74HC126DB,118

Overview

The Nexperia 74HC126DB,118 is a quad buffer and line driver featuring four non-inverting channels with three-state outputs. It operates within a supply voltage range of 2.0 V to 6.0 V and utilizes CMOS technology for low power dissipation. The device includes input clamp diodes to support interfacing with voltages exceeding VCC. It provides high noise immunity and complies with JEDEC standards JESD8C and JESD7A. The component is housed in an SO14 plastic small outline package (SOT108-1) and supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Features four non-inverting buffer/line drivers with three-state outputs controlled by active HIGH enable inputs.
• Includes input clamp diodes allowing interface to voltages higher than the supply voltage using current limiting resistors.
• Provides high noise immunity and robust latch-up performance exceeding 100 mA per JESD 78 Class II Level B.
• Offers ESD protection meeting ANSI/ESDA/JEDEC JS-001 class 2 (HBM > 2000 V) and JS-002 class C3 (CDM > 1000 V).

Applications

• Bus-oriented systems requiring signal buffering
• Clock distribution circuits
• High-noise environments utilizing wide supply voltage ranges

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm the package type and tape-and-reel specifications. Ensure that the selected variant matches the required thermal derating characteristics for the intended ambient temperature conditions. Cross-reference the part number with official Nexperia distributors to confirm current production status and availability.

Selection Notes

Select this component when designing systems requiring buffered signals with controllable high-impedance states across a wide voltage spectrum. The HC logic family is suitable for applications needing compatibility with standard CMOS levels. Consider the SO14 package dimensions and thermal dissipation limits if operating near maximum temperature ratings or under heavy load conditions.

Part Context

This device belongs to the 74HC/HCT logic family, which represents high-speed CMOS technology compatible with Low-power Schottky TTL (LSTTL) pinouts. The 74HC126 specifically provides non-inverting buffers, distinguishing it from the 74HC125 which utilizes active LOW output enables. It serves as a fundamental building block for digital signal routing and isolation in mixed-voltage logic systems.

Replacement Considerations

The 74HCT126DB,118 is a functional equivalent within the same datasheet family but requires a 4.5 V to 5.5 V supply and accepts TTL input levels. Other packages such as TSSOP14 (74HC126PW) offer identical electrical performance with different physical footprints.