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MAX4551CPEMAXIMN/a2avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4551CSEMAXIMN/a3avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4551EPEMAXIMN/a2avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4551ESEMAXIMN/a20avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4552CSEMAXIMN/a15avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4552EEEMAXIMN/a2avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4552ESEMAXIMN/a12avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4553CPEMAXIMN/a3avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4553CSEMaxim N/a35avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4553EPEMAXIMN/a2avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
MAX4553ESEMAXIMN/a2avai15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches


MAX4553CSE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +5V, ±10%, V- = -5V, ±10%, T = T to T , unless otherw ..
MAX4553EPE ,15kV ESD-Protected / Quad / Low-Voltage / SPST Analog SwitchesGeneral Description ________
MAX4553ESE ,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 ..
MAX4554ESE ,Force-Sense SwitchesApplicationsOrdering Information continued at end of data sheet.Automated Test Equipment (ATE)*Cont ..
MAX4555C/D ,Force-Sense SwitchesELECTRICAL CHARACTERISTICS—MAX4554 (+20V, -10V Supplies)(V+ = +20V, V- = -10V, VL = 5V, GND = 0V, V ..
MAX4555CSE ,Force-Sense SwitchesFeaturesThe MAX4554/MAX4555/MAX4556 are CMOS analog ICs' 6Ω Force Signal Paths (±15V Supplies)confi ..
MAX8645YETI+ ,1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFNMAX8645X/MAX8645Y19-3978; Rev 4; 6/081x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm T ..
MAX8645YETI+T ,1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFNFeaturesThe MAX8645X/MAX8645Y charge pumps drive up to♦ Power Up to Eight LEDseight white LEDs with ..
MAX8646ETG+ ,6A, 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 ..
MAX8646ETG+T ,6A, 2MHz Step-Down Regulator with Integrated SwitchesApplicationsPGNDPOLsCTL1ASIC/CPU/DSP Core and I/O VoltagesFBCTL2DDR Power SuppliesFREQBase-Station ..
MAX8646ETG+T ,6A, 2MHz Step-Down Regulator with Integrated SwitchesApplicationsvoltage-error amplifier. The voltage-mode control archi-♦ Lead-Free, 24-Pin, 4mm x 4mm ..
MAX8648ETE+ ,Ultra-Efficient Charge Pumps for Six White/RGB LEDs in 3mm x 3mm Thin QFNfeatures a three-wire serial-pulse logic inter- ♦ 16-Pin, 3mm x 3mm Thin QFN Packageface. Both devi ..


MAX4551CPE-MAX4551CSE-MAX4551EPE-MAX4551ESE-MAX4552CSE-MAX4552EEE-MAX4552ESE-MAX4553CPE-MAX4553CSE-MAX4553EPE-MAX4553ESE
15kV ESD-Protected / Quad / Low-Voltage / SPST Analog Switches
General Description
The 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.
________________________Applications

Battery-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 Supplies
120ΩSignal Paths with ±5V SuppliesLow Power Consumption: <1µW4 Separately Controlled SPST SwitchesRail-to-Rail Signal HandlingPin-Compatible with Industry-Standard
DG211/DG212/DG213
TTL/CMOS-Compatible Inputs with Dual ±5V or
Single +5V Supply
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches

19-1391; Rev 0; 10/98
Ordering Information
Pin Configurations/Functional Diagrams/Truth Tables
MAX4551/MAX4552/MAX4553
±15kV 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
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.
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = +5V, ±10%, V- = -5V, ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V, ±10%, V- = -5V, ±10%, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
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.)
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
Typical Operating Characteristics

(V+ = +5V, V- = -5V, GND = 0, TA = +25°C, unless otherwise noted.)
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
Pin Description
_____________________________Typical Operating Characteristics (continued)

(V+ = +5V, V- = -5V, GND = 0, TA= +25°C, unless otherwise noted.)
*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.
MAX4551/MAX4552/MAX4553
±15kV ESD-Protected, Quad,
Low-Voltage, SPST Analog Switches
Applications Information
MAX4551/MAX4552/MAX4553
±15kV ESD Protection

The 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 Conditions

Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model

Figure 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 1000-4-2

The 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.
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