74HCT126D,652

Overview

The Nexperia 74HCT126D,652 is a quad buffer and line driver featuring three-state outputs controlled by active HIGH enable inputs. It operates within a supply voltage range of 4.5 V to 5.5 V and utilizes HCT logic levels compatible with TTL standards. The device is housed in a 14-lead SO plastic small outline package (SOT108-1). Key electrical characteristics include a maximum propagation delay of 36 ns at 4.5 V and an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Quad buffer/line driver configuration with independent output enable controls
• Three-state outputs allowing high-impedance OFF-state when disabled
• TTL-compatible input levels for direct interface with standard logic families
• Robust latch-up performance exceeding 100 mA per JESD 78 Class II Level B

Applications

• Bus-oriented communications systems requiring signal buffering
• Clock distribution circuits utilizing three-state control
• Memory and strobe drivers for data transmission lines
• Voltage level translation between mixed CMOS and TTL environments

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the procurement channel provides original manufacturer documentation. Ensure compliance with RoHS directives and REACH regulations as specified in the product data sheet. Check for any automotive qualification requirements if intended for vehicle applications.

Selection Notes

Select this component when TTL-level compatibility is required alongside CMOS low power dissipation. The wide supply voltage range supports various digital logic interfaces. Consider the thermal derating characteristics for total power dissipation when designing for high ambient temperatures or dense PCB layouts.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. It shares functional similarities with the 74HC126 but differs in input threshold voltages to accommodate TTL signaling. The D,652 suffix indicates the specific SOIC-14 packaging and manufacturing batch details defined by the supplier.

Replacement Considerations

The 74HCT126PW serves as a pin-compatible alternative using the TSSOP14 package. Verify package dimensions and lead pitch differences before substitution. Ensure electrical parameters remain within acceptable limits for the target application design.