7492 – divide-by-12 counter, TTL, DIP-14 (generic)

The 7492 is a classic standard TTL IC containing an asynchronous counter built from a divide-by-2 and a divide-by-6 section, each with its own clock input. The sections are combined into a divide-by-12 counter, for example to divide a 60 Hz signal in clocks. Two gated reset inputs clear the counter. Note the pinout with the supply on pin 5 and ground on pin 10. The decade version is the 7490, the binary version the 7493, and the LS version the 74LS92. It runs from a 5 V supply. It comes in a 14-pin plastic DIP.

Condition: mixed surplus lot, untested. The bag may contain used (pulled) ICs of the same type from different manufacturers, so marking and date code vary. The photo shows one chip from this lot (TI SN7492AN 7605); only the background was cleaned to white, preserving the marking and leads.

Minimum order: 1 pc.

SN7492A/SN74LS92 datasheet (Texas Instruments, reference)