CS82C54-10Z

Overview

The CS82C54-10Z is a high-performance CMOS programmable interval timer manufactured by Renesas Electronics Corporation. It features three independent 16-bit counters, each capable of handling clock input frequencies up to 10MHz. The device operates on a single 5V power supply with a voltage range of 4.5V to 5.5V and draws 10mA of operating current. Designed for industrial temperature ranges from 0°C to +70°C, it utilizes static CMOS circuitry for low power consumption while maintaining TTL compatibility. The component is housed in a 28-pin PLCC package.

Feature Summary

• Three independent 16-bit programmable counters
• Maximum clock frequency of 10MHz per counter
• Six programmable timer modes including event counter and one-shot
• Fully TTL compatible with standard 80C86/80C88 processors

Applications

• Event counting and elapsed time indication
• Programmable one-shot pulse generation
• Square wave generation for system timing
• Compatible with 80C86, 80C88, and 80C286 microprocessor systems

Procurement Notes

Verify RoHS3 compliance status before procurement. Check for recent Product Change Notifications (PCN) regarding label or packaging updates issued in December 2025. Confirm availability as the part may have limited stock or extended lead times due to manufacturing changes. Ensure the 28-PLCC package matches the target PCB footprint.

Selection Notes

Select the CS82C54-10Z when a 10MHz maximum clock speed is required, distinguishing it from the 8MHz CS82C54 variant. Choose this industrial grade (0°C to +70°C) version over commercial or military grades based on thermal requirements. Ensure the design supports surface-mount installation via the 28-LCC(J) form factor.

Part Context

This component belongs to the 82C54 series of programmable timers, serving as an enhanced CMOS version of the NMOS 8254. It provides pin compatibility with legacy designs while offering lower power consumption through advanced 2-micron CMOS processing. The series supports binary or BCD counting modes and includes status read-back capabilities for complex control applications.

Replacement Considerations

The IS82C54-10Z is a functionally equivalent alternative from Intersil/Renesas but uses a PLCC-28 package with an extended temperature range (-40°C to +85°C). Verify pinout compatibility and thermal specifications when substituting.