74AHC126S14-13

Overview

The 74AHC126S14-13 is a quadruple 3-state buffer manufactured by Diodes Incorporated in the AHC logic family. It operates within a supply voltage range of 2.0V to 5.5V and features Schmitt trigger inputs for noise immunity. The device provides four independent non-inverting buffers with separate active-high enable pins, allowing outputs to enter a high-impedance state when disabled. It supports output currents of 8mA at VCC = 4.5V and includes ESD protection exceeding JESD 22 standards. Packaged in an SO-14 surface-mount format, it is designed for mixed-voltage environments.

Feature Summary

• Provides four independent non-inverting buffer gates with separate active-high data enable inputs
• Features Schmitt trigger action at all inputs to improve noise immunity
• Outputs capable of sinking or sourcing 8mA at VCC = 4.5V
• Inputs tolerant to 5.5V, facilitating voltage translation between 3.3V and 5.5V systems

Applications

• General purpose logic circuits
• PCs, networking equipment, notebooks, and netbooks
• Computer peripherals including hard drives and CD/DVD ROMs
• TV, DVD, DVR, and set-top boxes

Procurement Notes

Verify the specific package suffix 'S14' corresponds to the SO-14 footprint required for your PCB layout. Confirm that the '-13' suffix indicates tape and reel packaging if automated assembly is planned. Ensure the design accommodates the specified operating temperature range of -40°C to +125°C. Cross-reference the datasheet revision DS35346 Rev. 4 to ensure compatibility with current manufacturing specifications.

Selection Notes

Select this component when a quad buffer with individual tri-state control is required. The AHC series offers faster switching speeds compared to standard HC logic while maintaining CMOS low power consumption. The 5.5V input tolerance makes it suitable for interfacing between different voltage domains without additional level shifters. Consider the SO-14 package dimensions against available board space constraints.

Part Context

This part belongs to the 74AHC126 family of quadruple 3-state buffers. It shares functional similarities with the 74AHC125 but differs in the polarity of the enable signal; the 126 uses active-high enables. It is part of Diodes Incorporated's broader portfolio of AHC logic devices designed for high-speed, low-power applications in consumer electronics and computing hardware.

Replacement Considerations

The 74AHC126T14-13 serves as a direct functional substitute if a TSSOP-14 package is preferred over the SO-14 form factor. Other manufacturers producing JEDEC-compliant 74AHC126 devices may be compatible, provided pinouts and electrical characteristics match the original specification.