SN74F163AN

Counter Dividers Overview

The SN74F163AN is a synchronous, presettable 4-bit binary counter from the Texas Instruments SN74F163A series. It features internal carry look-ahead circuitry for high-speed counting applications and operates on the positive-going edge of the clock signal. The device supports fully synchronous clear and load functions, allowing outputs to change coincident with each other without ripple-clock spikes. It includes ENP and ENT inputs for cascading and an RCO output for overflow indication. The component is housed in a 16-pin PDIP package and operates within a supply voltage range of 4.5 V to 5.5 V.

Counter Dividers Feature Summary

• Internal carry look-ahead circuitry enables fast counting and simplified n-bit cascading without additional gating logic.
• Fully synchronous operation ensures all flip-flops are clocked simultaneously, eliminating output counting spikes associated with asynchronous counters.
• Synchronous clear and load functions allow modification of count length and presetting to any value between 0 and 15 based on setup conditions.

Counter Dividers Applications

• High-speed binary counting designs requiring minimal propagation delay
• N-bit cascaded counter systems utilizing internal carry look-ahead
• Programmable timing circuits using synchronous clear or load capabilities

Counter Dividers Procurement Notes

Verify the specific ordering suffix against the Package Option Addendum to confirm the exact physical package type and manufacturing status. Confirm RoHS compliance and lead finish details as these may vary by production batch. Ensure the selected variant matches the required thermal impedance and operating temperature range for the intended application environment.

Counter Dividers Selection Notes

Select this component when synchronous operation and high-speed performance are critical, as it eliminates the counting spikes found in asynchronous designs. The internal carry look-ahead simplifies multi-stage expansion compared to standard ripple counters. Verify that the 4.5 V to 5.5 V supply voltage range aligns with the system power rails before integration.

Counter Dividers Part Context

This part belongs to the SN74F163A family of synchronous 4-bit binary counters manufactured by Texas Instruments. The 'AN' suffix specifically denotes the PDIP (Plastic Dual In-line) package configuration. This family is designed for applications requiring precise timing control and high-frequency operation within standard logic voltage ranges.

Counter Dividers Replacement Considerations

Direct substitutes include SN74F163AD and SN74F163ADR. These variants share identical logical functionality but differ in packaging; the AD and ADR parts utilize SOIC packages instead of the PDIP format used by the AN variant.

Counter Dividers FAQ

How does the SN74F163AN handle clearing the counter?

The clear function is synchronous. A low logic level at the CLR input sets all four flip-flop outputs to low after the next rising edge of the clock, regardless of the levels of ENP and ENT.

What is the purpose of the internal carry look-ahead circuitry?

The internal carry look-ahead allows for cascading counters for n-bit synchronous applications without requiring additional external gating logic, facilitating faster and more efficient multi-stage counting.