SN74F38DG4

Overview

The SN74F38DG4 is a Texas Instruments logic device containing four independent 2-input NAND buffer gates with open-collector outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range of 0°C to 70°C. The component features low-level output current capabilities up to 64 mA and high-level output leakage currents of 250 µA at 4.5 V. Switching characteristics include propagation delays ranging from 1 ns to 14 ns depending on load conditions.

Feature Summary

• Contains four independent 2-input NAND buffer gates
• Features open-collector outputs requiring external pullup resistors
• Supports active-low wired-OR or active-high wired-AND functions when connected to other open-collector outputs
• Capable of generating higher VOH levels

Applications

• Implementing active-low wired-OR logic functions
• Implementing active-high wired-AND logic functions
• Generating higher output voltage levels via external pullups

Procurement Notes

Verify the specific ordering suffix 'G4' against the latest Package Option Addendum to confirm RoHS compliance status and lead finish specifications. Ensure the selected package variant matches the required PCB footprint, as the SN74F38 family includes SOIC, PDIP, and SOP options. Confirm that the procurement channel provides valid traceability documentation for this obsolete part number.

Selection Notes

Select this component when designing circuits requiring multiple independent NAND buffers with open-collector topology. Verify that the application environment remains within the 0°C to 70°C commercial temperature range. Ensure external pullup resistors are sized appropriately to meet the required rise times and voltage levels, considering the 64 mA low-level sink capability.

Part Context

This device belongs to the Texas Instruments SN74F series, which utilizes Fast TTL technology. The SN74F38 is the commercial-grade version of the military-specification SN54F38. The 'D' in the model name indicates a Small Outline Integrated Circuit (SOIC) package, while the 'G4' suffix denotes environmental compliance attributes defined by the manufacturer's packaging standards.

Replacement Considerations

Public confirmed substitute part numbers: SN74F38DR, SN74F38N, SN74F38NSR.