UCC5638是TI公司的一款SCSI总线终端产品，UCC5638是15 线路 2.7-5V 多模端接器，用于 SCSI 至 Ultra320 SCSI，本页介绍了UCC5638的产品说明、应用、特性等，并给出了与UCC5638相关的TI元器件型号供参考。
UCC5638 - 15 线路 2.7-5V 多模端接器，用于 SCSI 至 Ultra320 SCSI - SCSI总线终端 - SCSI终端、收发器 - TI公司（Texas Instruments，德州仪器）
The UCC5638 Multimode SCSI Terminator provides a smooth transition into the LVD SCSI Parallel Interface (SPI-2, SPI-3, SPI-4). It automatically senses the bus, via DIFFB, and switches the termination to either single ended (SE) or low voltage differential (LVD) SCSI, dependent on which type of devices are connected to the bus. The UCC5638 can not be used on a HVD, EIA485, differential SCSI bus. If the UCC5638 detects a HVD SCSI device, it switches to a high impedance state.
The Multimode terminator contains all functions required to terminate and auto detect and switch modes for SPI-2, SPI-3 and SPI-4 bus architectures. Single Ended and Differential impedances and currents are trimmed for maximum effectiveness. Fail Safe biasing is provided to insure signal integrity. Device/Bus type detection circuitry is integrated into the terminator to provide automatic switching of termination between single ended and LVD SCSI and a high impedance for HVD SCSI. The multimode function provides all the performance analog functions necessary to implement SPI-2 termination in a single monolithic device.
The UCC5638 is offered in a 48 pin LQFP package for a temperature range of 0°C to 70°C.
- Auto Selection Single Ended (SE) or Low Voltage Differential (LVD) Termination
- Meets SCSI-1, SCSI-2, Ultra2 (SPI-2 LVD SCSI), Ultra3, Ultra160 (SPI-3) and Ultra320 (SPI-4) Standards
- 2.7V to 5.25V Operation
- Differential Failsafe Bias
- Thermal packaging for low junction temperature and better MTBF.
