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UCC5638FQPTR Texas Instruments
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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• Auto Selection Single Ended (SE) orLow Voltage Differential (LVD)Termination
• Meets SCSI-1, SCSI-2, Ultra2 (SPI-2LVD SCSI), Ultra3, Ultra160 (SPI-3)and Ultra320 (SPI-4) Standards
• 2.7V to 5.25V Operation
• Differential Failsafe Bias
• Thermal packaging for low junctiontemperature and better MTBF.
The UCC5638 Multimode SCSI Terminator provides a smooth transitioninto the LVD SCSI Parallel Interface (SPI-2, SPI-3, SPI-4). It automaticallysenses the bus, via DIFFB, and switches the termination to either singleended (SE) or low voltage differential (LVD) SCSI, dependent on whichtype of devices are connected to the bus. The UCC5638 can not be usedon a HVD, EIA485, differential SCSI bus. If the UCC5638 detects a HVDSCSI device, it switches to a high impedance state.The Multimode terminator contains all functions required to terminate andauto detect and switch modes for SPI-2, SPI-3 and SPI-4 bus architectures.Single Ended and Differentialimpedances and currents are trimmed formaximum effectiveness. Fail Safe biasing is provided to insure signal integ-rity. Device/Bus type detection circuitry is integrated into the terminator toprovide automatic switching of termination between single ended and LVDSCSI and a high impedance for HVD SCSI. The multimode function pro-vides all the performance analog functions necessary to implement SPI-2termination in a single monolithic device.The UCC5638 is offered in a 48 pin LQFP package for a temperature rangeof 0°C to 70°C.
DIFFB: Diff sense filter pin should be connected at a4.7 F capacitor.LINEn–: Signal line active line for single ended or nega-tive line in differential applications for the SCSI bus.DIFFSENS: The SCSI bus Diff Sense line to detect whattypes of devices are connected to the SCSI bus.LINEn+: Ground line for single ended or positive line fordifferential applications for the SCSI bus.DISCNCT: Disconnect pin shuts down the terminatorwhen it is not at the end of the bus. The disconnect pinlow enables the terminator.REG: Regulator bypass pin, must be connected to a4.7 F capacitor.TRMPWR: VIN 2.7V to 5.25V supply, bypass near theterminator with a 4.7 F capacitor to ground.3
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TYPE | DESCRIPTION | Select all |
---|---|---|
Package | Tape & Reel (TR) | |
Series | - | |
Supplier Device Package | 48-LQFP (7x7) | |
Package / Case | 48-LQFP | |
Mounting Type | Surface Mount | |
Operating Temperature | 0°C ~ 70°C | |
Voltage - Supply | 2.7V ~ 5.25V | |
Number of Terminations | 15 | |
Type | SCSI, LVD, SE | |
Product Status | Active |
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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