UBT Transceiver Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Mode
TI-OPC Circuitry Limits Ringing on Unevenly Loaded Backplanes
OEC Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference
Bidirectional Interface Between GTLP Signal Levels and LVTTL Logic Levels
Partitioned as Two 8-Bit Transceivers With Individual Latch Timing and Output Control, but With a Common Clock
LVTTL Interfaces Are 5-V Tolerant
High-Drive GTLP Outputs (100 mA)
LVTTL Outputs (\x9624 mA/24 mA)
Variable Edge-Rate Control (ERC) Input Selects GTLP Rise and Fall Times for Optimal Data-Transfer Rate and Signal Integrity in Distributed Loads
Ioff, Power-Up 3-State, and BIAS VCC Support Live Insertion
Bus Hold on A-Port Data Inputs
Distributed V CC and GND Pins Minimize High-Speed Switching Noise
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
2000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
OEC, TI, TI-OPC, UBT, and Widebus are trademarks of Texas Instruments.
Description
The SN74GTLPH1655 is a high-drive, 16-bit UBT transceiver that provides LVTTL-to-GTLP and GTLP-to-LVTTL signal-level translation. It is partitioned as two 8-bit transceivers and allows for transparent, latched, and clocked modes of data transfer. The device provides a high-speed interface between cards operating at LVTTL logic levels and a backplane operating at GTLP signal levels. High-speed (about three times faster than standard LVTTL or TTL) backplane operation is a direct result of GTLP's reduced output swing (<1 V), reduced input threshold levels, improved differential input, OEC circuitry, and TI-OPc circuitry. Improved GTLP OEC and TI-OPC circuits minimize bus-settling time and have been designed and tested using several backplane models.
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Inventory
Reported Distributor Inventory as of 11:02 AM GMT, 22 Nov 2009
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
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