19-1424; Rev 0; 1/99
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
Features
The MAX4589 low-voltage, dual 2-channel multiplexer is
designed for RF and video signal processing at frequencies up to 200MHz in 50Ω and 75Ω systems. On-chip
functions are controlled through either a parallel interface
or an SPI™/QSPI™/MICROWIRE™ serial interface.
Each channel of the MAX4589 is designed using a “T”
switch configuration, ensuring excellent high-frequency
off-isolation. The MAX4589 has low on-resistance of
60Ω max, with an on-resistance match across all channels of 4Ω max. Additionally, on-resistance is flat
across the specified signal range (2Ω max). The offleakage current is under 1nA at TA = +25°C, and less
than 10nA at TA = +85°C.
The MAX4589 operates from single +2.7V to +12V or
dual ±2.7V to ±6V supplies. When operating with a
positive supply of +5V, the inputs maintain TTL/CMOSlevel compatibility. The MAX4589 is available in 20-pin
DIP, wide SO, and SSOP packages.
♦ Low Insertion Loss: < -2.5dB up to 100MHz
Applications
♦ Rail-to-Rail®‚ Bidirectional Signal Handling
♦ High Off-Isolation: -74dB at 10MHz
♦ Low Crosstalk: < -70dB up to 10MHz
♦ 20MHz -0.1dB Signal Bandwidth
♦ 200MHz -3dB Signal Bandwidth
♦ 60Ω (max) On-Resistance with ±5V Supplies
♦ 4Ω (max) On-Resistance Matching with ±5V
Supplies
♦ 2Ω (max) On-Resistance Flatness with ±5V
Supplies
♦ +2.7V to +12V Single-Supply Operation
±2.7V to ±6V Dual-Supply Operation
♦ Low Power Consumption: ±2kV ESD Protection per Method 3015.7
High-Speed Data Acquisition
♦ TTL/CMOS-Compatible Inputs with VL = +5V
Automatic Test Equipment
Networking
Ordering Information
Pin Configuration
TOP VIEW
GND 1
MAX4589
COM1 2
20 SER/PAR
19 COM2
V+ 3
18 V-
NO1 4
17 NO3
GND 5
16 GND
NO2 6
15 NO4
2/4 7
PART
TEMP. RANGE
MAX4589CAP
0°C to +70°C
MAX4589CWP
MAX4589CPP
MAX4589EAP
MAX4589EWP
MAX4589EPP
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 SSOP
20 Wide SO
20 Plastic DIP
20 SSOP
20 Wide SO
20 Plastic DIP
14 VL
RS 8
13 DIN
CONTROL LOGIC
LE/CS 9
12 EN
A1/SCLK 10
11 A0/DOUT
SSOP/SO/DIP
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX4589
General Description
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND)
V+ ...........................................................................-0.3V to +13V
VL ......................-0.3V to (V+ + 0.3V) or 7V (whichever is lower)
V- ...........................................................................-13V to +0.3V
V+ to V-...................................................................-0.3V to +13V
VNO_, VCOM_ to GND (Note 1)..............(V- - 0.3V) to (V+ + 0.3V)
2/4, RS, LE, CS, A1/SCLK,
A0/DOUT, EN, DIN, SER/PAR to GND ......-0.3V to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±20mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)...................................±40mA
ESD per Method 3015.7.......................................................±2kV
Continuous Power Dissipation (TA = +70°C)
SSOP (derate 9.1mW/°C above +70°C)............................727mW
Wide SO (derate 10mW/°C above +70°C)........................800mW
Plastic DIP (derate 11.1mW/°C above +70°C) .................889mW
Operating Temperature Ranges
MAX4589C_ P ......................................................0°C to +70°C
MAX4589E_ P ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Voltages on these pins exceeding V+ or V- are clamped by internal diodes. Limit forward diode 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—Dual Supplies
(V+ = VL = +4.5V to +5.5V, V- = -4.5V to -5.5V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C, V+ = VL = +5V, V- = -5V.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
60
Ω
ANALOG SWITCH
Analog Signal Range (Note 3)
On-Resistance
On-Resistance Match Between
Channels (Note 4)
VCOM_, VNO_
V-
RON
V+ = 5V, V- = -5V,
VNO_ = ±2V, ICOM_ = 4mA
+25°C
∆RON
V+ = 5V, V- = 5V,
VNO_ = ±2V, ICOM_ = 4mA
+25°C
V+ = 5V; V- = -5V;
VNO_= 1V, 0, -1V;
ICOM_ = 4mA
+25°C
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V,
VNO_ = 4.5V
+25°C
-1
C, E
-10
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V,
VNO_ = 4.5V
+25°C
-2
C, E
-20
V+ = 5.5V, V- = -5.5V,
VCOM_ = ±4.5V,
VNO_ = floating
+25°C
-2
C, E
-20
2.4
On-Resistance Flatness
(Note 5)
RFLAT(ON)
NO_ Off-Leakage Current
(Note 6)
INO_ (OFF)
±
COM_ Off-Leakage Current
(Note 6)
ICOM_ (OFF)
COM_ On-Leakage Current
(Note 6)
ICOM_ (ON)
±
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
40
C, E
75
1
C, E
4
5
0.5
C, E
2.5
Ω
Ω
3
0.01
1
nA
10
0.01
2
nA
20
0.01
2
nA
20
4, RS, LE/CS, A1/SCLK, AO/DOUT, EN, DIN, SER/PAR)
LOGIC INPUTS (2/4
Input Logic Threshold High
VINH
C, E
Input Logic Threshold Low
VINL
C, E
1.5
Input Threshold Hysteresis
Input Current
2
1.7
V
0.8
V
1
µA
0.2
IIN
VIN_ = 0 or VL
C, E
-1
0.03
_______________________________________________________________________________________
V
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
(V+ = VL = +4.5V to +5.5V, V- = -4.5V to -5.5V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C, V+ = VL = +5V, V- = -5V.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
0.4
V
LOGIC OUTPUT (SERIAL INTERFACE)
DOUT Logic Low Output
VOL
ISINK = 3.2mA
C, E
DOUT Logic High Output
VOH
ISOURCE = -1mA
C, E
VL - 1
V
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
VNO_ = 3V, V+ = 4.5V,
V- = -4.5V, Figure 1
+25°C
Turn-Off Time
tOFF
VNO_ = 3V, V+ = 4.5V,
V- = -4.5V, Figure 1
+25°C
Break-Before-Make Time Delay
(Note 3)
tBBM
VNO_ = 3V, V+ = 5.5V,
V- = -5.5V, Figure 2
C, E
Q
CL = 1.0nF, VNO_ = 0,
RS = 0, Figure 3
Charge Injection
NO_ Off-Capacitance
380
C, E
550
600
150
C, E
300
350
10
ns
ns
180
ns
+25°C
15
pC
CNO_(OFF)
VNO_ = 0, fIN = 1MHz, Figure 4
+25°C
2
pF
COM_ Off-Capacitance
CCOM_(OFF)
VCOM_ = 0, fIN = 1MHz, Figure 4
+25°C
4
pF
COM_ On-Capacitance
CCOM_(ON)
VCOM_ = 0, fIN = 1MHz, Figure 4
+25°C
6
pF
Off-Isolation (Note 7)
VISO
VNO_ = 1VRMS, f = 10MHz,
all channels off, Figure 5
+25°C
-74
dB
Channel-to-Channel Crosstalk
VCT
VNO_ = 1VRMS, f = 10MHz,
Figure 5
+25°C
-70
dB
-3dB Bandwidth
BW
Figure 5
-0.1dB Bandwidth
BW
Figure 5
A_, EN to LE Rise Setup Time
tDS
Figure 6
C, E
80
ns
A_, EN to LE Rise Hold Time
tDH
Figure 6
C, E
0
ns
tL
Figure 6
C, E
80
ns
RS Low Pulse Width
SERIAL-INTERFACE TIMING
tRS
Figure 6
C, E
80
ns
Operating Frequency
fCLK
Figure 7
C, E
SCLK Pulse Width High
tCH
Figure 7
C, E
80
ns
SCLK Pulse Width Low
tCL
Figure 7
C, E
80
ns
DIN to SCLK Rise Setup Time
tDS
Figure 7
C, E
60
ns
DIN to SCLK Rise Hold Time
tDH
Figure 7
C, E
0
ns
2-channel mode
4-channel mode
2-channel mode
4-channel mode
200
+25°C
MHz
150
20
+25°C
MHz
15
PARALLEL-INTERFACE TIMING
LE Low Pulse Width
6.25
MHz
_______________________________________________________________________________________
3
MAX4589
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = VL = +4.5V to +5.5V, V- = -4.5V to -5.5V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C, V+ = VL = +5V, V- = -5V.) (Note 2)
PARAMETER
SYMBOL
TA
MIN
CS Fall to SCLK Rise Setup Time
tCSS0
Figure 7
CONDITIONS
C, E
50
ns
CS Fall to SCLK Rise Hold Time
tCSS1
Figure 7
C, E
80
ns
CS Rise to SCLK Rise Hold Time
tCSH1
Figure 7
C, E
0
ns
CS Rise to SCLK Rise Setup
Time
tCSS1
Figure 7
C, E
80
ns
SCLK Rise to DOUT Valid
tDO
CL = 50pF, Figure 7
C, E
RS Low Pulse Width
POWER SUPPLY
tRS
Figure 6
C, E
Power-Supply Range
TYP
MAX
150
80
±2.7
±6
VL
+2.7
V+
I+
V- = -5.5V, V+ = 5.5V
V- Supply Current
I-
V- = -5.5V, V+ = 5.5V
VL Supply Current
IL
VL = 5.5V, all VIN_= 0 or VL
+25°C
-1
C, E
-10
+25°C
-1
C, E
-10
C, E
-10
ns
ns
V+, V-
V+ Supply Current
UNITS
0.0001
1
10
0.0001
1
10
2
10
V
µA
µA
µA
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = VL = +4.5V to +5.5V, V- = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA
= +25°C, V+ = VL = +5V.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
120
Ω
ANALOG SWITCH
Analog Signal Range (Note 3)
On-Resistance
On-Resistance Match Between
Channels (Note 4)
VCOM_, VNO
0
RON
V+ = 5V, VNO_ = 3V,
ICOM_ = 4mA
+25°C
∆RON
V+ = 5V, VNO_ = 3V,
ICOM_ = 4mA
+25°C
80
C, E
150
1
C, E
On-Resistance Flatness
(Note 5)
RFLAT(ON)
V+ = 5V; ICOM_ = 4mA;
VNO_ = 2V, 3V, 4V
+25°C
NO_ Off-Leakage Current
(Notes 6, 8)
INO_ (OFF)
V+ = 5.5V; VCOM_ = 4.5V, 1V;
VNO_ = 1V, 4.5V
+25°C
-1
C, E
-10
COM_ Off-Leakage Current
(Notes 6, 8)
ICOM_ (OFF)
V+ = 5.5V; VCOM_ = 4.5V, 1V;
VNO_ = 1V, 4.5V
+25°C
-2
C, E
-20
COM_ On-Leakage Current
(Notes 6, 8)
ICOM_ (ON)
V+ = 5.5V; VCOM_ = 4.5V 1V;
VNO_ = 4.5V, 1V, or floating
+25°C
-2
C, E
-20
4
8
10
4
C, E
10
12
0.005
1
10
0.005
2
20
0.005
_______________________________________________________________________________________
2
20
Ω
Ω
nA
nA
nA
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
(V+ = VL = +4.5V to +5.5V, V- = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA
= +25°C, V+ = VL = +5V.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
2.4
1.7
MAX
UNITS
4, RS, LE/CS, A1/SCLK, AO/DOUT, EN, DIN, SER/PAR
LOGIC INPUTS (2/4
Input Logic Threshold High
VINH
C, E
Input Logic Threshold Low
VINL
C, E
1.5
Input Threshold Hysteresis
Input Current
V
0.8
V
1
µA
0.4
V
0.2
IIN
VIN = 0 or VL
C, E
-1
V
LOGIC OUTPUT (SERIAL INTERFACE)
DOUT Logic Low Output
VOL
ISINK = 3.2mA
C, E
DOUT Logic High Output
VOH
ISOURCE = -1mA
C, E
VL - 1
V
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
tON
VNO__ = 3V, V+ = 4.5V,
Figure 1
+25°C
Turn-Off Time
tOFF
VNO__ = 3V, V+ = 4.5V,
Figure 1
+25°C
Break-Before-Make Time Delay
(Note 3)
tBBM
VNO__ = 3V, V+ = 5.5V,
Figure 2
Charge Injection
Q
550
C, E
150
C, E
C, E
800
900
300
350
10
ns
ns
200
ns
CL = 1.0nF, VNO_ = 2.5V,
RS = 0, Figure 3
+25°C
5
pC
Off-Isolation
VISO
VNO_ = 1VRMS, f = 10MHz,
all channels off, Figure 5
+25°C
-65
dB
Channel-to-Channel Crosstalk
VCT
VNO_ = 1VRMS, f = 10MHz,
Figure 5
+25°C
-70
dB
-3dB Bandwidth
BW
Figure 5
-0.1dB Bandwidth
BW
Figure 5
A_, EN to LE Rise Setup Time
tDS
Figure 6
C, E
A_, EN to LE Rise Hold Time
2-channel mode
4-channel mode
2-channel mode
4-channel mode
100
+25°C
75
10
+25°C
7
MHz
MHz
PARALLEL-INTERFACE TIMING
80
ns
tDH
Figure 6
C, E
0
ns
LE Low Pulse Width
tL
Figure 6
C, E
80
ns
RS Low Pulse Width
tRS
Figure 6
C, E
80
ns
_______________________________________________________________________________________
5
MAX4589
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = VL = +4.5V to +5.5V, V- = 0, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA
= +25°C, V+ = VL = +5V.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
6.25
ns
SERIAL-INTERFACE TIMING
Operating Frequency
fCLK
Figure 7
C, E
SCLK Pulse Width High
tCH
Figure 7
C, E
80
ns
SCLK Pulse Width Low
tCL
Figure 7
C, E
80
ns
DIN to SCLK Rise Setup Time
tDS
Figure 7
C, E
60
ns
DIN to SCLK Rise Hold Time
tDH
Figure 7
C, E
0
ns
CS Fall to SCLK Rise Setup Time
tCSS0
Figure 7
C, E
50
ns
CS Rise to SCLK Rise Hold Time
tCSH1
Figure 7
C, E
0
ns
CS Rise to SCLK Rise Setup
Time
tCSS1
Figure 7
C, E
80
ns
tCSS1
80
CS Fall to SCLK Rise Hold Time
SCLK Rise to DOUT Valid
RS Low Pulse Width
POWER SUPPLY
Figure 7
C, E
tDO
CL = 50pF, Figure 7
C, E
tRS
Figure 6
C, E
V+
Power-Supply Range
VL
ns
150
80
ns
2.7
12
V+ ≤ 6.5V
2.7
V+
V+ > 6.5V
2.7
6.5
V+ Supply Current
I+
V+= 5.5V, VIN = 0 or VL
VL Supply Current
IL
VL = 5.5V, all VIN_ = 0 or VL
ns
+25°C
-1
1
C, E
-10
10
C, E
-10
2
10
V
V
µA
µA
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = VL = +2.7V to +3.6V, V- = 0, VINH = +2V, VINL = +0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA =
+25°C, V+ = VL = +3V.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
V+
V
240
350
Ω
ANALOG SWITCH
Analog Signal Range (Note 3)
On-Resistance
VCOM_,VNO
RON
0
V+ = 2.7V, VNO_ = 1V,
ICOM_ = 1mA
+25°C
C, E
450
4, RS, LE/CS, A1/SCLK, AO/DOUT, EN, DIN, SER/PAR
LOGIC INPUT (2/4
Input Logic Threshold High
VINH
Input Logic Threshold Low
VINL
Input Current
IIN
C, E
2.0
V
C, E
VIN_ = 0 or VL
C, E
-1
0.5
V
1
µA
SWITCH DYNAMIC CHARACTERISTICS
µA
Turn-On Time
tON
VNO__ = 1.5V, V+ = 2.7V,
Figure 1
Turn-Off Time
tOFF
VNO__ = 1.5V, V+ = 2.7V,
Figure 1
Break-Before-Make Time Delay
(Note 3)
tBBM
VNO__ = 1.5V, V+ = 3.6V,
Figure 2
6
+25°C
+25°C
700
C, E
1200
250
C, E
C, E
1000
400
500
10
350
_______________________________________________________________________________________
ns
ns
ns
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
(V+ = VL = +2.7V to +3.6V, V- = 0, VINH = +2V, VINL = +0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA =
+25°C, V+ = VL = +3V.)
PARAMETER
SYMBOL
CONDITIONS
TA
MIN
TYP
MAX
UNITS
200
ns
PARALLEL-INTERFACE TIMING
A_, EN to LE Rise Setup Time
tDS
Figure 6
C, E
A_, EN to LE Rise Hold Time
tDH
Figure 6
C, E
0
ns
LE Low Pulse Width
tL
Figure 6
C, E
200
ns
RS Low Pulse Width
tRS
Figure 6
C, E
80
ns
Operating Frequency
fCLK
Figure 7
C, E
SCLK Pulse Width High
tCH
Figure 7
C, E
200
ns
SCLK Pulse Width Low
tCL
Figure 7
C, E
200
ns
DIN to SCLK Rise Setup Time
tDS
Figure 7
C, E
100
ns
DIN to SCLK Rise Hold Time
tDH
Figure 7
C, E
0
ns
CS Fall to SCLK Rise Setup Time
tCSS0
Figure 7
C, E
100
ns
CS Rise to SCLK Rise Hold Time
tCSH1
Figure 7
C, E
0
ns
CS Rise to SCLK Rise Setup
Time
tCSS1
Figure 7
C, E
200
ns
tCSS1
200
SERIAL-INTERFACE TIMING
CS Fall to SCLK Rise Hold Time
SCLK Rise to DOUT Valid
2.1
Figure 7
C, E
tDO
CL = 50pF, Figure 7
C, E
RS Low Pulse Width
POWER SUPPLY
tRS
Figure 6
C, E
80
V+ Supply Current
I+
V+ = 3.6V, VIN = 0 or VL
+25°C
-1
1
C, E
-10
10
VL Supply Current
IL
VL = 3.6V, all VIN = 0 or VL
C, E
-10
MHz
ns
250
ns
ns
1
10
µA
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 6: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at TA = +25°C.
Note 7: Off-isolation = 20log10 [VCOM_ / VNO_], VCOM_ = output, VNO_ = input to off switch.
Note 8: Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
Note 2:
Note 3:
Note 4:
Note 5:
_______________________________________________________________________________________
7
MAX4589
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
Typical Operating Characteristics
(V+ = VL = +5V, V- = -5V, TA = +25°C, unless otherwise specified.)
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
V± = ±2.5V
80
V- = 0
200
55
V+ = +2.5V
50
V± = ±5V
V+ = +3.0V
100
V+ = +5V
V+ = +9V
50
30
TA = -40°C
V+ = +12V
25
10
20
0
0
-3
-2
-1
0
1
2
3
4
5
0
2
4
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
12
-5
TA = +85°C
TA = +25°C
TA = -40°C
40
-3
-2
-1 0 1
VCOM (V)
ON-LEAKAGE
10
OFF-LEAKAGE
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VCOM (V)
-40
tON, tOFF vs. SUPPLY VOLTAGE
0
20
40
60
200
SINGLE SUPPLY
-5
tOFF
tON
200
tOFF
3.0
3.5
4.0
DUAL SUPPLY VOLTAGE (±V)
4.5
5.0
-1
0
1
2
1µ
IL
10n
1n
I+, I-
100p
10p
1p
0.1p
0
2.5
-2
10µ
CURRENT (A)
250
50
2.0
-3
100n
100
0
-4
POWER-SUPPLY CURRENT
vs. TEMPERATURE
150
100
5
10
tON, tOFF vs. TEMPERATURE
400
TIME (ns)
300
4
15
VCOM (V)
300
tON
3
DUAL SUPPLIES
20
TEMPERATURE (°C)
350
400
5
25
80
MAX4589toc08
500
-20
450
MAX4589toc07
600
4
0
1
0
3
30
5
0
2
35
20
8
-4
CHARGE INJECTION
vs. VCOM
100
LEAKAGE CURRENT (pA)
100
RON (Ω)
10
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4589toc04
120
60
8
VCOM (V)
VCOM (V)
80
6
CHARGE INJECTION (pC)
-4
MAX4589toc05
-5
35
V+ = +3.6V
30
20
TA = +25°C
40
MAX4589toc06
40
150
MAX4589toc09
V± = ±4V
RON (Ω)
RON (Ω)
60
50
TA = +85°C
45
V± = ±3V
70
RON (Ω)
250
MAX4589toc02
90
MAX4589toc01
100
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
MAX4589toc03
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
TIME (ns)
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
-40
-20
0
20
40
TEMPERATURE (°C)
60
80
-40
-20
0
20
40
TEMPERATURE (°C)
_______________________________________________________________________________________
60
80
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
INSERTION LOSS, OFF-ISOLATION,
AND CROSSTALK vs. FREQUENCY
(SINGLE SUPPLY)
INSERTION LOSS, OFF-ISOLATION,
AND CROSSTALK vs. FREQUENCY
(DUAL SUPPLIES)
AMPLITUDE (dB)
-20
RS = 75Ω
RL = 600Ω
-30
0
-40
-50
INSERTION LOSS
-10
AMPLITUDE (dB)
ON LOSS
MAX4589toc12
0
-10
10
MAX4589toc11
10
-20
RS = 75Ω
RL = 600Ω
-30
-40
-50
CROSSTALK
-60
-60
OFF-ISOLATION
-70
-70
CROSSTALK
-80
OFF-ISOLATION
-80
-90
-90
100k
1M
10M
FREQUENCY (Hz)
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (MHz)
_______________________________________________________________________________________
9
MAX4589
Typical Operating Characteristics (continued)
(V+ = VL = +5V, V- = -5V, TA = +25°C, unless otherwise specified.)
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
Pin Description
PIN
NAME
1, 5, 16
GND
2
COM1
3
V+
4
NO1
Normally Open Analog Input Terminal. See Truth Tables.
6
NO2
Normally Open Analog Input Terminal. See Truth Tables.
7
2/4
Multiplexer Configuration Control. Connect to VL to select dual 2-channel mode. Connect to GND for single
4-channel multiplexer operation. See Truth Tables.
8
RS
Active-Low Reset Input. In serial mode, drive RS low to force the latches and shift registers to the power-on
reset state and force all switches open. In parallel mode, drive RS low to force the latches to the power-on
reset state and force switches open. See Truth Tables.
9
LE/CS
In parallel mode this pin is the transparent Latch Enable. In the serial mode, this pin is the Chip-Select input.
See Truth Tables.
10
A1/SCLK
In parallel mode, A1/SCLK is the most significant address bit. If 2/4 is high, A1/SCLK is ignored. In the serial
mode, A1/SCLK is the serial shift clock input. Data is loaded on the rising edge of SCLK. See Truth Tables.
11
A0/DOUT
12
EN
Switch Enable. Drive EN low to force all channels off. Drive high to allow normal multiplexer operation.
Operates asynchronously in serial mode. In parallel mode, EN is latched when the LE signal is high.
13
DIN
Serial Data Input. In serial mode, data is loaded on the rising edge of SCLK. Connect to VL or GND in
parallel mode.
14
VL
15
NO4
Normally Open Analog Input Terminal. See Truth Tables.
17
NO3
Normally Open Analog Input Terminal. See Truth Tables.
18
V-
19
COM2
20
SER/PAR
10
FUNCTION
Ground. Connect to ground plane. See Grounding section.
Analog Switch Common Terminal. See Truth Tables.
Analog Positive Supply Voltage Input
In parallel mode, this pin is the least significant address bit. In serial mode, DOUT is the output from the
internal 4-bit shift register. DOUT is intended for daisy-chain cascading. DOUT is not three-stated by CS.
See Serial Operation.
Logic Supply Input. Powers the DOUT driver and other digital circuitry. VL sets both the input threshold
levels and the output logic levels.
Analog Negative Supply Voltage Input. Connect to GND for single-supply operation.
Analog Switch Common Terminal. See Truth Tables.
Interface Select Input. Drive low for parallel data interface operation. Drive high for serial data interface
operation and to enable the DOUT driver.
______________________________________________________________________________________
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
MAX4589
V+
V+
LE/CS
NO_
50%
VNO_
50%
EN
MAX4589
COM_
EN
90%
VOUT
300Ω
30pF
GND
V-
90%
VOUT
tOFF
tON
VSWITCH IS TIMED FROM 50% LEVEL OF DIGITAL SIGNAL.
Figure 1. Turn-On/Turn-Off Time
V+
LE/CS
SER/PAR
NO_
V+
A0
NO_
VNO_
MAX4589
VOUT
COM_
A0
90%
90%
VOUT
300Ω
30pF
GND
GND
V-
tBBM
V-
Figure 2. Break-Before-Make Time Delay
V+
LE/CS
SER/PAR
V+
NO_
VNO_
1nF
10µF
EN
VOUT
VOUT
MAX4589
EN
COM_
CL
GND
VV-
∆VOUT
Q = ∆VOUT · CL
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Figure 3. Charge Injection
______________________________________________________________________________________
11
MAX4589
Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
V+
V+
V+
NO_
FLOATING
V+
MAX4589
NO_
GND
MAX4589
COM_
COM_
1MHz
CAPACITANCE
ANALYZER
GND
V-
1MHz
CAPACITANCE
ANALYZER
FLOATING
GND
V-
V-
V-
Figure 4. NO_, COM_ Capacitance
V+
V+
NO_
50Ω
49.9Ω
56Ω
MAX4589
+
-
NO_
MEASURE
NODE
24.9Ω
50Ω
COM_
V-
MEASURE
NODE
560Ω
50Ω
VALL SIGNALS NORMALIZED TO VCOM = 0dB.
.
Figure 5. Off-Isolation, Crosstalk, and Bandwidth
tL
LE
tDS
tDH
A0, A1, EN
MAX4589
tRS
RS
NOTE: ALL INPUT SIGNALS ARE SPECIFIED WITH tR AND tF
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