G261 Datasheet, PDF (1/5 Pages) Global Mixed-mode Technology Inc – Low Voltage Differential (LVD) SCSI 27 Line Regulator Set

Global Mixed-mode Technology Inc.
G261
Low Voltage Differential (LVD) SCSI 27 Line Regu-
lator Set
Features
„ SCSI SPI-2 (Ultra 2), SPI-3 (Ultra 3/Ultra 160)
and SPI-4 (Ultra 320) LVD SCSI, 27 Line Low
Voltage Differential Regulator
„ 4V to 5.25V Operation
„ Integrated Regulator Set for LVD SCSI
„ Differential Failsafe Bias
Applications
„ SCSI cable
„ SCSI card
„ Disk Array
„ Industrial PC
„ POS
Description
The G261 LVD Regulator set is designed to provide
the correct reference voltages and bias currents for
LVD termination resistor networks (475Ω, 121Ω, and
475Ω). The device also provides a 1.3V output for
DIFFSENSE signaling. With the proper resistor net-
work, the G261 solution will meet the common mode
impedance, differential mode impedance, differential
bias voltage and common mode voltage requirements
of SPI-2 (Ultra2), SPI-3 (Ultra 3/Ultra 160) and SPI-4
(Ultra 320).
This device contains two sink / source reference volt-
age regulators, a 1.3V buffered output and protection
features. The protection features include thermal
shutdown and active current limiting circuitry. The
G261 is offered in 8 pin SOP and 16pin SOP.
Ordering Information
ORDER
NUMBER
G261P1U
G261P3U
ORDER NUMBER TEMP.
(Pb free)
RANGE
G261P1Uf
0°C~70°C
G261P3Uf
0°C~70°C
PACKAGE
SOP-8
SOP-16
Pin Configuration
REG2 ¹
HSPGND 2
HSPGND 3
REG1 4
G261
SOP-8
8 TERMPWR
7 HSGND
6 _HSGND
5 DIFFSENSE
NC 1
TERMPWR 2
REG2 3
HSPGND 4
HSGND 5
REG1 6
DIFFSENSE 7
NC 8
G261
SOP-16
16 _NC
15 NC
14 NC
13 HSGND
12 HSGND
11 NC
10 NC
9 NC
Ver 3.2
Dec 13, 2004
TEL: [phone]
http://www.gmt.com.tw
1