19-1761; Rev 0; 7/00
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
The MAX4620 has four NO switches, the MAX4630 has
four NC switches, and the MAX4640 has two NO and
two NC switches. These devices are available in 14-pin
TSSOP, SO, and DIP packages.
________________________Applications
Battery-Powered Systems
____________________________Features
♦ ESD-Protected NO/NC Pins
±15kV Human Body Model
±15kV IEC 1000-4-2 Air-Gap Discharge
±8kV IEC 1000-4-2 Contact Discharge
♦ Pin Compatible with Industry-Standard 74HC4066,
MAX4066, MAX4610/MAX4611/MAX4612
♦ Guaranteed On-Resistance
70Ω (max) at 5V
120Ω (max) at 3V
♦ On-Resistance Flatness
2Ω (typ) at 5V
6Ω (typ) at 3V
♦ On-Resistance Matching
0.5Ω (typ) at 5V
0.6Ω (typ) at 3V
♦ Guaranteed 0.5nA Leakage Current at TA = +25°C
♦ +2V to +12V Single-Supply Voltage
♦ TTL/CMOS-Logic Compatible
♦ Low Distortion: 0.015%
♦ -3dB Bandwidth: >300MHz
♦ Rail-to-Rail Signal Range
Pin Configurations/Functional
Diagrams/Truth Tables
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
TOP VIEW
Communications Circuits
MAX4620
Relay Replacement
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX4620EUD
-40°C to +85°C
14 TSSOP
MAX4620ESD
-40°C to +85°C
14 SO
MAX4620EPD
-40°C to +85°C
14 DIP
MAX4630EUD
-40°C to +85°C
14 TSSOP
MAX4630ESD
-40°C to +85°C
14 SO
MAX4630EPD
-40°C to +85°C
14 DIP
Ordering Information continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
NO1 1
14 V+
COM1 2
13 IN1
NO2 3
12 IN4
COM2 4
11 NO4
IN2 5
10 COM4
IN3 6
9 COM3
8 NO3
GND 7
TSSOP/SO/DIP
INPUT
LOW
SWITCH STATE
OFF
HIGH
ON
Pin Configurations/Functional Diagrams/Truth Tables
continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX4620/MAX4630/MAX4640
General Description
The MAX4620/MAX4630/MAX4640 low-voltage, highESD-protected, quad, single-pole/single-throw (SPST)
analog switches are pin-compatible replacements for
the industry-standard 74HC4066 analog switch. The
normally open (NO) and normally closed (NC) pins are
protected against ±15kV electrostatic discharge (ESD)
without latchup or damage. Each switch can handle
Rail-to-Rail® analog signals. The off-leakage current is
0.5nA at +25°C. These analog switches are suitable for
low-distortion audio applications and are the preferred
solution over mechanical relays in automated test
equipment or applications where current switching is
required. They have low power requirements (0.5µW),
require less board space, and are more reliable than
mechanical relays. Each device is controlled by
TTL/CMOS input voltage levels and is bilateral.
These switches feature guaranteed operation from a
+2V to +12V single supply, making them ideal for use
in battery-powered applications. The on-resistance is
70Ω max, matched between switches to 0.5Ω (typ),
and flat (2Ω typ) over the specified signal range.
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +13V
IN_, COM_, NO_, NC_ to GND (Note 1).......-0.3V to (V+ + 0.3V)
Continuous Current (NO_, NC_, COM_)...........................±10mA
Peak Current (NO_, NC_, COM_, pulsed at
1ms 10% duty cycle) ........................................................±30mA
ESD Protection per Method IEC 1000-4-2 (NO_, NC_)
Air-Gap Discharge .........................................................±15kV
Contact Discharge ...........................................................±8kV
ESD Protection per Method 3015.7
V+, GND, IN_, COM_ ....................................................±2.5kV
NO_, NC_ .......................................................................±15kV
Continuous Power Dissipation (TA = +70°C)
14-Pin TSSOP (derate 6.3mW/°C above +70°C) .........571mW
14-Pin DIP (derate 10mW/°C above +70°C) ................800mW
14-Pin SO (derate 8mW/°C above +70°C)...................640mW
Operating Temperature Ranges
MAX46_ _E_....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Die Temperature..............................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Signals on NO_, NC_, COM_, or IN_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum
current rating.
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—SINGLE +5V SUPPLY
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +5V,
TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Input Voltage Range
On-Resistance
On-Resistance Match Between
Channels (Note 3)
On-Resistance Flatness
(Note 4)
Off-Leakage Current
(NO_ or NC_)
(Note 5)
2
VCOM_,
VNO_,
VNC_
RON
∆RON
RFLAT(ON)
INO_,
INC_
0
V+ = 4.5V,
ICOM_ = 1mA,
VNO_ or
VNC_ = 3.5V
V+ = 4.5V,
ICOM_ = 1mA,
VNO_ or
VNC_ = 3.5V
V+ = 4.5V;
ICOM_ = 1mA;
VNO_ or
VNC_ = 1V, 2.25V, 3.5V
V+ = 5.5V;
VCOM_ = 1V, 4.5V;
VNO_ or
VNC_ = 4.5V, 1V
TA = +25°C
45
70
Ω
TA = TMIN to TMAX
75
TA = +25°C
0.5
2
Ω
TA = TMIN to TMAX
3
TA = +25°C
2
4
Ω
TA = TMIN to TMAX
TA = +25°C
5
-0.5
0.01
0.5
nA
TA = TMIN to TMAX
-5
_______________________________________________________________________________________
5
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
MAX4620/MAX4630/MAX4640
ELECTRICAL CHARACTERISTICS—SINGLE +5V SUPPLY (continued)
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +5V,
TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
-0.5
0.01
0.5
UNITS
ANALOG SWITCH
COM_ Off-Leakage Current
(Note 5)
COM_ On-Leakage Current
(Note 5)
ICOM_(OFF)
ICOM_(ON)
V+ = 5.5V;
VCOM_ = 1V, 4.5V;
VNO_ or
VNC_ = 4.5V, 1V
TA = +25°C
TA = TMIN to TMAX
-5
V+ = 5.5V;
VCOM_ = 1V, 4.5V;
VNO_ or VNC_ = 1V,
4.5V, or floating
TA = +25°C
-1
nA
5
0.02
1
nA
TA = TMIN to TMAX
-10
10
LOGIC INPUT
IN_ Input High
VIH
IN_ Input Low
VIL
Logic Input Leakage Current
IIN
2.4
VIN = 0 or V+
V
-1
0.8
V
1
µA
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
Turn-Off Time
tOFF
Break-Before-Make
(MAX4640 only)
On-Channel Bandwidth -3dB
Charge Injection
BW
Q
NO_ or NC_ On-Capacitance
COFF
VCOM_ = 3V,
RL = 300Ω,
CL = 35pF,
Figure 1
TA = +25°C
VCOM_ = 3V,
CL = 35pF,
RL = 300Ω,
Figure 1
TA = +25°C
VCOM_ = 3V,
RL = 300Ω,
CL = 35pF
TA = +25°C
5
TA = TMIN to TMAX
4
90
150
ns
TA = TMIN to TMAX
180
50
80
ns
TA = TMIN to TMAX
100
45
ns
Signal = 0dBm, RIN = ROUT = 50Ω,
CL = 5pF, Figure 2
300
MHz
VGEN = 2V, CL = 1.0nF, RGEN = 0, Figure 4
5
pC
VNO_ = VNC_ = GND, f = 1MHz, Figure 3
20
pF
COM_ Off-Capacitance
CCOM_(OFF)
VCOM_ = GND, f = 1MHz, Figure 3
12
pF
COM_ On-Capacitance
CCOM_(ON)
VCOM_ = VNO_, VNC_ = GND, f = 1MHz,
Figure 3
20
pF
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 2
-75
RL = 50Ω, CL = 5pF, f = 10MHz, Figure 2
-45
Off-Isolation (Note 6)
VISO
dB
_______________________________________________________________________________________
3
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS—SINGLE +5V SUPPLY (continued)
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +5V,
TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Crosstalk (Note 7)
VCT
Total Harmonic Distortion
THD
CONDITIONS
MIN
TYP
RL = 50Ω, CL = 5pF, f = 1MHz, Figure 5
-90
RL = 50Ω, CL = 5pF, f = 10MHz, Figure 5
-70
RL = 600Ω, f = 20Hz to 20kHz
MAX
UNITS
dB
0.015
%
ESD Silicon-Controlled Rectifier
(SCR) Holding Current
IH
110
mA
ESD SCR Holding Voltage
VH
3
V
POWER SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
2
V+ = 5.5V,
VIN = 0 or V+
12
TA = +25°C
1
TA = TMIN to TMAX
10
V
µA
ELECTRICAL CHARACTERISTICS—SINGLE +3V SUPPLY
(V+ = +2.7V to +3.6V, VIH = 2.0V, VIL = 0.6V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+
V
ANALOG SWITCH
Input Voltage Range
On-Resistance
On-Resistance Match Between
Channels (Notes 3, 8)
On-Resistance Flatness
(Notes 4, 8)
VCOM_,
VNO_,
VNC_
RON
∆RON
RFLAT(ON)
0
V+ = 2.7V,
ICOM_ = 1mA,
VNO_ or
VNC_ = 1.5V
V+ = 2.7V,
ICOM_ = 1mA,
VNO_ or
VNC_ = 1.5V
V+ = 2.7;
ICOM_ = 1mA;
VNO_ or
VNC_ = 0.5V, 1.5V, 2.2V
TA = +25°C
70
120
Ω
TA = TMIN to TMAX
150
TA = +25°C
0.6
3
Ω
TA = TMIN to TMAX
4
TA = +25°C
6
12
Ω
TA = TMIN to TMAX
15
LOGIC INPUT
IN_ Input High
VIH
IN_ Input Low
VIL
Logic Input Leakage Current
IIN
4
2.0
VIN = 0 or V+
-1
_______________________________________________________________________________________
V
0.6
V
1
µA
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
150
250
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
Turn-Off Time
tOFF
Break-Before-Make
(MAX4640 only)
VCOM_ = 1.5V,
RL = 300Ω,
CL = 35pF,
Figure 1
TA = +25°C
VCOM_ = 1.5V,
RL = 300Ω,
CL = 35pF,
Figure 1
TA = +25°C
VCOM_ = 1.5V,
RL = 300Ω,
CL = 35pF
TA = +25°C
5
TA = TMIN to TMAX
4
ns
TA = TMIN to TMAX
300
60
100
ns
TA = TMIN to TMAX
150
ns
Charge Injection
Q
5
pC
ESD SCR Holding Current
IH
VGEN = 1.5V, CL = 1.0nF, RGEN = 0, Figure 4
110
mA
ESD SCR Holding Voltage
VH
3
V
POWER SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
2
V+ = 3.6V,
VIN = 0 or V+
12
TA = +25°C
1
TA = TMIN to TMAX
10
V
µA
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is used in
this data sheet.
Note 3: ∆RON = RON(MAX) - RON(MIN).
Note 4: Flatness is defined as the difference between the maximum and the minimum values of on-resistance as measured over the
specified analog signal ranges.
Note 5: Leakage parameters are 100% tested at TA(max), and guaranteed by correlation at +25°C.
Note 6: Off-Isolation = 20log10(VCOM / VNO), VCOM = output, VNO = input to off switch.
Note 7: Between any two switches.
Note 8: Guaranteed by design.
_______________________________________________________________________________________
5
MAX4620/MAX4630/MAX4640
ELECTRICAL CHARACTERISTICS—SINGLE +3V SUPPLY (continued)
(V+ = +2.7V to +3.6V, VIH = 2.0V, VIL = 0.6V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note
Typical Operating Characteristics
(V+ = +5V, TA = +25°C, unless otherwise specified.)
V+ = 3.3V
V+ = 5V
80
30
TA = +85°C
TA = +25°C
TA = -40°C
20
60
MAX4620/30/40-03
1000
LEAKAGE CURRENT (pA)
40
RON (Ω)
RON (Ω)
50
V+ = 2.5V
100
MAX4620/30/40-02
V+ = 1.8V
140
120
60
MAX4620/30/40-01
180
160
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
ON-RESISTANCE vs. VCOM AND
TEMPERATURE
ON-RESISTANCE vs. VCOM AND
SUPPLY VOLTAGE
100
ON
OFF
10
40
10
20
0
0
-40
-15
10
35
60
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
VCOM (V)
TEMPERATURE (°C)
SUPPLY CURRENT vs. SUPPLY
VOLTAGE AND TEMPERATURE
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
tON
80
140
120
100
70
6
4
60
50
tON/tOFF (ns)
tON/tOFF (ns)
8
85
MAX4620/30/40-06
V+ = 5V
VCOM = 3V
90
MAX4620/30/40-05
100
MAX4620/30/40-04
V+ = 5V
10
tOFF
40
30
tON
80
60
tOFF
40
20
2
20
10
0
-15
10
35
60
0
-40
85
-15
10
35
60
TEMPERATURE (°C)
TEMPERATURE (°C)
TURN-ON/TURN-OFF TIME
vs. VCOM (V+ = +3V)
TURN-ON/TURN-OFF TIME
vs. VCOM (V+ = +5V)
120
tON
80
tON
70
100
tON/tOFF (ns)
60
80
tOFF
60
50
0
3
6
9
SUPPLY VOLTAGE (V)
12
CHARGE INJECTION vs. VCOM
90
MAX4620/30/40-07
140
85
MAX4620/30/40-08
-40
tOFF
40
30
40
20
15
CHARGE INJECTION (pC)
0
MAX4620/30/40-09
SUPPLY CURRENT (nA)
1
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
12
tON/tOFF (ns)
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
10
V+ = 3V
5
0
20
20
V+ = 5V
-10
0
0
0
0.5
1.0
1.5
VCOM (V)
6
-5
10
2.0
2.5
3.0
1.0
1.5
2.0
2.5
3.0
VCOM (V)
3.5
4.0
4.5
5.0
0
1
2
VCOM (V)
_______________________________________________________________________________________
3
4
5
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
FREQUENCY RESPONSE
-20
0.014
0.012
THD + N (%)
ON-LOSS
-40
OFF
-60
-80
MAX4620/30/40-11
0
LOSS (dB)
0.016
MAX4620/30/40-10
20
0.010
0.008
0.006
0.004
CROSSTALK
-100
0.002
-120
V+ = 5V
600Ω IN AND OUT
0
0.01
0.1
1
10
100
1000
10
100
FREQUENCY (MHz)
1k
10k
100k
FREQUENCY (Hz)
Pin Description
PIN
NAME
MAX4620
MAX4630
MAX4640
1
—
1
—
1
2
2
3
FUNCTION
NO1
Analog Switch 1 – Normally Open
—
NC1
Analog Switch 1 – Normally Closed
2
COM1
—
3
NO2
Analog Switch 2 – Normally Open
—
3
—
NC2
Analog Switch 2 – Normally Closed
4
4
4
COM2
5
5
5
IN2
Digital Control Input 2
6
6
6
IN3
Digital Control Input 3
Analog Switch 1 – Common
Analog Switch 2 – Common
7
7
7
GND
Ground
8
—
—
NO3
Analog Switch 3 – Normally Open
—
8
8
NC3
Analog Switch 3 – Normally Closed
9
9
9
COM3
Analog Switch 3 – Common
10
10
10
COM4
Analog Switch 4 – Common
11
—
—
NO4
Analog Switch 4 – Normally Open
—
11
11
NC4
Analog Switch 4 – Normally Closed
12
12
12
IN4
Digital Control Input 4
13
13
13
IN1
Digital Control Input 1
14
14
14
V+
Positive Supply Voltage Input
_______________________________________________________________________________________
7
MAX4620/MAX4630/MAX4640
Typical Operating Characteristics (continued)
(V+ = +5V, TA = +25°C, unless otherwise specified.)
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
MAX4620
MAX4630
MAX4640
SWITCH
INPUT
V+
V COM
SWITCH
OUTPUT
V+
NO_/NC_
COM_
VOUT
RL
300Ω
IN
LOGIC
INPUT
50%
0
CL
35pF
t OFF
GND
LOGIC
INPUT
t R < 20ns
t F < 20ns
V+
VOUT
SWITCH
OUTPUT
0
0.9 x V0UT
0.9 x VOUT
t ON
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
RL + RON
VOUT = VCOM
(
)
Figure 1. Switching Time
10nF
SIGNAL
GENERATOR 0dBm
V+
MAX4620
MAX4630
MAX4640
ANALYZER
NO_/NC_
GND
RL
Figure 2. Off-Isolation/On-Channel Bandwidth
MAX4620
MAX4630
MAX4640
V+
V+
COM_
V+
COM_
IN
8
10nF
VIL OR
VIH
IN
CAPACITANCE
METER
NO_/NC_
f = 1MHz
GND
Figure 3. Channel Off/On-Capacitance
_______________________________________________________________________________________
VIL OR
VIH
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
V+
∆VOUT
V+
VOUT
RGEN
COM_
NO_/NC_
VOUT
CL
V GEN
GND
IN
IN
OFF
ON
OFF
Q = (∆V OUT )(C L )
VIN
Figure 4. Charge Injection
Detailed Description
10nF
SIGNAL
GENERATOR 0dBm
0 OR 2.4V
ANALYZER
V+
V+
COM1
NO1
IN1
IN2
NO2
COM2
GND
RL
Figure 5. Crosstalk
MAX4620
MAX4630
MAX4640
50Ω
0 OR
2.4V
NC
The MAX4620/MAX4630/MAX4640 are quad SPST
CMOS analog switches with circuitry providing ±15kV
ESD protection on the NO and NC pins. The CMOS
switch construction provides rail-to-rail signal handling
while consuming virtually no power. Each of the four
switches is independently controlled by a TTL/CMOSlevel-compatible digital input.
Applications Information
Do not exceed the absolute maximum ratings because
stresses beyond the listed ratings may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always sequence V+ on first, followed by the logic inputs, NO/NC, or COM.
Operating Considerations for
High-Voltage Supply
The MAX4620/MAX4630/MAX4640 are capable of
+12V single-supply operation with some precautions.
The absolute maximum rating for V+ is 13V (referenced
to GND). When operating near this region, bypass V+
with a minimum 0.1µF capacitor to ground as close to
the IC as possible.
_______________________________________________________________________________________
9
MAX4620/MAX4630/MAX4640
MAX4620
MAX4630
MAX4640
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
±15kV ESD Protection
The MAX4620/MAX4630/MAX4640 are ±15kV ESD-protected at the NC/NO terminals. To accomplish this,
bidirectional SCRs are included on-chip between these
terminals. When the voltages at these terminals go
Beyond-the-RailsTM, the corresponding SCR turns on in
a few nanoseconds and bypasses 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 reliability of any other chip powered by
those same supplies.
There are diodes from NC/NO to the supplies in addition to the SCRs. There is a resistance in series with
each of these diodes to limit the current into the supplies during an ESD strike. The diodes protect these
terminals from overvoltages that are not a result of ESD
strikes. These diodes also protect the device from
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 typically 110mA in the positive direction (current flowing
into the NC/NO terminal) at room temperature (see
Supply Current vs. Temperature in the Typical
Operating Characteristics). Design the system so that
any sources connected to NC/NO are current limited to
a value below the holding current to ensure the SCR
turns off when the ESD event is finished and normal
operation is resumed. Also, keep in mind that the holding current varies significantly with temperature. The
worst case is at +85°C when the holding currents drop
to 70mA. Since this is a typical number to guarantee
turn-off of the SCRs under all conditions, the sources
connected to these terminals should be current limited
to not more than half this value. When the SCR is
latched, the voltage across it is approximately 3V,
depending on the polarity of the pin current. The supply
voltages do not appreciably affect the holding current.
The sources connected to the COM side of the switches do not need to be current limited since the switches
turn off internally when the corresponding SCR(s) latches.
Even though most of the ESD current flows to GND
through the SCRs, a small portion of it goes into V+.
Therefore, it is a good idea to bypass the V+ with 0.1µF
capacitors directly to the ground plane.
ESD protection can be tested in various ways. Transmitter outputs and receiver inputs are characterized for
protection to the following:
• ±15kV using the Human Body Model
•
±8kV using the Contact Discharge method specified in IEC 1000-4-2 (formerly IEC 801-2)
•
±15kV using the Air-Gap Discharge method specified in IEC 1000-4-2 (formerly IEC 801-2)
ESD Test Conditions
Contact Maxim Integrated Products for a reliability
report that documents test setup, methodology, and
results.
Human Body Model
Figure 6 shows the Human Body Model, and Figure 7
shows the waveform it generates when discharged into
a low impedance. This model consists of a 100pF
capacitor charged to the ESD voltage of interest, which
can be discharged into the test device through a 1.5kΩ
resistor.
IEC 1000-4-2
The IEC 1000-4-2 standard covers ESD testing and
performance of finished equipment; it does not specifically refer to ICs. The MAX4620/MAX4630/MAX4640
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 8),
the ESD withstand voltage measured to this standard is
generally lower than that measured using the Human
Body Model. Figure 9 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.
Chip Information
TRANSISTOR COUNT: 156
PROCESS: CMOS
Beyond-the-Rails is a trademark of Maxim Integrated Products.
10
______________________________________________________________________________________
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
CHARGE-CURRENT
LIMIT RESISTOR
MAX4620/MAX4630/MAX4640
RC
1MΩ
RD
1500Ω
IP 100%
90%
DISCHARGE
RESISTANCE
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
AMPERES
HIGHVOLTAGE
DC
SOURCE
Cs
100pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
36.8%
10%
0
0
HIGHVOLTAGE
DC
SOURCE
Cs
150pF
RD
330Ω
I
100%
90%
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
I PEAK
CHARGE-CURRENT
LIMIT RESISTOR
tDL
CURRENT WAVEFORM
Figure 7. Human Body Model Current Waveform
Figure 6. Human Body ESD Test Model
RC
50MΩ to 100MΩ
TIME
tRL
DEVICE
UNDER
TEST
10%
t r = 0.7ns to 1ns
t
30ns
60ns
Figure 8. IEC 1000-4-2 ESD Test Model
Figure 9. IEC 1000-4-2 ESD Generator Current Waveform
______________________________________________________________________________________
11
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
MAX4620/MAX4630/MAX4640
Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
MAX4640
MAX4630
NC1 1
14 V+
NO1 1
14 V+
COM1 2
13 IN1
COM1 2
13 IN1
NC2 3
12 IN4
NO2 3
12 IN4
COM2 4
11 NC4
COM2 4
11 NC4
IN2 5
10 COM4
IN2 5
10 COM4
IN3 6
9 COM3
IN3 6
9 COM3
8 NC3
GND 7
8 NC3
GND 7
TSSOP/SO/DIP
TSSOP/SO/DIP
INPUT
SWITCH STATE
INPUT
NO1, NO2
NC3, NC4
LOW
HIGH
ON
OFF
LOW
HIGH
OFF
ON
ON
OFF
Ordering Information (continued)
PART
12
TEMP. RANGE
PIN-PACKAGE
MAX4640EUD
-40°C to +85°C
14 TSSOP
MAX4640ESD
-40°C to +85°C
14 SO
MAX4640EPD
-40°C to +85°C
14 DIP
______________________________________________________________________________________
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
TSSOP.EPS
______________________________________________________________________________________
13
MAX4620/MAX4630/MAX4640
Package Information
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
SOICN.EPS
MAX4620/MAX4630/MAX4640
Package Information (continued)
14
______________________________________________________________________________________
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
PDIPN.EPS
______________________________________________________________________________________
15
MAX4620/MAX4630/MAX4640
Package Information (continued)
MAX4620/MAX4630/MAX4640
±15kV ESD-Protected, Low-Voltage, Quad,
SPST, CMOS Analog Switches
NOTES
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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