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M28 - Mezzanine Card with 16 Binary Sink Outputs


The M28 is an M-Module with 16 digital low-side switch outputs that connect or disconnect a load to ground. It is designed for industrial automation, medical computers, in-vehicle computers, and embedded computers in transportation.

Download data sheet

  • M28 Product ImageM28 16 Binary Outputs
  • M28 Product Image

Main Features

  • 16 outputs 8..36 V
  • 500 mA output current per channel
  • Thermal and short-circuit protection
  • Load on ground
  • Optical isolation
M28 Product Image

Technical Data

Output Voltage
  • 8..36V; 500mA (closed)
  • 2V max.; 10µA max. (open)
Output Current
  • Max. 500mA per channel
  • No derating
  • Load on ground
  • Thermal and short circuit protection
Peripheral Connections
  • Via front panel on a shielded 25-pin D-Sub receptacle connector
  • Via carrier board (rear I/O)
M-Module Characteristics
A08, D16, IDENT
Electrical Specifications
  • Isolation voltage:
    • 500V DC between isolated side and digital side
    • Voltage between the connector shield and isolated ground is limited to 180V using a varistor; AC coupling between connector shield and isolated ground through 47nF capacitor
  • Supply voltage/power consumption: +5V (4.85V..5.25V), 100mA typ.
  • MTBF: 58,000h @ 50°C (derived from MIL-HDBK-217F)
Mechanical Specifications
  • Dimensions: conforming to M-Module Standard
  • Weight: 82g
Environmental Specifications
  • Temperature range (operation):
    • 0..+60°C
    • Industrial temperature range on request
    • Airflow: min. 10m³/h
  • Temperature range (storage): -40..+85°C
  • Relative humidity range (operation): max. 95% non-condensing
  • Relative humidity range (storage): max. 95% non-condensing
  • Altitude: -300m to + 3,000m
  • Shock: 15g/11ms
  • Bump: 10g/16ms
  • Vibration (sinusoidal): 2g/10..150Hz
PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
Tested according to EN 55022 (radio disturbance), IEC 61000-4-2 (ESD) and IEC 61000-4-4 (burst)
Software Support
  • MEN Driver Interface System (MDIS for Windows, Linux, VxWorks, QNX, OS-9)
  • For more information on supported operating system versions and drivers see Software.

Ordering Information

Standard M28 Models

16 binary source outputs, 0..+60°C

Miscellaneous Accessories

M-Module cable, 2 m, with 25-pin D-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 System (and Device Driver) Package (MEN) for Linux. This software package includes most standard device drivers available from MEN.


MDIS4/2004 / MDIS5 Windows driver (MEN) for M27, M28 and M81


MDIS5 low-level driver sources (MEN) for M27, M28 and M81


MDIS5 low-level driver sources (MEN) for M27, M28 and M81


MDIS5 low-level driver sources (MEN) for M27, M28 and M81

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