FST16232MEA

Overview

The FST16232MEA is a synchronous 16-bit to 32-bit multiplexer/demultiplexer bus switch manufactured by Fairchild Semiconductor. It belongs to the CBT/FST/QS/5C/B series and utilizes CMOS technology with TTL-compatible inputs. The device features one functional unit with 16 input lines and 32 output lines, providing true output polarity. It operates within a supply voltage range of 4 V to 5.5 V, with a nominal voltage of 5 V. The component is supplied as an uncased chip die in a rectangular package form with 56 terminals.

Feature Summary

• Enables connection between two separate datapaths for multiplexing or demultiplexing onto a single path without adding propagation delay.
• Provides low on-resistance switch connections between ports to minimize signal loss.
• Features synchronous control select pins that are clocked on the rising edge of the clock signal when the enable pin is low.
• Designed to generate minimal ground bounce noise during operation.

Applications

• High-speed data routing in digital systems
• Bus switching applications requiring low propagation delay
• Multiplexing multiple data sources to a single destination

Procurement Notes

Verify the specific die revision and packaging specifications against the official Fairchild datasheet before procurement. Confirm that the uncased chip format meets your assembly requirements. Ensure compatibility with the 4 V to 5.5 V supply voltage range. Check for any RoHS compliance status updates as the original documentation may indicate non-compliance. Validate terminal count and package dimensions for your PCB layout.

Selection Notes

Select this component when a synchronous 16-to-32 bit mux/demux function is required with minimal signal distortion. It is suitable for designs needing low ground bounce and high-speed performance. Consider the die package type if surface-mount assembly is not feasible. Ensure the system logic levels are compatible with the CMOS/TTL interface characteristics.

Part Context

This part is part of the Fairchild Switch FST16232 family, which includes various package options such as CW and MEA suffixes. The FST16232 series is designed for high-speed applications where signal integrity is critical. It serves as a bridge between different data paths in complex digital circuits, offering flexibility in data routing configurations.

Replacement Considerations

Check for other suffixes like FST16232CW which share the same core functionality but differ in packaging. Verify pinout compatibility if substituting with similar mux/demux devices from other manufacturers. Ensure the replacement supports the same synchronous control scheme and voltage ranges.