Adlink cPCI-7300 Uživatelský manuál stáhnout pdf (Strana 11)

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

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Input Voltage:

• Low: Min. 0V; Max. 0.8V

• High: Min. +2.0V

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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.

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Output Voltage:

• Low: Min. 0V; Max. 0.5V

• High: Min. +2.7V

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Driving Capacity:

• Low: Max. +0.5V at 48mA (Sink)

• High: Min. 2.4V at -8 mA (Source)

♦

Hysteresis: 500mV

♦

Transfer Characteristic

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 81 82

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