SN74GTLP1395GQNR

Translators, Level Shifters Overview

The SN74GTLP1395GQNR is a Texas Instruments mixed-signal level translator featuring two independent 1-bit bidirectional bus transceivers. It facilitates signal-level translation between LVTTL logic levels and GTLP/GTL backplane standards. The device incorporates split LVTTL ports to provide dedicated feedback paths for control and diagnostics monitoring. It supports selectable output polarity, adjustable edge-rate control (ERC) for optimizing data-transfer rates, and high-drive outputs capable of driving heavily loaded backplanes with low equivalent impedance.

Translators, Level Shifters Feature Summary

• Bidirectional interface providing LVTTL-to-GTLP and GTLP-to-LVTTL signal-level translation
• Split LVTTL port architecture enabling separate input and output pins for feedback path monitoring
• Adjustable edge-rate control (ERC) input to optimize rise and fall times for signal integrity
• Supports live insertion via Ioff, power-up 3-state, and BIAS VCC circuitry

Translators, Level Shifters Applications

• Primary and secondary clock distribution in parallel backplane systems
• IEEE 1394 backplane serial bus physical layer interfaces
• ATM read and write clock transmission in multislot parallel backplanes
• Distributed load backplane applications requiring incident-wave switching

Translators, Level Shifters Procurement Notes

Verify the specific GQN package variant against the target PCB footprint and thermal requirements. Confirm that the design utilizes the recommended BIAS VCC precharge sequence to ensure proper live-insertion functionality. Ensure supply voltages remain within the specified 3.15 V to 3.45 V range for reliable operation.

Translators, Level Shifters Selection Notes

Select this component when a bidirectional translator with distinct feedback monitoring capabilities is required. The inclusion of adjustable edge-rate control makes it suitable for systems where signal integrity must be tuned to specific backplane loading conditions. It is specifically designed to complement Texas Instruments 1394 backplane physical-layer controllers.

Translators, Level Shifters Part Context

This device belongs to the SN74GTLP family, which targets telecommunications and data communications backplanes. The GTLP standard is a Texas Instruments derivative of the Gunning Transceiver Logic (GTL) JEDEC standard. The family emphasizes improved signal integrity and reduced electromagnetic interference through specialized OEC and TI-OPC circuitry.

Translators, Level Shifters Replacement Considerations

SN74GTLP1395DW

Translators, Level Shifters FAQ

How does the split LVTTL port benefit system design?

The split LVTTL port provides separate A input and Y output pins, creating a dedicated feedback path that allows for control and diagnostics monitoring without interfering with the main data transfer on the B port.

What is the function of the ERC input pin?

The Edge-Rate Control (ERC) input adjusts the B-port output rise and fall times. Setting ERC high selects slow edge rates, while setting it low selects fast edge rates, allowing designers to optimize performance for distributed loads.