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Product short description:
  • 24 differential I/O, 16 TTL I/O
  • Four 16-bit counter/timer channels,  six operating modes
  • Change of state and level interrupts

The PMC424 digital I/O module provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multi-function counter/timers.

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The 16 TTL input/output channels can be programmed as an input or an output on a channel basis. The 24 differential input/output channels are programmed as inputs or outputs on an 4-channel port basis. All input channels can be enabled for change of state, low, or high level transition interrupts.

Four 16-bit multifunction counters/timers can be configured for pulse width modulated output, watchdog timer, event counter, frequency measurement, pulse width measurement, period measurement, or one shot pulse output. The four 16-bit counters can also be configured into two 32-bit counter/timers. A conduction-cooled version is also available.

  • 0 to 70°C (PMC424 / R) or -40 to 85°C (PMC424E / CC)

Digital I/O

  • 40 digital input/output channels:
    • 24 differential input/outputs
    • 16 TTL input/output channels (15 ch. for 434R)
  • Programmable change of state/level interrupts
  • Input signal filtering debounce logic

Counter/Timer

  • Four 16-bit or two 32-bit counter/timer channels (control lines shared with 16 TTL I/O channels)
  • Six operating modes:
    • Pulse width modulation
    • Watchdog timer
    • Event counter
    • Frequency measurement
    • Pulse width or period measurement
    • One-shot and repetitive one-shot
    • TTL-compatible thresholds
    • Power-up and system reset are failsafe

Additional information

Weight 16 oz
Dimensions 13 × 12 × 3 in
Part Number

PMC424: Front I/O connector, PMC424CC: Rear I/O connector, extended temp. range, conduction-cooled., PMC424E: Front I/O connector, extended temp. range., PMC424R: Rear I/O connector

  • Description

    The 16 TTL input/output channels can be programmed as an input or an output on a channel basis. The 24 differential input/output channels are programmed as inputs or outputs on an 4-channel port basis. All input channels can be enabled for change of state, low, or high level transition interrupts.

    Four 16-bit multifunction counters/timers can be configured for pulse width modulated output, watchdog timer, event counter, frequency measurement, pulse width measurement, period measurement, or one shot pulse output. The four 16-bit counters can also be configured into two 32-bit counter/timers. A conduction-cooled version is also available.

  • Features & Benefits

    • 0 to 70°C (PMC424 / R) or -40 to 85°C (PMC424E / CC)

    Digital I/O

    • 40 digital input/output channels:
      • 24 differential input/outputs
      • 16 TTL input/output channels (15 ch. for 434R)
    • Programmable change of state/level interrupts
    • Input signal filtering debounce logic

    Counter/Timer

    • Four 16-bit or two 32-bit counter/timer channels (control lines shared with 16 TTL I/O channels)
    • Six operating modes:
      • Pulse width modulation
      • Watchdog timer
      • Event counter
      • Frequency measurement
      • Pulse width or period measurement
      • One-shot and repetitive one-shot
      • TTL-compatible thresholds
      • Power-up and system reset are failsafe
  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 13 × 12 × 3 in
    Part Number

    PMC424: Front I/O connector, PMC424CC: Rear I/O connector, extended temp. range, conduction-cooled., PMC424E: Front I/O connector, extended temp. range., PMC424R: Rear I/O connector