SN74GTLP817DW

Translators, Level Shifters Overview

The SN74GTLP817DW is a medium-drive fanout driver in a 24-pin SOIC package. It provides bidirectional signal-level translation between LVTTL and GTLP logic levels. The device supports LVTTL-to-GTLP 1-to-2 fanout and GTLP-to-LVTTL 1-to-6 fanout with inverted data polarity. Operating at VCC = 3.3V, it features variable edge-rate control (ERC) for optimizing rise/fall times. Inputs are 5-V tolerant, and the device includes Ioff and power-up 3-state support for hot insertion.

Translators, Level Shifters Feature Summary

• Bidirectional interface translating between LVTTL card signals and GTLP backplane levels
• Variable edge-rate control input adjusts output transition speeds for distributed loads
• Ioff and power-up 3-state circuitry prevents current backflow and driver conflicts during hot insertion

Translators, Level Shifters Applications

• High-speed backplane interfaces requiring GTLP to LVTTL translation
• LVTTL to GTLP signal level conversion systems
• Hot-insertion applications utilizing power-up 3-state support

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Confirm that the required operating temperature range matches the standard industrial rating. Ensure design compatibility with the specified termination voltages and reference voltage requirements for proper signal integrity.

Translators, Level Shifters Selection Notes

Select this component when a single package must handle both LVTTL-to-GTLP and GTLP-to-LVTTL translation. The ERC pin allows optimization of signal integrity for varying backplane load impedances. Verify that the system utilizes the recommended 3.3V supply and appropriate GTLP termination voltages for optimal performance.

Translators, Level Shifters Part Context

This part belongs to the SN74GTLP series of mixed-signal translators manufactured by Texas Instruments. It is designed specifically for high-speed digital interfaces where signal integrity and reduced electromagnetic interference are critical. The device integrates OEC circuitry to minimize bus settling time in heavily loaded environments.

Translators, Level Shifters Replacement Considerations

SN74GTLP817DWR

Translators, Level Shifters FAQ

How does the ERC input affect operation?

The Edge-Rate Control (ERC) input adjusts the B-port output rise and fall times. Connecting ERC to VCC selects slow edge rates, while connecting it to GND selects fast edge rates, allowing optimization for different load conditions.

What is the function of the Ioff circuitry?

The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow through the device when connected to live circuits.