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PDF G219T-D3 Data sheet ( Hoja de datos )
| Número de pieza | G219T-D3 | |
| Descripción | Ultra320 Multi-mode LVD/SE SCSI Terminator | |
| Fabricantes | ETC | |
| Logotipo |  |
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Global Mixed-mode Technology Inc.
G219
Ultra320 Multi-mode LVD/SE SCSI Terminator
Features
Auto-selectable multi-mode Single-Ended
or LVD Termination
Meets SCSI-1, SCSI-2, SCSI-3 SPI Ultra
(Fast-20), Ultra 2(SPI-2 LVD), Ultra160 (SPI-3
LVD), and Ultra320 (SPI-4 LVD) standards
Supports active negation
3pF channel capacitance
2.9V to 5.5V operation
Thermal protection
Hot-Swap compatible
5% tolerance on SE and LVD termination
resistance
28 pin TSSOP package
28 Pin TSSOP: Pin Compatible with DS2119
Applications
Server and workstation
High-end PC
Industrial PC
Disk Array (RAID)
SCSI cable
General Description
The G219 Multi-mode LVD/SE SCSI terminator pro-
vides a smooth transition into the next generation of
the SCSI Parallel Interface (SPI-4). It automatically
senses the bus, via DIFFSENS, and switches the ter-
mination to either single-ended (SE) or low voltage
differential (LVD) SCSI, dependent on which type of
devices are connected to the bus. If the G219 detects
a HVD SCSI device, it switches to a high impedance
state. For a 16-bit Wide SCSI bus to be operational,
three G219 terminators are needed.
The Multi-mode terminator contains all functions re-
quired to terminate and auto detect and switch modes
for SCSI Parallel Interface (SPI) bus architectures. For
the SE termination, one regulator and nine precision
110ohm resistors are used. For the LVD termination,
the G219 integrates 18 regulated supplies with nine
precision resistor strings.
Pin Configuration
VREF 1
R1+ 2
R1- 3
R2+ 4
R2- 5
NC/ HS GND
R3+
R3-
R4+
6
7
8
9
R4- 10
R5+ 11
R5- 12
DISCNCT 13
GND 14
G219
28 TPWR
27 TPWR
26 R9-
25 R9+
24 R8-
23 R8+
22 NC/ HS GND
21 R7-
20 R7+
19 R6-
18 R6+
17 DIFFB
16 DIFFSENSE
15 M/S
28Pin TSSOP
Ver 1.2
Feb 08, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page  
Global Mixed-mode Technology Inc.
Recommended Operating Conditions
PARAMETER
Termpower Voltage
Logic 0
Logic 1
Operating Temperature
SYMBOL
Vtpwr(SE)
Vtpwr(LVD)
Vil
Vih
Tamb
MIN
4.0
2.9
-0.3
2.0
0
TYP
5
5
MAX
5.5
5.5
+0.8
Vtpwr+0.3
70
G219
UNITS
V
V
V
°C
Electrical Characteristics
Unless otherwise specified, these specifications apply over the operating ambient temperature range of
0°C≤TA≤70°C.
PARAMETER
SYMBOL
CONDITION
LVD Terminator Section
Differential Mode Termination Resistance Rdm
Common Mode Termination Resistance Rcm
Differential Mode Bias
Vdm
All lines Open
Common Mode Bias
Vcm
Single Ended Terminator Section
Output Capacitance
Cout
Note
SE Termination Resistance
Rse Vline = 0-3.0 volts
SE Voltage Reference
Vref
SE output Current
Iose Vline = 0.2 volts
Regulator Section
Line Regulation
LIREG
Load Regulation
LOREG
Current Limit
ILIM
Sink Current
ISINK
DC Section
Termpower Current
SE mode (No Load)
Itpmr LVD mode (No Load)
Input Leakage High
Input Leakage Low
Iih
Iil
DIFFSENS Section
DIFFSENS SE Operating Range
Vseor
DIFFSENS LVD Operating Range
Vlvdor
DIFFSENS HVD Operating Range
Vhvdor
DIFFSENSE Driver Output Voltage
Vdso M/S=1; Ids = 0-5mA
DIFFSENSE Driver Source Current
Idsh M/S = 1; Vdso=0V
DIFFSENSE Driver Sink Current
Idsl M/S=1; Vdso=2.75V
Note: Guaranteed by Design.
MIN TYP MAX UNITS
100
110
100
1.125
105
150
112
1.25
110
190
125
1.375
Ohms
Ohms
mV
V
104.5 110
2.79 2.85
3
115.5
2.93
25.4
pF
Ohms
Volts
mA
1.0
1.3
350
200
2.5
3.5
%
%
mA
mA
4
mA
20
-1.0 µA
1.0 µA
-0.3 0.5 V
0.7 1.9 V
2.4 Vtpwr+0.3 V
1.2 1.4 V
5 15 mA
20 200 µA
Ver 1.2
Feb 08, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
5
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet G219T-D3.PDF ] | |
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