D82C284-12

Overview

The Altera D82C284-12 is a single-circuit clock generator designed for CPU applications. It operates within a 4.75V to 5.25V supply range and supports frequencies up to 25MHz. The device accepts crystal input and provides two clock outputs with a 1:2 ratio. It lacks differential I/O capabilities and is housed in an 18-CDIP package suitable for through-hole mounting. The component functions reliably across a commercial temperature range of 0°C to 85°C.

Feature Summary

• Single-circuit clock generator architecture
• Crystal input with dual clock outputs (1:2 ratio)
• Operates at frequencies up to 25MHz
• 18-CDIP through-hole package

Applications

• CPU clock generation systems

Procurement Notes

Verify the specific revision level and manufacturing date code against current inventory records. Confirm that the 18-CDIP through-hole package aligns with existing PCB footprints. Ensure voltage supply constraints match the 4.75V–5.25V requirement for stable operation.

Selection Notes

Select this component when a dedicated crystal-input clock generator is required for CPU timing. The 25MHz maximum frequency and single-circuit design suit standard digital logic applications. Consider the 18-CDIP package size for mechanical compatibility during board layout.

Part Context

This part belongs to the broader category of application-specific clock and timing solutions. It serves as a discrete timing source rather than a programmable FPGA or CPLD device, providing fixed-frequency clock signals for system synchronization.

Replacement Considerations

Check for direct pin-compatible replacements from other manufacturers offering 18-CDIP clock generators. Verify that substitute parts maintain the same 25MHz frequency limit and 5V supply tolerance.