D82C54

Programmable Timers And Oscillators Overview

The AMD D82C54 is a high-performance CMOS Programmable Interval Timer manufactured using an advanced 2-micron CMOS process. It features three independently programmable and functional 16-bit counters, each capable of handling clock input frequencies up to 8MHz. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum propagation delay of 150ns. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +85°C. The component utilizes a CDIP-24 package with through-hole mounting, providing CMOS output capabilities with specified high and low level output currents.

Programmable Timers And Oscillators Feature Summary

• Three independent 16-bit programmable counters
• CMOS technology supporting clock inputs up to 8MHz
• Industrial temperature rating (-40°C to +85°C)
• Compatible with standard NMOS 8254 interface

Programmable Timers And Oscillators Applications

• Timing and counting circuits in industrial control systems
• Clock generation for microprocessor-based systems
• Programmable interval timing in embedded applications

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix designation (D) against the manufacturer's current datasheet to confirm the exact operating temperature range and qualification level. Ensure the CDIP-24 ceramic dual in-line package matches the target PCB footprint and thermal requirements. Confirm lead-free status and RoHS compliance relative to the specific manufacturing batch and regional regulations.

Programmable Timers And Oscillators Selection Notes

Select this component when three independent 16-bit timers are required within a single IC. The 8MHz clock frequency limit suits general-purpose timing tasks rather than high-speed pulse generation. Verify that the 5V logic levels align with the system's I/O standards. Consider the CDIP-24 package constraints for board space and assembly methods compared to surface-mount alternatives.

Programmable Timers And Oscillators Part Context

The D82C54 belongs to the 82C54 family of programmable interval timers, which are CMOS versions of the earlier NMOS 8253/8254 devices. This series provides enhanced performance and lower power consumption while maintaining pin-to-pin compatibility with industry-standard timer controllers. The 'D' suffix typically denotes the industrial temperature grade variant within the product line.

Programmable Timers And Oscillators Replacement Considerations

Direct substitutes include the ID82C54 and MD82C54 from Renesas/Intersil, which share identical functionality and pinouts. Other compatible parts may include the 82C54 from various manufacturers, provided the electrical specifications and package dimensions match the design requirements.