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M74HC190 - 4-BIT SYNCHRONOUS UP/DOWN COUNTERS

Download the M74HC190 datasheet PDF. This datasheet also covers the M74HC191 variant, as both devices belong to the same 4-bit synchronous up/down counters family and are provided as variant models within a single manufacturer datasheet.

General Description

The M54/74HC190/191 are high speed CMOS 4-BIT SYNCHRONOUS UP/DOWN COUNTERS fabricated in silicon gate C2MOS technology.

They have the same high speed performance of LSTTL combined with true CMOS low power consumption.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (M74HC191-STMicroelectronics.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by STMicroelectronics

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M74HC191 4-BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC192 SYNCHRONOUS UP/DOWN DECADE COUNTER
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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.

View original datasheet text
M54/M74HC190 M54/M74HC191 4 BIT SYNCHRONOUS UP/DOWN COUNTERS . HIGH SPEED fMAX = 48 MHz (TYP.) AT VCC = 5 V . LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C . HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) . OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS . SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH = tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS190/191 B1R (Plastic Package) F1R (Ceramic Package) M 1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R PIN CONNECTIONS (top view) DESCRIPTION The M54/74HC190/191 are high speed CMOS 4-BIT SYNCHRONOUS UP/DOWN COUNTERS fabricated in silicon gate C2MOS technology.