You're currently on: Catalog » DIY Kits, Electronics and ICs » 74191 – synchronous 4-bit up/down binary counter, standard TTL, DIP-16 (generic)
The 74191 is a standard TTL synchronous 4-bit binary counter that can count up or down. A single D/U input selects the direction, and the counter can be preset asynchronously through four data inputs and a load input. Max/min and ripple clock outputs make it easy to cascade several counters. It comes in a 16-pin plastic DIP and runs from 5 V.
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 (National DM74191N); only the background was cleaned to white, preserving the marking and leads.
Minimum order: 1 pc.
SN74190/191 datasheet (Texas Instruments, reference)
Listed prices include 25% VAT when browsing as guest. Orders to U.S.A. charged 30% import tariffs at checkout instead. VAT and tariffs removed at checkout if excempt(outside EU and U.S.A)
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