155-0137-00

The Tektronix H493  (P/N 155-0137-00) is a pre-amp/comparator hybrid integrated circuit in a ceramic package. It was designed by Oscar Olson.

155-0137-00 in P6451 probe
Channel equivalent circuit (click to enlarge)

It contains five comparators made of dual JFET dies feeding comparators with differential ECL outputs using commercial MC10216 dies (156-0775-00) that can drive terminated 100 Ω twisted-pair lines. The instrument input would contain differential ECL receivers like the MC10115 or MC10216.

See also

Used in

Some instruments using part 155-0137-00

Instrument Manufacturer Class Model Description Introduced
P6451 Tektronix Probe P6451 8+1-channel logic analyzer probe 1977
P6452 Tektronix Probe P6452 100 MHz, 8-channel probe 1982
P6458 Tektronix Probe P6458 4-channel control input probe (?)

Datasheet