V280 48-channel VME isolated digital input module

Isolated Digital Input Module - V280
  • 48 channels of isolated digital input
  • Available in 24V and 5V nominal input versions
  • Overvoltage and reverse-voltage protection
  • Independently programmable rise and fall time responses for contact debounce or AC inputs
  • Glitch-catch capability
  • Transparent built-in self-test (BIST)
  • Input state readout at full VMEbus speed without handshaking
  • Clearly labeled dipswitches set VME address; no jumpers, headers, or trimpots
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The V280 is a single-wide, 6U VME module that includes 48 isolated logic inputs. It is available in versions for nominal 5 volt or 24 volt input levels. The V280 has independently programmable rising and falling edge response times to support contact debounce, glitch catching, and DC or AC inputs.

The V280 is protected against reverse polarity input and overvoltages, and includes fast, transparent built-in self-test (BIST).

FUNCTION 48-channel isolated digital input VME module
DEVICE TYPE 16-bit VME register-based slave: A24:A16:D16
Implements 256 16-bit registers at switch selectable addresses in the VME 16 or 24 bit addressing spaces
INPUTS V280-1
Nom input +5 volts
Threshold 2.5 volts typical
± 10 volts operation
± 20 volts max
V280-2
Nom input +24 volts
Threshold 11 volts typical
± 35 volts operation
± 50 volts max
ISOLATION ± 200 volts continuous
DIGITAL DEBOUNCE Risetime and falltime programmable in three 16-channel groups, 20 µs to 655 ms with 10 µs resolution
OPERATING TEMPERATURE 0 to 70°C operating
-20 to 80°C storage
POWER VME supplies:
+ 5 volts, 0.4 amp max
+ 12 volts, 0.02 amp max
- 12 volts, 0.02 amp max
CONNECTORS P1 VME connector
P2 connector for mechanical stability, no D32 VME access
J1, J2 50-pin SCSI females, each 24 channels
INDICATORS LEDs indicate VME access, CPU activity, error conditions;
additional LED is user programmable
PACKAGING 6U single-wide VME module
CONFORMANCE ANSI/VITA 1-1994 (R2002) VMEbus spec

PDF Block Diagram: V280 isolated digital input module

PDF Datasheet: V280 isolated digital input module

PDF Manual: V280 isolated digital input module

V280-1: 48-channel VME isolated digital input module with 5V threshold and BIST

V280-2: 48-channel VME isolated digital input module with 24V threshold and BIST

V280-12: 48-channel VME isolated digital input module with 24V threshold, BIST, and conformal coating

J51: 3' shielded-pair 50 pin male SCSI cable

J52: 6' shielded-pair 50 pin male SCSI cable

J280: 50-pin SCSI breakout board