MC14526B

可预置4位计数器 Presettable 4-Bit Down Counters

The 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. This complementary MOS counter can be used in frequency synthesizers, phase-locked loops, and other frequency division applications requiring low power dissipation and/or high noise immunity.

Features

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Supply Voltage Range = 3.0 Vdc to 18 Vdc

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Logic Edge-Clocked Design - Incremented on Positive Transition of Clock or Negative Transition of Inhibit

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Asynchronous Preset Enable

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Capable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load Over the Rated Temperature Range

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Pb-Free Packages are Available