The M74HCT126RM13TR is a high-speed CMOS Quad Bus Buffer manufactured by STMicroelectronics, designed to provide efficient interfacing between digital systems with different voltage levels or impedances. This integrated circuit is part of the HCT family, which ensures compatibility with TTL logic levels while maintaining the low power consumption of CMOS technology.

Key Features

• Logic Type: Quad Bus Buffer
• Output Type: 3-State
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -55°C to +125°C
• Package: SMD/SMT SO-14
• Mounting Style: Surface Mount
• Pin Count: 14
• Propagation Delay Time: 18 ns at 4.5V
• Compatibility: TTL input compatible
• RoHS: Compliant

Applications

The M74HCT126RM13TR is suitable for a wide range of applications that require buffering with three-state outputs. These include:

• Bus driving
• Memory address driving
• Line driving
• Control systems
• Logic level shifting

Product Description

The M74HCT126RM13TR features four independent buffer gates, each with a three-state output. The three-state function allows the outputs to assume a high impedance state, effectively disconnecting them from the circuit, which is particularly useful in multiplexed data transmission systems or when multiple outputs must be connected to a common bus line without interference.

This device is characterized for operation from -55°C to +125°C, making it suitable for industrial and automotive applications that require robust performance in extreme conditions. The supply voltage range of 4.5V to 5.5V allows for flexible integration into 5V systems, and the propagation delay time ensures fast response for critical timing applications.

STMicroelectronics' M74HCT126RM13TR comes in a compact SO-14 package and is designed for surface mount technology (SMT), which is ideal for modern high-density electronic assemblies. Compliance with RoHS standards ensures that this product is environmentally friendly and suitable for use in a wide range of markets and applications where hazardous substances are restricted.