SN74LS373NG4

Latches Overview

The SN74LS373NG4 is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the SN74LS series. It features eight D-type latches with three-state outputs in a 20-pin PDIP package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 18 ns at 5 V. It provides a low-level output current of 32 mA and a high-level output current of -2.6 mA. The component functions as a bus driver with non-inverting polarity and is designed for through-hole mounting.

Latches Feature Summary

• Octal D-type transparent latch architecture providing data storage capability
• Three-state outputs enabling direct connection to system buses
• Shared latch enable (LE) and output enable (OE) inputs for synchronized control

Latches Applications

• Bus-oriented memory mapping
• Register files
• Temporary storage applications

Latches Procurement Notes

Verify the specific suffix 'G4' against official Texas Instruments documentation to confirm lead-free status and RoHS compliance details. Ensure the ordering part number matches the exact package type and temperature grade required for the design. Cross-reference with the latest datasheet revision to confirm pinout and electrical characteristics remain consistent with standard SN74LS373 specifications.

Latches Selection Notes

Select this component when an octal latch with three-state bus driving capability is required in a through-hole application. The LS logic family offers moderate speed suitable for general-purpose digital systems. Verify that the 5V supply voltage and operating temperature range align with the target environment constraints before finalizing the design integration.

Latches Part Context

This component is part of the SN74LS373 family of octal transparent latches. It serves as a fundamental building block for digital logic circuits requiring data retention and bus isolation. The device is widely used in microprocessor-based systems for interfacing between processors and peripheral devices or memory modules.

Latches Replacement Considerations

SN74LS373N

Latches FAQ

What is the function of the OE input?

The Output Enable (OE) input controls the three-state nature of the outputs, allowing them to be placed in a high-impedance state.

How does the LE input affect data storage?

When the Latch Enable (LE) input is high, the latch is transparent, meaning outputs follow inputs. When LE is low, the previous data level is latched.