Parts, tools and supplies for the electronics experimenter.
These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The 74HC161 devices are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable (ENP, ENT) inputs and internal gating. 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.
Manufacturer: Texas Instruments
Technology: High Speed CMOS
Package: PDIP 16
Voltage Range: 2-6 volts