CD54HC162 Overview
Description
These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The CD54HC160 and CD54HC162 are BCD decade counters.
Key Features
- an internal carry look-ahead for application in high-speed counting designs
- The CD54HC160 and CD54HC162 are BCD decade counters
- This mode of operation eliminates the output counting spikes that are normally associated with synchronous (ripple-clock) counters
- A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform
- The clear function for the CD54HC160 is asynchronous
- The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating
- Instrumental in accomplishing this function are ENP, ENT, and a ripple-carry output (RCO)
- Both ENP and ENT must be high to count, and ENT is fed forward to enable RCO
