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SN74ALS191A - Synchronous 4-Bit Up/Down Binary Counter

Description

SN54ALS191A .

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Full PDF Text Transcription

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SN54ALS191A, SN74ALS191A SYNCHRONOUS 4ĆBIT UP/DOWN BINARY COUNTERS SDAS210C − DECEMBER 1982 − REVISED JULY 1996 D Single Down / Up Count-Control Line D Look-Ahead Circuitry Enhances Speed of Cascaded Counters D Fully Synchronous in Count Modes D Asynchronously Presettable With Load Control D Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description SN54ALS191A . . . J PACKAGE SN74ALS191A . . . D OR N PACKAGE (TOP VIEW) B1 QB 2 QA 3 CTEN 4 D/U 5 QC 6 QD 7 GND 8 16 VCC 15 A 14 CLK 13 RCO 12 MAX/MIN 11 LOAD 10 C 9D The ’ALS191A are synchronous 4-bit reversible up/down binary counters.
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