155-0137-00
![](http://w140.com/tekwiki/images/thumb/c/c4/P6451-int-1.jpg/350px-P6451-int-1.jpg)
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.
![](http://w140.com/tekwiki/images/thumb/5/5e/P6451-equiv.jpg/350px-P6451-equiv.jpg)
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 | (?) |