%

tON

VIN_

90%

tOFF

VIN_

V+

GND

V+ NO_ OR NC_

COM_

10V

RLCL

V-

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

10V

VOUT

VOUT 90%

MAX312F

MAX313F

MAX314F

"IRAQ l ‘I'INIHAO l OI'INIHAO l ‘1'- gt MAXIM 3' ﬂ $ \ MW. WW1; ll/l/lXI/Vl a; “ $ \ [MAXI/VI

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

12 ______________________________________________________________________________________

Test Circuits/Timing Diagrams (continued)

Figure 3. MAX314F Break-Before-Make Interval

VIN_

V+

GND

V+ NO_

COM_

10V

RLCL

V-

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

VOUT

COM_

NC_

IN_

50%

VNO_, VNC_

VOUT

VIN_

90%

tBBM

tR < 5ns

tF < 5ns

MAX314F

Figure 4. Charge Injection

VIN_

V+

GND

V+ NO_ OR NC_

COM_

V-

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

VOUT

IN_

RGEN

VGEN

∆VOUT

VIN_

VOUT

∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE-

TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.

Q = ∆VOUT x CL

MAX312F

MAX313F

MAX314F

Figure 5. COM_, NO_, NC_ Capacitance

V+

GND

V+ NO_

COM_

V-

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

IN_

NC_

V+

1MHz

CAPACITANCE

ANALYZER

MAX312F

MAX313F

MAX314F

If é L<,>W% i ; 11+ [MAXIM 4 1 5% mg C» \’; <1—j 333m333]="" gm="" e="" em="" 3="" keeeeeek="" [maxi/iii="">

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

______________________________________________________________________________________ 13

Test Circuits/Timing Diagrams (continued)

Figure 6. Frequency Response, Off-Isolation, and Crosstalk

V+

GND

V+ COM_

NO_, NC_

V-

MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN AT SOCKET TERMINALS.

OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINALS.

ON-RESPONSE IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINALS.

CROSSTALK IS MEASURED BETWEEN COM_ TERMINALS WITH ALL SWITCHES ON.

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

IN_

0.1µF

VIN

VOUT

NETWORK

ANALYZER

50Ω50Ω

MEAS REF

50Ω

50Ω RESISTOR

ONLY NEEDED

FOR CROSSTALK

AND ISOLATION

3.0V

MAX312F

MAX313F

MAX314F

N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC 0 INPUT.

ALL SWITCHES ARE OFF WITH POWER REMOVED.

DIP/SO

MAX313F

LOGIC SWITCH

OFF

TOP VIEW

DIP/SO

MAX314F

LOGIC SWITCHES

1, 4

OFF

SWITCHES

2, 3

OFF

IN2

COM2

NC2

V+

V-

NO1

COM1

IN1

N.C.

NC3

COM3

IN3

IN4

COM4

NO4

GND

IN2

COM2

NO2

V+

V-

NO1

COM1

IN1

N.C.

NO3

COM3

IN3

IN4

COM4

NO4

GND

MAX313F MAX314F

Pin Configurations (continued)

"IRAQ l ‘r/mrlna l ar/muno I 'II' go to wwwImaxim-icsomlpackages * \‘01 N 25% D 1 —E1— . t )3 i \_I A A2 7 I f ‘v. ‘ I 1 1 A3 I‘: x“, 1 A1 1 1 \ii -15* *‘ e ‘ » «Bl c - .5 keAa EB INCHES MILLIMETERS INCHES MILLIMETEPS MIN MAX MIN MAX MIN MAX MIN MAX N M3001 A --- 01180 --- 41572 I] 01345 01390 884 9.91 8 AE A1 0015 ,2, 038 ,2, D 01735 01765 18167 19143 14 AC A2 0125 01175 3‘18 445 I] 01745 01765 18192 19143 16 AA A3 0055 0080 1‘40 2‘03 0 01885 01915 22148 23124 18 AD B 01015 01022 0381 0‘56 0 11015 1.045 25178 26154 20 AE B1 0045 0065 1‘14 165 D 114 1.265 28196 32113 24 AF C 01008 01014 02 01355 D 11360 1.380 34154 35105 28 *5 01 0005 0080 0‘13 203 E 01300 01325 762 826 NDIEX‘ E1 0240 0310 am 787 % SEEDDEJEL E'éciﬁ‘éﬁzm'ii‘u‘éﬁé'? 9 0‘10“ BSD 35“ E39 3 EENEEEEEI’Ns‘SRk‘NE‘E'N" mmm 9A 0300 BSC 768 BSC 4' MEETS JEDEC MSﬂm’XX AS SHEIWN QB 0400 BSD 1“ 15 ESQ 5 ‘SquﬁfﬂéETEAEEEEE ms Ag L 01115 101150 29211381 5: N : mm Dr m E MQBHEMVEIPACKAGE FAMILY DUTLINE PDIP 300] [MAXI/III

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

14 ______________________________________________________________________________________

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,

go to www.maxim-ic.com/packages.)

PDIPN.EPS

go to www.maxim-icmomlpackages W— ﬁﬁﬁﬁﬁﬁﬁﬁi NDTES 1. DLE DD NUT INCLUDE MEILD FLASH, 2 MEILD FLASH EIR PREITRUSIUNS NUT m EXCEED 15mm (006') 3 CEINTRDLLING DIMENSIDM MILLIMETER 4 MEETS JEDEE M37012 AC chHE: MILLIMETER: 004 MIN MAX MIN MAX 0053 0 069 135 1.75 0 004 u mu 010 0 25 0 014 0 019 0.35 0 49 u 007 u 010 019 u 25 (Less 0 394 9.80 10.00 0 050 5:: 1.27 EEC 0150 0157 3.80 4.00 0 225 0 244 5.50 5.20 a 010 0 020 0 25 050 0.016 0 050 0.40 1.27 07 E” m m nrzxmmuﬂmg): [VI A X I [VI ‘ 16L (N) smc DUTLINE 2170588 B ‘A MAXIM

MAX312F/MAX313F/MAX314F

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,

go to www.maxim-ic.com/packages.)

16L SOIC.EPS

MAX312-314F Datasheet by Analog Devices Inc./Maxim Integrated

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