SN74AS373NSR

Overview

The SN74AS373NSR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a commercial temperature range of 0°C to 70°C. The device features buffered control inputs and pnp inputs that reduce dc loading on data lines. Key electrical characteristics include a low-level output current of 32 mA and a high-level output current of -15 mA. Propagation delay from D to Q ranges from 3.5 ns to 6 ns, while the LE-to-Q propagation delay spans 5 ns to 11.5 ns.

Feature Summary

• Features eight latches in a single package designed for driving highly capacitive or relatively low-impedance loads.
• Includes a buffered output-enable input to place outputs in normal logic states or high-impedance states without affecting internal operations.
• Utilizes pnp inputs to significantly reduce dc loading on data lines during operation.

Applications

• Implementing buffer registers
• Configuring I/O ports
• Building bidirectional bus drivers
• Serving as working registers

Procurement Notes

Verify the specific ordering suffix 'NSR' corresponds to the SOP (NS) package and tape-and-reel carrier format. Confirm RoHS compliance status and lead finish details via the latest TI Package Option Addendum. Ensure the procurement channel provides valid traceability documentation for catalog production parts.

Selection Notes

Select this component when high-speed performance is required alongside strong drive capabilities for bus applications. The AS series offers faster switching speeds compared to standard TTL or ALS variants. Verify that the system power supply remains strictly within the 4.5 V to 5.5 V range to maintain timing specifications and prevent damage.

Part Context

This part belongs to the SN54/74AS family of octal transparent D-type latches. It shares functional similarities with the SN74ALS373A but provides superior speed and drive strength. The NSR suffix indicates surface-mount packaging in a tape-and-reel configuration suitable for automated assembly processes.

Replacement Considerations

SN74ALS373ANSR