User`s guide

Introduction • 3
1.3 Specifications
♦ Digital I/O (DIO)
• Numbers of Channel: 32 TTL compatible inputs and/or outputs
• Device: IDT 74FCT373
• I/O Configurations:
16 DI & 16 DO
32 DI
32 DO
♦ Input Voltage:
• Low: Min. 0V; Max. 0.8V
• High: Min. +2.0V
♦ Input Load:
• Terminator OFF:
Low: +0.5V @ ±20 mA
High: +2.7V @ ±1 mA max.
• Terminator ON:
Termination resistor: 110 Ohms
Termination voltage: 2.9V
Low: +0.5V @ ±22.4mA
High: +2.7V @ ± 1mA max.
♦ Output Voltage:
• Low: Min. 0V; Max. 0.5V
• High: Min. +2.7V
♦ Driving Capacity:
• Low: Max. +0.5V at 48mA (Sink)
• High: Min. 2.4V at -8 mA (Source)
♦ Hysteresis: 500mV
♦ Transfer Characteristic