SN74LS03DR

Inverter Gates Overview

The SN74LS03DR is a quadruple 2-input positive-NAND gate integrated circuit manufactured by Texas Instruments. It belongs to the 74LS logic series and features open-collector outputs, requiring external pull-up resistors for proper operation. The device operates within a supply voltage range of 4.75 V to 5.25 V. It is housed in a 14-pin SOIC package designed for surface-mount technology applications.

Inverter Gates Feature Summary

• Contains four independent 2-input NAND logic gates
• Features open-collector output configuration
• Compatible with standard TTL logic levels

Inverter Gates Applications

• Digital logic circuits requiring NAND functionality
• Bus-oriented systems utilizing open-collector wiring
• General-purpose switching applications

Inverter Gates Procurement Notes

Verify that the specific order code includes the DR suffix to confirm the SOIC-14 surface-mount package variant. Confirm RoHS compliance status as required by project specifications. Ensure external pull-up components are selected to match the open-collector load requirements. Validate operating temperature ranges against environmental constraints.

Inverter Gates Selection Notes

Select this component when four independent NAND gates are required in a compact surface-mount form factor. The open-collector architecture allows for wired-OR connections and level shifting capabilities not available with standard push-pull outputs. Consider the LS series propagation characteristics for timing-sensitive designs.

Inverter Gates Part Context

This part is a surface-mount version of the SN74LS03 family. It provides equivalent logical functionality to through-hole variants but utilizes a small-outline integrated circuit package suitable for automated assembly processes. The device maintains compatibility with existing 74LS design standards.

Inverter Gates Replacement Considerations

SN74LS03N (through-hole equivalent)

Inverter Gates FAQ

Why are external pull-up resistors necessary?

The SN74LS03DR utilizes open-collector outputs which cannot actively drive the output high. External pull-up resistors are required to establish a high logic state.

What is the maximum supply voltage?

The maximum recommended supply voltage is 5.25 V.