74HCT126T14-13

Overview

The 74HCT126T14-13 is a quadruple 3-state buffer manufactured by Diodes Incorporated in a TSSOP-14 package. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs with Schmitt trigger action. The device provides four independent buffers, each with a separate active-high enable pin that places the output in a high-impedance state when driven low. It sinks or sources 4mA at VCC = 4.5V and includes ESD protection exceeding JESD 22 standards.

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 robust 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, hard drives, and CD/DVD ROM drives
• TV, DVD, DVR, and set top box systems

Procurement Notes

Verify the specific suffix 'T14' confirms the TSSOP-14 surface-mount package type required for your PCB layout. Confirm RoHS compliance and lead-free status align with environmental regulations. Ensure the operating temperature range of -40°C to +125°C meets your system's thermal requirements before finalizing procurement.

Selection Notes

Select this component when a quadruple non-inverting buffer with 3-state control is needed. It is suitable for designs requiring TTL input compatibility and Schmitt trigger inputs. Consider the TSSOP-14 package if space constraints favor smaller footprints over SO-14 alternatives. Verify that the 4.5V to 5.5V supply range matches your system power rails.

Part Context

This part belongs to the 74HCT series of logic integrated circuits, designed for high-speed CMOS operation with TTL-compatible inputs. It is functionally similar to other 74HCT126 variants but specifically packaged in TSSOP-14. The series is widely used in digital logic applications requiring buffering and signal isolation.

Replacement Considerations

The 74HCT126S14-13 is a pin-compatible alternative available in an SO-14 package. Other manufacturers may offer equivalent parts within the 74HCT126 family, but verify electrical characteristics and package dimensions carefully.

FAQ

What is the logic function of the 74HCT126T14-13?

It functions as a quadruple 3-state buffer with non-inverting logic. Each buffer has a separate enable pin.

How does the enable pin affect the output?

When the enable pin (OE) is driven high, the buffer is enabled and passes the input signal to the output. When driven low, the output enters a high-impedance state.

Does the device include Schmitt trigger inputs?

Yes, the datasheet specifies Schmitt trigger action at all inputs to improve noise immunity.