SN74LS373DWR

Latches Overview

The SN74LS373DWR is an octal D-type transparent latch manufactured by Texas Instruments, belonging to the 74LS logic series. It features eight non-inverting D-type latches with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.75V to 5.25V and supports a propagation delay of 12ns. It provides a low-level output current of 24mA and a high-level output current of 2.6mA. The component functions across a temperature range of 0°C to 70°C.

Latches Feature Summary

• Transparent latch operation allows data to pass directly from input to output when the latch enable signal is active.
• Three-state outputs facilitate direct connection to system buses without external buffering requirements.
• Non-inverting polarity ensures that the output state matches the input state during the transparent phase.

Latches Applications

• Address bus latching in microprocessor-based systems
• Data storage for parallel I/O interfaces
• Bus organization systems requiring temporary data holding

Latches Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm RoHS compliance status as indicated by manufacturer documentation. Ensure the operating temperature range meets the environmental constraints of the target application before finalizing procurement orders.

Latches Selection Notes

Select this component when designing circuits requiring octal data storage with bus-compatible outputs. The LS logic family offers a balance between speed and power consumption suitable for general-purpose digital applications. Consider the SOIC package dimensions for PCB layout compatibility and thermal management requirements.

Latches Part Context

This part is part of the standard 74LS373 family of octal latches. It serves as a fundamental building block for digital logic designs involving data retention and bus interfacing. The device is widely used in legacy and modern embedded systems where reliable data capture is necessary.

Latches Replacement Considerations

SN74LS373DRW

Latches FAQ

What is the function of the Output Enable (OE) pin?

The OE pin controls the three-state nature of the outputs. When asserted, it places the outputs in a high-impedance state, effectively disconnecting them from the circuit.

How does the latch enable (LE) pin affect data flow?

When the LE pin is high, the latch is transparent, meaning changes at the D inputs appear immediately at the Q outputs. When LE goes low, the last input value is latched and held.