SN74LVCH16540ADLR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVCH16540ADLR is a 16-bit buffer/driver with 3-state outputs from the Texas Instruments Widebus family. It operates from 1.65 V to 3.6 V and features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation on all ports. The device provides a maximum propagation delay of 3.7 ns at 3.3 V and includes active bus-hold circuitry on data inputs. It supports partial-power-down mode via Ioff circuitry and offers ESD protection exceeding 2000-V human-body model and 1000-V charged-device model ratings.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation allowing 5-V input/output voltage with 3.3-V VCC
• Active bus-hold circuitry eliminates the need for external pullup/pulldown resistors
• Ioff circuitry supports partial-power-down mode by disabling outputs to prevent backflow
• Outputs are controlled by a 2-input AND gate with active-low OE inputs

Buffers, Drivers, Receivers, Transceivers Applications

• High-performance bus interface for wide data paths
• Translators in mixed 3.3-V/5-V system environments
• Partial-power-down applications requiring output isolation during power-off states

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the tape-and-reel packaging format when sourcing components. Confirm the manufacturer part number matches the exact logic family specifications required for your design. Ensure compatibility with the recommended operating conditions regarding supply voltage ranges and temperature limits before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring 16-bit buffering with high-speed performance and mixed-voltage compatibility. The device is suitable for systems needing 3-state control with active-low enable inputs. Consider the SSOP package dimensions and thermal characteristics if space constraints or heat dissipation are critical factors in the printed circuit board layout.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments Widebus family, designed specifically for wide data path interfaces. It is manufactured using advanced CMOS technology to ensure low power consumption and high noise immunity. The SN74LVCH16540A variant represents an updated version within the LVCH series, offering improved electrical characteristics compared to earlier generations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct substitutes such as the SN74LVCH16540ADL (tube) or SN74LVCH16540ADGGR (TSSOP). Verify pinout compatibility and electrical parameters match the original requirements before replacing the component in existing designs.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused or undriven inputs?

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the function of the Ioff circuitry?

The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down, supporting partial-power-down applications.

Can this device operate with 5-V signals while powered by 3.3 V?

Yes, the inputs accept voltages up to 5.5 V, allowing the device to support mixed-mode signal operation on all ports with 5-V input/output voltage and 3.3-V VCC.