SN74LVTH16500DGGR

Overview

The SN74LVTH16500DGGR is an 18-bit universal bus transceiver from the Widebus family, designed for low-voltage 3.3-V VCC operation with TTL interface capability to 5-V systems. It supports mixed-mode signal operation and unregulated battery operation down to 2.7 V. The device features a flow-through architecture, active bus-hold circuitry, and distributed VCC/GND pins to minimize switching noise. It includes Ioff and power-up 3-state support for hot insertion. Operating temperature ranges from -40°C to +85°C.

Feature Summary

• Supports mixed-mode signal operation with 5-V input/output voltages while operating at 3.3-V VCC
• Integrates D-type latches and flip-flops for transparent, latched, or clocked data modes
• Provides active bus-hold circuitry on data inputs to eliminate external pullup/pulldown resistors
• Includes Ioff and power-up 3-state circuitry to prevent damaging current backflow during hot insertion

Applications

• Mixed-mode signal translation between 5-V and 3.3-V system environments
• Hot-insertion applications requiring high-impedance state during power transitions
• Universal bus transceivers in low-voltage memory and peripheral interfaces

Procurement Notes

Verify the specific ordering suffix matches the required package type (TSSOP-56) and lead finish (NIPDAU). Confirm RoHS compliance status and moisture sensitivity level (Level-1) requirements for your assembly process. Ensure the part number corresponds to the correct revision and that all unused control inputs are properly terminated in the final design.

Selection Notes

Select this component when 18-bit bidirectional data transfer is required between voltage domains. The LVTH series offers higher drive strength compared to standard LVC devices. Consider the flow-through pinout for simplified PCB layout. Verify that the 2.7-V minimum supply voltage aligns with your system's power rail stability under load.

Part Context

This device belongs to Texas Instruments' Widebus family, which combines transceivers with storage elements. It is part of the SN74LVTH16xx series, distinct from the non-latching SN74LVTH16501. The DGGR suffix indicates a tape-and-reel TSSOP-56 package suitable for surface-mount assembly.

Replacement Considerations

SN74LVTH16500DL is the SSOP-56 tube variant of the same logical function. SN74LVTH16500GQLR is the military-grade VFBGA variant. Direct pin-compatible replacements within the LVTH family should be verified against specific timing and drive current requirements.