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CD54ACT191 - Presettable Synchronous 4-Bit Binary Up/Down Counter

Download the CD54ACT191 datasheet PDF. This datasheet also covers the CD54AC191 variant, as both devices belong to the same presettable synchronous 4-bit binary up/down counter family and are provided as variant models within a single manufacturer datasheet.

General Description

The CD54AC191 and CD54ACT191 are asynchronously presettable binary up/down synchronous counters that utilize Advanced CMOS Logic technology.

Presetting the counter to the number on preset data inputs (P0-P3) is accomplished by setting LOW the asynchronous parallel load input (PL).

Key Features

  • Buffered Inputs.
  • Typical Propagation Delay - 12.8ns at VCC = 5V, TA = 25oC, CL = 50pF.
  • Exceeds 2kV ESD Protection MIL-STD-883, Method 3015.
  • SCR-Latchup-Resistant CMOS Process and Circuit Design.
  • Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption.
  • Balanced Propagation Delays.
  • AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply.
  • ±24mA Output Drive Current - Fanout to 1.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (CD54AC191-etcTI.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription for CD54ACT191 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for CD54ACT191. For precise diagrams, and layout, please refer to the original PDF.

CD54AC191, CD54ACT191 Data sheet acquired from Harris Semiconductor SCHS243A October 1998 - Revised May 2000 Presettable Synchronous 4-Bit Binary Up/Down Counter Features...

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May 2000 Presettable Synchronous 4-Bit Binary Up/Down Counter Features • Buffered Inputs • Typical Propagation Delay - 12.8ns at VCC = 5V, TA = 25oC, CL = 50pF • Exceeds 2kV ESD Protection MIL-STD-883, Method 3015 • SCR-Latchup-Resistant CMOS Process and Circuit Design • Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption • Balanced Propagation Delays • AC Types Feature 1.5V to 5.

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