CD74HC126E

Overview

The CD74HC126E is a high-speed CMOS logic quad buffer with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to +125°C. The device features four independent buffers, each with a single bit width, housed in a 14-pin DIP package. Key electrical characteristics include an output current capability of 7.8mA for both high and low states. The component is designed for through-hole mounting and complies with RoHS3 standards.

Feature Summary

• Provides four independent non-inverting buffer channels with true output functionality.
• Integrates three-state output control to facilitate bus-oriented architectures.
• Utilizes high-speed CMOS technology for efficient power consumption and performance.
• Supports operation across an extended industrial temperature range.

Applications

• Bus-oriented system designs requiring signal buffering
• Clock distribution networks
• Memory address data bus drivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pin compatibility and package type. Ensure the selected variant matches the required voltage and temperature specifications for the target application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and current production status before finalizing procurement decisions.

Selection Notes

Select this component when designing systems that require buffered signals with controlled drive strength on shared buses. The three-state feature allows multiple devices to share a common data line without interference. Consider the 2V to 6V supply range for compatibility with various logic families. The extended temperature rating makes it suitable for harsh industrial environments where standard commercial grade parts may fail.

Part Context

This component belongs to the CD74HC series of high-speed CMOS logic devices produced by Texas Instruments. It is functionally related to other quad buffers like the CD74HC125, differing primarily in the polarity of the enable signal. The device is part of a broader family of logic ICs designed for general-purpose digital applications, offering robust performance in standard DIP packaging for prototyping and through-hole manufacturing.

Replacement Considerations

CD74HC125E serves as a functional substitute with inverted enable logic. SN74HC126PWR offers surface-mount compatibility with identical logical operations. Verify pinout alignment and enable signal polarity when substituting to ensure circuit functionality remains intact.