SN74LS373N

Latches Overview

The SN74LS373N is an octal D-type transparent latch manufactured by Texas Instruments, belonging to the 74LS logic series. It features eight non-inverting outputs with three-state capability, housed in a 20-pin PDIP package for through-hole mounting. The device operates within a supply voltage range of 4.75V to 5.25V and supports a working temperature range from 0°C to 70°C. Key electrical characteristics include a propagation delay of 18 ns at 5V, a low-level output current of 32 mA, and a high-level output current of -2.6 mA.

Latches Feature Summary

• Provides eight D-type transparent latches with non-inverting data paths
• Integrates three-state outputs for direct bus line interfacing
• Supports standard TTL logic levels within the LS series specifications

Latches Applications

• Bus organization systems requiring data storage and buffering
• Microcontroller address latch applications
• General-purpose digital logic circuits

Latches Procurement Notes

Verify the specific suffix 'N' confirms the PDIP-20 through-hole package variant. Confirm RoHS compliance status as indicated by manufacturer documentation. Ensure the operating environment remains within the specified 0°C to 70°C temperature range. Validate power supply stability between 4.75V and 5.25V to maintain signal integrity.

Latches Selection Notes

Select this component when a through-hole octal latch with three-state outputs is required for bus-driven applications. The LS series offers compatibility with standard TTL inputs while providing sufficient drive current for moderate loads. Consider alternative packages like SOIC if surface-mount technology is preferred for the same logical function.

Latches Part Context

This part belongs to the widely used 74LS family of logic integrated circuits. It serves as a fundamental building block for digital systems, specifically designed to capture and hold parallel data. The three-state feature allows multiple devices to share common data lines without interference, making it essential for memory interface and control logic designs.

Latches Replacement Considerations

SN74LS373NE4: Lead-free version of the same PDIP-20 package.

Latches FAQ

What is the control type for the latch enable?

The latch enable is active low, meaning data passes through when the enable signal is low.

Is the output polarity inverting or non-inverting?

The outputs are non-inverting, matching the state of the D inputs when the latch is enabled.