74LVT126D,112

Overview

The Nexperia USA Inc. 74LVT126D,112 is a quad buffer and line driver featuring three-state outputs controlled by dedicated output enable inputs (nOE). It operates within a supply voltage range of 2.7 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. The device utilizes BiCMOS technology for high-speed performance and provides an output capability of +64 mA in the low state and -32 mA in the high state. It includes bus-hold data inputs to eliminate external pull-up resistors and features IOFF circuitry for partial power-down applications. The component is housed in a 14-lead SO plastic small outline package (SOT108-1) and is specified for operation across an ambient temperature range of -40 °C to +85 °C.

Feature Summary

• Quad bus interface with three-state buffers controlled by output enable inputs
• Overvoltage tolerant inputs allowing direct interface with systems at 5 V supply
• Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs
• IOFF circuitry provides partial power-down mode operation preventing damaging backflow current

Applications

• Partial power down applications requiring protection against backflow current
• Live insertion and extraction permitted bus interfaces
• Direct interface with TTL levels in mixed voltage environments

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the tube packaging format as indicated in distributor records. Confirm that the SO14 package variant matches the SOT108-1 mechanical drawing requirements for your PCB layout. Ensure design compliance with the specified operating temperature range of -40 °C to +85 °C. Check for any recent Product Change Notifications regarding marking or material updates before finalizing procurement.

Selection Notes

Select this component when a quad buffer with three-state outputs is required for 3.3 V logic systems interfacing with 5 V buses. The inclusion of bus-hold inputs simplifies design by removing the need for external pull-up resistors on unused lines. Consider the BiCMOS technology for applications demanding high-speed propagation delays and robust output drive capabilities. Verify that the 14-lead SO package dimensions fit the available board space and soldering constraints.

Part Context

The 74LVT126 belongs to the LVT logic family, designed specifically for 3.3 V applications while maintaining compatibility with 5 V systems. This series emphasizes high speed and low power consumption through BiCMOS technology. The quad buffer configuration allows for efficient signal buffering and line driving in complex digital circuits. It serves as a standard solution for level shifting and bus isolation in mixed-voltage designs.

Replacement Considerations

Public confirmed substitute part numbers include 74LVT126PW and 74LVT126BQ from Nexperia, which offer alternative package options such as TSSOP14 and DHVQFN14 respectively.