SN74ALS621ADWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS621ADWRG4 is an octal bus transceiver from the Texas Instruments ALS logic family, housed in a 20-pin SOIC package. It features open-collector outputs and non-inverting polarity. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL input and output levels. Key electrical parameters include a propagation delay of 33 ns, a low-level output current of 24 mA, and a high-level output current of -15 mA. It functions across a temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent bidirectional data channels for efficient system bus management.
• Open-collector output architecture designed to facilitate wired-OR connections and multi-driver bus environments.
• TTL-compatible input and output voltage thresholds ensuring reliable interfacing with standard digital logic systems.

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data transmission on system buses
• Memory module data routing
• I/O port expansion circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's official documentation to confirm compliance with RoHS directives and lead time requirements. Ensure the selected package variant matches the required PCB footprint and thermal specifications for the intended application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal transceiver with open-collector outputs is required for bus arbitration or wired-logic applications. The ALS series offers a balance of speed and power consumption suitable for general-purpose digital systems operating at standard 5V logic levels.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS621A series of octal bus transceivers manufactured by Texas Instruments. It is a member of the Advanced Low-power Schottky (ALS) logic family, which provides faster switching speeds compared to standard LS logic while maintaining lower power dissipation characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for SN74ALS621ADW as a potential equivalent. Verify pin compatibility and electrical specifications before substitution.