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M74HC191 - 4-BIT SYNCHRONOUS UP/DOWN COUNTERS

General Description

s The M74HC191 is an high speed CMOS 4-BIT b SYNCHRONOUS UP/DOWN COUNTER O fabricated with silicon gate C2MOS technology.

Pulse Input.

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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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M74HC191 4 BIT SYNCHRONOUS UP/DOWN COUNTERS s HIGH SPEED : fMAX = 61 MHz (TYP.) at VCC = 6V s LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY: ) VNIH = VNIL = 28 % VCC (MIN.) t(s s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) uc s BALANCED PROPAGATION DELAYS: d tPLH ≅ tPHL ro s WIDE OPERATING VOLTAGE RANGE: P VCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH te 74 SERIES 191 ole DESCRIPTION s The M74HC191 is an high speed CMOS 4-BIT b SYNCHRONOUS UP/DOWN COUNTER O fabricated with silicon gate C2MOS technology. - State changes of the counter are synchronous t(s) with the LOW-to-HIGH transition of the Clock Pulse Input.