Universal I/O TTL Input UNIV-TTLIN/IL

The UNIV-TTLIN/IL Universal I/O module provides two TTL level inputs to the Event Generator. The input terminated can be set by a jumper to either 50 ohm to ground or 240 ohm to +5V. The inputs are 5V tolerant even when powered down.

Input specifications are following:

parameter value
connector type LEMO EPK.00.250.NTN
input impedance  50 ohm, 240 ohm or high impedance
VIH > 2.3 V
VIL < 1.0 V