DS2119M
FEATURES
Fully pliant with SCSI SPI-2, SPI-3, SPI-4, Ultra160, and Ultra320 Provides multimode low-voltage differential/single-ended (LVD/SE) termination for nine signal-line pairs Auto-selection of LVD or SE termination 5% tolerance on SE and LVD termination resistance Low power-down capacitance of 3p F Onboard thermal-shutdown circuitry SCSI-bus hot-plug patible Fully supports actively negated SE SCSI signals
PIN ASSIGNMENT
VREF RIP RIN R2P R2N HS GND R3P R3N R4P R4N R5P R5N ISO GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 TPWR TPWR R9N R9P R8N R8P HS GND R7N R7P R6N R6P DIFF_CAP DIFFSENSE MSTR/SLV
DS2119ME 28-Pin TSSOP
DESCRIPTION
The DS2119M Ultra3 LVD/SE SCSI Terminator is both a low-voltage differential (LVD) and singleended (SE) terminator. The multimode operation enables the designer to implement LVD in current products while allowing the end-user SE-backward patibility with legacy devices. If the device is connected in an LVD-only bus, the...
