SN74F163ANSR

Counter Dividers Overview

The SN74F163ANSR is a synchronous 4-bit binary counter from the Texas Instruments SN74F series, housed in a 16-pin SOIC package. It operates on a single 5V supply (4.5V to 5.5V) and supports clock frequencies up to 90 MHz at maximum temperature. The device features internal carry look-ahead circuitry for high-speed cascading without external gating. Key electrical characteristics include a low-level output current of 20 mA and a propagation delay ranging from 2.7 ns to 11 ns depending on load conditions.

Counter Dividers Feature Summary

• Synchronous operation with simultaneous flip-flop clocking eliminates counting spikes associated with asynchronous designs.
• Internal carry look-ahead circuitry enables efficient n-bit cascading for high-speed applications.
• Fully programmable preset capability allows loading any value between 0 and 15 synchronously.
• Synchronous clear function permits easy modification of count length via decoded Q outputs.

Counter Dividers Applications

• High-speed digital counting circuits requiring precise timing synchronization
• Multi-stage binary counters utilizing internal carry look-ahead for cascading
• Programmable frequency dividers using synchronous preset and clear functions

Counter Dividers Procurement Notes

Verify that the specific orderable part number matches the required package type and tape-and-reel specifications. Confirm RoHS compliance status and lead finish details against the latest Package Option Addendum. Ensure operating temperature ranges align with system requirements before finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when synchronous counting behavior is critical to prevent output glitches found in ripple counters. The F-series logic family offers faster switching speeds compared to standard TTL or LS variants. Consider the 20 mA low-level output drive capability for direct interfacing with standard logic loads without additional buffering.

Counter Dividers Part Context

This device belongs to the SN74F logic family, characterized by high-speed performance. It serves as a functional equivalent to other synchronous 4-bit binary counters within the industry standard logic families. The SN74F163A variant specifically integrates internal carry lookahead to simplify multi-bit expansion designs.

Counter Dividers Replacement Considerations

SN74F163AD (Tube packaging)

Counter Dividers FAQ

How does the SN74F163ANSR handle preset operations?

Presetting is fully synchronous; a low logic level at the LOAD input causes the outputs to match the setup data after the next clock pulse, regardless of ENP and ENT levels.

What is the purpose of the RCO output?

The Ripple Carry Output (RCO) produces a high-logic-level pulse when the count reaches 15 and both ENP and ENT are high, enabling successive cascaded stages without additional gating.