The SN54HC191TDE2 is an integrated circuit (IC) component that belongs to the 54HC series of high-speed CMOS logic devices. It is a 4-bit synchronous binary up/down counter with a parallel load feature. This versatile IC chip can function as an up counter, a down counter, or can be loaded with a preset value.
Here are some of the key features and specifications of the SN54HC191TDE2:
1. Synchronous Operation: The IC operates synchronously with an external clock signal. The counter advances or decreases its value on each clock pulse, based on the up/down control input.
2. Binary Output: It provides a 4-bit binary output representing the current count value. The binary output of the counter can be examined using four separate output pins.
3. Count Direction Control: The IC features a control input pin (UP/DOWN) to determine the count direction. When the UP/DOWN pin is low, the counter counts up, and when the pin is high, the counter counts down.
4. Asynchronous Parallel Loading: The IC includes an asynchronous parallel load capability. When the parallel load input (P load) is activated, the current count value can be loaded into the counter from external inputs.
5. Cascadable Design: The IC supports cascading, allowing additional counters to be connected for extended counting sequences
