IS82C54-10

Programmable Timers And Oscillators Overview

The IS82C54-10 is a high-performance CMOS Programmable Interval Timer manufactured by Renesas Electronics Corporation. It features three independently programmable and functional 16-bit counters, each capable of handling clock input frequencies up to 10MHz. The device utilizes an advanced 2-micron CMOS process for low power operation while maintaining compatibility with industry-standard processors like the 80C86 and 80C286. It operates on a single 5V supply, supports six programmable timer modes including binary or BCD counting, and is housed in a PLCC-28 package with an operating temperature range of -40°C to +85°C.

Programmable Timers And Oscillators Feature Summary

• Three independent 16-bit counters with 10MHz maximum clock frequency
• Six programmable timer modes for event counting, one-shot, and square wave generation
• Static CMOS design ensuring low power consumption (10µA standby, 10mA active)
• Fully TTL compatible with standard 8080/8085/8086/8088 bus architectures

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify RoHS compliance status as legacy variants may differ. Confirm moisture sensitivity level (MSL) requirements for surface mount assembly processes. Check for specific ordering suffixes that denote lead-free annealing or extended temperature grades. Ensure availability of updated datasheets from Renesas official channels.

Programmable Timers And Oscillators Selection Notes

Select this component when three independent 16-bit timers are required with a 10MHz clock limit. Compare against IS82C54-8 if lower speed suffices for reduced power. Verify package compatibility between PLCC-28 and PCB footprint. Consider CDIP-24 variants like ID82C54 for through-hole applications requiring similar functionality.

Programmable Timers And Oscillators Part Context

The IS82C54-10 belongs to the 82C54 family, which serves as the CMOS enhancement of the NMOS 8253/8254 timers. It provides equivalent functionality with significantly lower power dissipation. The '10' suffix indicates the 10MHz clock speed variant, distinct from the 8MHz base model.

Programmable Timers And Oscillators Replacement Considerations

Direct pin-compatible replacements include the ID82C54 (CDIP-24 package) and CS82C54Z96 (PLCC-28, 8MHz). Verify electrical parameters such as propagation delay and output drive current when substituting.