TC74VHC125FTELM

Overview

The TC74VHC125FTELM is a quad bus buffer fabricated with silicon gate C2MOS technology. It operates within a supply voltage range of 2.0 V to 5.5 V and supports an operating temperature from -40°C to 85°C. The device features high-speed operation with typical propagation delays of 3.8 ns at 5 V. It includes power-down protection on all inputs, ensuring compatibility between 5 V and 3 V systems without risk of device destruction due to mismatched voltages.

Feature Summary

• High-speed CMOS logic utilizing silicon gate C2MOS technology for performance comparable to Bipolar Shottky TTL while maintaining low power dissipation.
• Integrated input protection circuitry allows application of 0 to 5.5 V to input pins regardless of the supply voltage level.
• Provides balanced propagation delays between low-to-high and high-to-low transitions.
• Features power-down protection on all inputs to prevent device destruction during supply voltage mismatches.

Applications

• Interfacing 5 V systems to 3 V systems
• Connecting two supply systems such as battery backup circuits

Procurement Notes

Verify that the ordering suffix 'ELM' corresponds to the specific TSSOP-14 package variant documented in the official Toshiba datasheet. Confirm that the component meets the required RoHS compliance standards for your region. Ensure the design accounts for the specified absolute maximum ratings to maintain reliability under expected operating conditions.

Selection Notes

Select this component when a quad bus buffer with true output logic and 3-state control is required. It is suitable for designs needing high noise immunity and wide operating voltage ranges. Consider the TC74VHC126 if active-low enable control is preferred over the active-high control provided by this part.

Part Context

This component belongs to the TC74VHC series of high-speed CMOS digital integrated circuits manufactured by Toshiba Semiconductor and Storage. It is functionally compatible with the 74ALS125/126 series, allowing for direct pin replacement in legacy designs requiring similar performance characteristics.

Replacement Considerations

The TC74VHC126 serves as a functional alternative within the same family, differing only in the polarity of the 3-state control input G. Other generic 74VHC125 equivalents may be considered if package and electrical specifications align.