SN74ALS580BN3

Overview

The SN74ALS580BN3 is an octal D-type transparent latch from the Texas Instruments ALS logic series, housed in a 20-pin PDIP package. It features inverting outputs and operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 18 ns, a low-level output current capability of 32 mA, and a high-level output current of -2.6 mA. The device draws a working power supply current of 26 mA and functions reliably across a temperature range of 0°C to +70°C.

Feature Summary

• Octal configuration providing eight independent transparent latch circuits for parallel data storage
• Inverting logic outputs designed for bus-structured system architectures
• Three-state buffer-type outputs capable of driving bus lines directly

Applications

• Bus-structured digital systems requiring data latching
• Parallel data storage applications in computer peripherals
• Industrial control systems utilizing TTL-compatible logic levels

Procurement Notes

Verify the specific suffix 'BN3' against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Ensure the procurement channel provides original manufacturer packaging to prevent counterfeit components. Cross-reference the datasheet revision date with your design requirements to validate electrical characteristics and mechanical dimensions before finalizing orders.

Selection Notes

Select this component when an octal latch with inverting outputs and three-state capabilities is required for bus interfacing. The ALS series offers improved speed and power consumption compared to standard LS logic. Verify that the 20-pin DIP package fits the target PCB footprint and that the operating voltage range aligns with the system's 5V rail specifications.

Part Context

This part belongs to the SN74ALS580B family of octal latches manufactured by Texas Instruments. The 'BN3' designation typically indicates a specific tape-and-reel or tube packaging variant within the broader ALS logic product line. It serves as a sequential logic solution for storing eight bits of data with transparent operation controlled by an enable signal.

Replacement Considerations

Direct substitutes include the SN74ALS580BN and other variants within the SN74ALS580B family. Verify pin-to-pin compatibility and identical electrical specifications before substitution. Alternative packages such as FN (PLCC) may require adapter solutions if form factor changes are acceptable.