Click here for production status of specific part numbers ... · Phablets Tablets Benefits and...
Transcript of Click here for production status of specific part numbers ... · Phablets Tablets Benefits and...
General DescriptionThe MAX20334 is a 2 x SPDT switch with overvoltage protection intended for use with portable devices. In high-voltage charging solutions, a data line short event to the high-voltage VBUS can result in either charger misdetec-tion or permanent damage to the portable device. The MAX20334 is designed to protect the downstream data line from a high-voltage short or surge event.The device combines low on-capacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications in portable electronics. The MAX20334 features internal positive overvoltage, negative overvoltage, and surge protection. The device handles USB low/full/high-speed signaling and operates from a 2.7V to 5.5V supply.The MAX20334 is available in a 12-bump (1.23mm x 1.63mm) wafer-level package (WLP) and operates over the -40°C to +85°C extended temperature range.
Applications Smart Phones Phablets Tablets
Benefits and Features Distortion-Free, High-Speed Signaling
• Dual SPDT• Signal Range: 0V to 5V• RON: 4Ω (typ)• Bandwidth 600MHz
Flexible System Design• Separate Control for Each Switch Path• EN to Save Supply Current• FLAG Signals Fault Event• 12-Bump WLP (1.23mm x 1.63mm) Package• -40°C to +85°C Operating Temperature Range
Robust and Safety• Positive Overvoltage Protection up to +20.5V• Hot Plug-In Robustness
Ordering Information appears at end of data sheet.
19-100527; Rev 1; 9/19
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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EVALUATION KIT AVAILABLE
(All voltages referenced to GND.)VCC, CSA, CSB, EN, FLAG ....................................-0.5V to +6VCOMA, COMB (Note 1) ......................................-0.5V to +20.5VPA1, PA2, PB1, PB2 ................................................-0.5V to +6VCurrent into all pins ........................................................±100mA
Continuous Power Dissipation (TA = +70°C) WLP (derate 13.73mW/°C above +70°) ....................1098mW
Operating Temperature Range ........................... -40°C to +85°CJunction Temperature ......................................................+150°CStorage Temperature Range ............................ -65°C to +150°CSoldering Temperature (reflow) .......................................+260°C
PACKAGE TYPE: 12 WLPPackage Code W121C1+1Outline Number 21-100286Land Pattern Number Refer to Application Note 1891THERMAL RESISTANCE (FOUR-LAYER BOARD)Junction to Ambient (θJA) 72.8°C/W
(VCC = 2.7V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 4.3V, TA = +25°C) (Note 2)
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
Note 1: Surge capable from -30V to +45V by the surge tester with 2Ω source impedance IEC61000-4-5 modified waveform.
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSSUPPLY OPERATIONOperating Voltage VCC 2.7 5.5 V
Supply Current ICC VIN below OVLO 26 51 µA
Supply OVLO Shutdown Current ICC_O VCOM_ = 6V, VPA_/PB_ = 0V 29 58 µA
Power On Reset VPOR 2.3 VCOMA, COMB, PA1, PA2, PB1, PB2
Positive Overvoltage Trip Level VPOVLO (Note 3)VIN rising 4.6 4.8 5
VVIN falling 4.5
COM_ On Leakage Equivalent Resistance RCOM_ON VCOM_ = 2.5V 3 6.3 15 MΩ
PA_, PB_ Off Leakage Current IP_OFFSwitch open, VCC = 3V, VPA_ = 0V, 2.5V, VCOM_ = 0V, 2.5V -0.1 0.1 µA
COM_ Current Sink VCOM_ = 20V 0.3 mA
COM_ Positive Overvoltage Fault Protection Response Time tFP
VCOM_ = 1V to 10V step, VCC = 2.7V to 5.5V, RPA_ = RPB_ = 1kΩ, (Figure 2) 100 ns
COM_ Positive Overvoltage Fault Protection Recovery Time tFPR
VCOM_ = 10V to 1V step, VCC = 2.7V to 5.5V, RPA_ = RPB_ = 1kΩ, (Figure 2) 80 µs
Package Information
(VCC = 2.7V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 4.3V, TA = +25°C) (Note 2)
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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Electrical Characteristics (continued)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSCOMA to PA1/PA2, COMB to PB1/PB2Analog Signal Range VCOM_ 0 5 VInternal SWPOS Regulator VSWPOS VCC = 2.7V 5 V
On-Resistance RON VCC = 3V, ICOM_ = 10mA, TA = +25°C 4 8 Ω
On-Resistance Match Between Channels ∆RON
VCC = 3V, VP_ = 0V, ICOM_ = 10mA (Note 4, 5) 0.2 Ω
On-Resistance Flatness RFLATVCC = 3V, ICOM_ = 10mA , VCOM_ = 0V to 1V (Note 6) 0.3 Ω
Turn-On Time (Figure 3) tON
VPA_/VPB_ = 1.5V, RL = 50Ω, From an CSA/CSB control 45 90
µsVPA_/VPB_ = 1.5V, RL = 50Ω, From an EN control 90 120
Turn-Off Time (Figure 3) tOFFVPA_/VPB_ = 1.5V, RL = 50Ω, EN control or CSA/CSB control 0.5 10 µs
Output Skew Same Switch tSK(P) Figure 4 40 psOutput Skew Between Switch tSK(O) Figure 4 40 ps
Break-Before-Make Time Delay tDRL = 50Ω, time delay between one side of the switch opening and the other side closing
20 µs
Power On Reset Time tPOR 0.4 0.7 ms
COM_ On Capacitance CCOM_ONVCOM_ = 0.5VPP, DC bias = 0V, f = 1MHz 10 pF
DIGITAL SIGNAL (FLAG, EN, CSA, CSB)FLAG Output Voltage Low VOL IFLAG = 1mA 0.4 VFLAG Output Leakage ILEAK VFLAG = 5.5V -1 1 µAInput Voltage High VIH EN, CSA, CSB 1.4 VInput Voltage Low VIL EN, CSA, CSB 0.4 VInput Leakage ILEAK EN, CSA, CSB = 5.5V or GND -1 1 µAAC CHARACTERISTICS (NOTE 4)
-3dB Bandwidth BW VCOM_ = 0dBm, RS = RL = 50Ω, Figure 5 600 MHz
Off Isolation f = 100kHz, VCOM_ = 1VRMS, RL = 50Ω, Figure 5 -95 dB
Crosstalk (Note 7) f = 100kHz, VCOM_ = 1VRMS, RL = 50Ω, Figure 5 -80 dB
Note 2: All devices are 100% production tested at TA = +25°C. Specifications over the operating temperature range are guaranteed by design.
Note 3: The switch turns off for voltages above VPOVLO protecting downstream circuits in case of a fault condition.Note 4: Guaranteed by design.Note 5: ∆RON(MAX) = | RON(CH1) – RON(CH2) |Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over specified
analog signal ranges.Note 7: Between two switches.Note 8: Strike applied through 1m cable, 12nH peaking inductors installed in series with COMx pins.
(VCC = 2.7V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 4.3V, TA = +25°C) (Note 2)
Figure 1. Timing Diagram
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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Electrical Characteristics (continued)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSTHERMAL PROTECTIONThermal Shutdown TSHDN 150 °CThermal Hysteresis THYST 20 °CESD PROTECTION
Human Body Model COMA, COMB ±15 kV
IEC61000-4-2 Contact Discharge
COMA, COMB (Note 8) ±8 kV
IEC61000-4-2 Air Gap COMA, COMB ±15 kV
Human Body Model All Other Pins ±2 kV
COM_
VPOVLO
PA_/PB_
tOFF tON
EN
FLAG
VPOVLO
VIHVCC
Figure 2. Fault Protection Timing Diagram
Figure 3. Switching Timing Diagram
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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VCC = 4.3V
VCOM_
VPOVLO
VPB_
VPA_
tFP tFPR
10V
1V
1V0V
tr < 5nstf < 5ns
50%VIL
LOGICINPUT
RL
COM_
GND
CONTROL
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VIN ( RL ) RL + RON
VIN
VIH
tOFF
0V
PA_OR PB_
0.9 x V0UT 0.1 x VOUT
tON
VOUT
SWITCHOUTPUT
LOGICINPUT
CONTROL DEPENDS ON SWITCH CONFIGURATION;INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
VCC
CL
VCC
VOUT
MAX20334
Figure 4. Output Skew Timing Diagram
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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IN+
IN-
CSA ORCSB
OUT+
OUT-
VIN+
VIN-
VOUT+
VOUT-
PA1 ORPA2
PB1 ORPB2
COMA
MAX20334
COMB
0V
V+
0V
V+
0V
V+
0V
V+
tPLHX tPHLX
tINRISE
tOUTRISE tOUTFALL
RISE-TIME PROPAGATION DELAY = tPLHX OR tPLHYFALL-TIME PROPAGATION DELAY = tPHLX OR tPHLYtSK(O) = |tPLHX - tPLHY| OR |tPHLX - tPHLY|tSK(P) = |tPLHX - tPHLX| OR |tPLHY - tPHLY|
50%
50%
50%
50%
90%
10% 10%
90%
10% 10%
RL
RL
50%
50%
50%
50%
tINFALL
90%
90%
tPHLY tPLHY
RS
RS
LOGICINPUT
Figure 5. On-Loss, Off-Isolation, and Crosstalk
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" PA_ OR PB_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" PA_ OR PB_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
VCC
VOUT
VCC
PA1
COMA
MAX20334
PB1*
VIN
OFF-ISOLATION = 20log VOUT
VIN
ON-LOSS = 20log VOUT
VIN
CROSSTALK = 20log VOUT
VIN
NETWORKANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
0.1µF
50Ω
GND
*FOR CROSSTALK THIS PIN IS PA2. PB2 AND COMB ARE OPEN.MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" PA_ OR PB_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" PA_ OR PB_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
VCC
VOUT
VCC
PA1
COMA
MAX20334
PB1*
VIN
OFF-ISOLATION = 20log VOUT
VIN
ON-LOSS = 20log VOUT
VIN
CROSSTALK = 20log VOUT
VIN
NETWORKANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
0.1µF
50Ω
GND
*FOR CROSSTALK THIS PIN IS PA2. PB2 AND COMB ARE OPEN.
(VCC = 4.3V, TA = +25°C, unless otherwise noted.)
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MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
Typical Operating Characteristics
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
NORM
ALIZ
ED P
A_ O
N-RE
SIST
ANCE
COMA VOLTAGE (V)
NORMALIZED PA_ ON-RESISTANCE vs. COMA VOLTAGE
toc04
IPA_ = 10mA, NORMALIZED TO VCC = 4.3V, TA = 25ºC, VCOMA = 1V
VCC = 2.7V, TA = +85°CVCC = 5.5V, TA = +85°C
VCC = 4.3V, TA = +85°C
VCC = 2.7V, TA = +25°C
VCC = 5.5V, TA = +25°C
VCC = 4.3V, TA = +25°C
VCC = 4.3V, TA = -40°CVCC = 5.5V, TA = -40°C
VCC = 2.7V, TA = -40°C
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
NORM
ALIZ
ED P
B_ O
N-RE
SIST
ANCE
COMB VOLTAGE (V)
NORMALIZED PB_ ON-RESISTANCE vs. COMB VOLTAGE
toc05
IPA_= 10mA, NORMALIZED TO VCC = 4.3V, TA = 25ºC, VCOMA = 1V
VCC = 2.7V, TA = +85°CVCC = 4.3V, TA = +85°C
VCC = 5.5V, TA = +85°C
VCC = 2.7V, TA = +25°C
VCC = 5.5V, TA = +25°C
VCC = 4.3V, TA = +25°C
VCC = 5.5V, TA = -40°C
VCC = 2.7V, TA = -40°CVCC = 4.3V, TA = -40°C
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40 -15 10 35 60 85
PA_
OFF
LEA
KAG
E CU
RREN
T (n
A)
TEMPERATURE (°C)
PA_ OFF LEAKAGE CURRENT vs. TEMPERATURE
toc06
VEN = VCC = 3V
VPA_ = 2.5V
VPA_ = 3.6V
0
5
10
15
20
25
30
35
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPP
LY C
URRE
NT (
µA)
SUPPLY VOLTAGE (V)
VCC SUPPLY CURRENT vs. SUPPLY VOLTAGE
toc01
TA = +85°C
TA = -40°C
VEN = 0V, VCOM_ = 0V
TA = +25°C
0
5
10
15
20
25
30
35
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPP
LY C
URRE
NT O
VLO
SHU
TDO
WN
(µA)
SUPPLY VOLTAGE (V)
VCC SUPPLY CURRENT OVLO SHUTDOWN vs. SUPPLY VOLTAGE
toc02
TA = +85°C
TA = -40°C
TA = +25°C
VEN = 0V, VCOM_ = 6V 0
5
10
15
20
25
30
35
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPP
LY S
HUTD
OW
N CU
RREN
T (µ
A)
SUPPLY VOLTAGE (V)
VCC SUPPLY SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
toc03
TA = -40°C
TA = +85°C
TA = +25°C
VEN = VCC, VCOM_ = 0V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40 -15 10 35 60 85
PB_
OFF
LEA
KAG
E CU
RREN
T (n
A)
TEMPERATURE (°C)
PB_ OFF LEAKAGE CURRENT vs. TEMPERATURE
toc07
VEN = VCC = 3V
VPB_ = 2.5V
VPB_ = 3.6V
4.0
4.5
5.0
5.5
6.0
6.5
7.0
-40 -15 10 35 60 85
COM
_ O
N LE
AKAG
E EQ
UIVA
LENT
RE
SIST
ANCE
(M
Ω)
TEMPERATURE (°C)
COM_ ON LEAKAGE EQUIVALENT RESISTANCE vs. TEMPERATURE
toc08
VCC = 4.3V
VCOM_ = 3.6V
VCOM_ = 2.5V
(VCC = 4.3V, TA = +25°C, unless otherwise noted.)
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MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
5V/div
5V/div
5V/div
toc15
40ns
10V
VCOM_
COM_ OVP WAVEFORM
1V
RPA_/PB_ = 1kΩ
VPA_/PB_
VFLAG
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
DIF
FER
EN
TIA
L S
IGN
AL
(V)
TIME (ns)
EYE DIAGRAMtoc16
Typical Operating Characteristics (continued)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
TURN
-OFF
TIM
E (µ
s)
SUPPLY VOLTAGE (V)
PA_/PB_ TURN-OFF TIME vs. SUPPLY VOLTAGE
toc12
FROM CSB CONTROL
FROM EN CONTROL
RL = 50Ω
toc12
FROM CSB CONTROL
RL = 50Ω
toc12
FROM CS_ CONTROL
RL = 50Ω
4.70
4.74
4.78
4.82
4.86
4.90
-40 -15 10 35 60 85
COM
_ PO
SITI
VE O
VLO
THR
ESHO
LD (V
)
TEMPERATURE (°C)
COM_ OVLO THRESHOLD vs. TEMPERATURE
toc09
VIN RISING
VCC = 2.7V, 3.3V, 4.3V, 5.5V
VIN FALLING
30
40
50
60
70
80
90
100
110
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
TURN
-ON
TIM
E (µ
s)
SUPPLY VOLTAGE (V)
PA_ TURN-ON TIME vs. SUPPLY VOLTAGE
toc10
FROM CSA CONTROL
FROM EN CONTROL
RL = 50Ω
30
40
50
60
70
80
90
100
110
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
TURN
-ON
TIM
E (µ
s)
SUPPLY VOLTAGE (V)
PB_ TURN-ON TIME vs. SUPPLY VOLTAGE
toc11
FROM CSB CONTROL
FROM EN CONTROL
RL = 50Ω
0.001
0.010
0.100
1.000
10.000
20 200 2000 20000
THD+
N (%
)
FREQUENCY (Hz)
VCOM_ = 1VPP, DC BIAS 0.5V
toc13
RL = 100Ω
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.1 1 10 100 1000
MAG
NITU
DE (d
B)
FREQUENCY (MHz)
ON LOSS
FREQUENCY RESPONSEtoc14
CROSSTALK
OFF ISOLATION
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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Bump Configuration
Bump Description
TOP VIEW(BUMPS ON BOTTOM) MAX20334
+1 2 3 4
A
B
C
CSA
COMB
COMA
FLAG
VCC
CSB
GND
EN
PB2
PA2
PB1
PA1
BUMP NAME FUNCTION
A1 CSA Channel Select Input for COMA. When CSA is low, COMA is connected to PA1. When CSA is high, COMA is connected to PA2.
A2 COMB Data Line B Input from External USB PortA3 COMA Data Line A Input from External USB PortA4 FLAG Open-Drain Flag Output. FLAG is driven low when OVP or thermal shutdown occurs.B1 VCC Supply Voltage Input. Bypass VCC with a 0.1µF ceramic capacitor as close to the device as possible.
B2 CSB Channel Select Input for COMB. When CSB is low, COMB is connected to PB1. When CSB is high, COMB is connected to PB2.
B3 GND GroundB4 EN Active-Low Enable InputC1 PB2 Data Line 2 to COMBC2 PA2 Data Line 2 to COMAC3 PB1 Data Line 1 to COMBC4 PA1 Data Line 1 to COMA
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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Functional Diagram
MAX20334 VCC
CHARGE PUMP CONTROLVBG REFERENCE
LOGIC CONTROL
FLAG
EN
CSA
CSB
PA1
PB1
PA2
PB2
VREF
VREF
DISABLE
DISABLE
HIGH ESD
GND
COMA
COMB
HIGH ESD
Detailed DescriptionThe MAX20334 is a high ESD and surge-protected, dual-SPDT switch that operates from a 2.7V to 5.5V supply and are designed to multiplex USB 2.0 high-speed signals and various analog signals. The switch combines low on-capacitance (CON) and low on-resistance (RON) neces-sary for high-performance switching applications, while withstanding the overvoltage event. The device meets the requirements for USB 2.0 signaling.
Analog SignalThe MAX20334 is bidirectional, allowing PA_, PB_, and COM_ to be configured as either inputs or outputs.The device can handle analog signals 0V to 5V.
Switch ControlThe MAX20334 switches are individually controlled by CSA and CSB. When EN is high, the switches are open and the device is in a low supply current mode. (Table 1)
FLAG OutputThe FLAG is an open-drain output. It asserts low when there is an overvoltage, or a thermal shutdown occurs.
Thermal Shutdown ProtectionThe MAX20334 features thermal shutdown protection to protect the device from overheating. The device turns off when the junction temperature exceeds +150°C (typ). The device exits thermal shutdown and resumes normal operation after the junction temperature cools by 20°C (typ). During thermal shutdown, the switches are open.
Application InformationExtended ESDESD protection structures are incorporated on all pins to protect against electrostatic discharges up to ±2kV (Human Body Model) encountered during handling and
assembly. COMA and COMB are further protected against ESD up to ±15kV (Human Body Model), ±15kV (Air Gap Discharge method described in IEC 61000-4-2), and ±8kV (Contact Discharge method described in IEC61000-4-2) without damage. Note that, if PA_ and PB_ are used as inputs and require higher than ±2kV, additional ESD pro-tection is needed.The ESD structures withstand high ESD, both in normal operation and when the device is powered down. After an ESD event, the MAX20334 continues to function without latchup.
ESD Test ConditionESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results.
Human Body ModelFigure 6 shows the Human Body Model, while Figure 7 shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest that is then discharged into the device through a 1.5kΩ resistor.
IEC 61000-4-2The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The major difference between tests performed using the Human Body Model and those using IEC 61000-4-2 is the higher peak current in IEC 61000-4-2. This is due the series resistance being lower in the IEC 61000-4-2 model. Hence, the ESD withstand voltage measured to IEC 61000-4-2 is generally lower than that measured using the Human Body Model. Figure 8 shows the IEC 61000-4-2 model, while Figure 9 shows the current waveform for the IEC 61000-4-2 ESD Contact Discharge test.
Table 1. Functional Truth Table
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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EN0 1
[CSA:CSB] [CSA:CSB]00 01 10 11 D.C.
COMA = PA1 PA1 PA2 PA2 OPENCOMB = PB1 PB2 PB1 PB2 OPEN
Figure 6. Human Body ESD Test Model
Figure 7. Human Body Current Waveform
Figure 8. IEC 61000-4-2 ESD Test Model
Figure 9. IEC 61000-4-2 ESD Generator Current Waveform
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
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CHARGE-CURRENT-LIMIT RESISTOR
DISCHARGERESISTANCE
STORAGECAPACITOR
Cs100pF
RC1MΩ
RD1.5kΩ
HIGH- VOLTAGE
DCSOURCE
DEVICEUNDERTEST
IP 100%90%
36.8%
tRL TIMEtDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING(NOT DRAWN TO SCALE)
IR
10%0
0
AMPERES
CHARGE-CURRENT-LIMIT RESISTOR
DISCHARGERESISTANCE
STORAGECAPACITOR
CS150pF
RC50MΩ TO 100MΩ
RD330Ω
HIGH- VOLTAGE
DCSOURCE
DEVICEUNDERTEST
tR = 0.7ns TO 1ns30ns
60ns
t
100%90%
10%
IPEAK (AMPS)
+Denotes a lead(Pb)-free/RoHS-compliant package.T = Tape and reel.
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
www.maximintegrated.com Maxim Integrated 14
Typical Application Circuit
MAX14699VBUS OVP
USB TYPE-CCONNECTOR
VBUS
D+
D-
GNDMAX20334
AP
PMIC
CHGIN BYP
CHGLX
SYS
BATT
20 µF
VCC
FLAGEN
CSACSBPA1PB1PA2PB2
COMA
COMB
VIO
PORT CONTROL
AP USB PORT 1
AP USB PORT 2
GND
1 µF0.1 µF
Ordering InformationChip InformationPROCESS: BiCMOS
PART TOP MARK
TEMP RANGE
PIN-PACKAGE
MAX20334EWC+T AEI -40°C TO +85°C 12 WLP
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2019 Maxim Integrated Products, Inc. 15
MAX20334 Overvoltage and Surge-Protected Dual SPDT Data Line Switch
Revision HistoryREVISIONNUMBER
REVISIONDATE DESCRIPTION PAGES
CHANGED0 4/19 Initial release —1 9/19 Updated Electrical Characteristics table, Extended ESD section 4, 12
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.