MC74LVX126MG

Overview

The MC74LVX126MG is a quad bus buffer with 5V-tolerant inputs manufactured by onsemi. It operates within a DC supply voltage range of 2.0 V to 3.6 V and supports input voltages up to 5.5 V, enabling interface between 5.0 V and 3.0 V systems. The device features three-state outputs controlled by an OE input set Low for high impedance. Propagation delay is typically 4.4 ns at 3.3 V. It includes power-down protection, balanced propagation delays, and low noise characteristics.

Feature Summary

• Provides five-volt tolerant inputs allowing direct interfacing between 5.0 V and 3.0 V logic systems
• Features three-state outputs controlled by an active-low output enable signal
• Includes power-down protection circuitry on all inputs to prevent current leakage during low-power states

Applications

• Interface buffering between 5.0 V and 3.0 V digital systems
• High-speed data bus driving applications requiring low power dissipation
• Portable battery-powered equipment utilizing low voltage CMOS logic

Procurement Notes

Verify the specific package suffix against the datasheet ordering information to ensure correct physical dimensions and shipping quantities. Confirm that the component meets RoHS compliance requirements if lead-free packaging is mandatory for the assembly process. Check for any recent product change notices regarding manufacturing location or material composition updates.

Selection Notes

Select this component when designing circuits that require level shifting between 5 V and 3.3 V domains without external translation components. Ensure the operating temperature range covers the intended environmental conditions, as the device supports extended industrial temperatures up to 125 °C. Verify that the capacitive load on the bus does not exceed specifications to maintain signal integrity and timing margins.

Part Context

This part belongs to the LVX series of advanced high-speed CMOS logic devices from onsemi. The series is characterized by low power consumption and compatibility with standard logic families. The MC74LVX126 specifically functions as a non-inverting buffer, distinct from inverters or drivers found in other series members like the MC74LVX125.

Replacement Considerations

Direct substitutes include the MC74LVX125M, which offers similar functionality but with inverted logic polarity. Designers must verify pinout compatibility and logical inversion differences before swapping these parts in existing layouts.