AM29823A/B3A

Shift Registers Overview

The AM29823A/B3A is a high-speed bus driver from the S Series, manufactured by Advanced Micro Devices. It features a single function with nine-bit true output capability and operates on TTL logic levels. The device utilizes a 24-pin DIP package, available in ceramic (CDIP) or plastic (PDIP) variants. Key electrical characteristics include a maximum operating frequency of 71 MHz under nominal supply conditions and a load capacitance of 50 pF. The component supports three-state outputs and includes clear and clock enable functions for precise data control.

Shift Registers Feature Summary

• Provides nine-bit parallel data buffering with true output polarity for signal integrity.
• Integrates clock enable and clear control inputs to manage data flow timing.
• Supports three-state output configuration for efficient bus sharing and isolation.

Shift Registers Applications

• High-speed parallel data bus interfacing in computing systems
• Buffering digital signals in TTL-based logic circuits
• Data transmission stages requiring clock-controlled enablement

Shift Registers Procurement Notes

Verify the specific suffix code to confirm the package material and temperature range. The 'ADE' variant denotes a ceramic DIP package suitable for extended industrial temperatures, while other suffixes may indicate plastic packages with different thermal limits. Confirm lead-free status and RoHS compliance as these components are often non-compliant due to age. Ensure the source provides valid manufacturer documentation to authenticate the part number against known AMD S-Series specifications.

Shift Registers Selection Notes

Select this component when a nine-bit buffered interface with active control is required. The choice between ceramic and plastic packaging depends on the environmental operating conditions and mechanical constraints of the target application. Verify that the system voltage aligns with standard TTL requirements. Consider the 71 MHz speed limit to ensure compatibility with the system clock rates. Check for availability of equivalent modern replacements if long-term supply stability is a concern.

Shift Registers Part Context

This device belongs to the AMD S-Series family of high-speed logic components. It is designed for applications demanding reliable parallel data transfer with minimal propagation delay. The inclusion of clock enable functionality distinguishes it from standard latches or drivers, offering greater flexibility in synchronous data handling architectures within legacy or specialized industrial electronics.

Shift Registers Replacement Considerations

Direct pin-to-pin replacements may be limited due to the proprietary nature of the S-Series. Evaluate generic nine-bit bus drivers with compatible TTL inputs and three-state outputs. Verify that any substitute matches the 24-pin DIP footprint and maintains similar electrical characteristics, particularly the enable/clear logic polarity and drive strength.