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M82 - Mezzanine Card with 16 Digital 20 kHz Inputs


The M82 is an M-Module with 16 fully isolated digital input channels with latching and comparator capabilities. A current limit for each input guarantees an input voltage range of 0 to 40V. It is designed for industrial automation, medical computers, in-vehicle computers, and embedded computers in transportation.

  • M82 Product ImageM82 16 Digital Inputs
  • M82 Product Image

Main Features

  • 16 fast 20 kHz inputs
  • 0 V to 40 V input voltage
  • Constant current inputs
  • Hysteresis function
  • Interrupt generation
  • 500 V DC isolation from the system
  • 100 V DC isolation between the channels
  • -40 °C to +85 °C
M82 Product Image

Technical Data

Digital Input Characteristics
  • FET constant current source inputs: 5.6 mA typ.
  • Input voltages and currents:
    • Input voltage: 0 V to 40 V
    • Switching voltage 0: 5.5 V ±0.5 V @ 3 mA min./ 3.3 mA typ./ 4 mA max.
    • Switching voltage 1: 9.5 V ±0.5 V @ 4 mA min./ 5.6 mA typ./ 10 mA max.
    • Switching voltage 2: 15.2 V ±0.5 V @ 4 mA min./ 5.6 mA typ./ 10 mA max.
  • Switching Times
    • Rise time: 4.2 µs typ.
    • Fall time: 32 µs typ.
  • Hysteresis function
  • Interrupt generation with maskable interrupt
  • Digital I/O
    • 16x digital input, isolated, HD-Sub, 44-pin, receptacle
  • M-Module
    • 1x A08/D16/INTA/INTB/IDENT, board to board
Product Standard
M-Module: ANSI/VITA 12-1997 (S2012)
Electrical Specifications
  • Supply voltage
    • +5 V (-3%/+5%)
  • Power consumption
    • 1.1 W typ.
  • Isolation voltage:
    • 500 V DC between isolated side and digital side
    • All channels are optically isolated (100 V between the channels)
Mechanical Specifications
  • Dimensions standard: M-Module: (W) 149 mm, (D) 53 mm
  • Weight: 72 g
Environmental Specifications
  • Operating temperature
    • 0°C to +60°C or -40°C to +85°C
    • Airflow: min. 10 m³/h
  • Storage temperature: -40°C to +85°C
  • Relative humidity range (operation): max. 95% non-condensing
  • Relative humidity range (storage): max. 95% non-condensing
  • Altitude: -300 m to + 3000 m
  • Shock: 15g/11ms
  • Bump: 10g/16ms
  • Vibration (sinusoidal): 2g/10 Hz to 150 Hz
PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
  • EN 55022 (radio disturbance)
  • IEC 61000-4-2 (ESD)
  • IEC 61000-4-4 (burst)
MTBF: 370 000h @ 40°C (derived from MIL-HDBK-217F)
Software Support
  • MEN Driver Interface System (MDIS for Windows, Linux, VxWorks, QNX)
  • For more information on supported operating system versions and drivers see Software.

Ordering Information

Standard M82 Models

16 digital inputs, fully isolated, -40°C to +85°C with qualified components

Miscellaneous Accessories

M-Module cable, 2.5m, with 44-pin HD-Sub plug/housing to pig tail


25 mounting screw sets to fix M-Modules on carrier boards (3 different screw types, 50 pieces each)



MDIS5 low-level driver sources (MEN) for M31, M32 and M82


MDIS5 System (and Device Driver) Package (MEN) for Linux. 
This software package includes most standard device drivers available from MEN.


MDIS5 Windows driver (MEN) for M31, M32 and M82


MDIS5 low-level driver sources (MEN) for M31, M32 and M82


MDIS5 System (and Device Driver) Package (MEN) for VxWorks. This software package includes most standard device drivers available from MEN.


MDIS5 low-level driver sources (MEN) for M31, M32 and M82


MDIS4 system (and device driver) package (MEN) for QNX, source code. This software package includes most standard device drivers available from MEN.

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