● Logic High: 2.0 to 5.0 VDC.

● Logic Low: -0.5 to +0.8 VDC.

● Input Load (Hi): 20 uA.

● Input Load (Lo): -200 uA.

● Logic High: 2.5 VDC min., source 32 mA.

● Logic Low: 0.5 VDC max., sink 64 mA.

● Power Output: +5 VDC from computer bus (ext. 0.5A fast-blow fuse is recommended).

● Power Required: +5 VDC at 50 mA typical (all outputs HIGH, depends on features installed)

● Type: 82C54 programmable interval counters

● Output Drive: 8mA.

● Input Gate: TTL/CMOS compatible

● Clock Output: 1MHz crystal-controlled oscillator

● Active Count Edge: Negative edge.

● Timer Range: 16 bits event counter, 32 bits rate generator

● Operating Temperature: 0 °C to +70 °C (optional -40 °C to +85 °C).

● Storage Temperature: -50 °C to +120 °C.

● Humidity: up to 95% RH, non-condensing.

● This product is designed to be in full compliance with CE requirements.