The GD74HC125 is a high-speed silicon gate CMOS quad buffer with 3-STATE outputs. This device features four independent buffers, each with its own output enable (OE) input. When the OE input is low, the buffer is enabled, and the output follows the input. When the OE input is high, the output is disabled and goes into a high-impedance state.

Applications

• Logic level shifting
• Bus buffering
• Memory address decoding
• Data transmission
• Microcontroller interfacing
• Line driving

Features

• Quad buffer configuration
• 3-STATE outputs
• High-speed operation: tpd = 8ns (typ.) at VCC = 5V
• Low power dissipation: ICC = 4μA (max.) at VCC = 5V
• Wide operating voltage range: 2V to 6V
• TTL compatible inputs
• Fanout capability: 15 LSTTL loads
• Available in DIP and SOIC packages

Benefits

• Versatile Logic Function: The quad buffer configuration allows for multiple signal buffering or isolation within a single package.
• High-Speed Performance: Fast propagation delays enable the GD74HC125 to be used in high-frequency applications.
• Low Power Consumption: CMOS technology minimizes power dissipation, making it suitable for battery-powered devices.
• Wide Operating Voltage: Operates reliably over a broad voltage range, providing design flexibility.
• Easy Interfacing: TTL compatible inputs simplify interfacing with other logic families.
• Bus Isolation: The 3-STATE outputs enable the GD74HC125 to be used for isolating different sections of a bus system.

Additional Details

The GD74HC125 is part of the 74HC family of integrated circuits, which provides a wide range of logic functions. It is commonly used in digital systems to buffer signals, isolate buses, and perform logic level shifting. The 3-STATE outputs allow multiple devices to share a common bus, with only one device driving the bus at a time. The GD74HC125 is pin-compatible with the 74LS125 and 74HCT125, but offers improved performance and lower power consumption.