CD40208BD

Shift Registers Overview

The CD40208BD is a CMOS logic integrated circuit manufactured by Harris Corporation, classified as a shift register within the 4000/14000/40000 series. It features a configuration of four independent 4-bit registers, providing a total of sixteen data storage bits. The device utilizes a 24-pin Ceramic Dual In-Line Package (CDIP) with a standard 0.300-inch (7.62mm) width. Designed for robust industrial environments, it operates across an extended temperature range from -55°C to +125°C and supports supply voltages typical for CMOS logic families. The output stage provides tri-state capability, allowing for bus-oriented applications.

Shift Registers Feature Summary

• Four independent 4-bit serial-in parallel-out or parallel-in serial-out shift register sections
• Tri-state outputs enabling direct connection to system buses without external buffering
• Ceramic dual in-line package construction suitable for high-reliability and harsh environment applications

Shift Registers Applications

• High-reliability military and aerospace digital systems requiring ceramic packaging
• Industrial control systems operating in extreme temperature environments
• Data acquisition systems utilizing bus-oriented data transfer architectures

Shift Registers Procurement Notes

Verify RoHS compliance status carefully, as this specific part number is documented as non-compliant in official distributor databases. Confirm the package type is the 24-CDIP variant and check for lead-free availability if required by your assembly process. Ensure the supplier provides traceable documentation for the Harris Corporation manufacturing origin given the component's age and potential for alternative sourcing.

Shift Registers Selection Notes

Select this component when a multi-channel shift register with tri-state outputs is required in a ruggedized form factor. The CDIP package offers superior thermal and mechanical stability compared to plastic equivalents. Consider the 4x4 bit architecture for applications needing multiple isolated data streams. Verify that the system voltage levels are compatible with standard CMOS logic thresholds before integration into the design.

Shift Registers Part Context

This component belongs to the Harris Corporation 4000-series CMOS logic family, known for wide voltage operation and low power consumption. The manufacturer, now part of Renesas Technology, has a history of producing high-quality hybrid and monolithic ICs for defense and industrial sectors. The CD40208BD represents a specialized multiplexer/register solution distinct from standard single-function logic gates.

Shift Registers Replacement Considerations

Direct pin-to-pin replacements may be limited due to the specific 24-CDIP ceramic package. Evaluate modern CMOS shift registers such as the CD4094 or CD4014 if the package can be adapted, though functional equivalence must be verified against the tri-state requirements.