74HCT126S14-13

Overview

The 74HCT126S14-13 is a quadruple 3-state buffer manufactured by Diodes Incorporated in the SO-14 surface-mount package. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs with Schmitt trigger action at all input pins. The device provides four independent non-inverting buffers, each with a separate active-high data enable pin that places the corresponding output in a high-impedance state when driven low. Electrical characteristics include sourcing or sinking 4mA at VCC = 4.5V, with a maximum propagation delay of 38ns at -40°C to +125°C under a 50pF load.

Feature Summary

• Provides four independent buffer gates with 3-state outputs controlled by separate active-high enable pins
• Features Schmitt trigger action at all inputs for improved noise immunity
• Includes ESD protection exceeding JESD 22 standards across multiple test models
• Designed for CMOS low power consumption while maintaining TTL voltage level compatibility

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 box systems

Procurement Notes

Verify the specific S14 suffix corresponds to the SO-14 package variant rather than the TSSOP-14 option. Confirm RoHS compliance and Halogen-free status requirements against project specifications. Ensure operating temperature ranges align with the specified -40°C to +125°C limits. Validate that the 4.5V to 5.5V supply voltage matches the system design constraints before finalizing procurement.

Selection Notes

Select this component when designing systems requiring quadruple buffering with individual channel control via active-high enables. The HCT series ensures direct compatibility with TTL logic levels without additional interface circuitry. Consider the SO-14 package dimensions if board space allows for slightly larger footprints compared to TSSOP alternatives. Verify that the 4mA drive capability meets the load requirements for the connected downstream logic gates.

Part Context

This part belongs to the 74HCT126 family of quadruple 3-state buffers produced by Diodes Incorporated. It shares functional similarities with other members like the 74HCT125 but differs in its active-high enable configuration. The S14 designation specifically identifies the SO-14 plastic small-outline package variant, distinguishing it from the TSSOP-14 version designated as T14.

Replacement Considerations

The 74HCT126T14-13 serves as a package alternative using the TSSOP-14 footprint while maintaining identical electrical functionality.