HP7501 Datasheet | HiMARK

HP7501 Ultra320 LVD/SE SCSI Terminator Features Fully pliant with Ultra320 (SPI-4), Ultra3/Ultra160 (SPI-3), Ultra2/Fast-40 (SPI-2) and Ultra/Fast-20 Standards. Auto Selection Multi-Mode SE or LVD Termination for 9 signal line pairs. Built-in SPI-4 Mode Change Filter 2.7V to 5.25V Operation Built in Current Limit and Thermal shutdown Protection Circuitry. Support Master/Slave input. SCSI bus hot plug patible. Support active negation drive. 28 and 36 pin package. DESCRIPTION The HP7501 is a multi-mode SCSI terminator that conforms to the SCSI (SPI-4) specification which is designed for the low voltage differential (LVD) termination. The HP7501 provides backward c o m pa t i b i l i t y t o t h e S CS I -2 , S CS I - 1 a n d a Single-Ended specifications. Multi-mode function set up the use of legacy devices on the bus without changing any hardware setting. Automatic selection is made by voltage detection on the DIFFSEN line. If the device is connected in an LVD only bus, the HP7501 will use LVD termination. If the device is connected in a Single Ended mode, the H P 7 5 0 1 wi l l c o n n e c t i n a S E t e rm i n a t i o n . HiMARK’s SCSI termination architecture uses high speed elements for the design, therefore providing the fast response time. PACKAGE PINOUT VREF 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 DIFFSENSE MST/SLV VREF R1P R1N R2P R2N HGND 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 HGND R7N R7P R6N R6P DIF_CAP DIFFSENSE MST/SLV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 .. NC NC R1P R1N R2P R2N HGND HGND HGND R3P R3N R4P R4N R5P R5N ISO...