20 MHz synchronous binary counter with asynchronous reset
The CD74HCT161E is a 4-bit binary counter from the 74HCT series, clocked at a 20 MHz count rate with synchronous timing — all four bits update on the same negative clock edge, eliminating ripple skew across the outputs. The asynchronous reset clears the counter to zero independent of the clock state, useful for power-on initialization or immediate reset without waiting for a clock edge.
Military temperature range and through-hole package
Housed in a 16-pin DIP with 0.300-inch (7.62 mm) body width, the through-hole package mates with standard DIP sockets or can be hand-soldered into a PCB — no reflow profile needed.
Active lifecycle and compliance
ROHS3 compliant — no restricted substance exemptions expiring, which simplifies compliance for EU-market equipment and avoids the need for an exemption review during the product lifecycle.