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SeaLINK PIO-48 User Manual

Electrical Characteristics

The SeaLINK PIO-48 uses 74ABT245 octal bi-directional transceivers to provide

TTL input/output capabilities. Each bit is pulled to +5V through a 10K ohm pull-up

resistor to insure each bit is at a known state when not driven.

Specifications

Inputs

 Logic High: Min 2VDC

 Logic Low: Max 0.8VDC

Outputs

 Logic High: Min 2VDC @ 32 mA

 Logic Low: Max 0.5VDC @ 64 mA

Temperature Range

 Operating: 0°C – 70°C

 Storage: -50°C – 105°C

Power Requirements

 5VDC @ 400mA (no load); +5VDC @ 2.4A (Max)

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Impulse 8203 User Manual Manual do Utilizador Página 10