SN74LVCH16540ADL

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVCH16540ADL is a 16-bit buffer and driver with 3-state outputs from the Texas Instruments Widebus family. It operates within a supply voltage range of 1.65 V to 3.6 V. The device features inputs that accept voltages up to 5.5 V, enabling mixed-mode signal operation between 5-V and 3.3-V systems. It includes active bus-hold circuitry on data inputs to maintain valid logic states without external resistors. The maximum propagation delay is 3.7 ns at 3.3 V. Latch-up performance exceeds 250 mA per JESD 17 standards.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports partial-power-down mode via Ioff circuitry to prevent damaging current backflow when powered down.
• Enables mixed-mode signal operation allowing 5-V input/output voltage compatibility with 3.3-V VCC.
• Incorporates active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors.

Buffers, Drivers, Receivers, Transceivers Applications

• High-performance bus interface for wide data paths
• Mixed-mode signal translation in 5-V/3.3-V system environments
• Partial-power-down applications requiring output disabling during power-off

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the selected variant matches the required operating temperature range and pin configuration for the target application design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring 16-bit buffering with 3-state control in low-voltage environments. The device supports both 1.65-V and 3.3-V operations, making it suitable for translating signals between different voltage domains. Consider the SSOP-48 package constraints and thermal impedance characteristics when designing the printed circuit board layout.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVCH16540A series, which is part of the Texas Instruments Widebus family. The family is designed for high-performance bus interfaces supporting wide data paths. The DL suffix indicates an SSOP package, while other suffixes like DGG and DGV correspond to TSSOP and TVSOP packages respectively within the same logical family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74LVCH16540ADLR (Reel), SN74LVCH16540ADGGR (TSSOP), and SN74LVCH16540ADGVR (TVSOP). Verify pinout compatibility and package dimensions before substitution.

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 feature?

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