ON Semiconductor MC74VHCT125ADTRG Quad Bus Buffer

The MC74VHCT125ADTRG is a high-performance, quad bus buffer from ON Semiconductor that features tristate outputs designed to interface with high-speed memory systems. This integrated circuit is part of the high-speed CMOS VHCT family and is fabricated with silicon gate CMOS technology.

It comes in a TSSOP-14 package, which is a space-saving and surface-mountable design that is ideal for compact PCB layouts. The device is designed to provide high-speed, low-power operation while maintaining CMOS low power dissipation. It is capable of transforming slowly changing input signals into sharply defined, jitter-free output signals, making it suitable for interfacing with high-speed logic systems.

The MC74VHCT125ADTRG has four independent buffer gates with 3-state outputs. Each gate is capable of sinking or sourcing 8mA at 4.5V, making it suitable for driving bus lines or buffer memory address registers. The 3-state outputs allow for connection to a bus-organized system and use in bus buffering with high data flow rate requirements.

Its inputs tolerate voltages up to 5.5V, allowing the device to be used in mixed-voltage environments, and it is compatible with TTL levels. This feature is particularly useful for interfacing with 5V systems, making this buffer a versatile choice for system-level integration. The device also has a broad operating temperature range of -55°C to 125°C, which ensures reliability across various environmental conditions.

Key features of the MC74VHCT125ADTRG include:

• High speed: tPD = 3.8ns (typ) at VCC = 5V
• Low power dissipation: ICC = 2µA (max) at TA = 25°C
• Power down protection provided on inputs
• Low noise: VOLP = 0.8V (max)
• Pin and function compatible with other standard logic families
• Latch-up performance exceeds 300mA
• ESD performance: HBM > 2000V; Machine Model > 200V

The MC74VHCT125ADTRG is suitable for a wide range of applications, including driving bus lines, memory address registers, and as a buffer for data transmission lines. Its robust design and compatibility with high-speed logic make it an essential component in modern electronic systems where efficient data handling and buffering are required.