Texas Instruments

SN74F38D

SN74F38D Description

The SN74F38D from Texas Instruments is a high-performance quad 2-input NAND gate with open-collector outputs, designed for 4.5V to 5.5V operation. Housed in a 14-pin SOIC package, this logic IC is part of the 74F series, offering low propagation delays (12.5ns at 5V, 50pF) and robust performance in digital systems. Its open-collector outputs allow for flexible interfacing with higher-voltage circuits or driving loads like LEDs and relays. The device operates within a 0°C to 70°C temperature range, making it suitable for industrial and commercial applications.

SN74F38D Features

• Logic Type: Quad 2-input NAND gate with open-collector outputs for versatile signal conditioning.
• High-Speed Operation: Max propagation delay of 12.5ns at 5V, ensuring rapid signal processing.
• Wide Voltage Range: Supports 4.5V to 5.5V, compatible with standard TTL levels.
• Low Power Consumption: Quiescent current of 7mA (max), optimizing energy efficiency.
• Robust Design: ROHS3 compliant and REACH unaffected, meeting environmental regulations.
• Surface-Mount Package: 14-SOIC for compact PCB integration.
• Input Thresholds: 0.8V (Low) and 2V (High), ensuring reliable logic level detection.

SN74F38D Applications

• Digital Logic Systems: Ideal for bus interfacing, signal gating, and logic inversion in microcontrollers and FPGAs.
• Industrial Control: Used in PLC modules, motor drivers, and automation systems due to its noise immunity.
• LED/Relay Driving: Open-collector outputs enable direct control of higher-voltage peripherals.
• Legacy Equipment: Suitable for retrofitting older TTL-based systems requiring reliable NAND functionality.
• Test & Measurement: Ensures precise timing in pulse shaping and clock distribution circuits.

Conclusion of SN74F38D

The SN74F38D stands out for its high-speed performance, open-collector flexibility, and robust construction, making it a preferred choice for digital design engineers. Its low propagation delay and wide voltage tolerance ensure reliable operation in demanding environments, while its surface-mount package simplifies modern PCB assembly. Although marked as Last Time Buy, it remains a dependable solution for legacy upgrades and new designs requiring efficient NAND gate functionality.