SN74GTLP1395DGVR

Translators, Level Shifters Overview

The SN74GTLP1395DGVR is a Texas Instruments dual 1-bit LVTTL-to-GTLP bus transceiver in a TVSOP-20 package. It operates at VCC and BIAS VCC of 3.15V to 3.45V, with GTLP termination voltage (VTT) of 1.35V to 1.65V and reference voltage (VREF) of 0.87V to 1.1V. Propagation delays range from 1.5ns to 9.7ns depending on edge rate and direction. The device supports adjustable edge-rate control (ERC), split LVTTL ports for feedback, selectable polarity, and live insertion via Ioff and BIAS VCC circuitry.

Translators, Level Shifters Feature Summary

• Provides bidirectional signal-level translation between LVTTL logic levels and GTLP backplane signal levels.
• Features a split LVTTL port architecture that separates input and output pins to enable a dedicated feedback path for diagnostics and monitoring.
• Includes adjustable edge-rate control (ERC) to optimize rise and fall times for specific distributed load requirements.
• Supports hot-insertion and live-insertion applications through integrated Ioff, power-up 3-state, and BIAS VCC precharge circuitry.

Translators, Level Shifters Applications

• IEEE 1394 backplane serial bus physical layer interfaces
• Primary and secondary clock distribution systems requiring individual output-enable controls
• Multislot parallel backplane applications providing ATM read/write clocks
• System enhancement modules requiring fault tolerance and auxiliary bus access

Translators, Level Shifters Procurement Notes

Verify the DGVR suffix confirms the TVSOP-20 tape-and-reel packaging configuration. Confirm the component meets RoHS compliance standards as specified in the datasheet. Ensure the operating temperature range aligns with industrial specifications (-40°C to +85°C). Validate that the supply voltage requirements match the target system design constraints.

Translators, Level Shifters Selection Notes

Select this component when a high-drive interface is required between cards operating at LVTTL levels and a backplane using GTLP signals. The device is suitable for designs needing separate control over true and complementary data paths. Consider the ERC feature if signal integrity optimization for unevenly loaded backplanes is necessary. Verify compatibility with the specific 1394 PHY controller being utilized.

Translators, Level Shifters Part Context

This part belongs to the SN74GTLP1395 family of bus transceivers manufactured by Texas Instruments. It is designed specifically to work with the TI 3.3-V 1394 backplane physical-layer controller. The device utilizes OEC and TI-OPC circuitry to minimize bus settling time and limit ringing on unevenly loaded backplanes.

Translators, Level Shifters Replacement Considerations

SN74GTLP1395DW (SOIC-20 tube)

Translators, Level Shifters FAQ

How does the split LVTTL port benefit system design?

The split 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 transmission.

What is the function of the ERC input pin?

The Adjustable Edge-Rate Control (ERC) input selects the GTLP rise and fall times. Setting it high results in slow edge rates, while setting it low results in fast edge rates, allowing optimization for data-transfer rate and signal integrity.