Presettable 4−Bit Down Counters

The MC14526B binary counter is constructed with MOS P−channel and N−channel enhancement mode devices in a monolithic structure.

This device is presettable, cascadable, synchronous down counter with a decoded “0” state output for divide−by−N applications. In single stage applications the “0” output is applied to the Preset Enable input. The Cascade Feedback input allows cascade divide−by−N operation with no additional gates required. The Inhibit input allows disabling of the pulse counting function. Inhibit may also be used as a negative edge clock.

Features

• Supply Voltage Range = 3.0 Vdc to 18 Vdc

• Logic Edge−Clocked Design: Incremented on Positive Transition of

Clock or Negative Transition of Inhibit

• Asynchronous Preset Enable

• Capable of Driving Two Low−Power TTL Loads or One Low−Power

Schottky TTL Load Over the Rated Temperature Range

• Pb−Free Packages are Available*