SN74LS38M

Inverter Gates Overview

The SN74LS38M is a quad 2-input open-collector NAND gate manufactured by onsemi. It belongs to the 74LS logic family and utilizes Schottky barrier diode technology for high-speed operation. The device features four independent gates, each with two inputs and an open-collector output. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a low-level output current of 8 mA. The component is housed in a 14-pin SOIC package and functions reliably across a temperature range of 0°C to +70°C.

Inverter Gates Feature Summary

• Quad 2-input NAND logic function
• Open-collector output configuration
• Schottky barrier diode fabrication process

Inverter Gates Applications

• Digital logic circuit design
• Signal processing systems
• Memory chip select decoding

Inverter Gates Procurement Notes

Verify the manufacturer designation carefully, as the SN74 prefix typically indicates Texas Instruments while the model suffix M often denotes onsemi packages. Confirm RoHS compliance status directly from the official datasheet before procurement. Ensure the specific lot code matches your quality requirements. Check for obsolescence notices or lifecycle changes. Validate pinout compatibility if replacing existing components in established designs.

Inverter Gates Selection Notes

Select this component when open-collector outputs are required for wired-AND configurations or interfacing with different voltage levels. The LS series offers a balance of speed and power consumption suitable for general-purpose digital applications. Verify that the load capacitance and pull-up resistor values align with the specified switching characteristics. Consider thermal management requirements based on the operating environment and duty cycle.

Inverter Gates Part Context

This part is part of the standard 74LS TTL logic family, widely used in legacy and industrial digital systems. The open-collector variant allows for flexible output driving capabilities compared to standard push-pull outputs. It serves as a fundamental building block for complex logic implementations in microprocessor interfaces and control circuits.

Inverter Gates Replacement Considerations

• SN74LS38DR
• DM74LS38N

Inverter Gates FAQ

What is the primary characteristic of the SN74LS38M output stage?

The SN74LS38M features an open-collector output stage, which requires an external pull-up resistor to operate correctly and allows for wired-logic connections.

Does the SN74LS38M support direct CMOS interfacing?

Yes, the open-collector outputs can be pulled up to higher voltages, facilitating interfacing with CMOS devices that operate at different supply voltages than the standard 5V TTL level.