Texas Instruments

SN7438D

SN7438D Description

The SN7438D is a high-performance NAND gate integrated circuit (IC) from Texas Instruments, designed for a wide range of digital logic applications. This IC is part of the 7400 series and features four independent 2-input NAND gates in a surface-mount package, making it suitable for compact and efficient circuit designs. The SN7438D operates within a supply voltage range of 4.75V to 5.25V and is rated for an operating temperature range of 0°C to 70°C, ensuring reliable performance in various environmental conditions.

Key technical specifications include a maximum propagation delay of 22 nanoseconds at 5V and a maximum load capacitance of 45 picofarads. The input logic levels are defined as 0.8V for low and 2V for high, ensuring compatibility with standard TTL logic levels. The IC also features open collector outputs, providing flexibility in circuit design and allowing for easy interfacing with other logic families.

SN7438D Features

• Logic Type: NAND Gate
• Number of Circuits: 4
• Number of Inputs per Circuit: 2
• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: 0°C to 70°C
• Max Propagation Delay: 22ns @ 5V, 45pF
• Input Logic Levels: Low (0.8V), High (2V)
• Output Type: Open Collector
• Package Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Current - Quiescent (Max): 8.5 mA
• Compliance: ROHS3 Compliant, REACH Unaffected

SN7438D Applications

The SN7438D is ideal for applications requiring compact and efficient digital logic solutions. Its open collector outputs make it suitable for interfacing with various digital systems, including microcontrollers, microprocessors, and other digital circuits. The low propagation delay ensures high-speed performance, making it suitable for applications such as:

• Digital Signal Processing: High-speed logic operations in digital signal processing circuits.
• Microcontroller Interfacing: Interface with microcontrollers for control and data processing.
• Memory Control: Used in memory control circuits for data storage and retrieval.
• Communication Systems: High-speed data transmission and control in communication systems.
• Consumer Electronics: Compact and efficient logic solutions in consumer electronics.

Conclusion of SN7438D

The SN7438D from Texas Instruments is a versatile and high-performance NAND gate IC, offering a combination of compact design, high-speed performance, and compatibility with standard TTL logic levels. Its open collector outputs and surface-mount package make it an ideal choice for a wide range of digital logic applications. The SN7438D is particularly well-suited for applications requiring high-speed processing, compact design, and reliable performance in various environmental conditions.