19-1232; Rev 0; 6/97
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
_______________General Description
The MAX4545/MAX4546/MAX4547 are low-voltage
T-switches designed for switching RF and video signals
from DC to 300MHz in 50Ω and 75Ω systems. The
MAX4545 contains four normally open single-pole/single-
throw (SPST) switches. The MAX4546 contains two dual
SPST switches (one normally open, one normally closed.)
The MAX4547 contains two single-pole/double-throw
(SPDT) switches.
Each switch is constructed in a “T” configuration, ensuring
excellent high-frequency off isolation and crosstalk of
-80dB at 10MHz. They can handle Rail-to-Rail
®
analog sig-
nals in either direction. On-resistance (20Ω max) is
matched between switches to 1Ω max and is flat (0.5Ω
max) over the specified signal range, using ±5V supplies.
The off leakage current is less than 5nA at +25°C and
50nA at +85°C.
These CMOS switches can operate with dual power sup-
plies ranging from ±2.7V to ±6V or a single supply
between +2.7V and +12V. All digital inputs have 0.8V/2.4V
logic thresholds, ensuring both TTL- and CMOS-logic com-
patibility when using ±5V or a single +5V supply.
____________________________Features
o
Low 50Ω Insertion Loss: -1dB at 100MHz
o
High 50Ω Off Isolation: -80dB at 10MHz
o
Low 50Ω Crosstalk: -80dB at 10MHz
o
DC to 300MHz -3dB Signal Bandwidth
o
20Ω Signal Paths with ±5V Supplies
o
1Ω Signal-Path Matching with ±5V Supplies
o
0.5Ω Signal-Path Flatness with ±5V Supplies
o
±2.7V to ±6V Dual Supplies
+2.7V to +12V Single Supply
o
Low Power Consumption: <1µW
o
Rail-to-Rail Bidirectional Signal Handling
o
Pin Compatible with Industry-Standard DG540,
DG542, DG643
o
>2kV ESD Protection per Method 3015.7
o
TTL/CMOS-Compatible Inputs
with Single +5V or ±5V
MAX4545/MAX4546/MAX4547
________________________Applications
RF Switching
Video Signal Routing
High-Speed Data Acquisition
Test Equipment
ATE Equipment
Networking
TOP VIEW
IN1 1
COM1 2
GND1 3
N01 4
V- 5
GND5 6
N04 7
GND4 8
COM4 9
IN4 10
20 IN2
19 COM2
18 GND2
17 NO2
16 V+
IN1 1
COM1 2
GND1 3
N01 4
V- 5
NC4 6
GND4 7
COM4 8
______________Ordering Information
PART
MAX4545CPP
MAX4545CWP
TEMP. RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
20 Plastic DIP
20 Wide SO
Ordering Information continued at end of data sheet.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
MAX4546
MAX4547
16 IN2
15 COM2
14 GND2
13 NO2
12 V+
11 NC3
10 GND3
9 COM3
IN1 1
N01 2
V- 3
GND1 4
COM1 5
GND4 6
V+ 7
NC1 8
16 N02
15 V+
14 GND2
13 COM2
12 GND3
11 V-
10 NC2
9 IN2
MAX4545
15 GND6
14 N03
13 GND3
12 COM3
11 IN3
DIP/SO/SSOP
MAX4545
LOGIC
SWITCH
SWITCHES SHOWN
FOR LOGIC “0” INPUT
0
1
OFF
ON
LOGIC
0
1
DIP/SO/QSOP
MAX4546
1, 2
OFF
ON
3, 4
ON
OFF
LOGIC
0
1
DIP/SO/QSOP
MAX4547
NO-COM
OFF
ON
NC-COM
ON
OFF
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
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
MAX4545/MAX4546/MAX4547
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
V+ ...........................................................................-0.3V, +13.0V
V- ............................................................................-13.0V, +0.3V
V+ to V-...................................................................-0.3V, +13.0V
All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±25mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)..................................±50mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation (T
A
= +70°C) (Note 2)
16-Pin Plastic DIP
(derate 10.53mW/°C above +70°C) ..........................842mW
16-Pin Narrow SO
(derate 8.70mW/°C above +70°C) ............................696mW
16-Pin QSOP (derate 8.3mW/°C above +70°C).......... 667mW
20-Pin Plastic DIP (derate 8.0mW/°C above +70°C) ...640mW
20-Pin Wide SO (derate 10.00mW/°C above +70°C) .. 800mW
20-Pin SSOP (derate 8.0mW/°C above +70°C) .......... 640mW
Operating Temperature Ranges
MAX454_C_ E .....................................................0°C to +70°C
MAX454_E_ E ..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
Voltages on all other pins exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum cur-
rent 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+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V
INL
= 0.8V, V
INH
= 2.4V, V
GND_
= 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
Signal-Path On-Resistance
Signal-Path On-Resistance Match
Between Channels (Note 4)
Signal-Path On-Resistance
Flatness (Note 5)
NO_, NC_ Off Leakage Current
(Note 6)
COM_ Off Leakage Current
(Note 6)
COM_ On Leakage Current
(Note 6)
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
V
IN_H
V
IN_L
I
INH_
, I
INL_
V
IN_
= 0.8V or 2.4V
C, E
C, E
C, E
0.8
-1
1.5
1.5
0.03
1
2.4
V
V
µA
V
COM_
,
V
NO_
,V
NC_
R
ON
∆R
ON
R
FLAT(ON)
I
NO_(OFF)
,
I
NC_(OFF)
I
COM_(OFF)
I
COM_(ON)
(Note 3)
V+ = 4.5V, V- = -4.5V,
V
COM_
= ±2V, I
COM_
= 10mA
V+ = 4.5V, V- = -4.5V,
V
COM_
= ±2V, I
COM_
= 10mA
V+ = 5V; V- = -5V; V
COM_
= 1V,
0V, -1V; I
COM
= 10mA
V+ = 5.5V, V- = -5.5V,
V
COM_
= ±4.5V, V
N_
= 4.5V
V+ = 5.5V, V- = -5.5V,
V
COM_
= ±4.5V, V
N_
= 4.5V
V+ = 5.5V, V- = -5.5V,
V
COM_
= ±4.5V, V
N_
= 4.5V
±
±
±
C, E
+25°C
C, E
+25°C
C, E
+25°C
+25°C
C, E
+25°C
C, E
+25°C
C, E
-5
-50
-5
-50
-10
-100
0.04
0.02
0.3
0.02
V-
14
18
0.5
V+
20
25
1
1.25
0.5
5
50
5
50
10
100
V
Ω
Ω
Ω
nA
nA
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
MAX
UNITS
2
_______________________________________________________________________________________
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V
INL
= 0.8V, V
INH
= 2.4V, V
GND_
= 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
90
35
MAX
UNITS
MAX4545/MAX4546/MAX4547
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time Delay
(MAX4546/MAX4547 only)
Charge Injection
(Note 3)
NO_, NC_ Off Capacitance
COM_ Off Capacitance
t
ON
t
OFF
t
BBM
Q
C
N_(OFF)
V
COM_
= ±3V, V+ = 5V, V- = -5V,
Figure 4
V
COM_
= ±3V, V+ = 5V, V- = -5V,
Figure 4
V
COM_
= ±3V, V+ = 5V, V- = -5V,
Figure 5 (Note 3)
C
L
= 1.0nF, V
NO_
= 0V, RS = 0Ω,
Figure 6
V
NO_
= GND, f = 1MHz, Figure 8
MAX4545
+25°C
MAX4546
6
11.5
+25°C
11.5
17
-80
+25°C
-80
-82
-88
+25°C
+25°C
+25°C
-80
-84
300
0.004
MHz
%
dB
dB
pF
+25°C
C, E
+25°C
C, E
+25°C
+25°C
+25°C
15
40
60
6
6
pF
150
150
200
100
120
ns
ns
ns
pC
pF
V
COM_
= 0V,
C
COM_(OFF)
f = 1MHz,
Figure 8
COM_ On Capacitance
C
COM_(ON)
MAX4545
V
COM_
= V
NO_
= 0V,
MAX4546
f = 1MHz, Figure 8
MAX4547
R
L
= 50Ω,
V
COM_
= 1V
RMS
,
f = 10MHz, Figure 7
R
L
= 50Ω, V
COM_
=
1V
RMS
, f = 10MHz,
Figure 7
Figure 7, R
L
= 50Ω
V
IN
= 5Vp-p, f < 20kHz,
600Ω in and out
MAX4545
MAX4546
MAX4547
MAX4545
MAX4546
MAX4547
Off Isolation (Note 7)
V
ISO
Channel-to-Channel Crosstalk
(Note 8)
-3dB Bandwidth
Distortion
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V - Supply Current
V
CT
BW
THD+N
V+, V-
I+
I-
V+ = 5.5V, all V
IN_
= 0V or V+
V- = -5.5V
C, E
+25°C
C, E
+25°C
C, E
-6
-1
-10
-1
-10
0.05
0.05
+6
1
10
1
10
V
µA
µA
_______________________________________________________________________________________
3
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
MAX4545/MAX4546/MAX4547
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = +4.5V to +5.5V, V- = 0V, V
INL
= 0.8V, V
INH
= 2.4V, V
GND_
= 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
Signal-Path On-Resistance
Signal-Path On-Resistance
Match
NO_, NC_ Off Leakage Current
(Note 9)
COM_ Off Leakage Current
(Note 9)
COM_ On Leakage Current
(Note 9)
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
V
IN_H
V
IN_L
I
INH_
, I
INL_
V
IN_
= 0.8V or 2.4V
C, E
C, E
C, E
0.8
-1
1.5
1.5
0.03
1
2.4
V
V
µA
V
COM_
,
V
NO_
, V
NC_
R
ON
∆R
ON
I
NO_(OFF)
,
I
NC_(OFF)
I
COM_(OFF)
I
COM_(ON)
(Note 3)
V+ = 4.5V, V
COM_
= 3.5V,
I
COM_
= 1mA
V+ = 4.5V, V
COM_
= 3.5V,
I
COM_
= 1mA
V+ = 5.5V, V
COM_
= 1V,
V
N_
= 4.5V
V+ = 5.5V, V
COM_
= 1V,
V
N_
= 4.5V
V+ = 5.5V; V
COM_
= 1V, 4.5V
+25°C
+25°C
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
-5
-50
-5
-50
-10
-100
0.04
0.02
0.02
0
26
V+
40
60
2
4
5
50
5
50
10
100
V
Ω
Ω
nA
nA
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time Delay
(MAX4546/MAX4547 only)
Charge Injection
Off-Isolation
(Note 7)
Channel-to-Channel Crosstalk
(Note 8)
POWER SUPPLY
V+ Supply Current
I+
V+ = 5.5V, all V
IN_
= 0V or V+
+25°C
C, E
-1
-10
0.05
1
10
µA
t
ON
t
OFF
t
BBM
Q
V
ISO
V
CT
V
COM_
= 3V, V+ = 5V,
Figure 4
V
COM_
= 3V, V+ = 5V,
Figure 4
V
COM_
= 3V, V+ = 5V,
Figure 5 (Note 3)
C
L
= 1.0nF, V
NO
= 2.5V,
R
S
= 0Ω, Figure 6
R
L
= 50Ω, V
COM_
= 1V
RMS
,
f = 10MHz, Figure 7
R
L
= 50Ω, V
COM_
= 1V
RMS
,
f = 10MHz, Figure 7
+25°C
C, E
+25°C
C, E
+25°C
+25°C
+25°C
+25°C
20
70
25
-75
-70
40
130
250
350
100
150
ns
ns
ns
pC
dB
dB
4
_______________________________________________________________________________________
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.6V, V- = 0V, V
INL
= 0.8V, V
INH
= 2.4V, V
GND_
= 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
Signal-Path On-Resistance
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
V
IN_H
V
IN_L
I
INH_
, I
INL_
(Note 3)
(Note 3)
V
IN_
= 0.8V or 2.4V (Note 3)
C, E
C, E
C, E
0.8
-1
1.0
1.0
1
2.4
V
V
µA
V
COM_
,
V
NO_
, V
NC_
R
ON
(Note 3)
V+ = 2.7V, V
COM_
= 1V,
I
COM_
= 1mA
+25°C
+25°C
C, E
0
70
V+
120
150
V
Ω
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
MAX
UNITS
MAX4545/MAX4546/MAX4547
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time Delay
(MAX4546/MAX4547 only)
POWER SUPPLY
V+ Supply Current
V+ Supply Current
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
I+
V+ = 3.6V, all V
IN_
= 0V or V+
+25°C
C, E
-1
-10
0.05
1
10
µA
t
ON
t
OFF
t
BBM
V
COM_
= 1.5V, V+ = 2.7V,
Figure 4 (Note 3)
V
COM_
= 1.5V, V+ = 2.7V,
Figure 4 (Note 3)
V
COM_
= 1.5V, V+ = 2.7V,
Figure 5 (Note 3)
+25°C
C, E
+25°C
C, E
+25°C
15
100
50
300
600
800
150
200
ns
ns
ns
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Guaranteed by design.
∆R
ON
=
∆R
ON(MAX)
-
∆R
ON(MIN)
.
Resistance flatness is defined as the difference between the maximum and the minimum value of on-resistance as mea-
sured over the specified analog signal range.
Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.
Off isolation = 20log
10
[V
COM
/ (V
NC
or V
NO
)], V
COM
= output, V
NC
or V
NO
= input to off switch.
Between any two switches.
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
5
模拟电子
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
