54F257/B2A

Overview

The Rochester Electronics LLC 54F257/B2A is a high-speed quad bus switch belonging to the 54F series. It features four independent single-pole double-throw (SPDT) switches, providing signal routing flexibility in digital logic circuits. The device supports a wide operating voltage range and is designed for applications requiring low on-resistance and fast switching speeds. Manufactured under licensed processes, it maintains compatibility with standard TTL logic families while offering enhanced performance characteristics suitable for complex system interconnects.

Feature Summary

• Contains four independent SPDT switches for flexible signal path management
• Supports high-speed data transmission with low propagation delay
• Compatible with standard TTL logic voltage levels

Applications

• Digital signal routing in communication systems
• Data bus multiplexing in industrial control units
• Logic level translation interfaces

Procurement Notes

Verify the specific suffix B2A against the original manufacturer datasheet to confirm package type and temperature grade. Ensure the component source documentation explicitly lists Rochester Electronics LLC as the authorized licensee. Request lot traceability records to validate manufacturing origin and compliance with current environmental standards before finalizing procurement.

Selection Notes

Select this component when designing systems requiring multiple independent signal paths within a single package. Evaluate the on-resistance specifications against the load requirements to ensure signal integrity. Confirm that the operating temperature range meets the environmental conditions of the target application site without requiring additional thermal management.

Part Context

This part belongs to the 54F series of high-speed logic devices, originally developed for military and aerospace applications due to its wide temperature range. Rochester Electronics continues production through licensed manufacturing agreements, preserving legacy designs that are no longer actively supported by the original OEMs. The 54F family is known for its robust performance in harsh environments.

Replacement Considerations

Direct replacements include the 54F257 from other qualified manufacturers if pin-compatible. Verify electrical parameters such as propagation delay and output drive capability to ensure functional equivalence. Cross-reference the specific B2A suffix details with alternative suppliers to match packaging and thermal specifications.