SN74HCT373NSR

Latches Overview

The SN74HCT373NSR 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 features TTL-compatible inputs. The device provides high-current outputs capable of driving up to 15 LSTTL loads, with typical propagation delays ranging from 21 ns to 53 ns depending on conditions. It is housed in a 20-pin Small Outline (SO) package.

Latches Feature Summary

• Transparent D-type latching mechanism where outputs follow data inputs while the latch-enable signal is active
• Three-state output capability allowing connection to bidirectional buses without external interface components
• TTL-voltage compatible inputs for direct interfacing with standard logic families

Latches Applications

• Buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the SO (Small Outline) package dimensions align with the target PCB footprint design constraints before finalizing procurement orders.

Latches Selection Notes

Select this component when designing systems requiring parallel data storage with bus isolation capabilities. Ensure the operating environment remains within the specified -40°C to +85°C temperature range and that the power supply voltage stays strictly between 4.5 V and 5.5 V for reliable operation.

Latches Part Context

This part belongs to the SNx4HCT373 family of octal transparent D-type latches. It shares functional characteristics with other variants such as SN74HCT373DWR and SN74HCT373N, differing primarily in physical package type and manufacturing lot specifications rather than internal circuit topology.

Latches Replacement Considerations

SN74HCT373DWR

Latches FAQ

How does the Output Enable (OE) pin affect latch operation?

The OE pin controls the state of the eight outputs but does not affect the internal latching operations. Data can be entered or retained while the outputs are disabled.

What happens to the outputs when the latch-enable input is low?

When the latch-enable input is taken low, the Q outputs are latched at the logic levels present at the D inputs at that moment.