SN74LVT16500DLR

Overview

The SN74LVT16500DLR is an 18-bit universal bus transceiver utilizing Advanced BiCMOS (ABT) technology for 3.3-V operation. It supports mixed-mode signal environments with 5-V tolerant inputs and outputs. The device integrates D-type latches and flip-flops, enabling transparent, latched, or clocked data modes via OE, LE, and CLK controls. It features 3-state outputs, active bus-hold circuitry on data inputs to eliminate external resistors, and a flow-through architecture optimized for PCB layout.

Feature Summary

• Combines D-type latches and flip-flops for versatile transparent, latched, or clocked operation
• Active bus-hold circuitry maintains valid logic levels on unused or floating data inputs
• Distributed VCC and GND pin configuration minimizes high-speed switching noise
• Supports live insertion into systems without requiring power sequencing

Applications

• High-density memory buffer applications
• Clock drivers and buffered clocks
• Bus-oriented architectures requiring mixed-voltage interfacing

Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the SSOP-56 package and tape-and-reel quantity of 1000 units. Confirm that the component status is acceptable for the intended design lifecycle, as Texas Instruments may designate this part as NRND or obsolete in current catalogs. Ensure the application environment remains within the specified -40°C to 85°C operating temperature range.

Selection Notes

Select this component when an 18-bit wide bus interface is required with mixed 3.3-V and 5-V voltage domains. The ABT technology provides low static power dissipation compared to standard CMOS. Consider the flow-through pinout if minimizing trace length between A and B ports is critical for signal integrity in high-speed designs.

Part Context

This device belongs to the Widebus family of universal bus transceivers from Texas Instruments. It is part of the SNx4LVT16500 series, which includes variants like the SN54LVT16500 for military temperature ranges. The DL suffix indicates a plastic shrink small-outline package, distinct from the thin shrink variant (DGG).

Replacement Considerations

Direct functional equivalents include the SN74LVT16500DGGR (Thin Shrink Small-Outline Package). Verify pin compatibility and package dimensions before substitution.