SN74GTLP2034DGGR

Specialty Logic Overview

The SN74GTLP2034DGGR is an 8-bit LVTTL-to-GTLP adjustable-edge-rate registered transceiver with a split LVTTL port and feedback path. It operates at VCC = 3.3V (3.15–3.45V) and supports GTL (VTT=1.2V, VREF=0.8V) or GTLP (VTT=1.5V, VREF=1V). The device provides high-drive GTLP outputs (100mA IOL) and standard LVTTL outputs (±24mA). It features TI-OPC circuitry to limit ringing on unevenly loaded backplanes and OEC circuitry to improve signal integrity. The ERC input adjusts B-port rise/fall times for optimal data-transfer rates.

Specialty Logic Feature Summary

• Provides true bidirectional logic translation between LVTTL logic levels and GTLP signal levels.
• Features a split LVTTL port that separates AI inputs from AO outputs to provide a dedicated feedback path for control and diagnostics monitoring.
• Includes TI-OPC circuitry to actively limit overshoot caused by improperly terminated backplanes or empty slots during low-to-high transitions.
• Supports live insertion through Ioff, power-up 3-state, and BIAS VCC circuitry to prevent current backflow and maintain active data integrity.

Specialty Logic Applications

• High-speed interface between cards operating at LVTTL logic levels and backplanes operating at GTLP signal levels
• Distributed load backplane switching applications requiring incident-wave switching capabilities
• Live-insertion systems utilizing precharge and isolation features

Specialty Logic Procurement Notes

Verify the specific ordering suffix 'DGGR' corresponds to the TSSOP package and tape-and-reel packing configuration. Confirm the component meets RoHS compliance standards as indicated in the manufacturer's documentation. Ensure the design accommodates the recommended operating conditions for VCC and termination voltages to guarantee proper functionality.

Specialty Logic Selection Notes

Select this component when interfacing LVTTL logic with GTLP backplanes requiring registered data transfer. The split port architecture is essential for designs needing separate feedback paths for diagnostics. Consider the adjustable edge-rate control if optimizing signal integrity for varying backplane loads is required.

Specialty Logic Part Context

This device belongs to the Widebus family of Texas Instruments. It offers functionality similar to the SN74FB2033 but implements true GTLP logic rather than open-collector implementations. It is designed to minimize bus-settling time and support high-frequency operation up to 175 MHz clock frequencies.

Specialty Logic Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.