SN74GTLP1395DWE4

Translators, Level Shifters Overview

The SN74GTLP1395DWE4 is a dual 1-bit LVTTL-to-GTLP bus transceiver in a 20-pin SOIC package. It operates at VCC and BIAS VCC of 3.15 V to 3.45 V, with a recommended nominal voltage of 3.3 V. The device supports GTL (VTT = 1.2 V) and GTLP (VTT = 1.5 V) termination voltages. Propagation delays range from 1.6 ns to 9.7 ns depending on the edge rate setting. It features adjustable edge-rate control for optimized signal integrity.

Translators, Level Shifters Feature Summary

• Provides bidirectional translation between LVTTL logic levels and GTLP backplane signal levels.
• Features split LVTTL ports that allow separate input and output pins for diagnostics monitoring.
• Includes TI-OPC circuitry to actively limit overshoot and improve signal integrity on unevenly loaded backplanes.
• Supports live insertion through Ioff power-up 3-state and BIAS VCC precharge capabilities.

Translators, Level Shifters Applications

• Primary and secondary clock distribution in parallel backplane systems
• High-speed interface for IEEE 1394 backplane physical-layer controllers
• ATM read and write clock transmission in multislot applications

Translators, Level Shifters Procurement Notes

Verify the E4 suffix indicates lead-free compliance and RoHS adherence. Confirm the DW package designation matches the required 20-pin SOIC footprint. Ensure the operating temperature range aligns with industrial specifications. Cross-reference the datasheet revision SCES349C for accurate electrical parameters.

Translators, Level Shifters Selection Notes

Select this component when interfacing 3.3-V LVTTL devices with GTLP backplanes requiring high drive strength. The split port architecture is essential for diagnostic feedback paths. Adjustable edge-rate control allows optimization for specific backplane load impedances. Verify compatibility with the target system's termination voltage requirements.

Translators, Level Shifters Part Context

This device belongs to the SN74GTLP family, designed for high-speed data communication. It serves as a bridge between standard logic levels and specialized backplane signaling standards. The inclusion of OEC and TI-OPC circuitry distinguishes it from standard level shifters by addressing signal integrity challenges inherent in distributed loads.

Translators, Level Shifters Replacement Considerations

SN74GTLP1395DW: Standard tube packaging equivalent.

Translators, Level Shifters FAQ

How does the ERC input affect performance?

The Edge-Rate Control (ERC) input adjusts the rise and fall times of the B-port outputs. A high logic level selects slow edge rates, while a low level selects fast edge rates, allowing designers to optimize data-transfer rates and signal integrity.

What is the function of the BIAS VCC pin?

The BIAS VCC pin precharges and preconditions the B-port input/output connections. This feature prevents disturbance of active data on the backplane during card insertion or removal, enabling true live-insertion capability.