M74HC126YTTR

Overview

The M74HC126YTTR is a high-speed CMOS quad buffer with three-state outputs, fabricated using silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and supports a wide operating temperature from -40°C to 125°C. The device features four non-inverting buffers, each with one bit per element, housed in a 14-TSSOP surface-mount package. Key electrical characteristics include a typical propagation delay of 8 ns at 6V, maximum static current of 4 μA, and symmetrical output impedance with minimum currents of 6 mA for both high and low states.

Feature Summary

• Provides four independent non-inverting buffer channels with three-state control capability
• Ensures high noise immunity through robust input protection circuits against static discharge and transient excess voltage
• Delivers balanced propagation delays with symmetrical output impedance for consistent signal integrity
• Compatible with standard 74 series pinouts and functions while offering improved speed and power efficiency

Applications

• Bus-oriented memory and register drives
• Clock distribution networks requiring controlled output impedance
• Industrial systems operating in harsh environments with wide temperature ranges
• Automotive electronics certified under AEC-Q100 standards

Procurement Notes

Verify the specific suffix YTTR corresponds to the TSSOP-14 package and reel quantity when ordering. Confirm that the AEC-Q100 automotive qualification meets your system's reliability requirements. Ensure the 2V to 6V supply voltage aligns with your target logic levels. Check for RoHS3 compliance if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a quad buffer with three-state functionality is required for bus applications. It is suitable for designs needing wide voltage operation between 2V and 6V. Consider its AEC-Q100 certification for automotive use cases. The TSSOP-14 package offers a compact solution for space-constrained printed circuit board layouts.

Part Context

This part belongs to the STMicroelectronics 74HC series of high-speed CMOS logic devices. It is functionally compatible with the industry-standard 74HC126 specification. The device utilizes C2MOS technology to achieve low power dissipation while maintaining high noise immunity and fast switching speeds compared to older logic families.

Replacement Considerations

SN74HC126DBR is a documented substitute option from Texas Instruments.