MAX4551ESE+ ,±15kV ESD-Protected, Quad, Low-Voltage, SPST Analog SwitchesApplications MAX4551CSE 0°C to +70°C 16 Narrow SOMAX4551CPE 0°C to +70°C 16 Plastic DIPBattery-Oper ..
MAX4552CEE+ ,±15kV ESD-Protected, Quad, Low-Voltage, SPST Analog SwitchesFeaturesThe MAX4551/MAX4552/MAX4553 are quad, low-volt-♦ ±15kV ESD Protection per IEC 1000-4-2age, ..
MAX4552CSE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesFeaturesThe MAX4551/MAX4552/MAX4553 are quad, low-volt-' ±15kV ESD Protection per IEC 1000-4-2age, ..
MAX4552EEE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesApplications MAX4551CSE 0°C to +70°C 16 Narrow SOMAX4551CPE 0°C to +70°C 16 Plastic DIPBattery-Oper ..
MAX4552ESE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesFeaturesThe MAX4551/MAX4552/MAX4553 are quad, low-volt-' ±15kV ESD Protection per IEC 1000-4-2age, ..
MAX4553CPE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesMAX4551/MAX4552/MAX455319-1391; Rev 0; 10/98±15kV ESD-Protected, Quad, Low-Voltage, SPST Analog Swi ..
MAX8643ETG+ ,3A, 2MHz Step-Down Regulator with Integrated SwitchesELECTRICAL CHARACTERISTICS(V = V = 3.3V, V = 0.5V, T = -40°C to +85°C. Typical values are at T = +2 ..
MAX8643ETG+T ,3A, 2MHz Step-Down Regulator with Integrated Switchesfeatures fixed-frequency PWM mode INoperation with a switching frequency range of 500kHz♦ Soft-Star ..
MAX8645XETI , 1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN
MAX8645XETI+ ,1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFNApplicationsProtectionCamera Phones and Smartphones♦ 28-Pin TQFN, 4mm x 4mm PackageBacklighting and ..
MAX8645XETI+T ,1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFNELECTRICAL CHARACTERISTICS(V = 3.6V, V = V = 0V, ENM1 = ENM2 = ENF = IN, R = R = 6.8kΩ, P1 = P2 = u ..
MAX8645YETI , 1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN
MAX4551ESE+-MAX4552CEE+
±15kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches
General DescriptionThe MAX4551/MAX4552/MAX4553 are quad, low-volt-
age, single-pole/single-throw (SPST) analog switches.
Each switch is protected against ±15kV electrostatic
discharge (ESD) shocks, without latchup or damage.
On-resistance (100Ωmax) is matched between switch-
es to 4Ωmax, and is flat (8Ωmax) over the specified
signal range. Each switch can handle Rail-to-Rail®ana-
log signals. The off-leakage current is only 1nA at
+25°C and 10nA at +85°C.
The MAX4551 has four normally closed (NC) switches,
and the MAX4552 has four normally open (NO) switch-
es. The MAX4553 has two NC and two NO switches.
These CMOS switches can operate with dual power
supplies ranging from ±2V to ±6V or a single supply
between +2V and +12V. They are fully specified for sin-
gle +2.7V operation.
All digital inputs have +0.8V and +2.4V logic thresh-
olds, ensuring TTL/CMOS-logic compatibility when
using ±5V or a single +5V supply.
________________________ApplicationsBattery-Operated Equipment
Data Acquisition
Test Equipment
Avionics
Audio Signal Routing
Networking
____________________________Features±15kV ESD Protection per IEC 1000-4-2+2V to +12V Single Supply
±2V to ±6V Dual Supplies120ΩSignal Paths with ±5V SuppliesLow Power Consumption: <1μW4 Separately Controlled SPST SwitchesRail-to-Rail Signal HandlingPin-Compatible with Industry-Standard
DG211/DG212/DG213TTL/CMOS-Compatible Inputs with Dual ±5V or
Single +5V Supply5kV ESD-Protected, Qua
Low-Voltage, SPST Analog Switche19-1391; Rev 0; 10/98
Ordering InformationSWITCHES SHOWN FOR LOGIC "0" INPUT
QSOP/SO/DIPMAX4552
LOGICSWITCH
OFF
TOP VIEW
QSOP/SO/DIPMAX4551
LOGICSWITCH
OFF
QSOP/SO/DIPMAX4553
LOGICSWITCHES
1, 4
OFF
SWITCHES
2, 3
OFF
IN2
COM2
NC2V-
NO1
COM1
IN1
MAX4553N.C.
NC3
COM3
IN3IN4
COM4
NO4
GND
IN2
COM2
NC2V-
NC1
COM1
IN1
MAX4551N.C.
NC3
COM3
IN3IN4
COM4
NC4
GND
IN2
COM2
NO2V-
NO1
COM1
IN1
MAX4552N.C.
NO3
COM3
IN3IN4
COM4
NO4
GND
N.C. = NOT CONNECTED
Pin Configurations/Functional Diagrams/Truth Tables
Ordering Information continued at end of data sheet.*Contact factory for dice specifications.
PART
MAX4551CEEMAX4551CSE
MAX4551CPE0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGEPIN-PACKAGE16 QSOP
16 Narrow SO
16 Plastic DIP
MAX4551C/D0°C to +70°CDice*
MAX4551EEE
MAX4551ESE-40°C to +85°C
-40°C to +85°C16 QSOP
16 Narrow SO
MAX4551EPE-40°C to +85°C16 Plastic DIP
5kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +5V, ±10%, V- = -5V, ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Note 1:Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
Voltages Referenced to GND
V+.....................................................................-0.3V to +13.0V.....................................................................-13.0V to +0.3V
V+ to V-............................................................-0.3V to +13.0V
All Other Pins (Note 1)..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±10mA
Peak Current into Any Terminal
(pulsed at 1ms,10% duty cycle)...................................±20mA
ESD per Method 3015.7 (IN_, COM_, V+, V-, GND).......>2500V
IEC 1000-4-2 (NO_, NC_)..................................................±15kV
Continuous Power Dissipation (TA= +70°C)
QSOP (derate 9.52mW/°C above +70°C)....................762mW
Narrow SO (derate 8.70mW/°C above +70°C)............696mW
Plastic DIP (derate 10.53mW/°C above +70°C)..........842mW
Operating Temperature Ranges
MAX455_C_E......................................................0°C to +70°C
MAX455_E_E...................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
V+ = 5.5V, V- = -5.5V,
VCOM_= ±4.5V
V+ = 5.5V, V- = -5.5V,
VCOM_= ±4.5V, VNO_= 4.5V
V+ = 5V, V- = -5V, VNO_VNC_= +3V, 0, -3V
V+ = 5.5V, V- = -5.5V,
VCOM_= 4.5V, VNO_= ±4.5V
V+ = 5V, V- = -5V, VNO_
or VNC_= ±3V, ICOM_= 1mA
V+ = 5V, V- = -5V, VNO_
or VNC_= ±3V, ICOM_= 1mA
CONDITIONSC, EICOM_(ON)COM_ On-Leakage Current
(Note 6)-20200.012ICOM_(OFF)COM_ Off-Leakage Current
(Note 6)-1010INO_(OFF),
INC_(OFF)
NO_, NC_ Off-Leakage Current
(Note 6)0.011V-V+VCOM_, VNO_,
VNC_
Analog Signal Range
(Note 3)10RFLAT(ON)
COM_ to NO_, COM_ to NC_
On-Resistance Flatness
(Note 5)85ΔRON
COM_ to NO_, COM_ to NC_
On-Resistance Match Between
Channels (Note 4)120Ω140RONCOM_ to NO_, COM_ to NC_
On-Resistance4
UNITSMINTYPMAX(Note 2)
SYMBOLPARAMETERC, E
+25°C
C, E
C, E
+25°C
+25°C
C, E
+25°C
C, E
+25°C
+25°C
0.011
C, E-1010
ANALOG SWITCHStresses 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.
5kV ESD-Protected, Quad,Low-Voltage, SPST Analog Switche
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +5V, ±10%, V- = -5V, ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Channel-to-Channel Crosstalk
(Note 8)VCT
C, EVIN_= 0.8V or 2.4VμA-10.031IINH_, IINL_IN_ Input Current Logic High
or Low= 50Ω, CL= 15pF,
VN_= 1VRMS, f = 100kHz,
Figure 5
+25°C< -90
+25°C70110
Turn-On Time
CONDITIONSC, E
tON
C, E
VCOM_= ±3V, V+ = 5V,
V- = -5V, Figure 11.60.8VIN_LIN_ Input Logic Threshold Low2.41.6VIN_HIN_ Input Logic Threshold High
C, E125ns
+25°C5090Turn-Off TimetOFFVCOM_= ±3V, V+ = 5V,
V- = -5V, Figure 1C, E100ns
Break-Before-Make Time Delay
(MAX4553 Only)tBBMVCOM_= ±3V, V+ = 5V,
V- = -5V, Figure 2+25°C520ns
Charge Injection (Note 3)QCL= 1nF, VNO_= 0, RS= 0,
Figure 3+25°C25pC
NO_, NC_ Off-CapacitanceCN_(OFF)VNO_= GND, f = 1MHz,
Figure 6+25°C3.5pF
COM_ Off-CapacitanceCCOM_(OFF)VCOM_= GND, f = 1MHz,
Figure 6+25°C3pF
COM_ On-CapacitanceCCOM_(ON)VCOM_= VNO_= GND,
f = 1MHz, Figure 7+25°C10pF
Off-Isolation (Note 7)
UNITSMINTYPMAX(Note 2)
SYMBOLPARAMETERVISO= 50Ω, CL= 15pF,
VN_= 1VRMS, f = 100kHz,
Figure 4
+25°C< -90dB
Power-Supply RangeV+, V-C, E±2±6V
+25°C-10.051V+ Supply CurrentI+V+ = 5.5V, all VIN_= 0 or V+C, E-11μA
+25°C-10.051V- Supply CurrentI-V- = -5.5VC, E-11μA
+25°C±8Contact Discharge IEC 1000-4-2+25°C±15On NC_ and NO_ Pins
per IEC 801-2Air Discharge IEC 1000-4-2
+25°C±15Human Body Model
+25°C±2.5All PinsMIL-STD-883C Method 3015kV
SWITCH DYNAMIC CHARACTERISTICS
LOGIC INPUT
ESD PROTECTION
POWER SUPPLY
5kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches+25°C
Charge Injection (Note 3)
(Note 3)
COM_ to NO_, COM_ to NC_
On-Resistance
RONV+ = 5V, VCOM_= 3.5V,
ICOM_= 1mAC, E180Ω= 1nF, VNO_= 0, RS= 0,
Figure 3+25°C15
+25°C26
COM_ to NO_, COM_ to NC_
On-Resistance Match Between
Channels (Note 4)
CONDITIONSC, E
ΔRONV+ = 5V, VCOM_= 3.5V,
ICOM_= 1mA
1151600V+VCOM_, VNO_,
VNC_Analog Signal Range
C, E8Ω
+25°C-10.011
C, E-1010
NO_, NC_ Off-Leakage Current
(Notes 6, 9)
INO_(OFF),
INC_(OFF)
V+ = 5.5V; VCOM_= 1V, 4.5V;
VN_= 4.5V, 1VnA
+25°C-10.011
C, E-1010
COM_ Off-Leakage Current
(Notes 6, 9)ICOM_(OFF)V+ = 5.5V; VCOM_= 1V, 4.5V;
VN_= 4.5V, 1VnA
+25°C-20.012
C, E,-2020
COM_ On-Leakage Current
(Notes 6, 9)ICOM_(ON)V+ = 5.5V; VCOM_= 4.5V, 1VnA
IN_ Input Logic Threshold HighVIN_HC, E2.41.6V
IN_ Input Logic Threshold LowVIN_LC, E1.60.8V
UNITSMINTYPMAX(Note 2)
SYMBOLPARAMETERIN_ Input Current Logic High
or LowIINH_, IINL_VIN_= 0.8V or 2.4VC, E-11μA
+25°C100160Turn-On TimetONVCOM_= 3V, V+ = 5V,
Figure 1C, E170ns
+25°C80140Turn-Off TimetOFFVCOM_= 3V, V+ = 5V,
Figure 1C, E150ns
+25°C530Break-Before-Make Time Delay
(MAX4553 Only)tBBMVCOM_= 3V, V+ = 5V,
Figure 2ns
+25°C-10.051V+ Supply CurrentI+V+ = 5.5V, all VIN_= 0 or V+C, E-11μA
+25°C±8
ELECTRICAL CHARACTERISTICS—Single +5V Supply(V+ = +5V, ±10%, V- = -5V, ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Contact Discharge IEC 1000-4-2On NC_ and NO_ Pins
per IEC 801-2Human Body Model
+25°C±15Air Discharge IEC 1000-4-2
+25°C±15All PinsMIL-STD-883C Method 3015+25°C±2.5
ANALOG SWITCH
LOGIC INPUT
POWER SUPPLY
ESDPROTECTION
SWITCH DYNAMIC CHARACTERISTICS
5kV ESD-Protected, Quad,Low-Voltage, SPST Analog Switche
Note 2:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 3:Guaranteed by design.
Note 4:ΔRON= ΔRON(MAX)- ΔRON(MIN).
Note 5:Resistance flatness is defined as the difference between the maximum and minimum on-resistance values, as measured
over the specified analog signal range.
Note 6:Leakage parameters are 100% tested at maximum rated temperature, and guaranteed by correlation at TA= +25°C.
Note 7:Off-isolation = 20log10 [ VCOM_/ (VNC_or VNO_) ], VCOM_= output, VNC_or VNO_= input to off switch.
Note 8:Between any two switches.
Note 9:Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
ELECTRICAL CHARACTERISTICS—Single +3V Supply(V+ = +2.7V to +3.6V, V- = 0, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
+25°C
Charge Injection
COM_ to NO_, COM_ to NC_
On-Resistance
RONV+ = 2.7V, VCOM_= 1.0V,
ICOM_= 0.1mAC, E500Ω
IN_ Input Logic Threshold HighVIN_HC, E2.01.1V
IN_ Input Logic Threshold Low
CONDITIONSC, E
VIN_L= 1nF, VNO_= 0, RS= 0,
Figure 3+25°C
2004005pC0V+VCOM_, VNO_,
VNC_
Analog Signal Range
(Note 3)
C, E1.10.5V
IN_ Input Current Logic High
or LowIINH_, IINL_VIN_= 0.8V or 2.4VC, E-10.031μA
+25°C190350Turn-On TimetONVCOM_= 1.5V, V+ = 2.7V,
Figure 1C, E400ns
+25°C160250Turn-Off TimetOFFVCOM_= 1.5V, V+ = 2.7V,
Figure 1C, E300ns
+25°C1050Break-Before-Make Time Delay
(MAX4553 Only)tBBMVCOM_= 1.5V, V+ = 3.6V,
Figure 2ns
+25°C-10.051V+ Supply Current
UNITSMINTYPMAX(Note 2)
SYMBOLPARAMETERV+ = 3.6V, all VIN_= 0 or V+C, E -11μA
SWITCH DYNAMIC CHARACTERISTICS(Note 4)
POWER SUPPLY+25°C±8Contact Discharge IEC 1000-4-2
+25°C±15
+25°C±15Human Body Model
On NC_ and NO_ Pins
per IEC 801-2kVAir Discharge IEC 1000-4-2
+25°C±2.5MIL-STD-883C Method 3015All PinskV
LOGIC INPUT
SWITCH DYNAMIC CHARACTERISTICS
POWER SUPPLY
ESD PROTECTION
ANALOG SWITCH
5kV ESD-Protected, Quad,Low-Voltage, SPST Analog Switches
Typical Operating Characteristics(V+ = +5V, V- = -5V, GND = 0, TA = +25°C, unless otherwise noted.)
ON-RESISTANCE
vs. VCOM (DUAL SUPPLIES)
AX4551-01
VCOM (V)
(W
V+ = +2V
V- = -2V
V+ = +3V
V- = -3VV+ = +4V
V- = -4V
V+ = +5V
V- = -5V-2-40246
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
(DUAL SUPPLIES)AX4551-02
VCOM (V)
(W
TA = +85°C
TA = +25°C
TA = 0°C
TA = -40°CV+ = +5V
V- = -5V
ON-RESISTANCE
vs. VCOM (SINGLE SUPPLY)
AX4551-03
VCOM (V)
(WV+ = +3.3V
V+ = +5V
V+ = +2.7V
V- = 0
ON-RESISTANCE
vs. VCOM AND TEMPERATURE
(SINGLE SUPPLY)
AX4551-04
VCOM (V)
(W
TA = +25°C
TA = 0°C
TA = -40°C
TA = +85°C
V+ = +5V
V- = 0
SCR HOLDING CURRENT
vs. TEMPERATURE
AX4551-07
TEMPERATURE (°C)
(m
IH-
IH+
10n
0.1p
ON- AND OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4551-05
TEMPERATURE (°C)
(A100125
100p
10p
ON-LEAKAGE
OFF-LEAKAGE
CHARGE INJECTION
vs. VCOM
AX4551-06
VCOM (V)
(p
V+ = +5V
V- = 0
V+ = +5V
V- = -5V
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
AX4551-08
SUPPLY VOLTAGE (V+, V-)
, tO
F (n
tON
tOFF
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
AX4551-09
TEMPERATURE (°C)
, tO
(n
tOFF
tON
5kV ESD-Protected, Quad,Low-Voltage, SPST Analog Switche
Pin DescriptionPOWER-SUPPLY CURRENT
vs. TEMPERATURE
AX4551-10
TEMPERATURE (°C)
,
I-
(n40
TOTAL HARMONIC DISTORTION
vs. FREQUENCYAX4551-11
FREQUENCY (Hz)
(%
0.11k10k100k101002M
V+ = +5V
V- = -5V
600Ω IN and OUT
100m500m
100k1m10m
FREQUENCY RESPONSEAX4551-12
FREQUENCY (Hz)
(d
INSERTION LOSS
OFF-ISOLATION
ON-PHASE
50Ω IN/OUT
_____________________________Typical Operating Characteristics (continued)(V+ = +5V, V- = -5V, GND = 0, TA= +25°C, unless otherwise noted.)
NAMEFUNCTION1, 16, 9, 8IN1–IN4Logic-Control Digital Inputs
2, 15, 10, 7COM1–COM4Analog Switch Common* Terminals
PIN3, 14, 11, 6NC1–NC4Analog Switch Normally Closed TerminalsV-Negative Analog Supply-Voltage Input. Connect to GND for single-
supply operation.
1, 16, 9, 8
2, 15, 10, 7V+Positive Analog and Digital Supply Voltage Input. Internally con-
nected to substrate.N.C.No Connection. Not internally connected.
1, 16, 9, 8
2, 15, 10, 7
NO1–NO4
MAX4551MAX4552MAX4553GNDGround. Connect to digital ground. (Analog signals have no ground
reference; they are limited to V+ and V-.)
Analog Switch Normally Open Terminals3, 14, 11, 6—NO1, NO4Analog Switch Normally Open Terminals—3, 6NC2, NC3Analog Switch Normally Closed Terminals—14, 11
*NO_ (or NC_) and COM_ pins are identical and interchangeable. Either may be considered as an input or output; signals pass
equally well in either direction.
5kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches
Applications Information
MAX4551/MAX4552/MAX4553
±15kV ESD ProtectionThe MAX4551/MAX4552/MAX4553 are ±15kV ESD-pro-
tected according to IEC 1000-4-2 at their NC/NO pins.
To accomplish this, bidirectional SCRs are included on-
chip between these pins and the GND pin. In normal
operation, these SCRs are off and have negligible
effect on the performance of the switches. When there
is an ESD strike at these pins, however, the voltages at
these pins go Beyond-the-Rails™ and cause the corre-
sponding SCR(s) to turn on in a few nanoseconds and
bypass the surge safely to ground. This method is
superior to using diode clamps to the supplies because
unless the supplies are very carefully decoupled
through low ESR capacitors, the ESD current through
the diode clamp could cause a significant spike in the
supplies. This may damage or compromise the reliabili-
ty of any other chip powered by those same supplies.
In the MAX4551/MAX4552/MAX4553, there are diodes
to the supplies in addition to the SCRs at the NC/NO
pins, but there is a resistance in series with these
diodes to limit the current into the supplies during an
ESD strike. The diodes are present to protect these
pins from overvoltages that are not as a result of ESD
strikes like those that may occur due to improper
power-supply sequencing.
Once the SCR turns on because of an ESD strike, it
continues to be on until the current through it falls
below its “holding current.” The holding current is typi-
cally 110mA in the positive direction (current flowing
into the NC/NO pin) and 95mA in the negative direction
at room temperature (see SCR Holding Current vs.
Temperature in the Typical Operating Characteristics).
The system should be designed such that any sources
connected to these pins are current limited to a value
below these to make sure the SCR turns off when the
ESD event gets over to resume normal operation. Also,
keep in mind that the holding current varies significant-
ly with temperature. At +85°C, which represents the
worst case, the holding currents drop to 70mA and
65mA in the positive and negative directions respec-
tively. Since these are typical numbers, to get guaran-
teed turn-off of the SCRs under all conditions, the
sources connected to these pins should be current lim-
ited to not more than half these values. When the SCR
is latched, the voltage across it is about ±3V, depend-
ing on the polarity of the pin current. The supply volt-
ages do not affect the holding currents appreciably.
The sources connected to the COM side of the switches
do not need to be current limited since the switches are
made to turn off internally when the corresponding
SCR(s) get latched.
Even though most of the ESD current flows to GND
through the SCRs, a small portion of it goes into the
supplies. Therefore, it is a good idea to bypass the
supply pins with 100nF capacitors directly to the
ground plane.
ESD protection can be tested in various ways. Trans-
mitter outputs and receiver inputs are characterized for
protection to the following:±15kV using the Human Body Model±8kV using the Contact Discharge method speci-
fied in IEC 1000-4-2 (formerly IEC 801-2)±15kV using the Air-Gap Discharge method speci-
fied in IEC 1000-4-2 (formerly IEC 801-2).
ESD Test ConditionsContact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body ModelFigure 8 shows the Human Body Model, and Figure 9
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the test device
through a 1.5kΩresistor.
IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and
performance of finished equipment; it does not specifi-
cally refer to integrated circuits. The MAX4551/MAX4552/
MAX4553 enable the design of equipment that meets
Level 4 (the highest level) of IEC 1000-4-2, without
additional ESD protection components.
The major difference between tests done using the
Human Body Model and IEC 1000-4-2 is higher peak
current in IEC 1000-4-2. Because series resistance is
lower in the IEC 1000-4-2 ESD test model (Figure 10),
the ESD withstand voltage measured to this standard
is generally lower than that measured using the
Human Body Model. Figure 11 shows the current
waveform for the ±8kV IEC 1000-4-2 Level 4 ESD
Contact Discharge test.
The Air-Gap test involves approaching the device with
a charged probe. The Contact Discharge method
connects the probe to the device before the probe is
energized.
Beyond-the-Rails is a trademark of Maxim Integrated Products.
