The UPD74HC244GS-T2 is a high-speed silicon gate CMOS octal buffer/line driver with three-state outputs manufactured by NEC. It belongs to the 74HC family and is characterized by low power consumption, high noise immunity, and fast switching speeds. The three-state outputs make it suitable for bus-oriented applications.

Applications

• Memory addressing: Used as a buffer/driver for memory address lines.
• Data bus buffering: Employed to buffer data lines in a data bus system.
• Line driving: Utilized to drive signals over long distances or to multiple destinations.
• I/O port expansion: Used to expand the number of I/O ports in a system.
• Bidirectional bus interface: Implemented as an interface between bidirectional buses.

Features

• Octal buffer/line driver: Contains eight independent buffer/line drivers in a single package.
• Three-state outputs: Each output can be in one of three states: high, low, or high-impedance (disabled).
• High-speed operation: Provides fast buffering and driving with typical propagation delays around 12 ns.
• Low power consumption: Operates with low static power consumption due to CMOS technology.
• Wide operating voltage range: Functions reliably over a broad voltage range, typically from 2V to 6V.
• High noise immunity: Offers excellent noise immunity, ensuring stable operation in noisy environments.
• Surface mount package (GS): Comes in a small outline integrated circuit (SOIC) package suitable for surface mount technology.

Benefits

• Versatile buffering/driving: Allows for versatile buffering and driving of signals in various applications.
• Fast signal transmission: High-speed operation enables rapid signal transmission and response times.
• Energy efficient: Low power consumption reduces energy requirements and heat dissipation.
• Easy bus interfacing: Three-state outputs simplify bus interfacing and prevent bus contention.
• Compact design: Surface mount package saves space on the PCB, allowing for compact circuit designs.
• Reliable performance: High noise immunity ensures reliable operation even in challenging conditions.

Additional Details

The UPD74HC244GS-T2 typically comes in a 20-pin SOIC package. The device is pin-compatible with the 74HC244 and can be used as a direct replacement. The device has two enable inputs (Ľ1 and Ľ2), each controlling four buffer/drivers. When an enable input is low, the corresponding buffer/drivers are enabled; when an enable input is high, the corresponding outputs are in the high-impedance state. The surface mount package (GS) makes it suitable for high-density PCB designs, and the wide operating voltage and high noise immunity ensure reliable performance in a variety of applications. The '-T2' suffix typically indicates specific packaging and reel options for automated assembly processes.