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74F191 - Up/down binary counter

General Description

The 74F191 is a 4-bit binary counter.

It contains four edge-triggered master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operations.

Key Features

  • High speed.
  • 125MHz typical fMAX.
  • Synchronous, reversible counting.
  • 4-Bit binary.
  • Asynchronous parallel load capability.
  • Cascadable without external logic.
  • Single up/down control input.

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Other Datasheets by Philips Semiconductors (now NXP Semiconductors)

Part Number Description
74F193 Up/down binary counter
74F194 4-bit bidirectional universal shift register
74F195A 4-bit parallel-access shift register
74F198 8-bit bidirectional universal shift register
74F199 8-bit parallel-access shift register

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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INTEGRATED CIRCUITS 74F191 Up/down binary counter with reset and ripple clock Product specification IC15 Data Handbook 1995 Jul 17 Philips Semiconductors Philips Semiconductors Product specification Up/Down binary counter with reset and ripple clock 74F191 FEATURES • High speed –125MHz typical fMAX • Synchronous, reversible counting • 4-Bit binary • Asynchronous parallel load capability • Cascadable without external logic • Single up/down control input DESCRIPTION The 74F191 is a 4-bit binary counter. It contains four edge-triggered master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operations. Asynchronous parallel load capability permits the counter to be preset to any desired number.