HP7501 Datasheet, PDF (1/9 Pages) List of Unclassifed Manufacturers – Ultra320 LVD/SE SCSI Terminator

HP7501
Ultra320 LVD/SE SCSI Terminator
FEATURES
Fully compliant 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 compatible.
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
compatibility to the SCSI-2, SCSI-1 and 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
HP7501 will connect in a SE termination.
HiMARK’s SCSI termination architecture uses high
speed elements for the design, therefore providing the
fast response time.
PACKAGE PINOUT
VREF
NC
NC
R1P
R1N
R2P
R2N
HGND
HGND
HGND
R3P
R3N
R4P
R4N
R5P
R5N
ISO
GND
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13
24
14
23
15
22
16
21
17
20
18
19
HP7501-A36
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
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
HP7501-T28
TPWR
TPWR
R9N
R9P
R8N
R8P
HGND
R7N
R7P
R6N
R6P
DIF_CAP
DIFFSENSE
MST/SLV
2003/05/12 Ver. 0.0
1
HIMARK TECHNOLOGY INC.