74LVC2G126DP,125

Overview

The Nexperia 74LVC2G126DP,125 is a dual bus buffer and line driver featuring three-state outputs controlled by active-high output enable inputs (nOE). It operates within a supply voltage range of 1.65 V to 5.5 V and accepts overvoltage tolerant inputs up to 5.5 V. The device incorporates Schmitt-trigger action for noise immunity and includes IOFF circuitry to prevent backflow current during partial power-down states. Packaged in an 8-lead TSSOP (SOT505-2) plastic thin shrink small outline package, it supports an ambient temperature range from -40 °C to +125 °C.

Feature Summary

• Provides non-inverting buffering with three-state outputs controlled by dedicated enable pins.
• Features Schmitt-trigger inputs to ensure tolerance against slow input rise and fall times.
• Includes integrated IOFF circuitry to disable outputs and prevent damaging backflow currents when powered down.
• Supports direct interfacing with TTL levels and mixed 3.3 V and 5 V environments.

Applications

• Mixed voltage translation between 3.3 V and 5 V logic domains
• Partial power-down mode operation requiring backflow current prevention
• Bus buffering applications requiring high noise immunity

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component for designs requiring dual-channel buffering with three-state control and robust noise immunity via Schmitt triggers. Ensure the application environment stays within the specified 1.65 V to 5.5 V supply range and -40 °C to +125 °C temperature limits. Confirm that the TSSOP8 package dimensions align with the PCB footprint requirements.

Part Context

This part belongs to the 74LVC family of low-voltage CMOS logic devices manufactured by Nexperia. It is functionally equivalent to other variants in the 74LVC2G126 series, differing primarily in packaging options such as VSSOP or XSON. The DP suffix specifically denotes the TSSOP8 package configuration.

Replacement Considerations

Direct replacements include other 74LVC2G126 variants with different packages, such as 74LVC2G126DC (VSSOP8), 74LVC2G126GT (XSON8), or 74LVC2G126GF (XSON8). Verify pin compatibility and thermal characteristics when substituting packages.

FAQ

How does the IOFF circuitry function?

The IOFF circuitry automatically disables the outputs when the device is powered down (VCC = 0 V), preventing potentially damaging backflow current through the device from live input lines.

What is the input type characteristic?

All inputs feature Schmitt-trigger action, which makes the circuit tolerant of slower input rise and fall times and provides high noise immunity.