74GTLPH1645DGGRG4

Overview

The SN74GTLPH1645DGGRG4 is a 16-bit LVTTL-to-GTLP adjustable-edge-rate bus transceiver from the Texas Instruments Widebus family. It operates within a supply voltage range of 3.15 V to 3.45 V and supports bidirectional data transfer across two independent circuits. The device features a propagation delay of 9.4 ns and utilizes TSSOP-56 packaging for surface-mount installation. Designed for mixed-signal applications, it provides three-state outputs and functions effectively within an operating temperature range of -40°C to +85°C.

Feature Summary

• Adjustable edge rate control limits ringing on unevenly loaded backplanes via TI-OPC circuitry
• Bidirectional translation between LVTTL and GTLP logic levels
• Three-state outputs enable safe bus sharing in parallel configurations

Applications

• LVTTL to GTLP voltage level translation
• High-speed bidirectional bus architectures
• Unevenly loaded backplane systems

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free construction as per manufacturer specifications. Confirm the package type matches the required TSSOP-56 footprint for PCB layout compatibility. Ensure the operating voltage requirements align with the 3.15 V to 3.45 V specification before integration into the target system design.

Selection Notes

Select this component when interfacing LVTTL sources with GTLP destinations requiring controlled signal integrity. The adjustable edge rate feature addresses noise concerns in complex backplane environments. Verify that the power supply constraints fit within the specified 3.15 V to 3.45 V window to ensure proper functionality and avoid electrical overstress during operation.

Part Context

This part belongs to the SN74GTLPH1645 series, designed for high-performance data translation. It is part of the Widebus family, emphasizing robust performance in demanding digital interfaces. The DGGRG4 designation specifies the TSSOP-56 package variant with environmental compliance attributes defined by the manufacturer's standard coding conventions.

Replacement Considerations

Check for direct substitutes within the same Widebus family or compatible GTLP translators. Verify pinout compatibility and electrical characteristics match the original design requirements. Consult official replacement lists for end-of-life notifications or recommended upgrades from the manufacturer.