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Example circuits, Electrical characteristics – Impulse 8203 User Manual User Manual

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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)