74LVT126DB,118

Overview

The Nexperia 74LVT126DB,118 is a quad buffer and line driver featuring three-state outputs controlled by dedicated output enable inputs. 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 and -32 mA. It includes bus-hold data inputs to eliminate external pull-up resistors and incorporates IOFF circuitry for partial power-down applications. The component is specified for operation from -40 °C to +85 °C.

Feature Summary

• Features three-state buffers with direct interface capability to TTL levels and systems at 5 V supply.
• Includes bus-hold data inputs that eliminate the need for external pull-up resistors to define unused inputs.
• Incorporates IOFF circuitry to disable outputs during partial power-down, preventing damaging backflow current.
• Supports live insertion and extraction without causing bus current loading when outputs are tied to a 5 V bus.

Applications

• Quad bus interface applications
• Partial power-down mode operations
• Live insertion and extraction permitted environments

Procurement Notes

Verify the specific package designation matches the required form factor, as the 74LVT126 family includes SO14, TSSOP14, and DHVQFN14 variants. Confirm the ordering suffix corresponds to the intended packaging configuration. Ensure design compliance with the specified operating temperature range and electrical limits provided in the official product data sheet before finalizing procurement.

Selection Notes

Select this component for designs requiring a 3.3 V quad buffer with high drive strength and overvoltage tolerance. The inclusion of bus-hold inputs simplifies PCB layout by removing the requirement for external pull-up components on unused lines. Consider the BiCMOS technology benefits for applications demanding high speed alongside robust output drive capabilities within the specified voltage constraints.

Part Context

This part belongs to the 74LVT logic family, which is designed for low-voltage (3.3 V) applications. The 74LVT126 specifically functions as a quad buffer with three-state outputs. It is manufactured by Nexperia USA Inc. and is available in multiple package options including SO14, TSSOP14, and DHVQFN14, catering to various surface-mount assembly requirements.

Replacement Considerations

The 74LVT126D is a confirmed substitute part number within the same family offering identical functionality in the SO14 package.