![74HC191 (4-Bit Counter)](http://store.fut-electronics.com/cdn/shop/products/74HC-IC-16PIN_3ec6136b-c02f-4e92-9cd6-b3dba0df7408_1024x1024.jpg?v=1597152416)
The 74HC191 are asynchronously presettable 4-bit binary up/down counters. They contain four master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operation.
Specifications
- Synchronous reversible counting
- Asynchronous parallel load
- Count enable control for synchronous expansion
- Single up/down control input
- Output capability: standard