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74AC11191 - SYNCHRONOUS 4-BIT UP/DOWN BINARY COUNTER

General Description

The 74AC11191 is a synchronous, 4-bit binary reversible up/down counter.

Synchronous counting operation is provided by clocking all flip-flops simultaneously so that the outputs change coincident with each other when instructed by the steering logic.

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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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74AC11191 SYNCHRONOUS 4-BIT UP/DOWN BINARY COUNTER • Single Down/Up Count Control Line • Look-Ahead Circuitry Enhances Speed of Cascaded Counters • Fully Synchronous in Count Modes • Asynchronously Presettable with Load Control • Flow-Through Architecture to Optimize PCB Layout • Center-Pin VCC and GND Configurations to Minimize High-Speed Switching Noise t• EPIC (Enhanced-Performance Implanted CMOS) 1-mm Process • 500-mA Typical Latch-Up Immunity at 125°C • Package Options Include Plastic Small-Outline Packages and Standard Plastic 300-mil DIPs SCAS105A – FEBRUARY 1990 – REVISED APRIL 1993 DW OR N PACKAGE (TOP VIEW) RCO QA QB GND GND GND GND QC QD MAX/MIN 1 2 3 4 5 6 7 8 9 10 20 D/U 19 CLK 18 A 17 B 16 VCC 15 VCC 14 C 13 D 12 CTEN 11 LOAD description The 74AC11191 is a synchronous,