Datenblatt für MAX31915 von Analog Devices Inc./Maxim Integrated

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General Description

The MAX31915 translates and conditions the 24V

digital output of sensors and switches used in industrial,

process, and building automation to 5V CMOS-compatible

signals required by microcontrollers. It provides the front-

end interface circuit of a programmable logic controller

(PLC) digital input module.

The signal voltage translation is performed in conjunc-

tion with input current limiting and lowpass filtering. Input

current-limiting allows a significant reduction in power

consumed from the field-supply voltage, as compared to

traditional discrete resistor-divider implementations.

Selectable on-chip lowpass filters allow flexible debouncing

and filtering of sensor inputs based on the application.

When no filtering is selected, the IC is capable of detecting

pulses as short as 0.75µs at its field inputs.

All 8 input channels are translated to CMOS logic levels and

are presented in parallel on the eight output pins for direct

or galvanically-isolated interface with a controller ASIC or

micro.

The on-chip 5V voltage regulator can be used to power

external optocouplers, digital isolators, or other external

5V circuitry.

For ultra-low-power applications and lowest possible heat

dissipation, Maxim Integrated plans to offer a pin-compati-

ble version of this device; the MAX31914. The MAX31914

uses patent-pending circuit techniques to achieve further

reduction of power beyond what is possible by input

current limiting alone. Contact the factory for availability.

Applications

●Digital Input Modules for Programmable

Logic Controllers (PLCs)

●Industrial Automation, Building Automation

●Process Automation

Benefits and Features

●Flexible Supply Options Enables Usage in 24V, 12V,

and 5V Supplied Systems

• 7V to 36V Wide Operating Field Supply Range

• Device Can Be Optionally Powered from the Logic-

Side Using a 5V Supply

●Low Power and Low Heat Dissipation

• Very Low Quiescent Current

• Extremely Accurate and Stable Input Current Limiters

●Configurability Enables a Wide Range of Standard

and Custom Applications

• Configurable Inputs for IEC 61131-2 Input Types 1,

2, and 3 or for Standard CMOS Logic Levels

• 0.5mA to 6mA Configurable Input Current Limiting

• Selectable Input Filtering and Debounce: 0, 25µs,

0.75ms, and 3ms Settings

●High Integration Reduces BOM Count and Board Space

• 8 High-Voltage Input Channels (36V Max)

• 8 CMOS Logic Outputs for High-Speed Simultaneous

Transfer of All Input States to the Controller

• On-Chip 5V Regulator

• On-Chip Overtemperature Indicator

• On-Chip Field-Supply Voltage Monitor

• High HBM ESD Immunity on all Field Input Pins

(15kV HBM)

Ordering Information appears at end of data sheet.

MAX31915 Industrial, Octal, Digital Input Translator

19-7472; Rev 1; 4/15

EVALUATION KIT AVAILABLE

maxim integrated,

MAX31915 Industrial, Octal, Digital Input Translator

MAX31915

5V REGULATOR

24V

SENSORS

SUPPLY MONITOR

CURRENT LIMITER

INPUT CHANNEL 7

INPUT CHANNEL 0

VOLTAGE

COMP

TEMPERATURE

MONITOR

LOWPASS

FILTER

REF

5VOUT

OP1

OP8

UVFAULT

CC24V

RIREF

RT1

IN1

VTSELECT

RT8

IN8

GND

REF

FAULT

DB0

DB1

µCONTROLLER

ISOLATION

Block Diagram

Voltage on VCC24V Relative to GND ....................-0.3V to +45V

Voltage on IN1–IN8 Relative to GND

through 2.2kΩ Resistors ..................................... -45V to +45V

Voltage on DB0/DB1,

VTSELECT Relative to GND .................................-0.3V to 6V

Ambient Temperature Range ........................... -40°C to +125°C

Junction Temperature Range ........................... -40°C to +150°C

Storage Temperature Range ............................ -55°C to +125°C

Continuous Power Dissipation (TA = +70°C)

(derate 22.2mW above +70°C) ..............................1773.8mW

Soldering Temperature, Lead(Pb)-Free (reflow) ...............260°C

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

TSSOP

Junction-to-Ambient Thermal Resistance (θJA) .....45.10°C/W

Junction-to-Case Thermal Resistance (θJC) .................1°C/W

(Note 1)

(TA = -40°C to +125°C, TJ ≤ +150°C, VCC24V = 7V to 36V, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Field-Supply Curent ICC24V

IN1–IN8 = 24V, 5VOUT = open,

OP1–OP8 and all logic inputs = open 1.6 2.3 mA

Field-Supply Low Alarm Off-On VONUVLO 7 8 V

Field-Supply Low Alarm On-Off VOFFUVLO 9 10 V

Field Input Threshold, High to Low VIN1-(INF) 2.2kΩ external series resistor,

VTSELECT = logic 1, RREF = 15kΩ 7 8.4 V

Field Input Threshold, Low to High VIN1+(INF) 2.2kΩ external series resistor,

VTSELECT = logic 1, RREF = 15kΩ 9.4 10.5 V

Field Input Hysterisis VHYS1(INF) 2.2kΩ external series resistor,

VTSELECT = logic 1, RREF = 15kΩ 1 V

Field Input Threshold, High to Low VIN0-(INF) 2.2kΩ external series resistor,

VTSELECT = logic 0, RREF = 150kΩ 1.5 1.7 V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Field-Supply Voltage VCC24V Note 2 7 36 V

Field Inputs Voltage VInn Note 3 -0.3 +36 V

Logic Inputs Voltage VLOGIC -0.3 +5.5 V

Current-Limit Setting Resistor RREF

VTSELECT = logic 1 15 kΩ

VTSELECT = logic 0 150

MAX31915 Industrial, Octal, Digital Input Translator

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Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer

board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.

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.

Package Thermal Characteristics

Recommended Operating Conditions

DC Electrical Characteristics

(TA = -40°C to +125°C, TJ ≤ +150°C, VCC24V = 7V to 36V, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Field Input Threshold, Low to High VIN0+(INF) 2.2kΩ external series resistor,

VTSELECT = logic 0, RREF = 150kΩ 2.2 3.5 V

Field Input Hysterisis VHYS0(INF) 2.2kΩ external series resistor,

VTSELECT = logic 0, RREF = 150kΩ 0.5 V

Input Threshold, High to Low

(at IC Pin) VTH1-(INP) VTSELECT = logic 1, RREF = 15kΩ 3 3.4 V

Input Threshold, Low to High

(at IC Pin) VTH1+(INP) VTSELECT = logic 1, RREF = 15kΩ 4.4 5 V

Input Threshold Hysteresis

(at IC Pin) VHYS1(INP) VTSELECT = logic 1, RREF = 15kΩ 1 V

Input Threshold, High to Low

(at IC Pin) VTH0-(INP) VTSELECT = logic 0, RREF = 150kΩ 1.5 1.7 V

Input Threshold, Low to High

(at IC Pin) VTH0+(INP) VTSELECT = logic 0, RREF = 150kΩ 2.2 3.5 V

Input Threshold Hysteresis

(at IC Pin) VHYS0(INP) VTSELECT = logic 0, RREF = 150kΩ 0.5 V

Field Pin Input Resistance RINP 0.8 kΩ

Field Input Curent Limit IINLIM

RREF = 15 kΩ (Note 4),

VTSELECT = logic 1 2.26 2.45 2.72 mA

Filter Time Constant tFILTER

DB1/DB0 = 0/0: no filtering 0

DB1/DB0 = 0/1 0.008 0.025 0.038

DB1/DB0 = 1/0 0.25 0.75 1.1

DB1/DB0 = 1/1 1.0 3 4.5

Linear Regulator Output V5VOUT Max IlLOAD = 50mA 4.75 5.0 5.25 V

Regulator Line Regulation dVREGLINE ILOAD = 50mA 10 mV

Regulator Load Regulation dVREGLOAD ILOAD = 1mA to 50mA 20 mV

Logic-Low Output Voltage VOL IOL = 4mA 0.4 1.0 V

Logic-High Output Voltage VOH IOH = -4mA 4.0 V

Logic Input Leakage Curent IIL All inputs have internal pullups -50 -30 -15 µA

Overtemperature Alarm TALRM (Note 5) 135 °C

LED On-State Current RREF = 15kΩ 2.2 mA

MAX31915 Industrial, Octal, Digital Input Translator

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DC Electrical Characteristics (continued)

(TA = -40°C to +125°C, TJ ≤ +150°C, VCC24V = 7V to 36V, unless otherwise noted.)

Note 2: If a 24V supply is not available, the device can be powered through 5VOUT. In this mode of operation, the VCC24V

supply must be left unconnected. All other specifications remain identical. The field-supply alarms are asserted indicating

the absence of the 24V supply in this mode of operation.

Note 3: When using suggested external 2.2kΩ series resistors, limits of -36V to +36V apply.

Note 4: External resistor RREF can be adjusted to set any desired current limit between 0.5mA and 6mA.

Note 5: INn-to-OPn propagation delay difference between two channels on the same IC.

Note 6: Propagation delay from field input (INn) to CMOS output (OPn). Tested with a 6.5V pulse applied directly to the device INn

pins. Propagation delay is measured between the 50% transitions of the rising and falling edges.

Note 7: The propagation delay limit is 1ms maximum when VTSEL = 0.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Data Rate fIN DB0, DB1 = 0, 0 (filters disabled) 0.5 1.3 Mbps

Input Pulse Width PWIN DB0, DB1 = 0, 0 (filters disabled) 0.75 µs

Interchannel Propagation Delay

Mismatch (Interchannel Jitter) ϕint (Note 6) 25 ns

Propagation Delay tPROP

12V input applied on the field-side

through external 2.2kΩ resistors,

RREF set to 15k, VTSELECT = 1

(Notes 7, 8)

300 700 ns

Output Rise/Fall Times

(on OPn Pins) tR/F

Internally slew limited

(with CLOAD = 0–50pF) 25 ns

ESD HBM, all pins ±2 kV

HBM, IN1–IN8 with respect to GND ±15

MAX31915 Industrial, Octal, Digital Input Translator

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AC Electrical Characteristics

Typical Operating Characteristics

(TA = +25°C, RREF = 15kω, unless otherwise noted.)

CURRENT LIMIT vs. RREF

MAX31915 toc03

RREF (kI)

CURRENT LIMIT (mA)

40 50

302010

5.5

0.5

1.5

2.5

3.5

4.5

INPUT CURRENT LIMIT

vs. TEMPERATURE

MAX31915 toc04

TEMPERATURE (°C)

CURRENT INPUT (mA)

1106010

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

2.0

-40

VINn = 24V

INPUT CURRENT LIMIT

vs. FIELD-INPUT VOLTAGE

MAX31915 toc05

FIELD-INPUT VOLTAGE (V)

CURRENT INPUT (mA)

352515

0.5

1.0

1.5

2.0

2.5

3.0

VCC24V = 24V

INPUT-VOLTAGE HYSTERESIS

vs. TEMPERATURE

MAX31915 toc06

TEMPERATURE (°C)

INPUT-VOLTAGE HYSTERESIS (V)

1106010

2.8

3.0

3.2

3.4

3.6

3.8

4.0

4.2

4.4

4.6

4.8

5.0

2.6

-40

ON-OFF THRESHOLD

OFF-ON THRESHOLD

RIN = 0I

INPUT-VOLTAGE HYSTERESIS

vs. TEMPERATURE

MAX31915 toc07

TEMPERATURE (°C)

INPUT-VOLTAGE HYSTERESIS

1106010

7.8

8.2

8.0

8.4

8.6

9.0

8.8

9.2

9.4

9.6

9.8

10.0

7.6

-40

RIN = 2.2I

OFF-ON THRESHOLD

ON-OFF THRESHOLD

LDO LOAD REGULATION

MAX31915 toc08

5VOUT OUTPUT CURRENT (mA)

5VOUT VOLTAGE (V)

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

040 50302010

LDO LINE REGULATION

MAX31915 toc09

SUPPLY VOLTAGE (V)

5VOUT VOLTAGE (V)

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

6363126211611

I5VOUT = 5mA

SUPPLY CURRENT

vs. TEMPERATURE

MAX31915 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

1106010

0.5

1.0

1.5

2.0

2.5

3.0

-40

SUPPLY CURRENT

vs. VCC24V FIELD SUPPLY

MAX31915 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

342414

0.5

1.0

1.5

2.0

2.5

3.0

MAX31915 Industrial, Octal, Digital Input Translator

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Typical Operating Characteristics (continued)

(TA = +25°C, RREF = 15kω, unless otherwise noted.)

LDO OUTPUT VOLTAGE

vs. TEMPERATURE

MAX31915 toc13

AMBIENT TEMPERATURE (°C)

5VOUT VOLTAGE (V)

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

-40 1106010

I5VOUT = 5mA

CURRENT LIMIT

vs. FIELD INPUT VOLTAGE

MAX31915 toc14

FIELD INPUT VOLTAGE (V)

CURRENT LIMIT (mA)

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

VTSELECT = 0

RREF = 100kΩ

OUTPUT RISE/FALL TIME

vs. TEMPERATURE

MAX31915 toc15

TEMPERATURE (°C)

OUTPUT RISE/FALL TIME (ns)

1106010

-40

RISE TIME

FALL TIME

PROPAGATION DELAY vs. TEMPERATURE

(FIELD INPUT VOLTAGE = 18V)

MAX31915 toc16

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

60 11010

150

200

250

300

350

400

450

500

550

600

100

-40

VTSELECT = 1

RREF = 15kΩ

RISE TIME

FALL TIME

PROPAGATION DELAY vs. TEMPERATURE

(FIELD INPUT VOLTAGE = 4.5V)

MAX31915 toc17

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

1106010

400

450

500

550

600

350

-40

VTSELECT = 0

RREF = 100kΩ

RISE TIME

FALL TIME

LDO LINE REGULATION

MAX31915 toc10

SUPPLY VOLTAGE (V)

5VOUT VOLTAGE (V)

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

6363126211611

I5VOUT = 50mA

LDO OUTPUT

vs. VCC24V FIELD SUPPLY

MAX31915 toc11

SUPPLY VOLTAGE (V)

5VOUT OTPUT VOLTAGE (V)

4.6

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.4

5.5

4.5

4342414

I5VOUT = 50mA

LDO OUTPUT VOLTAGE

vs. TEMPERATURE

MAX31915 toc12

AMBIENT TEMPERATURE (°C)

5VOUT VOLTAGE (V)

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

-40 1106010

I5VOUT = 0mA

MAX31915 Industrial, Octal, Digital Input Translator

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PROPAGATION DELAY vs. TEMPERATURE

(FIELD INPUT VOLTAGE = 18V)

MAX31915 toc16

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

60 11010

150

200

250

300

350

400

450

500

550

600

100

-40

VTSELECT = 1

RREF = 15kΩ

RISE TIME

FALL TIME

M w m EEEEEEEEEEEEEEEEEEE jjjjjjjjjjjjjjjjjjj

336

DB0

N.C.

VTSELECT

OP2

N.C.

DB1 34

OP3

OP4

N.C.

OP1

OP8

GND

IN5

732

OP5

IN2

RT1

IN1

IN3

RT2

RT5

RT3

RT8

27 IN7

26 RT7

IN8

OP7

25 IN6

RT4

IN4

N.C. 18

RIREF

VCC24V 19

FAULT

22 UVFAULT

21 N.C.

RT6

20 5VOUT

OP6

MAX31915

MAX31915 Industrial, Octal, Digital Input Translator

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Pin Configuration

Detailed Description

Principles of Operation

Input Current Clamp

The input pins (IN1–IN8) sense the state (on versus off)

of field sensors by monitoring both the voltage and the

current flowing through the sensor output. The current

sinking through these input pins rises linearly with input

voltage until the limit set by the current clamp is reached.

Any voltage increase beyond this point does not increase

the input current any further.

The value of the current clamp is adjustable through

an external resistor connected between pin RIREF and

ground. The voltage at the input pins (IN1–IN8) are com-

pared against internally set references to determine if the

sensor is on (logic 1) or off (logic 0). The trip points deter-

mining the on/off status of the sensor can be selected

through pin VTSELECT as follows:

● VTSELECT = 1 selects trip points that satisfy the

requirements of IEC 61131-2 type 1, type 2, and type 3

switches.

● VTSELECT = logic 0 selects trip points that are CMOS

logic compatible and roughly centered approximately

2.5V.

Pins RT1–RT8 must be connected directly to GND to

provide a return path for the input current if LEDs are

not required for visual indication. If VTSELECT = logic

0, RT1–RT8 must be connected directly to GND. If

visual indication is needed when VTSELECT = logic 0,

then LEDs can be connected to pins OP1–OP8 through

external current-limiting resistors.

PIN NAME FUNCTION

1, 3, 6, 18, 21 N.C. No Connection

2 VTSELECT

Selects input trip points to be CMOS or IEC 61131-2 compliant.

Logic 0 = CMOS compliant

Logic 1 = IEC 61131-2 compliant

4 DB0 Debounce (Filtering) Time Select Inputs

5 DB1

DB1 DB0 TIME CONSTANT OF FILTER APPLIED

0 0 0 (no filtering)

0 1 0.025ms

1 0 0.75ms

1 1 3ms

7, 9, 11, 13, 15,

25, 27, 29 IN1–IN8 Field Input n. IN1 is pin 7 and IN8 is pin 29.

8, 10, 12, 14,

16, 24, 26, 28 RT1–RT8 Energyless LED Driver Outputs. Connect to GND if LEDs are not required. RT1 is pin 8 and

RT8 is pin 28.

17 RIREF Current-Limiter Reference Resistor

19 VCC24V Field-Supply Voltage

20 5VOUT 5V Regulator Output

22 UVFAULT Indicates Low Supply Voltage Alarm (Active Low)

23 FAULT Indicates Hot Temperature Alarm. This is OR’ed with the UVFAULT indicator (active low).

30–37 OP8–OP1 Logic Output n. OP1 is is 37. OP8 is pin 30.

38 GND Field Ground

— EP Exposed Pad. Must connect EP to the PCB ground plane.

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Pin Description

Nm Cunnemeu wa FINN! —>’\/\A/ 5VOUT DBO n51 MODESEL VCCzAv SIN MAX31915 |N1 .a UVFAULT RT1-B FAULT RIREF GNU RREF C1

Glitch Filter

A digital glitch filter provides debouncing and filtering of

the noisy sensor signals. The time constant of this filter

is selectable between 0 (i.e., no filtering), 25µs, 0.75ms,

and 3ms. The selection is achieved through pins DB0

and DB1. The filtered outputs of the comparators are pre-

sented to the logic output pins, OP1–OP8.

To provide the digital glitch filter, the device checks that an

input is stable for at least three clock cycles. The duration

of a clock cycle is 1/3 of the selected debounce time. If the

input is not stable for at least three clock cycles, the input

change is not sent to the internal shift register.

Temperature Monitoring

The internal junction temperature of the IC is constantly

monitored and an alarm is raised, by asserting the FAULT

pin, if the temperature rises above TALRM.

Supply Voltage Monitoring

A primary supply voltage-monitor circuit constantly moni-

tors the field-supply voltage. If this voltage falls below a

threshold (VOFFUVLO), an alarm is raised by asserting

the FAULT and UVFAULT pins, indicating to the microcon-

troller that the part is experiencing a fault condition and

the data is not to be trusted. Once the field-supply voltage

has recovered and goes above VONUVLO, the FAULT and

UVFAULT pins are released.

Powering the Device Through the 5VOUT Pin

The device can alternatively be powered using a 5V

supply connected to the 5VOUT pin. In this case, a

24V supply is no longer needed and the VCC24V

supply must be kept unconnected. (see Figure 1)

In this configuration, the device will always indicate

a UVFAULT and the FAULT pin will always be active

(pulled low). Faults due to the supply voltage monitoring

and temperature monitoring will not be available.

This configuration has lower power consumption and

heat dissipation since the on-chip 5V voltage regulator

is disabled.

JUMPERS TO 5V

AND GND

Figure 1: Basic Application Powered Through 5VOUT

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3% < 53="" e="" h="" l="" «se="" ’7="" fault="" —=""> UVFAULT —> 44 »

Typical Application Circuit

5VOUT

VCC24V

IN1–IN8

RT1–RT8

RIREF GND

DB0

DB1

24V

FIN1–FIN8

JUMPERS TO

5VOUT AND GND

RINX

RREF

C3 C4

OP1–OP8

C2C1D0C0

LED1–

LED8

FAULT

UVFAULT

VTSELECT

MAX31915

NOTE: NOT ALL THE EXTERNAL COMPONENTS INDICATED ON THE DIAGRAM ARE REQUIRED FOR THE OPERATION OF THE IC.

EARTH

GROUND

Note: For higher EFT performance, a minimum 1nF, 1000V capacitor can be added from nodes FIN1–FIN8 to earth or ground. For

alternative methods to improve EFT robustness, please check the Maxim website regularly for upcoming application notes currently

being developed.

Table 1. Recommended Components

COMPONENT DESCRIPTION REQUIRED/RECOMMENDED/OPTIONAL

C0, C5 4.7nF, 2kV polypropylene capacitor Recommended

C1 10µF, 60V ceramic capacitor Required

C2 100nF, 60V ceramic capacitor Required

C3 100nF, 10V ceramic capacitor Recommended

C4 4.7μF, 10V low-ESR ceramic capacitor Required

D0 36V fast zener diode (ZSMB36) Recommended

D1 General-purpose rectifier (IN4007) Optional: For reverse-polarity protection.

LED1–LED8 LEDs for visual input status indication Optional

R1 150Ω, 1/3W MELF resistor Required

RINX 2.2kΩ, 1/4W MELF resistor Required

RREF 15kΩ, 1/8W resistor Required

MAX31915 Industrial, Octal, Digital Input Translator

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+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

*EP = Exposed pad.

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

38 TSSOP-EP U38E+3 21-0714 90-0435

PART TEMP

RANGE PIN-PACKAGE CARRIER

MAX31915AUI+ -40°C to

+125°C 38 TSSOP-EP* Bulk

MAX31915AUI+T -40°C to

+125°C 38 TSSOP-EP* Tape and

reel

MAX31915 Industrial, Octal, Digital Input Translator

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Package Information

●For the latest package outline information and land

patterns (footprints), go to www.maximintegrated.com/

packages. Note that a “+”, “#”, or “-” in the package code

indicates RoHS status only. Package drawings may show

a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

Chip Information

PROCESS: BiCMOS

Ordering Information

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 12/14 Initial release —

1 4/15 Fixed IEC diagram and added 5VOUT description 11-12

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

are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

│

MAX31915 Industrial, Octal, Digital Input Translator

Revision History

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Datenblatt für MAX31915 von Analog Devices Inc./Maxim Integrated

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