SN74HC193NSR

Counter Dividers Overview

The SN74HC193NSR is a 4-bit synchronous reversible up/down binary counter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device features fully synchronous counting with look-ahead circuitry for cascading, parallel asynchronous load capability for modulo-N lengths, and an asynchronous clear function. It utilizes a 16-pin SOP (NS) package.

Counter Dividers Feature Summary

• Synchronous operation eliminates output counting spikes associated with asynchronous counters
• Look-ahead circuitry enhances cascaded counter performance without external logic
• Parallel asynchronous load allows independent presetting of outputs for modulo-N applications
• Asynchronous clear input forces all outputs low independently of count or load inputs

Counter Dividers Applications

• Cascaded binary counting systems
• Modulo-N frequency dividers
• Digital timing and sequencing circuits
• Reversible event counting applications

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to the tape-and-reel packaging format as documented in the manufacturer's official package addendum. Confirm that the NS package designation matches the required surface-mount footprint dimensions for your PCB layout. Ensure compliance with RoHS directives and lead finish specifications listed in the current production status documentation.

Counter Dividers Selection Notes

Select this component when synchronous bidirectional counting is required to prevent ripple-clock glitches. The HC series offers wide voltage compatibility and standard LSTTL drive capabilities. Consider the SOP-16 package constraints regarding thermal impedance and board space compared to other available package options like SOIC or TSSOP variants within the same family.

Counter Dividers Part Context

This device belongs to the SN74HC193 family of 4-bit synchronous reversible counters. It shares functional characteristics with other members of the 74HC logic family but is distinguished by its specific pinout and package configuration. The NS package variant provides a surface-mount solution suitable for automated assembly processes while maintaining the electrical performance standards defined for the catalog product line.

Counter Dividers Replacement Considerations

SN74HC193DR

Counter Dividers FAQ

How does the SN74HC193NSR handle direction control during counting?

Counting direction is determined by pulsing either the UP or DOWN clock input while the opposite clock input remains high.

What is the function of the BO and CO outputs?

The borrow (BO) and carry (CO) outputs generate pulses to facilitate easy cascading of multiple counters without additional external circuitry.