SN74LS355N

Overview

The SN74LS355N is an LS series TTL multiplexer manufactured by Texas Instruments. It features a single channel with eight lines to one line configuration and provides complementary outputs. The device utilizes a 20-pin PDIP package for through-hole mounting. Electrical specifications include a supply voltage range of 4.75V to 5.25V, a quiescent current of 46mA, and a propagation delay of 39ns at 5V with a 45pF load.

Feature Summary

• Provides eight-line to one-line multiplexing functionality
• Delivers complementary output signals
• Features tri-state output capability

Applications

• General-purpose digital signal routing
• Data selection in microcontroller systems
• HMI and display peripheral interfacing

Procurement Notes

Verify the specific suffix 'N' confirms the PDIP-20 package variant. Ensure compatibility with standard 5V TTL logic levels. Confirm that the required quiescent current and propagation delay meet system timing constraints before finalizing procurement.

Selection Notes

Select this component when an eight-to-one multiplexer with complementary outputs is required. The LS series offers standard speed suitable for general applications. Verify that the 20-pin DIP form factor fits the target PCB layout and that the operating voltage aligns with the 5V logic family.

Part Context

This part belongs to the Texas Instruments SN74LSxx logic family, designed for low-power Schottky TTL applications. The SN74LS355 specifically addresses scenarios requiring data multiplexing with both true and inverted outputs, distinguishing it from non-complementary variants within the broader multiplexer category.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.