19-1148; Rev 0; 11/96
Quad, Low-Voltage,
SPST Analog Switches with Enable
______________________________Features
The MAX4536/MAX4537/MAX4538 are quad, low-voltage,
single-pole/single-throw (SPST) analog switches with a
common enable pin. They are pin compatible with the
industry-standard 74HC4316. The MAX4536 has four
normally open (NO) switches, and the MAX4537 has
four normally closed (NC) switches. The MAX4538 has
two NO switches and two NC switches.
♦ Pin Compatible with 74HC4316
These switches operate from a +2V to +12V single supply,
or from ±2V to ±6V dual supplies. On-resistance
(200Ω max) is matched between switches to 4Ω (max)
and is flat (10Ω max) over the specified signal range.
Each switch can handle rail-to-rail analog signals. The
off-leakage current is only 1nA at +25°C and 10nA at
+85°C.
All digital inputs have 0.8V to 2.4V logic thresholds,
ensuring TTL/CMOS-logic compatibility when using a
single +5V supply or dual ±5V supplies.
♦ ±2.0V to ±6V Dual Supplies
+2.0V to +12V Single Supply
♦ Four Separately Controlled SPST Switches
with Common Enable
♦ 100Ω Signal Paths with Dual ±5V Supplies
200Ω Signal Paths with Single +4.5V Supply
♦ Rail-to-Rail Signal Handling
♦ tON and tOFF = 100ns and 80ns at ±4.5V Supply
♦ Less than 1µW Power Consumption
♦ >2kV ESD Protection per Method 3015.7
♦ TTL/CMOS-Compatible Inputs
♦ Small Packages: PDIP, QSOP, Narrow SO
________________Ordering Information
__________________________Applications
Battery-Operated Equipment
PART
Low-Voltage Data Acquisition
Test Equipment
Avionics
Portable Equipment
Audio-Signal Routing
TEMP. RANGE
PIN-PACKAGE
MAX4536CPE
0°C to +70°C
16 Plastic DIP
MAX4536CSE
MAX4536CEE
MAX4536C/D
MAX4536EPE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
16 QSOP
Dice*
16 Plastic DIP
MAX4536ESE
-40°C to +85°C
16 Narrow SO
MAX4536EEE
-40°C to +85°C
16 QSOP
Ordering Information continued at end of data sheet.
*Contact factory for availability.
Networking
________________________Pin Configurations/Functional Diagrams/Truth Tables
COM1 1
16 V+
COM1 1
16 V+
COM1 1
16 V+
NO1 2
15 IN1
NC1 2
15 IN1
NO1 2
15 IN1
NO2 3
14 IN4
13 COM4
COM2 4
NC2 3
14 IN4
13 COM4
COM2 4
NC2 3
14 IN4
13 COM4
COM2 4
IN2 5
12 NO4
IN2 5
12 NC4
IN2 5
12 NO4
IN3 6
11 NO3
IN3 6
11 NC3
IN3 6
11 NC3
EN 7
10 COM3
EN 7
10 COM3
EN 7
10 COM3
GND 8
9
V-
GND 8
9
V-
GND 8
9
MAX4536
MAX4537
MAX4538
DIP/SO/QSOP
DIP/SO/QSOP
DIP/SO/QSOP
MAX4536
MAX4537
MAX4538
SWITCHES
1, 4
OFF
SWITCHES
2, 3
ON
1
ON
OFF
X
OFF
OFF
SWITCH_
EN
IN_
0
ON
0
0
1
OFF
0
1
EN
IN_
SWITCH_
EN
IN_
0
0
OFF
0
0
1
ON
0
1
X
OFF
1
X
OFF
SWITCHES SHOWN FOR LOGIC “0” INPUT
V-
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX4536/MAX4537/MAX4538
_________________General Description
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+ ........................................................................-0.3V to +13.0V
V- .........................................................................-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 ..................................................>2000V
Continuous Power Dissipation (TA = +70°C) (Note 2)
Plastic DIP (derate 10.53mW/°C above +70°C) ............842mW
Narrow SO (derate 8.70mW/°C above +70°C) ..............696mW
QSOP (derate 8.00mW/°C above +70°C) ......................800mW
Operating Temperature Ranges
MAX453_C_ E .......................................................0°C to +70°C
MAX453_E_ E ....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Signals on NC_, NO_, COM_, EN, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
Note 2: All leads are soldered or welded to PC boards.
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—±5V Dual Supplies
(V+ = 4.5V to 5.5V, V- = -4.5V to -5.5V, VINH = 2.4V, VINL = 0.8V, V EN = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
(Note 3)
UNITS
ANALOG SWITCH
Analog Signal Range
COM_ NO_, COM_ NC_
On-Resistance
COM_ NO_, COM_ NC_
On-Resistance Match Between
Channels (Note 5)
VCOM_,
VNO_, VNC
C, E
(Note 4)
RON
V+ = 4.5V, V- = -4.5V,
VCOM_ = 3.5V, ICOM_ = 1mA
∆RON
V+ = 4.5V, V- = -4.5V,
VCOM_ = 3.5V, ICOM_ = 1mA
V-
+25°C
V+
55
C, E
100
125
+25°C
1
C, E
4
V
Ω
Ω
6
COM_ NO_, COM_ NC_
On-Resistance Flatness (Note 6)
RFLAT(ON)
+25°C
V+ = 5.0V, V- = -5.0V,
VCOM_ = -3.0V, 0, +3.0V, ICOM_ = 1mA C, E
NO_, NC_ Off-Leakage Current
(Note 7)
INO_(OFF),
INC_(OFF)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ _ = 4.5V
+25°C
-1
C, E
-10
COM_ Off-Leakage Current
(Note 7)
ICOM_(OFF)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ _ = 4.5V
+25°C
-1
C, E
-10
COM_ On-Leakage Current
(Note 7)
ICOM_(ON)
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V, VN_ _ = ±4.5V
+25°C
-2
C, E
-20
±
±
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
4
10
15
0.01
1
10
0.01
1
10
0.01
2
20
Ω
nA
nA
nA
LOGIC INPUT
EN, IN_ Input Logic Threshold High
VINH
C, E
EN, IN_ Input Logic Threshold Low
VINL
C, E
0.8
1.4
C, E
-1
0.03
EN, IN_ Input Current Logic
High or Low
2
IINH_, IINL_
VIN_ = 0.8V or 2.4V
1.4
_______________________________________________________________________________________
2.4
V
V
1
µA
Quad, Low-Voltage,
SPST Analog Switches with Enable
(V+ = 4.5V to 5.5V, V- = -4.5V to -5.5V, VINH = 2.4V, VINL = 0.8V, V EN = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
(Note 3)
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
VCOM_ = ±3V, V+ = 4.5V,
V- = -4.5V (Figure 1)
+25°C
Turn-Off Time
tOFF
VCOM_ = ±3V, V+ = 4.5V,
V- = -4.5V (Figure 1)
+25°C
Break-Before-Make Time Delay
(MAX4538 Only)
tBBM
VCOM_ = ±3V, V+ = 5.5V,
V- = -5.5V (Figure 2)
+25°C
CL = 1.0nF, VNO_ = 0V, RS = 0Ω
+25°C
1
VNO_ = GND, f = 1MHz
+25°C
2
pF
Charge Injection (Figure 3)
Q
NO_, NC_ Off-Capacitance
(Figure 6)
CN_(OFF)
35
C, E
100
125
15
C, E
50
60
5
5
15
ns
ns
ns
5
pC
COM_ Off-Capacitance (Figure 6)
CCOM_(OFF)
VCOM_ = GND, f = 1MHz
+25°C
2
pF
COM_ On-Capacitance (Figure 7)
CCOM_(ON)
VCOM_ = VNO_ = GND, f = 1MHz
+25°C
6
pF
Off-Isolation (Note 8, Figure 4)
VISO
RL = 50Ω, CL = 15pF,
VN_ = 1VRMS, f = 1MHz
+25°C
-65
dB
Channel-to-Channel Crosstalk
(Note 9, Figure 5)
VCT
RL = 50Ω, CL = 15pF,
VN_ = 1VRMS, f = 1MHz
+25°C
-75
dB
POWER SUPPLY
Power-Supply Range
V+, V-
V+ Supply Current
I+
V+ = 5.5V, all VIN_ = 0V or V+
V- Supply Current
I-
V- = -5.5V
C, E
-6
+25°C
-1
C, E
-10
+25°C
-1
C, E
-10
6
0.05
1
10
0.05
1
10
V
µA
µA
_______________________________________________________________________________________
3
MAX4536/MAX4537/MAX4538
ELECTRICAL CHARACTERISTICS—±5V Dual Supplies (continued)
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
ELECTRICAL CHARACTERISTICS—+5V Single Supply
(V+ = 4.5V to 5.5V, V- = 0V, VINH = 2.4V, VINL = 0.8V, V EN = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
(Note 3)
UNITS
ANALOG SWITCH
Analog Signal Range
COM_ -NO_, COM_ -NC_
On-Resistance
VCOM_,
VNO_, VNC
(Note 4)
C, E
0
+25°C
V+
90
RON
V+ = 4.5V, VCOM_ = 3.5V,
ICOM_ = 1mA
COM_ -NO_, COM_ -NC_
On-Resistance Match Between
Channels (Note 5)
∆RON
V+ = 4.5V, VCOM_ = 3.5V,
ICOM_ = 1mA
NO_, NC_ Off-Leakage Current
(Notes 7, 10)
INO_(OFF),
INC_(OFF)
V+ = 5.5V, VCOM_ = 1V, 4.5V,
VN_ = +4.5V, 1V
+25°C
-1
C, E
-10
COM_ Off-Leakage Current
(Notes 7, 10)
ICOM_(OFF)
V+ = 5.5V, VCOM_ = 1V, 4.5V,
VN_ = +4.5V, 1V
+25°C
-1
C, E
-10
COM_ On-Leakage Current
(Note 7, 10)
ICOM_(ON)
V+ = 5.5V, VCOM_ = 1V, 4.5V,
+25°C
-2
C, E
-20
C, E
200
225
+25°C
2
C, E
8
V
Ω
Ω
10
0.01
1
10
0.01
1
10
0.01
2
20
nA
nA
nA
LOGIC INPUT
EN, IN_ Input Logic Threshold High
VINH
C, E
EN, IN_ Input Logic Threshold Low
VINL
C, E
0.8
1.4
C, E
-1
0.03
1
EN, IN_ Input Current Logic
High or Low
IINH_, IINL_
VIN_ = 0.8V or 2.4V
1.4
2.4
V
V
µA
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
VCOM_ = 3V, V+ = 4.5V
(Figure 1)
+25°C
50
100
C, E
20
125
Turn-Off Time
tOFF
VCOM_ = 3V, V+ = 4.5V
(Figure 1)
+25°C
80
C, E
100
Break-Before-Make Time Delay
tBBM
MAX4538, VCOM_ = 3V,
V+ = 5.5V (Figure 2)
+25°C
+25°C
Q
CL = 1.0nF, VNO = 0V, RS = 0Ω
+25°C
I+
V+ = 5.5V, all VIN_ = 0V or V+
Charge Injection (Figure 3) (Note 4)
5
25
1
ns
ns
ns
5
pC
POWER SUPPLY
V+ Supply Current
4
+25°C
-1
C, E
-10
0.05
_______________________________________________________________________________________
1
10
µA
Quad, Low-Voltage,
SPST Analog Switches with Enable
(V+ = 2.7V to 3.6V, V- = 0V, VINH = 2.0V, VINL = 0.5V, V EN = 0.5V, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
(Note 3)
UNITS
ANALOG SWITCH
Analog Signal Range
COM_ -NO_, COM_ -NC_
On-Resistance
VCOM_,
VNO_, VNC
RON
(Note 4)
V+ = 2.7V, VCOM_ = 1.5V,
ICOM_ = 0.1mA
C, E
0
+25°C
V+
210
C, E
500
600
V
Ω
LOGIC INPUT
EN, IN_ Input Logic Threshold High
VINH
C, E
EN, IN_ Input Logic Threshold Low
VINL
C, E
0.5
0.9
C, E
-1
0.03
EN, IN_ Input Current Logic
High or Low
IINH_, IINL_
VIN_ = 0.8V or 2.4V
0.9
2.0
V
V
1
µA
SWITCH DYNAMIC CHARACTERISTICS (Note 4)
Turn-On Time
tON
VCOM_ = 1.5V, V+ = 2.7V
(Figure 1)
+25°C
Turn-Off Time
tOFF
VCOM_ = 1.5V, V+ = 2.7V
(Figure 1)
+25°C
Break-Before-Make Time Delay
tBBM
MAX4538, VCOM_ = 1.5V,
V+ = 3.6V (Figure 2)
+25°C
+25°C
Q
CL = 1.0nF, VNO = 0V, RS = 0Ω
+25°C
I+
V+ = 3.6V, all VIN_ = 0V or V+
Charge Injection (Figure 3)
80
C, E
250
300
40
C, E
100
120
10
40
ns
ns
ns
3
pC
POWER SUPPLY
V+ Supply Current
+25°C
-1
C, E
-10
0.05
1
10
µA
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Guaranteed by design.
∆RON = ∆RON(MAX) - ∆RON(MIN).
Resistance flatness is defined as the difference between the maximum and the minimum value of on-resistance as
measured over the specified analog-signal range.
Note 7: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at
TA = +25°C.
Note 8: Off-isolation = 20log10 [VCOM_ / (VNC_ or VNO_)], VCOM_ = output, VNC_ or VNO_ = input to off switch.
Note 9: Between any two switches.
Note 10: Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
Note 3:
Note 4:
Note 5:
Note 6:
_______________________________________________________________________________________
5
MAX4536/MAX4537/MAX4538
ELECTRICAL CHARACTERISTICS—+3V Single Supply
__________________________________________Typical Operating Characteristics
(V+ = +5V, V- = -5V GND = 0V, TA = +25°C, unless otherwise noted.)
V± = ±1.5V
75
65
120
V± = ±2.0V
100
RON (Ω)
V± = ±3.0V
V± = ±2.5V
80
55
50
60
1000
TA = +85°C
60
V+ = 1.5V
V+ = 2.0V
TA = +25°C
V+ = 2.5V
V+ = 3.0V
100
V+ = 5.0V
45
40
40
V± = ±5.0V
20
0
-5 -4 -3 -2 -1
0
1
2
3
4
V+ = 9.0V
TA = -55°C
35
V- = 0V
10
30
5
-5
-4
-3
-2 -1
0
1
2
3
4
0
5
1
2
3
4
6
5
7
8
VCOM (V)
VCOM (V)
VCOM (V)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
ON/OFF LEAKAGE CURRENT
vs. TEMPERATURE
POWER-SUPPLY CURRENT
vs. TEMPERATURE
110
TA = +25°C
100
1.0
LEAKAGE (nA)
TA = +85°C
120
90
0.1
ON LEAKAGE
0.1
0.01
0.01
I (V+)
0.001
OFF LEAKAGE
80
TA = -55°C
70
10
MAX4536/37/38 TOC-06
130
9
1.0
I+, I- (µA)
TA = +125°C
140
10
MAX4536/37/38 TOC-04
150
MAX4536/37/38 TOC-05
RON (Ω)
140
RON (Ω)
TA = +125°C
70
10,000
RON (Ω)
180
MAX4536/37/38 TOC-02
80
MAX4536/7/8 TOC-01
200
160
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
MAX4536/7/8 TOC-03
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
I (V-)
0.0010
0.0001
60
0.0001
1
2
3
4
25 50 75 100 125 150 175
VCOM (V)
TEMPERATURE (°C)
ON/OFF TIME vs. SUPPLY VOLTAGE
(DUAL SUPPLIES)
ON/OFF TIME
vs. TEMPERATURE
50
MAX4536/37/38 TOC-07a
90
80
tON, tOFF (ns)
70
40
60
50
-75 -50 -25
tON
0
25
50
75 100 125 150
TEMPERATURE (°C)
CHARGE INJECTION vs. VCOM
2
30
1
Qj, (pC)
100
SINGLE SUPPLY
DUAL SUPPLIES
0
20
tON
40
tOFF
30
-1
10
20
tOFF
10
-2
0
±2
±3
±4
SUPPLY VOLTAGE (V)
6
0.00001
-75 -50 -25 0
5
MAX4536/37/38 TOC-08
0
MAX4536/37/38 TOC-09
50
tON, tON (ns)
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
±5
±6
-75 -50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
-5
-4
-3
-2 -1
0
1
VCOM (V)
_______________________________________________________________________________________
2
3
4
5
Quad, Low-Voltage,
SPST Analog Switches with Enable
(V+ = +5V, V- = -5V GND = 0V, TA = +25°C, unless otherwise noted.)
LOGIC-LEVEL THRESHOLD
vs. POSITIVE SUPPLY VOLTAGE
FREQUENCY RESPONSE
0
-40 ON-PHASE
-50
10
0
-60
-10
-70
-20
-30
OFF-ISOLATION
-90
-100
0.1
1
10
100
2.0
1.5
10
THD (%)
20
LOGIC-LEVEL THRESHOLD (V)
-30
PHASE (DEGREES)
30
-80
2.5
40
ON-RESPONSE
-20
-
LOSS (dB)
-10
50
TOTAL HARMONIC
DISTORTION vs. FREQUENCY
MAX4536/37/38 TOC-11
MAX4536/7/8 TOC-10
1.0
MAX4536/7/8 TOC-12
V+ = 5V
V- = -5V
5Vp-p SIGNAL
600Ω IN AND OUT
1
0.1
0.5
-40
100
-50
1000
FREQUENCY (MHz)
0
0.01
0
1
2
3
4
5
6
7
8
9
10
SUPPLY VOLTAGE (V)
10
100
1k
10k
100k
FREQUENCY (Hz)
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
1, 4, 10, 13
COM1–COM4
2, 3, 11, 12
NO1–NO4,
or
NC1–NC4
Analog Switch Normally Open* or Normally Closed* Terminals (see Truth Tables)
5, 6, 14, 15
IN1–IN4
Logic-Control Digital Inputs. Control each switch (see Truth Tables), except when
EN is high.
7
EN
8
GND
9
V-
Negative Analog Supply-Voltage Input. Connect V- to GND for single-supply operation.
16
V+
Positive Analog and Digital Supply-Voltage Input. Internally connected to substrate.
Analog Switch Common* Terminals
Disable Logic Input. Connect logic high to EN to disable (open) all switches.
Ground. Connect to digital ground. (Analog signals have no ground reference;
they are limited to V+ and V-.)
*NO_/NC_ and COM_ pins are identical and interchangeable. Either may be considered as an input or an output; signals pass equally
well in either direction.
_______________________________________________________________________________________
7
MAX4536/MAX4537/MAX4538
_____________________________Typical Operating Characteristics (continued)
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
__________Applications Information
Power-Supply Considerations
Overview
The MAX4536/MAX4537/MAX4538 construction is typical of most CMOS analog switches. These devices have
three supply pins: V+, V-, and GND. V+ and V- drive the
internal CMOS switches and set the limits of the analog
voltage on any switch. Reverse ESD-protection diodes
are internally connected between each analog-signal
pin, and both V+ and V-. One of these diodes conducts
if any analog signal exceeds V+ or V-. These reversebiased ESD diodes leak during normal operation, forming the only current drawn from V+ or V-.
Virtually all the analog leakage current is through the
ESD diodes. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced,
they are reverse biased differently. Each is biased by
either V+ or V- and the analog signal. This means their
leakages vary as the signal varies. The difference in the
two diode leakages from the signal path to the V+ and
V- pins constitutes the analog-signal path leakage current. All analog leakage current flows to the supply terminals, not to the other switch terminal. This explains
how both sides of a given switch can show leakage
currents of either the same or opposite polarity.
There is no connection between the analog-signal
paths and GND. The analog-signal paths consist of an
N-channel and P-channel MOSFET with their sources
and drains paralleled and their gates driven out of
phase to V+ and V- by the logic-level translators.
V+ and GND power the internal logic and logic-level
translators and set the input logic thresholds. The
logic-level translators convert the logic levels to
switched V+ and V- signals to drive the analog switches’ gates. This drive signal is the only connection
between the logic supplies and the analog supplies.
V+, and V- have ESD-protection diodes to GND. The
logic-level inputs have ESD protection to V+ and to V-.
Increasing V- has no effect on the logic-level thresholds, but it does increase the drive to the P-channel
switches, reducing their on-resistance. V- also sets the
negative limit of the analog-signal voltage.
8
The logic-level thresholds are CMOS/TTL-compatible
when V+ is +5V. The threshold increases slightly as V+
is raised. When V+ reaches +12V, the level threshold is
about 3.1V, above the TTL output high-level minimum
of 2.8V, but still compatible with CMOS outputs.
Bipolar Supplies
The MAX4536/MAX4537/MAX4538 operate with bipolar
supplies between ±2.0V and ±6V. The V+ and V- supplies need not be symmetrical, but their sum cannot
exceed the absolute maximum rating of 13.0V. Do not
connect the MAX4536/MAX4537/MAX4538’s V+ to
+3V and then connect the logic-level input pins to
TTL logic-level signals. TTL logic-level outputs in
excess of the absolute maximum ratings can damage the part and/or external circuits.
CAUTION: The absolute maximum V+ to V- differential voltage is 13.0V. Typical ±6V or +12V supplies
with ±10% tolerances can be as high as 13.2V. This
voltage can damage the MAX4536/MAX4537/MAX4538.
Even ±5% tolerance supplies may have overshoot or
noise spikes that exceed 13.0V.
Single Supplies
The MAX4536/MAX4537/MAX4538 operate from single
supplies between +2.0V and +12V when V- is connected to GND. All of the bipolar precautions must be
observed.
High-Frequency Performance
In 50Ω systems, signal response is reasonably flat up
to 50MHz (see Typical Operating Characteristics).
Above 20MHz, the on-response has several minor
peaks that are highly layout dependent. The problem
with high-frequency operation is not in turning the
switch on, but in turning it off. The off-state switch acts
like a capacitor and passes higher frequencies with
less attenuation. At 10MHz, off-isolation is about -44dB
in 50Ω systems, becoming worse (approximately 20dB
per decade) as frequency increases. Higher circuit
impedances also make off-isolation worse. Adjacent
channel attenuation is about 3dB above that of a bare
IC socket, and is due entirely to capacitive coupling.
_______________________________________________________________________________________
Quad, Low-Voltage,
SPST Analog Switches with Enable
MAX4536
MAX4537
MAX4538
SWITCH
INPUT
V+
SWITCH
OUTPUT
V+
NO
or NC
COM
V COM
VOUT
RL
300Ω
IN, EN
GND
LOGIC
INPUT
LOGIC
INPUT
50%
0V
CL
35pF
t OFF
VOUT
VSWITCH
OUTPUT
V-
0V
0V
0.9 x V0UT
0.9 x VOUT
t ON
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
RL
VOUT = VCOM
RL + RON
(
t r < 20ns
t f < 20ns
+3V
LOGIC INPUT WAVEFORMS INVERTED FOR EN AND SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
)
Figure 1. Switching Time
V+
VCOM1 = +3V
VCOM2 = +3V
V+
COM1
NO1
RL2
GND
RL1
VOUT2
IN
LOGIC
INPUT
50%
VOUT1
N02
COM2
+3V
LOGIC
INPUT
MAX4538
0V
CL1
SWITCH
OUTPUT 1
(VOUT1)
CL2
0.9 x V0UT1
0V
SWITCH
OUTPUT 2
(VOUT2)
VV-
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
0.9 x VOUT2
0V
RL = 300Ω
CL = 35pF
tD
tD
Figure 2. Break-Before-Make Interval (MAX4538 only)
V+
MAX4536
MAX4537
MAX4538
∆VOUT
V+
RGEN
VOUT
COM
NC or
NO
VOUT
IN
OFF
CL
V GEN
GND
IN
V-
VVIN = +3V
IN
OFF
ON
ON
OFF
OFF
Q = (∆V OUT )(C L )
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 3. Charge Injection
_______________________________________________________________________________________
9
MAX4536/MAX4537/MAX4538
______________________________________________Test Circuits/Timing Diagrams
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
V+
10nF
SIGNAL
GENERATOR 0dBm
COM
MAX4536
MAX4537
MAX4538
SIGNAL
GENERATOR 0dBm
V+
0V or
2.4V
IN
NC
COM
or NO
ANALYZER
V-
N01
IN1
IN2
COM2
N02
Figure 5. Crosstalk
V+
10nF
MAX4536
MAX4537
MAX4538
V+
10nF
V+
COM
0V or
2.4V
IN
CAPACITANCE
METER
IN
f = 1MHz
NC
or NO
GND
V-
10nF
0V or
2.4V
NC
or NO
GND
V-
Figure 6. Channel-Off Capacitance
MAX4536
MAX4537
MAX4538
V+
COM
10
10nF
V-
Figure 4. Off Isolation
f = 1MHz
NC
V-
RL
V-
CAPACITANCE
METER
50Ω
0V or 2.4V
GND
10nF
RL
V+
COM1
0V or 2.4V
ANALYZER
GND
MAX4536
MAX4537
MAX4538
V+
10nF
V-
V-
Figure 7. Channel-On Capacitance
______________________________________________________________________________________
10nF
Quad, Low-Voltage,
SPST Analog Switches with Enable
PART
TEMP. RANGE
_____________________Chip Topography
PIN-PACKAGE
A
MAX4537CPE
0°C to +70°C
16 Plastic DIP
MAX4537CSE
MAX4537CEE
MAX4537C/D
MAX4537EPE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
16 QSOP
Dice*
16 Plastic DIP
MAX4537ESE
MAX4537EEE
MAX4538CPE
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
16 Narrow SO
16 QSOP
16 Plastic DIP
COM2
MAX4538CSE
MAX4538CEE
MAX4538C/D
MAX4538EPE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
16 Narrow SO
16 QSOP
Dice*
16 Plastic DIP
IN3
MAX4538ESE
MAX4538EEE
-40°C to +85°C
-40°C to +85°C
16 Narrow SO
16 QSOP
*Contact factory for availability.
COM1 V+
IN1
IN4
B
COM4
0.054"
(1.37mm)
D
IN2
C
EN GND V- COM3
0.053"
(1.35mm)
MAX4536
MAX4537
MAX4538
PIN
NAME
PIN
NAME
PIN
NAME
A
NO1
A
NC1
A
NO1
B
NO2
B
NC2
B
NC2
C
NO3
C
NC3
C
NC3
D
NO4
D
NC4
D
NO4
TRANSISTOR COUNT: 121
SUBSTRATE IS INTERNALLY CONNECTED TO V+
______________________________________________________________________________________
11
MAX4536/MAX4537/MAX4538
__Ordering Information (continued)
MAX4536/MAX4537/MAX4538
Quad, Low-Voltage,
SPST Analog Switches with Enable
________________________________________________________Package Information
DIM
A
A1
A2
B
C
D
E
e
H
h
L
N
S
α
D
A
e
A1
B
S
E
INCHES
MILLIMETERS
MAX
MIN
MIN
MAX
0.068
0.061
1.55
1.73
0.004 0.0098 0.127
0.25
0.061
0.055
1.40
1.55
0.012
0.008
0.20
0.31
0.0075 0.0098
0.19
0.25
SEE VARIATIONS
0.157
0.150
3.81
3.99
0.025 BSC
0.635 BSC
0.244
0.230
5.84
6.20
0.016
0.010
0.25
0.41
0.035
0.016
0.41
0.89
SEE VARIATIONS
SEE VARIATIONS
8°
0°
0°
8°
DIM PINS
21-0055A
H
QSOP
QUARTER
SMALL-OUTLINE
PACKAGE
h x 45°
α
A2
16
16
20
20
24
24
28
28
D
S
D
S
D
S
D
S
N
E
L
C
DIM
D
0°-8°
A
0.101mm
0.004in.
e
B
A1
E
C
L
Narrow SO
SMALL-OUTLINE
PACKAGE
(0.150 in.)
H
INCHES
MILLIMETERS
MIN
MAX MIN
MAX
0.189 0.196 4.80
4.98
0.0020 0.0070 0.05
0.18
0.337 0.344 8.56
8.74
0.0500 0.0550 1.27
1.40
0.337 0.344 8.56
8.74
0.0250 0.0300 0.64
0.76
0.386 0.393 9.80
9.98
0.0250 0.0300 0.64
0.76
A
A1
B
C
E
e
H
L
INCHES
MAX
MIN
0.069
0.053
0.010
0.004
0.019
0.014
0.010
0.007
0.157
0.150
0.050
0.244
0.228
0.050
0.016
DIM PINS
D
D
D
8
14
16
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
3.80
4.00
1.27
5.80
6.20
0.40
1.27
INCHES
MILLIMETERS
MIN MAX
MIN
MAX
0.189 0.197 4.80
5.00
0.337 0.344 8.55
8.75
0.386 0.394 9.80 10.00
21-0041A
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.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 1996 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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