Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
1
G218B
Global Mixed-mode Technology Inc.
Ultra160 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) standards.
Supports active negation
3pF channel capacitance
Thermal protection
Hot-Swap compatible
5% tolerance on SE and LVD termination
resistance
28 and 36 pin SSOP package
28 Pin SSOP: Pin Compatible with DS2119
36 Pin SSOP: Pin Compatible with DS2118,
LX5241 and UCC5630
Applications
Server and workstation
High-end PC
Industrial PC
Disk Array (RAID)
SCSI cable
General Description
The G218B Multi-mode LVD/SE SCSI terminator pro-
vides a smooth transition into the next generation of
the SCSI Parallel Interface (SPI-3). 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 G218B de-
tects a HVD SCSI device, it switches to a high imped-
ance state. For a 16-bit Wide SCSI bus to be opera-
tional, three G218B 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 G218B integrates 18 regulated supplies with nine
precision resistor strings.
Pin Configuration
R1-
R1+
R2-
NC/HS GND
R3+
R3-
R4+
R4-
R5+
R5-
DISCNCT
GND
TPWR
R9-
R9+
R8+
R8-
R7-
R6-
R6+
DIFFB
DIFFSENSE
M/S
SSOP-28/TSSOP-28
VREF
R2+
TPWR
R7+
G218B
1
2
3
4
28
27
26
25
5
6
7
8
9
10
11
12
13
14
24
23
22
21
20
19
18
17
16
15
NC/HS GND
NC
NC
R1+
R1-
R2-
HS/GND
HS/GND
R3+
R3-
R4+
R4-
R5+
R5-
DISCNCT
GND
TPWR
HVD
LVD
SE
R9-
R9+
R8-
R8+
HS/GND
HS/GND
HS/GND
R7-
R7+
R6-
R6+
DIFFB
DIFFSENSE
M/S
VREF
R2+
HS/GND
SSOP-36
G218B
1
2
3
4
28
27
26
25
5
6
7
8
9
10
11
12
13
14 24
23
22
21
20
19
16
17
15
18
33
32
31
30
29
36
35
34
R1-
R1+
R2-
NC/HS GND
R3+
R3-
R4+
R4-
R5+
R5-
DISCNCT
GND
TPWR
R9-
R9+
R8+
R8-
R7-
R6-
R6+
DIFFB
DIFFSENSE
M/S
SSOP-28/TSSOP-28
VREF
R2+
TPWR
R7+
G218B
1
2
3
4
28
27
26
25
5
6
7
8
9
10
11
12
13
14
24
23
22
21
20
19
18
17
16
15
NC/HS GND
NC
NC
R1+
R1-
R2-
HS/GND
HS/GND
R3+
R3-
R4+
R4-
R5+
R5-
DISCNCT
GND
TPWR
HVD
LVD
SE
R9-
R9+
R8-
R8+
HS/GND
HS/GND
HS/GND
R7-
R7+
R6-
R6+
DIFFB
DIFFSENSE
M/S
VREF
R2+
HS/GND
SSOP-36
G218B
1
2
3
4
28
27
26
25
5
6
7
8
9
10
11
12
13
14 24
23
22
21
20
19
16
17
15
18
33
32
31
30
29
36
35
34
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
2
G218B
Global Mixed-mode Technology Inc.
Ordering Information
ORDER
NUMBER ORDER NUMBER
(Pb free) TEMP.
RANGE PACKAGE FEATURE
G218BT-S4 G218BT-S4f 0ºC-70ºC SSOP-28 / Tube DISCNCT does not disable VREF
G218BR-S4 G218BR-S4f 0ºC-70ºC SSOP-28 / Tape & Reel DISCNCT does not disable VREF
G218BT-S5 G218BT-S5f 0ºC-70ºC SSOP-36 / Tube DISCNCT does not disable VREF
G218BR-S5 G218BR-S5f 0ºC-70ºC SSOP-36 / Tape & Reel DISCNCT does not disable VREF
G218BT-D3 G218BT-D3f 0ºC-70ºC TSSOP-28 / Tube DISCNCT does not disable VREF
G218BR-D3 G218BR-D3f 0ºC-70ºC TSSOP-28 / Tape & Reel DISCNCT does not disable VREF
Note:
DIFFSENS⎯Refers to the SCSI bus signal.
DIFFSENSE⎯Refers to the G218B pin name and internal circuitry relating to differential sensing.
DIFFB⎯Refers to the G218B pin name and internal circuitry relating to monitoring the DIFFSENS line.
Functional Description
The G218B is used in multi-mode active termination
applications, where single ended (SE) and low voltage
differential (LVD) devices might coexist. The LVD ter-
mination section consists of 18 source/sink amplifiers
(VTOP, VBOT), biasing circuitry and nine precision
resistor strings (RTOP, RMID, RBOT). The SE termi-
nation section consists of a 2.85V source/sink regula-
tor with 9 precision 110ohm resistor. The DIFFSENSE
section consists of a 1.3V, 5mA driver and a sensing
circuit (Figure 1)
DIFFSENS is used to identify which types of SCSI
devices are present on the bus. If the voltage on
DIFFSENS is between 0-0.5V the bus is single-ended;
if it is between 0.7-1.9V the bus is LVD; and if it is
greater than 2.4V, the bus is HVD.
The G218B DIFFB pin monitors the DIFFSENS line to
determine the proper operating mode of the device;
this mode is indicated by the SE/LVD/HVD outputs.
HVD Isolation Mode The G218B identifies that there
is an HVD (high voltage differential) device on the
SCSI bus and isolates the termination pins from the
bus.
When DISCNCT is pulled high, the termination pins
are isolated from the SCSI bus, and the bus mode
indicators (SE/LVD/HVD) as well as VREF remains
active. During thermal shutdown, the termination pins
are isolated from the SCSI bus and VREF becomes
high impedance. The DIFFSENSE driver is shut down
during either of these two events.
To ensure proper operation, the TPWR pin should be
connected to the SCSI bus TERMPWR line. As with all
analog circuitry, the TERMPWR lines should be by-
passed locally. A 2.2µF capacitor and a 0.01µF high
frequency capacitor is recommended between TPWR
and ground and placed as close as possible to the
G218B. The G218B should be placed as close as
possible to the SCSI connector to minimize signal and
power trace length, thereby resulting in less input ca-
pacitance and reflections which can degrade the bus
signals.
The DIFFSENSE pin can drive the SCSI DIFFSENS
line (when M/S is pulled high) to determine the SCSI
bus operating mode. The G218B switches to the ter-
mination mode that is appropriate for the bus based on
the value of the DIFFSENS voltage. These modes are:
LVD mode LVD termination is provided by a precision
resistor string with two amplifiers. This configuration
yields a 105Ω differential and 150Ω common mode
impedance. A fail safe bias of 112mV is maintained
when no drivers are connected to the SCSI bus.
SE mode When the external driver for a given signal
line turns off, the active terminator will pull that signal
line to 2.85 volts (quiescent state). When used with an
active negation driver, the power amp can sink 22mA
per line while keeping the voltage reference in regula-
tion. The terminating resistors maintain their 110Ω
value.
To maintain the specified regulation, a 4.7µF capacitor
is required between the VREF pin and ground of each
G218B. A high frequency cap (0.1µF ceramic recom-
mended) can also be placed on the VREF pin in ap-
plications that use fast rise/fall time drivers. A typical
SCSI bus configuration is shown in Figure2.
An internal pull down resistor assures that the G218B
will be terminating the bus if the DISCNCT pin is left
floating.
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
3
G218B
Global Mixed-mode Technology Inc.
Block Diagram (Figure 1)
DIFFB
DIFFSENSE SE LVDHVD
THERMAL
SHUTDOWN
CIRCUITRY
DISCNCT
CONTROL
LOGIC
VREF
DIFFSENSE
CIRCUITRY
REFERENCE
GENERATION
VREF
110 Ohm s
110 Ohms
R1-
R9-
VTOP1
RTOP1
RMID1
RBOT1
R1+
R1-
R9-
R9+
R1-
R9-
SE
GND
DRIV ER
VBOT1
R1+
R9+
36pin SSOP only
+
_
+
_
()
X 9
X 9
RTOP9
RMID9
RBOT9
M/S
DIFFB
DIFFSENSE SE LVDHVD
THERMAL
SHUTDOWN
CIRCUITRY
DISCNCT
CONTROL
LOGIC
VREF
DIFFSENSE
CIRCUITRY
REFERENCE
GENERATION
VREF
110 Ohm s
110 Ohms
R1-
R9-
VTOP1
RTOP1
RMID1
RBOT1
R1+
R1-
R9-
R9+
R1-
R9-
SE
GND
DRIV ER
VBOT1
R1+
R9+
36pin SSOP only
+
_
+
_
+
_
+
_
()
X 9
X 9
RTOP9
RMID9
RBOT9
M/S
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
4
G218B
Global Mixed-mode Technology Inc.
SCSI Bus Configuration (Figure 2)
G218B G218B
G218B G218B
TPWR
M/S
DISCNCT
DIFFSENSE
CONTROL L INE S (9)
DIFFSENS
TPWR
TERMPWR
20K
VREF DIFFB
0.1µF
DIFFSENSE
DIFFB VREF
TERMPWR
TPWR
M/S
DISCNCT
DIFFB VREF
TPWR
DIFFB VREF
TPWR DATA LINES (9)
VREF DIFFB
TPWR
VREF DIFFB
DATA LINES (9)
G218B
G218B
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF 0.1µF
20K
G218B G218B
G218B G218B
TPWR
M/S
DISCNCT
DIFFSENSE
CONTROL L INE S (9)
DIFFSENS
TPWR
TERMPWR
20K
VREF DIFFB
0.1µF
DIFFSENSE
DIFFB VREF
TERMPWR
TPWR
M/S
DISCNCT
DIFFB VREF
TPWR
DIFFB VREF
TPWR DATA LINES (9)
VREF DIFFB
TPWR
VREF DIFFB
DATA LINES (9)
G218B
G218B
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF 0.1µF
20K
G218B G218B
G218B G218B
TPWR
M/S
DISCNCT
DIFFSENSE
CONTROL L INE S (9)
DIFFSENS
TPWR
TERMPWR
20K
VREF DIFFB
0.1µF
DIFFSENSE
DIFFB VREF
TERMPWR
TPWR
M/S
DISCNCT
DIFFB VREF
TPWR
DIFFB VREF
TPWR DATA LINES (9)
VREF DIFFB
TPWR
VREF DIFFB
DATA LINES (9)
G218B
G218B
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
2.2µF
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
M/S
DISCNCT
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF
4.7µF 0.1µF
20K
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
5
G218B
Global Mixed-mode Technology Inc.
Recommended Operating Conditions
PARAMETER SYMBOL MIN TYP MAX UNITS
Vtpwr (SE) 4.0 5 5.5
Termpower Voltage Vtpwr (LVD) 2.9 5 5.5 V
Logic 0 Vil -0.3 --- +0.8 V
Logic 1 Vih 2.0 --- Vtpwr+0.3 V
Operating Temperature Tamb 0 --- 70 °C
Electrical Characteristics
Unless otherwise specified, these specifications apply over the operating ambient temperature range of
0°C≤TA≤70°C.
PARAMETER SYMBOL Condition MIN TYP MAX UNITS
LVD Terminator Section
Di f fe r e n t ia l Mo d e Te r m in a t io n Re s i st a n c e Rdm 100 105 110 Ohms
Common Mode Termination Resistance Rcm 110 150 190 Ohms
Differential Mode Bias Vdm All lines Open 100 112 125 mV
Common Mode Bias Vcm 1.125 1.25 1.375 V
Single Ended Terminator Section
Output Capacitance Cout Note 3 pF
SE Termination Resistance Rse Vline = 0-3.0 volts 104.5 110 115.5 Ohms
SE Voltage Reference Vref 2.79 2.85 2.93 Volts
SE output Current Iose Vline = 0.2 volts 25.4 mA
Regulator Section
Line Regulation LIREG 1.0 2.5 %
Load Regulation LOREG 1.3 3.5 %
Current Limit ILIM 350 mA
Sink Current ISINK 200 mA
DC Section SE mode (No Load) 4
Termpower Current Itpmr LVD mode (No Load) 20 mA
Input Leakage High Iih -1.0 µA
Input Leakage Low Iil 1.0 µA
Output Current High Ioh V
out = 2.4 volts;SE/LVD/HVD Pins only -1.0 mA
Output Current Low Iol V
out=0.4 volts;SE/LVD/HVD Pins only 4.0 mA
DIFFSENS Section
DIFFSENS SE Operating Range Vseor -0.3 0.5 V
DIFFSENS LVD Operating Ran ge Vlvdor 0.7 1.9 V
DIFFSENS HVD Operating Range Vhvdor 2.4 Vtpwr+0. 3 V
DIFFSENSE Driver Output Voltage Vdso M/S=1; Ids = 0-5mA 1.2 1.4 V
DIFFSENSE Driver Source Current Idsh M/S = 1; Vdso=0V 5 15 mA
DIFFSENSE Driver Sink Current Idsl M/S=1; Vdso=2.75V 20 200 µA
Note: Guaranteed by Design.
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
6
G218B
Global Mixed-mode Technology Inc.
Typical Operating Characteristics
Common Mode Bias Vcm - Vtpwr
1.125
1.175
1.225
1.275
1.325
1.375
2.5 3.5 4.5 5.5
Vtpwr
Vcm(V)
Common Mode Bias Vcm -
Temperature
1.125
1.175
1.225
1.275
1.325
1.375
-20 0 20 40 60 80 100
Temperature(℃)
Vcm(V)
Common Mode T ermination Resistance
Rcm - Temperature@Vtpwr=5V
110
120
130
140
150
160
170
180
190
-20 0 20 40 60 80 100
Temperature(ºC)
Rcm(Ohm)
Comm on M ode Term in ation Resistan ce
Rcm - V tp wr@Temp e rature= 24ºC
110
120
130
140
150
160
170
180
190
2.5 3.5 4.5 5.5
Vtpwr
Rcm(Ohm)
Differential M od e Termin ation
Resistance Rdm - Vtpw r
100
102
104
106
108
110
2.5 3.5 4.5 5.5
Vtpwr
Rdm(Ohm)
Differential M ode Termin ation Resistance
Rdm - Temperature
100
102
104
106
108
110
-20 0 20 40 60 80 100
Temperature(ºC)
Rdm(Ohm)
Differential Mode Bias Vdm -
Temperature @Vtpwr=5V
0.1
0.105
0.11
0.115
0.12
0.125
-20 0 20 40 60 80 100
Temperature(ºC)
Vdm(V)
Differential Mod e Bias Vdm - Vtpwr
0.1
0.105
0.11
0.115
0.12
0.125
2.5 3.5 4.5 5.5
Vtpwr
Vdm(V)
T=80ºC
T=-10ºC
Vtpwr=5.8V
Vtpwr=2.8V
T=80ºC
T=-10ºC
Vtpwr=2.8V
Vtpwr=5.8V
T=-10ºC
T=80ºC
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
7
G218B
Global Mixed-mode Technology Inc.
SE Termination Resistance Rse - Vtpwr
@T=24ºC;Vline=0V
105
106
107
108
109
110
111
112
113
114
115
3.5 4.5 5.5
Vtpwr
Rse(Ohm)
SE Termination Resistance Rse - Vtpwr
@Vline=0V
105
106
107
108
109
110
111
112
113
114
115
-20 0 20 40 60 80 100
Temperature(ºC)
Rse(Ohm)
SE Ter mina tion Re sistan ce Rs e - V t pwr
@Vtpwr=5V;T=24ºC
105
106
107
108
109
110
111
112
113
114
115
0123
Vline
Rse(Ohm)
Vref - Ivref@Vtpwr=5V;T=24ºC
2.79
2.81
2.83
2.85
2.87
2.89
2.91
2.93
-250 -150 -50 50 150 250 350
Ivref(mA)
Vref
Vref - Temperature@Ivref=0mA
2.79
2.81
2.83
2.85
2.87
2.89
2.91
2.93
-20 0 20 40 60 80 100
Temperature(ºC)
Vref
Vref - Vtpwr@T=24ºC
2.79
2.81
2.83
2.85
2.87
2.89
2.91
2.93
3.5 4.5 5.5 6.5
Vtpwr
Vref
V
tpwr
=3.8V
V
tpwr
=5.8V
V
tpwr
=5.8V
V
tpwr
=3.8V I
vref
=350mA
I
vref
=-200mA
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
8
G218B
Global Mixed-mode Technology Inc.
Pin Description (for 28pin SSOP/TSSOP)
PIN SYMBOL DESCRIPTION
1 VREF*
Reference Voltage. 2.85-volt reference; must be connected to a 4.7µF capacitor.
2-5,7-12,
18-21, 23-26 Rx+, Rx-
Signal Termination. (X=1,2,3,…..9)
Rx+: Ground line for single-ended or positive line for differential applications for the SCSI bus.
Rx-: Signal line/active line for single-ended or negative line in differential applications for the SCSI
bus.
6,22 NC/ HS GND No Connect/ HS GND. Should be grounded for heat sinking purpose.
13 DISCNCT
Disconnect. When pulled high, the G218B isolates its bus pins (Rx +, Rx-) from the SCSI bus.
14 GND
Ground. Terminator ground pin. Connected to ground.
15 M/S
Master/slave. Used to select which terminator is the controlling device. M/S pin high enables the
DIFFSENSE dr i v er .
16 DIFFSENSE Output to drive the SCSI bus DIFFSENS line.
17 DIFFB
DIFFB pin should be connected to a 0.1µF capacitor to GND and 20k resistor to SCSI/Bus
DIFFSENS line. An input pin to detect the type of device (differential or single-ended) on the SCSI
bus.
27,28 TPWR
Terminator Power. Connect to the SCSI TERMPWR line and de-couple with a 2.2µF capacitor.
*The VREF keeps the level at 2.85 volt, despite the DISCNCT pin is asserted or not; even the termin ation mode is changed.
(36pin SSOP)
PIN SYMBOL DESCRIPTION
1 VREF*
Reference Voltage. 2.8 5-volt refe rence; must be c onnected to a 4. 7µF ca pacitor.
2,3 NC
No Connect. Do not connect these pins.
4-7,11-16,
22-25,
29-32
Rx+
Rx-
Signal Termination. (X=1,2,3,…..9)
Rx+: Ground line for single-ended or positive line for differential applications for the SCSI bus.
Rx-: Signal line/active line for single-ended or negative line in differential applications for the SCSI bus.
8, 9,10,26,
27,28 HS/GND Heat Sink Ground. Connect to large area PC board traces to increase power dissipation capabil-
ity.
17 DISCNCT
Disconnect. When pulled high, the G218 isolates its bus pins (Rx+, Rx-) from the SCSI bus.
18 GND
Ground. Terminator ground pin. Connected to ground.
19 M/S
Master/slave. Used to select which terminator is the controlling device. M/S pin high enables the
DIFFSENSE dr i v er .
20 DIFFSENSE Output to drive the SCSI bus DIFFSENS line.
21 DIFFB
DIFFB pin should be connected to a 0.1µF capacitor to GND an d 20k resistor to SCSI/Bus
DIFFSENS line. An input pin to detect the ty pe of device (differential or single-ended) on the SCSI
bus.
33 SE
Single ended mode indicator . It is HIGH when terminator is operating in SE mode.
34 LVD
Low Voltage Differential mode indicator. It is HIGH w hen terminator is operating in LVD mode.
35 HVD
High Voltage Differential mode indicator. It is HIGH when terminator is operat ing in HV D mode
36 TPWR
Terminator Power. Connect to SCSI bus TERMPWR line and decouple with 2.2µF capacitor.
*The VREF keeps the level at 2.85 volt, despite the DISCNCT pin is asserted or not; even the termination mode is changed.
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
9
G218B
Global Mixed-mode Technology Inc.
Package Information
SSOP-28 Package
DIMENSION IN MM DIMENSION IN INCH
SYMBOL MIN. TYP. MAX. MIN. TYP. MAX.
A 1.35 1.60 1.75 0.053 0.064 0.069
A1 0.10 ----- 0.25 0.004 ----- 0.010
A2 ----- 1.45 ----- ----- 0.057 -----
b 0.20 0.25 0.30 0.008 0.010 0.012
C 0.19 ----- 0.25 0.007 ----- 0.010
D 9.80 ----- 10.00 0.386 ----- 0.394
E 5.80 ----- 6.20 0.228 ----- 0.244
E1 3.80 ----- 4.00 0.150 ----- 0.157
e ----- 0.64 ----- ----- 0.025 -----
L 0.40 ----- 1.27 0.016 ----- 0.050
y ----- ----- 0.10 ----- ----- 0.004
θ 0º ----- 8º 0º ----- 8º
28
E1 E
D
1
e
b
A
A1
A2
C
1.00 REF
L
0.25
θ
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
10
G218B
Global Mixed-mode Technology Inc.
SSOP-36 Package
Dimension in mm Dimension in inch
Symbol MIN. TYP. MAX. MIN. TYP. MAX.
A 2.413 2.591 2.794 0.095 0.102 0.110
A1 0.203 0.305 0.406 0.008 0.012 0.016
b 0.300 ---- 0.450 0.012 ---- 0.018
c 0.127 ---- 0.254 0.005 ---- 0.010
D 15.748 15.875 16.002 0.620 0.625 0.630
e 0.800 BASIC 0.032 BASIC
E 10.033 ---- 10.668 0.395 ---- 0.420
E1 7.391 7.493 7.595 0.291 0.295 0.289
h 0.381 ---- 0.635 0.015 ---- 0.025
L 0.508 ---- 1.016 0.020 ---- 0.040
θ 0 ---- 8 0 ---- 8
h x 45°
C
L
θ
E1 E
SEATING PLANE
0.004 C
D
b
e
A
A1
Ver 1.4
Apr 07, 2005 TEL: 886-3-5788833
http://www.gmt.com.tw
11
G218B
Global Mixed-mode Technology Inc.
TSSOP-28 Package
NOTE:
1. Package body sizes exclude mold flash protrusions or gate burrs
2. Tolerance ±0.1mm unless otherwise specified
3. Coplanarity : 0.1mm
4. Controlling dimension is in millimeter. Converted inch dimensions are not necessarily accurate.
5. Follow JEDEC MO-153
DIMENSION IN MM DIMENSION IN INCH
SYMBOL MIN. NOM. MAX. MIN. NOM. MAX.
A ----- ----- 1.20 ----- ----- 0.048
A1 0.05 ----- 0.15 0.002 ----- 0.006
A2 0.80 1.00 1.05 0.031 0.039 0.041
b 0.19 ----- 0.30 0.007 ----- 0.012
C 0.09 ----- 0.20 0.004 ----- 0.008
D 9.60 9.70 9.80 0.378 0.382 0.386
E ----- 6.40 ----- ----- 0.252 -----
E1 4.30 4.40 4.50 0.169 0.173 0.177
e ----- 0.65 ----- ----- 0.026 -----
L 0.45 0.60 0.75 0.018 0.024 0.030
y ----- ----- 0.10 ----- ----- 0.004
θ 0º ----- 8º 0º ----- 8º
Taping Specification PACKAGE Q’TY/REEL Q’TY/TUBE
SSOP-28 2,500 ea 50 ea
SSOP-36 1,000 ea 29 ea
TSSOP-28 2,500 ea 50 ea
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to c hange said circuitry and specifications.
28
E1 E
D
1
b
A
A1
A2
C
L
θ
e
Feed Direction
Typical SS OP , TS SO P Package O rientation
Feed Direction
Typical SS OP , TS SO P Package O rientation
