SS8219G Datasheet | Silicon Standard

Ultra320 Multi-mode LVD/SE SCSI Terminator PRODUCT SUMMARY SPI mode auto-detection/switching. Pin/pin patible with popular industry standard parts DS2118/9 and UCC5672 DESCRIPTION The SS8 219 G m ulti-mode LVD/SE SCSI terminator provides a smooth transition between modes of the SCSI Parallel Interface. It automatically senses the bus via DIFFSENS and switches the termination to either single-ended (SE) or low voltage differential (LVD) SCSI, based on which type of devices are connected to the bus. If the SS8219G detects an HVD SCSI device, it switches to a high impedance state. A 16-bit wide SCSI bus requires three SS8219G for termination. Th is m ulti-mode terminator contains all the functions to terminate, auto detect and switch modes for SCSI Parallel Interface (SPI) bus architectures. For SE termination, one regulator and nine precision 110Ω resistors are used. For LVD termination, the SS8219G integrates 18 regulated supplies with nine precision resistor strings. Features Auto-selectable single-ended or LVD termination Meets SCSI-1, SCSI-2, SCSI-3 SPI Ultra (Fast-20), Ultra 2 (SPI-2 LVD), Ultra160 (SPI-3 LVD) and Ultra320 (SPI-4 LVD) standards Supports active negation Channel capacitance of 3p F Operation from 2.9V to 5.5V Thermal protection Hot-swap patible Tolerance of 5% on termination resistance Available in 28 pin TSSOP or 36 pin SSOP Pb-free, Ro HS pliant. APPLICATIONS High performance data storage systems in servers, workstations, high-end and industrial PCs, and RAID disk arrays. PIN CONFIGURATION VREF NC NC R1+ VREF R1+ R1R2+ R2NC/ HS GND R3+ R3R4+ R4R5+ 1 2 3 4 5 6 7 8 9 10 11 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TPWR TPWR R9R9+ R8R8+ NC/ HS GND R7R7+ R6R6+ DIFFB DIFFSENSE M/S R1R2+ R2HS/GND HS/GND HS/GND R3+ R3R4+ R4R5+ R5DISCNCT GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 TPWR HVD LVD SE R9R9+ R8R8+ HS/GND HS/GND HS/GND R7R7+ R6R6+ DIFFB DIFFSENSE...