SN74GTLP21395PWR

Translators, Level Shifters Overview

The SN74GTLP21395PWR is a dual 1-bit LVTTL-to-GTLP bus transceiver in a 20-pin TSSOP package. It operates at VCC of 3.15V to 3.45V and supports temperatures from -40°C to +85°C. The device provides bidirectional translation between LVTTL logic levels and GTLP signal levels, featuring adjustable edge-rate control (ERC) for optimized data transfer. It includes split LVTTL ports with feedback paths for diagnostics and selectable polarity outputs.

Translators, Level Shifters Feature Summary

• Bidirectional interface translating between LVTTL logic levels and GTLP signal levels
• Adjustable edge-rate control input for optimizing rise and fall times
• Split LVTTL port providing a dedicated feedback path for control and diagnostics
• Supports live insertion via Ioff, power-up 3-state, and BIAS VCC circuitry

Translators, Level Shifters Applications

• Primary and secondary clock distribution in backplane systems
• High-speed interface between cards operating at LVTTL levels and GTLP backplanes
• Integration with Texas Instruments 3.3-V 1394 backplane physical-layer controllers

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the tape-and-reel packaging format required for automated assembly. Confirm that the 20-TSSOP footprint matches the target PCB design guidelines. Ensure the supply voltage range aligns with the system's 3.3V nominal rail specifications.

Translators, Level Shifters Selection Notes

Select this component when separate enable controls for the GTLP bus and the LVTTL feedback output are necessary. The adjustable edge-rate feature is critical for managing signal integrity on heavily loaded backplanes. Consider the split-port architecture if diagnostic monitoring of transmitted data is required alongside standard level translation.

Translators, Level Shifters Part Context

This device belongs to the SN74GTLP series, designed specifically for high-speed parallel backplane applications. It serves as a bridge between standard LVTTL logic and the reduced-swing GTLP signaling standard, enabling faster data rates than standard TTL while maintaining compatibility with existing logic families.

Translators, Level Shifters Replacement Considerations

SN74GTLP21395DW

Translators, Level Shifters FAQ

How does the ERC input affect performance?

The Edge-Rate Control (ERC) input allows the designer to select between fast and slow output transition times. Adjusting this input optimizes the data-transfer rate and signal integrity based on the specific load conditions of the backplane.

What is the function of the split LVTTL port?

The split LVTTL port consists of separate A input and Y output pins. This configuration provides a feedback path that allows for control and diagnostics monitoring of the data being transferred to the GTLP bus.