SN74ALS191ANG4

Counter Dividers Overview

The SN74ALS191ANG4 is a synchronous 4-bit reversible up/down binary counter from the Texas Instruments ALS logic family. It operates on a single supply voltage of 4.5 V to 5.5 V and supports clock frequencies up to 30 MHz. The device features fully synchronous counting, asynchronous preset capability via the LOAD control, and look-ahead circuitry for cascaded applications. It is housed in a standard 16-pin plastic DIP package.

Counter Dividers Feature Summary

• Synchronous operation with simultaneous flip-flop clocking eliminates output counting spikes.
• Asynchronously programmable preset allows independent data loading without clock dependency.
• Look-ahead circuitry enhances speed when connecting multiple counters in series.

Counter Dividers Applications

• Modulo-N frequency division circuits
• High-speed digital timing sequences
• Cascaded multi-stage binary counters

Counter Dividers Procurement Notes

Verify component authenticity through authorized channels as this specific part number may be discontinued or superseded by updated revisions. Confirm that the physical package matches the required 16-pin DIP footprint and validate the operating temperature range against system specifications before final integration.

Counter Dividers Selection Notes

Select this component for designs requiring precise synchronous counting with minimal propagation delay skew. Ensure the driving logic meets the specified setup and hold times relative to the clock edge. Verify that the load current requirements align with the destination circuit's input thresholds.

Counter Dividers Part Context

This integrated circuit belongs to the Texas Instruments SN74ALS191A family of high-speed ECL-compatible logic devices. It provides a robust solution for complex digital sequencing tasks within industrial and commercial electronic systems requiring reliable binary arithmetic operations.

Counter Dividers Replacement Considerations

SN74ALS191AN