STMUX1800E Datasheet by STMicroelectronics

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November 2011 Doc ID 16772 Rev 3 1/26
1
STMUX1800E
16-bit to 8-bit MUX/DEMUX for gigabit Ethernet LAN switch
with LED switch and enhanced ESD protection
Features
Low RON: 4.0 Ω typical
VCC operating range: 3.0 to 3.6 V
Enhanced ESD protection: > 8 kV (contact)
and 15 kV (HBM)
Low power mode for minimum power
consumption
Channel on capacitance: 9.5 pF typical
Switching time speed: 9 ns
Near to zero propagation delay: 250 ps
Very low crosstalk: -45 dB at 250 MHz
Bit-to-bit skew: 200 ps
> 600 MHz -3 dB typical bandwidth (or data
frequency)
Three SPDT switches for LED support
Rail-to-rail switching on data I/O ports
(0 V to 5 V)
Package: QFN42
Lead-free
Applications
10/100/1000 Mbit Ethernet switching
Audio/video switching
Description
The STMUX1800E is a 16 to 8-bit multiplexer/
demultiplexer low RON bidirectional LAN switch
designed for various standards, such as
10/100/1000 Ethernet. It is designed for very low
crosstalk, low bit-to-bit skew and low I/O
capacitance.
The differential signal from the Gigabit Ethernet
transceiver is multiplexed into one of two selected
outputs while the unselected switch goes to Hi-Z
status.
The device integrates three SPDT (single pole
dual throw) switches, for LED support.
The device can be put into low power mode
consuming minimum power.
Table 1. Device summary
Order code Package Packing
STMUX1800EQTR QFN42 Tape and reel
QFN42
www.st.com
Contents STMUX1800E
2/26 Doc ID 16772 Rev 3
Contents
1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
STMUX1800E List of tables
Doc ID 16772 Rev 3 3/26
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. LAN switch function table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. LED switch function table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 7. DC electrical characteristics for Gigabit Ethernet LAN8/16MUX/DEMUX
(VCC = 3.3 V ±10%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 8. DC electrical characteristics for 10/100 Ethernet LAN8/16MUX/DEMUX
(VCC = 3.3 V ±10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 9. Capacitance (TA = 25 °C, f = 1 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 10. Power supply characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 11. Dynamic electrical characteristics (VCC = 3.3 V ±10%) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 12. Switching characteristics (TA = 25 °C, VCC = 3.3 V ±10%) . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 13. ESD performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 14. Mechanical data for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 15. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
List of figures STMUX1800E
4/26 Doc ID 16772 Rev 3
List of figures
Figure 1. Pin connection (top through view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Input equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Diagram for suggested VCC decoupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4. Test circuit for leakage current (IOFF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Test circuit for SEL pin input capacitance (CIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6. Test circuit for switch off capacitance (COFF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 7. Test circuit for switch on capacitance (CON). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. Test circuit for bandwidth measurement (BW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9. Test circuit for crosstalk measurement (xtalk) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10. Test circuit for off isolation measurement (OIRR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11. Package outline for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 12. Footprint recommendation for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm . . . . . . . . . . . . . . . . 22
Figure 13. Carrier tape information for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm . . . . . . . . . . . . . . . . . . 23
Figure 14. Reel information for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm . . . . . . . . . . . . . . . . . . . . . . . . 24
LP U Io-nm SEL LED1 LED2 LEDLO Table 2. Pin description Pin Symbol 2, 3, 6.7, 9, 10. 11,12 A,B,C,D.E.F,G,H 38, 37. 34, 33. 29, 28. 25, 24 A0, B0, CO, D0, E0, F0, GU. 36, 35. 32, 31. 27, 26. 25, 22 A1,B1,C1,D1,E1,F1,G1. 5 LP 13 SEL 15, 16, 42 LED1. LED2, LEDE 17.18,41.19,20.40 LED170, LED270. LEDiLO LED171, LED271, LEDS, 1,4,8, 14,21,130. 39 Vcc Doc ID 16772 Rev 3
STMUX1800E Pin description
Doc ID 16772 Rev 3 5/26
1 Pin description
Figure 1. Pin connection (top through view)
Table 2. Pin description
Pin Symbol Name and function
2, 3, 6, 7, 9, 10, 11, 12 A, B, C, D, E, F, G, H 8-bit bus
38, 37, 34, 33, 29, 28, 25, 24 A0, B0, C0, D0, E0, F0, G0, H0 8-bit multiplexed to bus 0
36, 35, 32, 31, 27, 26, 23, 22 A1, B1, C1, D1, E1, F1, G1, H1 8-bit multiplexed to bus 1
5 LP Low power mode enable
13 SEL Bus and LED switch selection
15, 16, 42 LED1, LED2, LED3 LED switch input
17, 18, 41, 19, 20, 40 LED1_0, LED2_0, LED3_0,
LED1_1, LED2_1, LED3_1 LED switch output
1, 4, 8, 14, 21, 30, 39 VCC Supply voltage
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Pin description STMUX1800E
6/26 Doc ID 16772 Rev 3
Figure 2. Input equivalent circuit
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MANAGEMENT
STMUX1800E Pin description
Doc ID 16772 Rev 3 7/26
Table 3. LAN switch function table
LP SEL Function
L L 8-bit bus to 8-bit multiplexed bus 0
L H 8-bit bus to 8-bit multiplexed bus 1
H X Bus 0 and 1 in Hi-Z
Table 4. LED switch function table
LP SEL Function
L L LED switch input connected to LED switch output X_0
L H LED switch input connected to LED switch output X_1
H X Output X_0 and X_1 in Hi-Z
Maximum rating STMUX1800E
8/26 Doc ID 16772 Rev 3
2 Maximum rating
Stressing the device above the rating listed in Table 5: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in Table 6: Recommended
operating conditions of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
Recommended operating conditions
Table 5. Absolute maximum ratings
Symbol Parameter Value Unit
VCC Supply voltage to ground -0.5 to 4.6 V
VIO DC input output voltage -0.5 to 4.6 V
VIC DC control input voltage -0.5 to 4.6 V
IODC output current(1)
1. If VIO x IO does not exceed the maximum limit of PD.
120 mA
PDPower dissipation 0.5 W
Tstg Storage temperature -65 to 150 °C
TLLead temperature (10 seconds) 300 °C
Table 6. Recommended operating conditions
Symbol Parameter
Value
Unit
Min. Typ. Max.
VCC Supply voltage to ground 3 3.6 V
VIC DC control input voltage (SEL, LP) 0 VCC V
VIO DC input/output voltage 0 VCC V
TAOperating temperature -40 85 °C
STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 9/26
3 Electrical characteristics
Table 7. DC electrical characteristics for Gigabit Ethernet LAN8/16MUX/DEMUX
(VCC = 3.3 V ±10%)
Symbol Parameter Test condition
Value
Unit-40 to 85 °C
Min. Typ. Max.
VIH Voltage input high (SEL, LP) High level guaranteed 2.4 V
VIL
Voltage input low
(SEL, LP) Low level guaranteed -0.5 0.8 V
VIK
Clamp diode voltage
(SEL, LP)
VCC = 3.6 V
IIN = -18 mA —-0.8-1.2V
IIH
Input high current
(SEL, LP)
VCC = 3.6 V
VIN = VCC
——±5µA
IIL Input low current
(SEL, LP)
VCC = 3.6 V
VIN = GND ——±5µA
IOFF(SW)(1)
Leakage current through the
switch common terminals (A to H)
(LED1 to LED3)
VCC = 3.6 V
A to H = VCC
LED1 to LED3 = VCC
A0 to H0 = 0 V
A1 to H1 = floating
LEDx_0 = 0 V
LEDx1 = floating
SEL = VCC
LP = GND
——±1µA
Ioff(sw_LP) Leakage current through the
switch in LP mode
VCC = 3.6 V; A to H = VCC;
LED1 to LED3 = VCC; A0 to H0,
A1 to H1 = 0V; LEDx_0,
LEDx_1 = 0V
LP = VCC
±10 µA
IOFF(SEL) SEL pin leakage current VCC = 0 V
SEL = 0 to 3.6 V ——±1µA
RON Switch ON resistance(2)
VCC = 3.0 V
VIN = 1.5 to VCC
IIN = -40 mA
—4.06.5Ω
Electrical characteristics STMUX1800E
10/26 Doc ID 16772 Rev 3
RFLAT ON resistance flatness(2), (3)
VCC = 3.0 V
VIN at 1.5 and VCC
IIN = -40 mA
—0.5—Ω
ΔRON
ON resistance match between
channel
ΔRON = RONMAX-RONMIN(2), (4)
VCC = 3.0 V
VIN = 1.5 to VCC
IIN = -40 mA
—0.4 1 Ω
1. Refer to Figure 4: Test circuit for leakage current (IOFF) on page 15.
2. Measured by voltage drop between channels at indicated current through the switch. ON resistance is determined by the
lower of the voltages.
3. Flatness is defined as the difference between the RONMAX and RONMIN of ON resistance over the specified range.
4. ΔRON measured at the same VCC, temperature and voltage level.
Table 7. DC electrical characteristics for Gigabit Ethernet LAN8/16MUX/DEMUX
(VCC = 3.3 V ±10%) (continued)
Symbol Parameter Test condition
Value
Unit-40 to 85 °C
Min. Typ. Max.
CC
STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 11/26
Table 8. DC electrical characteristics for 10/100 Ethernet LAN8/16MUX/DEMUX
(VCC = 3.3 V ±10)
Symbol Parameter Test condition
Value
Unit-40 to 85 °C
Min. Typ. Max.
VIH Voltage input high (SEL, LP) High level guaranteed 2.4 V
VIL Voltage input low (SEL, LP) Low level guaranteed -0.5 0.8 V
VIK Clamp diode voltage (SEL, LP) VCC = 3.6 V
IIN = -18 mA —-0.7-1.2 V
IIH Input high current (SEL, LP) VCC = 3.6 V
VIN = VCC
——±5µA
IIL Input low current (SEL, LP) VCC = 3.6 V
VIN = GND ——±5µA
IOFF(SW)(1)
Leakage current through the
switch common terminals (A to H)
(LED1 to LED3)
VCC = 3.6 V
A to H = VCC
LED1 to LED3 = VCC
A0 to H0 = 0 V
A1 to H1 = floating
LEDx_0 = 0 V
LEDx1 = floating
SEL = VCC
LP = GND
——±1µA
Ioff(sw_LP) Leakage current through the
switch in LP mode
VCC = 3.6 V; A to H = VCC;
LED1 to LED3 = VCC;
A0 to H0,
A1 to H1 = 0 V; LEDx_0, LEDx_1 = 0 V
LP = VCC
±10 µA
IOFF(SEL) SEL pin leakage current VCC = 0 V
SEL = 0 to 3.6 V ——±1µA
RON Switch ON resistance(2)
VCC = 3.0 V
VIN = 1.5 to VCC
IIN = -10 to -30 mA
—4.06.5 Ω
RFLAT ON resistance flatness(2) (3)
VCC = 3.0 V
VIN at 1.5 and VCC
IIN = -10 to -30 mA
—0.5Ω
ΔRON
ON resistance match between
channel
ΔRON = RONMAX-RONMIN(2)(4)
VCC = 3.0 V
VIN = 1.5 to VCC
IIN = -10 to -30 mA
—0.4 1 Ω
1. Refer to Figure 4: Test circuit for leakage current (IOFF) on page 15.
2. Measured by voltage drop between channels at indicated current through the switch. ON resistance is determinate by the
lower of the two voltages.
3. Flatness is defined as the difference between the RONMAX and RONMIN of ON resistance over the specified range.
4. ΔRON measured at the same VCC, temperature and voltage level.
Electrical characteristics STMUX1800E
12/26 Doc ID 16772 Rev 3
Table 9. Capacitance (TA = 25 °C, f = 1 MHz)
Table 10. Power supply characteristics
Table 11. Dynamic electrical characteristics (VCC = 3.3 V ±10%)
Symbol Parameter Test condition
Value
Unit
Min. Typ. Max.
CIN
SEL pin input
capacitance(1)
1. Refer to Figure 5: Test circuit for SEL pin input capacitance (CIN) on page 15.
DC = 0.25 V
AC = 0.5 VPP
f=1MHz
—2 3pF
COFF
Switch off
capacitance(2)
2. Refer to Figure 6: Test circuit for switch off capacitance (COFF) on page 16.
DC = 0.25 V
AC = 0.5 VPP
f=1MHz
—4 5pF
CON
Switch on
capacitance(3)
3. Refer to Figure 7: Test circuit for switch on capacitance (CON) on page 16.
DC = 0.25 V
AC = 0.5 VPP
f=1MHz
—9.511pF
Symbol Parameter Test condition
Value
Unit-40 to 85 °C
Min. Typ. Max.
ICC
Active mode power
supply current
VCC = 3.6 V, VIN = VCC or
GND, LP = GND 150 500 µA
Low power mode
power supply current
VCC = 3.6 V, VIN = VCC or
GND, LP = VCC
—1050µA
Symbol Parameter Test condition
Value
Unit-40 to 85 °C
Min. Typ. Max.
Xtalk Crosstalk(1)
1. Refer to Figure 9: Test circuit for crosstalk measurement (xtalk) on page 18.
RL= 100 Ω
f = 250 MHz —-45—dB
OIRR Off isolation(2)
2. Refer to Figure 10: Test circuit for off isolation measurement (OIRR) on page 19.
RL= 100 Ω
f = 250 MHz —-37—dB
BW -3 dB bandwidth(3)
3. Refer to Figure 8: Test circuit for bandwidth measurement (BW) on page 17.
RL= 100 Ω
0 < VIN 3.6 V —600—MHz
CC
STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 13/26
Table 12. Switching characteristics (TA = 25 °C, VCC = 3.3 V ±10%)
Table 13. ESD performance
Symbol Parameter Test condition
Value
Unit
Min. Typ. Max.
tPD Propagation delay VCC = 3 to 3.6 V 0.25 ns
tPZH,
tPZL
Line enable time, SE
to x to x0 or x to x1 VCC = 3 to 3.6 V 0.5 6.5 15 ns
tPHZ,
tPLZ
Line disable time, SE
to x to x0 or x to x1 VCC = 3 to 3.6 V 0.5 6.5 8.5 ns
tSK(O)
Output skew
between center port
to any other port
VCC = 3 to 3.6 V 0.1 0.2 ns
tSK(P)
Skew between
opposite transition of
the same output
(tPHL, tPLH)
VCC = 3 to 3.6 V 0.1 0.2 ns
Symbol Test condition
Value
Unit
Min. Typ. Max.
ESD
Contact discharge(1)
IEC61000-4-2
1. Refer to Figure 3: Diagram for suggested VCC decoupling on page 14.
—±8—kV
Human body model
(MIL-STD-883) —±15—kV
L) L) 4c 3 GND 4c GND CC (,7 GND (7 GND 1 o o ‘ z z o L') (D u U
Electrical characteristics STMUX1800E
14/26 Doc ID 16772 Rev 3
Figure 3. Diagram for suggested VCC decoupling
1. Applicable for system level ESD test.
2. 100 nF capacitors must be used as local bypass capacitors between the adjacent VCC and GND pairs
(total 7).
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STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 15/26
Figure 4. Test circuit for leakage current (IOFF)
Figure 5. Test circuit for SEL pin input capacitance (CIN)
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Electrical characteristics STMUX1800E
16/26 Doc ID 16772 Rev 3
Figure 6. Test circuit for switch off capacitance (COFF)
Figure 7. Test circuit for switch on capacitance (CON)
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STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 17/26
Figure 8. Test circuit for bandwidth measurement (BW)
1. CL includes probe and jig capacitance.
Frequency response is measured at the output of the ON channel. For example, when
VSEL = 0 and A is the input, the output is measured at A0. All unused analog I/O ports are
left open.
HP8753ES setup:
Average = 4
RBW = 3 kHz
VBIAS = 0.35 V
ST = 2 s
P1 = 0 dBm
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Electrical characteristics STMUX1800E
18/26 Doc ID 16772 Rev 3
Figure 9. Test circuit for crosstalk measurement (xtalk)
1. CL includes probe and jig capacitance.
2. A 50 Ω termination resistor is needed to match the loading of the network analyzer.
Crosstalk is measured at the output of the non-adjacent ON channel. For example, when
VSEL = 0, and B is the input, the output is measured at D. All unused analog input ports are
connected to GND and output ports are left open.
HP8753ES setup:
Average = 4
RBW = 3 kHz
VBIAS = 0.35 V
ST = 2 s
P1 = 0 dBm
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STMUX1800E Electrical characteristics
Doc ID 16772 Rev 3 19/26
Figure 10. Test circuit for off isolation measurement (OIRR)
1. CL includes probe and jig capacitance.
2. A 50 Ω termination resistor is needed to match the loading of the network analyzer.
Off isolation is measured at the output of the OFF channel. For example, when VSEL= 0, and
B is the input, the output is measured at B1. All unused analog input ports are connected to
GND and output ports are left open.
HP8753ES setup:
Average = 4
RBW = 3 kHz
VBIAS = 0.35 V
ST = 2 s
P1 = 0 dBm
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Package mechanical data STMUX1800E
20/26 Doc ID 16772 Rev 3
4 Package mechanical data
ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figure 11. Package outline for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm
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STMUX1800E Package mechanical data
Doc ID 16772 Rev 3 21/26
Table 14. Mechanical data for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm
Symbol
millimeters
Min. Typ. Max.
A 0.700.750.80
A1 0 0.02 0.05
A3 — 0.20 —
b 0.200.250.30
D 3.403.503.60
D2 2 2.05 2.10
E8.9099.10
E2 7.50 7.55 7.60
e — 0.50 —
L 0.300.400.50
figggmgé _ W//%/m
Package mechanical data STMUX1800E
22/26 Doc ID 16772 Rev 3
Figure 12. Footprint recommendation for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm
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STMUX1800E Package mechanical data
Doc ID 16772 Rev 3 23/26
Figure 13. Carrier tape information for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm
1. 10 sprocket hole pitch cumulative tolerance ±0.20.
2520.2 mm. (13") so 4 max —. (measured at hub) 17s :05 (measuved a! may 2A A *3 —, Amman
Package mechanical data STMUX1800E
24/26 Doc ID 16772 Rev 3
Figure 14. Reel information for QFN42 (3.5 x 9 x 0.75) - pitch 0.5 mm
STMUX1800E Revision history
Doc ID 16772 Rev 3 25/26
5 Revision history
Table 15. Document revision history
Date Revision Changes
09-Dec-2009 1 Initial release.
11-Oct-2010 2
Document reformatted, updated Features and “max. low power
mode” in Table 10., replaced VDD by VCC, corrected typo in Figure 1,
Figure 3 to Figure 7.
09-Nov-2011 3 Corrected order code in Table 1, updated Section 2 and Disclaimer,
minor text corrections throughout document.
STMUX1800E
26/26 Doc ID 16772 Rev 3
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