SN74GTLPH16916GR

Overview

The SN74GTLPH16916GR is a 17-bit Universal Bus Transceiver (UBT) manufactured by Texas Instruments, designed for LVTTL-to-GTLP and GTLP-to-LVTTL signal-level translation. It operates within a supply voltage range of 3.15 V to 3.45 V and supports data transfer in transparent, latched, clocked, and clock-enabled modes. The device features buffered clock outputs (CLKOUT) and inputs (CLKIN), medium-drive GTLP outputs with 50 mA capability, and LVTTL outputs rated at ±24 mA. Packaged in a TSSOP-56 (DGG) format, it functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Combines D-type latches and flip-flops to support transparent, latched, clocked, and clock-enabled data transfer modes.
• Integrates TI-OPC circuitry to actively limit overshoot on unevenly loaded backplanes, improving signal integrity.
• Includes OEC circuitry to optimize rise and fall times, reducing electromagnetic interference and bus-settling time.
• Supports live insertion through Ioff, power-up 3-state, and BIAS VCC precharge capabilities.

Applications

• High-speed interface between cards operating at LVTTL logic levels and backplanes using GTLP signal levels.
• Universal bus transceiver replacement for standard logic families such as '245, '645, '373, and '646.
• Systems requiring buffered clock distribution with GTLP signal level conversion.

Procurement Notes

Verify the specific ordering suffix GR corresponds to the TSSOP-56 package and tape-and-reel packaging configuration. Confirm that the design utilizes the recommended BIAS VCC connection sequence to ensure proper precharge functionality during live insertion. Ensure VREF and VTT voltages are set correctly for GTLP operation to maintain optimal noise margins and minimize current drain.

Selection Notes

Select this component when a 17-bit width is required for LVTTL-to-GTLP translation with flexible mode control. It is suitable for designs needing buffered clock outputs and active overshoot protection. Consider the medium-drive output strength for heavily loaded backplanes with low equivalent impedance. Verify compatibility with existing system timing requirements regarding setup and hold times.

Part Context

This device belongs to the SN74GTLPH family of universal bus transceivers from Texas Instruments. It is part of the Widebus family, offering high-density integration for complex digital systems. The UBT architecture allows it to replace multiple discrete logic functions, simplifying board layout and reducing component count in high-performance computing and communication applications.

Replacement Considerations

SN74GTLPH16916VR