SCAN182373ASSC

Latches Overview

The SCAN182373ASSC is a transparent latch manufactured by Fairchild Semiconductor, housed in a 56-pin SSOP package. It features two independent channels with nine-bit boundary scan memory drivers per channel. The device operates within a supply voltage range of 4.5 V to 5.5 V and exhibits a transmission delay of 4.5 ns. Outputs are tri-state with 25-ohm series resistors, supporting high and low output currents suitable for driving loads directly.

Latches Feature Summary

• Integrates boundary scan memory drivers for testability
• Provides tri-state outputs with integrated series resistance
• Supports transparent latch functionality for data retention

Latches Applications

• Boundary scan testing infrastructure
• JTAG interface implementations
• High-speed data transmission systems

Latches Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or ON Semiconductor following the acquisition. Confirm the package type is 56-SSOP and the logic family matches the specified transparent latch characteristics. Ensure the datasheet references the 25-ohm series resistor outputs and 9:9 channel configuration to match the specific part number requirements.

Latches Selection Notes

Select this component when boundary scan capabilities are required alongside transparent latching functions. The integrated 25-ohm series resistors simplify PCB layout by reducing signal reflections. Verify that the operating voltage range of 4.5 V to 5.5 V aligns with the system power supply constraints before integration into the design.

Latches Part Context

This device belongs to the SCAN/JTAG/3J series from Fairchild Semiconductor, designed for digital logic applications requiring testability features. The series integrates boundary scan memory drivers with standard latch functionality, facilitating compliance with IEEE 1149.1 standards for on-board testing and debugging of electronic assemblies.

Latches Replacement Considerations

Check for equivalent parts within the SCAN182373A series. Verify pin compatibility and electrical specifications such as the 4.5ns delay and 25-ohm output resistance. Ensure the replacement maintains the 56-SSOP package form factor for direct board substitution.