SN74GTLP22034GQLR

Specialty Logic Overview

The SN74GTLP22034GQLR is an 8-bit LVTTL-to-GTLP adjustable-edge-rate registered transceiver in a 48-pin TVSOP package. It provides true bidirectional signal-level translation between cards operating at LVTTL logic levels and backplanes using GTLP signal levels. The device features split LVTTL ports for control and diagnostics, high-drive outputs of 100 mA, and supports transparent, latched, and flip-flop data transfer modes.

Specialty Logic Feature Summary

• Provides true bidirectional signal-level translation between LVTTL logic levels and GTLP signal levels.
• Features split LVTTL input and output pins to provide a feedback path for control and diagnostics monitoring.
• Includes TI-OPC circuitry to limit overshoot on unevenly loaded backplanes and OEC circuitry to improve signal integrity.
• Supports live insertion through Ioff, power-up 3-state, and BIAS VCC circuitry.

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
• Live-insertion systems utilizing precharge and isolation capabilities

Specialty Logic Procurement Notes

Verify the specific GQL suffix indicates the VFBGA package variant rather than the standard DGVR TVSOP version. Confirm that the component meets RoHS3 compliance standards as specified in the datasheet. Ensure the design accommodates the required VTT and VREF voltage levels for proper GTLP operation.

Specialty Logic Selection Notes

Select this component when a high-drive 8-bit transceiver with adjustable edge rates is required for GTLP backplanes. The split port architecture is essential for designs needing separate feedback paths for diagnostics. Verify compatibility with the target system's clock frequencies and propagation delay requirements.

Specialty Logic Part Context

This device belongs to the Widebus family from Texas Instruments. It offers functionality similar to the SN74FB2033 but utilizes true GTLP logic. The GQL suffix specifically denotes the Microstar Junior package configuration used in this part number.

Specialty Logic Replacement Considerations

The SN74GTLP22034DGVR serves as a direct functional replacement within the same family, differing only by the TVSOP package instead of the VFBGA configuration.

Specialty Logic FAQ

How does the ERC input affect performance?

The Variable Edge-Rate Control (ERC) input allows designers to adjust the B-port output rise and fall times. Setting ERC high selects slow edge rates, while low selects fast rates, optimizing data-transfer rate and signal integrity for distributed loads.

What is the purpose of the split LVTTL port?

The split LVTTL port consists of separate AI (input) and AO (output) pins. This architecture provides a dedicated feedback path for control and diagnostics monitoring during data transmission.