SS7500 Datasheet | Silicon Standard

SS7500 Multi-mode SCSI Terminator Features !" Fully pliant with Ultra160/m SCSI, Ultra2 and Ultra3 standards. !" Auto-selection Multi-Mode SE or LVD termination for 9 signal line pairs. !" 5 V operation !" Built in thermal shutdown circuitry !" Supports Master/Slave input. !" SCSI bus hot-plug patible. !" Supports active-negation drive. VREF NC NC R1P R1N R2P R2N HGND HGND HGND R3P .Data Sheet.net/ PACKAGE PIN OUT 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 R9N R9P R8N R8P HGND HGND HGND R7N R7P R6N R6P DIF_CAP DIFFSEN MST/SLV DESCRIPTION The SS7500 is a multimode SCSI terminator that conforms to the SCSI (SP2) specification which is designed for low voltage differential (LVD) termination. The SS7500 provides backward patibility to the SCSI and SCSI-2 specifications. Multimode function sets up the use of legacy devices on the bus without changing any hardware setting. Automatic selection is made by voltage detection on the diffsense line. If the device is connected to an LVD-only bus, the SS7500 will use LVD termination. If the device is connected in a Single Ended mode, the SS7500 will be connected in a SE termination. The SCSI termination architecture uses high speed elements for the design, therefore providing fast response time. R3N R4P R4N R5P R5N ISO Rev.2.01 6/06/2003 .Silicon Standard. 1 of 5 Datasheet pdf - http://..co.kr/ PIN DESCRIPTION PIN 36 1 2,3 8,9,10 26,27,28 4,6,11 13,15,22 24,29,31 5,7,12 14,16,23 25,30,32 17 18 19 20 21 33 34 35 SYMBOL TPWR VREF NC HGND Rx P Rx N ISO GND MST/SLV DIFFSEN DIF_CAP SE LVD HVD DESCRIPTION Vin 5V supply. Connect to SCSI bus power line. Reference Voltage. Must be decoupled with a 4.7u F as shown in Figure 1. Do not connect any signal to this pin. Heat Sink Ground. Connect to large area PC board ground trace in order to increase power dissipation. Signal Terminator. Line for single ended or...