CS82C54-12Z

Overview

The CS82C54-12Z is a CMOS programmable interval timer manufactured by Renesas Electronics Corporation. It contains three independent 16-bit counters capable of handling clock input frequencies up to 12MHz. The device operates on a single 5V power supply with a voltage range of 4.5V to 5.5V. Key electrical parameters include a maximum propagation delay of 100 ns, high-level output current of 2.5 mA, and low-level output current of -2.5 mA. It is housed in a PLCC-28 surface-mount package and supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Three independent 16-bit programmable counters
• Maximum clock frequency of 12MHz
• CMOS output type with 100 ns max propagation delay
• PLCC-28 surface-mount packaging

Applications

• Event counting
• Elapsed time indication
• Programmable one-shot generation

Procurement Notes

The CS82C54-12Z is listed as End-of-Life (EOL) by the manufacturer. Distribution availability is restricted, with some sources indicating no sales in certain regions. Verification of current stock status and lifecycle status through official Renesas channels or authorized distributors is required before procurement planning.

Selection Notes

Select this component for designs requiring three independent 16-bit timers with 12MHz capability in a PLCC-28 package. Ensure the system environment stays within 0°C to +70°C and provides a stable 4.5V to 5.5V supply. Consider the EOL status when designing for long-term production viability.

Part Context

This part belongs to the 82C54 series of high-performance CMOS programmable interval timers. It is functionally compatible with industry-standard NMOS 8253 timers but offers lower power consumption due to static CMOS design. The series includes variants with different speed grades and packages, such as the CP82C54Z and CS82C54Z96.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, alternative sourcing may require checking for surplus inventory or evaluating functional equivalents from other manufacturers that match the 16-bit counter architecture and PLCC-28 footprint.