ACL-7122 - 144bit Digital I/O Card
by ADLINK

The ACL-7122 is a 144-CH high-density parallel digital I/O board for ISA bus. This board provides 6 sets of 24-CH I/O interface. Every 24-CH interface emulates mode 0 of the industry standard 8255 Programmable Peripheral Interface (PPI) chips, each offers three 8-bit ports: PA, PB, and PC. PC is subdivided into 2 nibble-wide (4-bit) ports. Each PPI channel has an individual connector with OPTO-22 pin assignment.

 

Digital I/O

• Number of channels: 144 inputs/outputs
• Compatibility: 5 V/TTL
• Digital logic levels
  • Input high voltage: 2-5.25 V
  • Input low voltage: 0-0.8 V
  • Output high voltage: 2.4 V minimum
  • Output low voltage: 0.5 V maximum
• Output driving capacity
  • Source current
    • 2.6 mA (Port A and Port B)
    • 15 mA (Port C)
  • Sink current: 24 mA
• Data transfer: programmed I/O, interrupt

General Specifications

• I/O connector: 50-pin ribbon male x 6

• Operating temperature: 0 to 55 °C
  Storage temperature: -20 to 80 °C
   
• Relative humidity: 5 to 95%, noncondensing

• Power requirements: +5V @ 1.40A typical, 1.80A maximum

• Dimensions (not including connectors): 183 mm x 119 mm

ACL-7122.pdf

64 K