CD82C284-12

Overview

The Harris Corporation CD82C284-12 is a single-circuit CMOS clock generator designed for CPU timing applications. It accepts crystal input and provides a dedicated clock output with a 1:2 frequency ratio. The device operates within a supply voltage range of 4.5V to 5.5V and supports maximum frequencies up to 25MHz. It is housed in an 18-pin CERDIP package (18-DIP, 0.300 inch pitch) suitable for through-hole mounting. The component functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Single-channel clock generation with 1:2 input-to-output frequency ratio
• Crystal input interface for stable clock source
• Operates on standard 5V logic supply (4.5V–5.5V)
• Maximum operating frequency of 25MHz
• 18-pin ceramic dual in-line package (CERDIP)

Applications

• CPU clock signal generation
• System timing circuits
• Digital logic synchronization

Procurement Notes

Verify the manufacturer origin, as Harris Corporation assets were acquired by Renesas Electronics. Confirm the specific package variant matches the required 18-CERDIP form factor. Ensure the operating temperature range of 0°C to 70°C meets system requirements, as industrial or extended variants may differ. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a dedicated 1:2 divider clock generator is required for CPU systems. The 25MHz limit defines the maximum system clock speed. The 18-pin DIP footprint dictates PCB layout constraints. Verify that the crystal input requirement aligns with the oscillator design, as internal oscillators are not present.

Part Context

This part belongs to the Harris Corporation high-performance CMOS logic family. It serves as a specialized timing solution distinct from general-purpose logic gates. The '12' suffix typically denotes the commercial temperature grade (0°C to 70°C). Similar parts in the series may offer different ratios or packaging options.

Replacement Considerations

Check for equivalents from Renesas Electronics, which acquired Harris's semiconductor business. Verify pin compatibility and electrical specifications against alternative clock generators from other manufacturers such as Intel or Texas Instruments.