8401202SA

Latches Overview

The SN54ALS580B is an octal D-type transparent latch featuring 3-state outputs designed for driving highly capacitive or low-impedance loads. It operates over a military temperature range of -55°C to 125°C with a supply voltage of 4.5 V to 5.5 V. The device includes buffered output-enable (OE) and latch-enable (LE) inputs, allowing data retention in high-impedance states. Package options include ceramic flat (W), ceramic chip carrier (FK), and ceramic DIP (J).

Latches Feature Summary

• Octal D-type transparent latches with 3-state outputs for bus line driving.
• Buffered output-enable input allows high-impedance state without affecting internal operations.
• Bus-structured pinout suitable for bidirectional bus drivers and working registers.

Latches Applications

• Implementing buffer registers in digital systems.
• I/O port interfacing for microprocessor-based designs.
• Bidirectional bus driver implementations.
• Working registers within complex logic circuits.

Latches Procurement Notes

Verify the specific package variant (CFP W, LCCC FK, or CDIP J) matches the target footprint, as the SN54ALS580B designation covers multiple physical packages. Confirm military-grade qualification requirements are met by the SN54 series designation. Ensure the ordering suffix corresponds to the desired lead finish and tube quantity specified in the packaging addendum.

Latches Selection Notes

Select this component when designing systems requiring high-drive capability for capacitive loads or low-impedance buses. The SN54ALS580B is appropriate for applications demanding operation across the full military temperature range (-55°C to 125°C). Consider the AS variant if faster switching speeds are required within commercial temperature limits.

Latches Part Context

This part belongs to the Texas Instruments SN54/74ALS580 family of octal D-type latches. The SN54 series denotes military-grade reliability and extended temperature performance compared to the commercial SN74 variants. It serves as a foundational storage element in high-speed digital logic architectures utilizing ALS technology.

Latches Replacement Considerations

SN74ALS580B: Commercial grade equivalent with 0°C to 70°C operating range. SN74AS580: Faster switching speed alternative within commercial temperature limits. SNJ54ALS580BW: Specific ceramic flat package variant of the same functional device.