STMicroelectronics M74HC126B1R Quad Buffer/Line Driver

The M74HC126B1R is a high-speed CMOS Quad Buffer/Line Driver manufactured by STMicroelectronics. This integrated circuit is designed to be used in a wide range of applications, from logic buffering to driving high-capacitance loads with the added feature of 3-state outputs. The device is a part of the HC (High-speed CMOS) family, which ensures a balanced compromise between speed and power consumption.

The M74HC126B1R is equipped with four independent buffer/line drivers, each with its own output enable (OE) control. The 3-state outputs allow the device to be used in bus-oriented applications. When the output enable (OE) input is high, the output is in a high-impedance state, which effectively disconnects the output from the circuit, allowing for multiple devices to share a common bus line without interference.

Each buffer of the M74HC126B1R can sink or source currents up to 8 mA at 5V, providing good driving capabilities. The device can operate over a wide voltage range from 2V to 6V, making it compatible with TTL levels and capable of interfacing with 5V logic found in microcontrollers and other digital systems.

With its fast propagation delay and low quiescent current, the M74HC126B1R is an excellent choice for power-sensitive and high-speed applications. The device is available in a DIP-14 package, which is suitable for through-hole mounting, providing ease of integration into existing designs or prototyping on breadboards.

Key features of the M74HC126B1R include:

• High-Speed CMOS technology
• Quad buffer with 3-state outputs
• Wide operating voltage range (2V to 6V)
• Output drive capability: 8 mA at 5V
• Low power consumption: 20 µA maximum ICC
• High noise immunity characteristic of CMOS devices
• Compliance with JEDEC standard no. 7A requirements
• ESD performance:
  • HBM: 1 kV
  • MM: 200 V
• Available in DIP-14 package

Overall, the M74HC126B1R is a versatile and reliable component for any designer looking to incorporate buffering with high-drive capability and 3-state logic into their electronic projects or commercial products.