7490compatible
7490compatible refers to hardware, modules, or designs that are intended to work with the 7490 family of four‑bit counters used in digital logic circuits. The term is commonly found in product documentation and design notes to indicate that a part can be used in place of a CD7490 or other 7490‑style counters, or that it will interoperate in circuits built around such counters. The goal of compatibility is to preserve the basic functional behavior and the essential electrical interfaces.
Key compatibility aspects typically claimed include a matching or compatible pinout for the clock, reset, and
When selecting a 7490‑compatible part, engineers consult datasheets to confirm pin assignments, reset/preset behavior, propagation delays,
Limitations: “7490-compatible” is not an official standard; it signifies compatibility in a given context but does
See also: 74x90 family, CD7490, TTL counters, CMOS counters.