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Diamond Point International

MEN Mikro A302 - 6U VMEbus Card with 128 Binary I/Os

4 M-Module Slots, -40 to +85°C Qualified


The A302 is an input/output VMEbus target board for 128 binary process signals. The I/Os are divided into four optically isolated units. The card is used for input/output of digital signals with different voltage levels and ground references.

For each unit 32 channels are driven to a 44-pin D-Sub connector. Each channel can be either input or output.

The binary inputs/outputs can be universally used in industrial systems. They are optically isolated from the system, which is essential for advanced automotive and industrial applications.


Digital I/O/Counter/Timers

I/Os128 binary signals
• 4 optically isolated units
• 32 channels for each unit
Individual use of each channel as input or output
Individual edge-triggered interrupts
Input/output load on ground
High-side output switches
High output current
• Max. 1.9A per channel
• Max. 16A per unit
Over-current and over-temperature protection
InputsInput voltage min.: 0V
Input voltage max. external supply voltage (12..32V)
Voltage level log. 0: 0V..6V or open
Voltage level log. 1: 12V..32V
Input current log. 1: 2.03mA @ 24V
Switching threshold: 9.2V @ 0.78mA typ.
Switching time for input change: min. 33µs, max. 44µs
Excess voltage protection: max. +47V
OutputsOutput voltage range: 12V..32V
Output current log. 0: max. 10mA
Output current log. 1: max. 1.9A
Switching time for output change: < 200µs
Isolation voltage (optocoupler): 500V DC
IsolationIsolation voltage
• 500V DC between isolated side and digital side
• 180V DC between the channels
• 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
Connectors(s)Via front panel on four shielded 44-pin HD-Sub receptacle connectors


• Only one slot required on the VMEbus
• A24/A16/D16/D08(EO) slave
• D08(O) interrupter
ElectricalSupply voltage/power consumption:
• +5V (4.85V..5.25V), 106mA
• +3.3V (3.0V..3.6V), 27mA
• +24V (external supply voltage 12..32V), 78mA (total for all units)
MechanicalDimensions: standard double Eurocard, 233.3mm x 160mm
Conformal CoatingConformal coating on request
SoftwareM-Module drivers for Windows®, VxWorks®, Linux, QNX®, OS-9® as supported
TemperatureTemperature range (operation):
• 0..+60°C or -40..+85°C
• Airflow: min. 10m³/h
Temperature range (storage): -40..+85°C
HumidityRelative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
WeightWeight: 280g
Altitude-300 m to +3000 m
Vibration(sinusoidal): 2g/10..150Hz
ShockShock: 15g/11ms
Bump: 10g/16ms
MTBF274,000h @ 40°C (derived from MIL-HDBK-217F)
Safety/CertificationPCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
EMCTested according to EN 55022 (radio disturbance), IEC1000-4-2 (ESD) and IEC1000-4-4 (burst)
Warranty2 Years

Ordering Details

128-bit binary I/O controller, 0..+60°C