19-1404; Rev 1; 4/99
Serially Controlled, Clickless
Audio/Video Switches
General Description
The MAX4571–MAX4574 serial-interface controlled
switches are ideal for multimedia applications. Each
device features 35Ω max on-resistance, -90dB audio
off-isolation at 20kHz, -60dB video off-isolation at
1.0MHz, and “clickless” mode operation for audio
applications.
The MAX4571/MAX4573 contain eleven SPST switches,
while the MAX4572/MAX4574 contain two SPST switch-
es and six SPDT switches. The MAX4571/MAX4572 fea-
ture a 2-wire, I
2
C™-compatible serial interface. The
MAX4573/MAX4574 feature a 3-wire, SPI™/QSPI™/
MICROWIRE™-compatible serial interface. All four
parts are available in 28-pin QSOP, SSOP, and wide
SO packages and operate over the commercial and
extended temperature ranges.
Features
o
Selectable Soft Switching Mode for “Clickless”
Audio Operation
o
35Ω max On-Resistance
o
-90dB Audio Off-Isolation at 20kHz
-50dB Video Off-Isolation at 10MHz
o
-90dB Audio Crosstalk at 20kHz
-52dB Video Crosstalk at 10MHz
o
Serial Interface
2-Wire, Fast-Mode, I
2
C-Compatible (MAX4571/72)
3-Wire, SPI/QSPI/MICROWIRE-Compatible
(MAX4573/74)
o
Single-Supply Operation from +2.7V to +5.25V
MAX4571–MAX4574
Applications
Set-Top Boxes
PC Multimedia Boards
Audio Systems
Video Conferencing Systems
PART
MAX4571CEI
MAX4571CAI
MAX4571CWI
MAX4571EEI
MAX4571EAI
MAX4571EWI
MAX4572CEI
MAX4572CAI
MAX4572CWI
MAX4572EEI
MAX4572EAI
MAX4572EWI
MAX4573CEI
MAX4573CAI
MAX4573CWI
MAX4573EEI
MAX4573EAI
MAX4573EWI
MAX4574CEI
MAX4574CAI
MAX4574CWI
MAX4574EEI
MAX4574EAI
MAX4574EWI
Ordering Information
TEMP. RANGE
0°C to +70°C
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
0°C to +70°C
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
0°C to +70°C
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
0°C to +70°C
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
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
28 QSOP
28 SSOP
28 Wide SO
Pin Configurations
TOP VIEW
MAX4571/MAX4573
NO1 1
COM1 2
NO2 3
COM2 4
NO3 5
COM3 6
NO4 7
COM4 8
NO5 9
COM5 10
NO6 11
COM6 12
NO7 13
COM7 14
( ) ARE FOR MAX4573
28 V+
27 SDA (DOUT)
26 SCL (DIN)
25 A1 (SCLK)
24 A0 (CS)
23 GND
22 NO8
21 COM8
20 NO9
19 COM9
18 NO10
17 COM10
16 NO11
15 COM11
QSOP/SSOP/SO
I
2
C is a trademark of Philips Corp.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
1
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
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.
Serially Controlled, Clickless
Audio/Video Switches
MAX4571–MAX4574
ABSOLUTE MAXIMUM RATINGS
V+ to GND ................................................................-0.3V to +6V
NO_ _, COM_, DOUT to GND (Note 1) ........-0.3V to (V+ + 0.3V)
SCL, SDA,
CS,
SCLK, DIN, A0, A1 to GND..............-0.3V to +6V
Continuous Current into Any Terminal..............................±10mA
Peak Current (pulsed at 1ms, 10% duty cycle)................±50mA
Continuous Power Dissipation (T
A
= +70°C)
QSOP (derate 10.8mW/°C above +70°C) ...................860mW
SSOP (derate 9.5mW/°C above +70°C) .....................762mW
Wide SO (derate 12.5mW/°C above +70°C).............1000mW
Operating Temperature Ranges
MAX457_C_ _ ....................................................0°C to +70°C
MAX457_E_ _..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
Signals on NO_ _ or COM_ 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—Single +5V Supply
(V+ = +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
ANALOG SWITCHES
Analog Signal Range (Note 3)
V
NO
_ _,
V
COM
_
R
ON
I
COM
_ = 4mA,
V
NO
_ _ = 3V,
V+ = 4.75V
I
COM
_ = 4mA,
V
NO
_ _ = 3V,
V+ = 4.75V
I
COM
_ = 4mA;
V+ = 4.75V;
V
NO
_ _ = 1V, 2V, 3V
V
NO
_ _ = 4.5V, 1V;
V
COM
_ = 1V, 4.5V;
V+ = 5.25V
V
NO
_ _ = 4.5V, 1V;
V
COM
_ = 1V, 4.5V;
V+ = 5.25V
V
COM
_ = 4.5V, 1V;
V
NO
_ _ = 4.5V, 1V, or
floating; V+ = 5.25V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-0.2
-10
-0.2
-10
-0.2
-10
0.01
0.01
0.01
2
0.8
0
25
V+
35
45
3
3
6
6
0.2
nA
10
0.2
nA
10
0.2
nA
10
Ω
Ω
V
Ω
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
On-Resistance Match
Between Channels (Note 4)
On-Resistance
Flatness (Note 5)
NO_ _ Off-Leakage
Current (Note 6)
COM_ Off-Leakage
Current (Note 6)
COM _ On-Leakage
Current (Note 6)
AUDIO PERFORMANCE
Total Harmonic Distortion
plus Noise
Off-Isolation (Note 7)
Channel-to-Channel Crosstalk
∆R
ON
R
FLAT
I
NO
_ _
(OFF)
I
COM
_
(OFF)
I
COM
_
(ON)
THD+N
V
ISO(A)
V
CT(A)
f
IN
= 1kHz, R
L
= 600Ω, V
NO
_ _ = 1V
RMS
,
V
NO_ _
= 2.5V
V
NO
_ _ = 1V
RMS
, f
IN
= 20kHz,
R
L
= 600Ω, Figure 1
V
NO
_ _ = 1V
RMS
, f
IN
= 20kHz,
R
S
= 600Ω, Figure 1
0.07
-90
-90
%
dB
dB
2
_______________________________________________________________________________________
Serially Controlled, Clickless
Audio/Video Switches
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = 5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
VIDEO PERFORMANCE
Off-Isolation (Note 7)
Channel-to-Channel Crosstalk
-3dB Bandwidth
Off-Capacitance
V
ISO(V)
V
CT(V)
BW
C
OFF(NO)
V
NO
_ _ = 1V
RMS
, f
IN
= 1.0MHz,
R
L
= 50Ω, Figure 1
V
NO
_ _ = 1V
RMS
, f
IN
= 1.0MHz,
R
S
= 50Ω, Figure 1
R
SOURCE
= 50Ω, R
L
= 50Ω
f
IN
= 1MHz
V
NO
_ _ = 1.5V,
R
L
= 5kΩ,
C
L
= 35pF
V
NO
_ _ = 1.5V,
R
L
= 300Ω,
C
L
= 35pF
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
10
125
75
-50
-52
>150
9
dB
dB
MHz
pF
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX4571–MAX4574
DYNAMIC TIMING WITH CLICKLESS MODE DISABLED
(Notes 8 and 12, Figure 2)
200
500
ns
700
300
ns
400
ns
Turn-On Time
t
ONSD
Turn-Off Time
t
OFFSD
Break-Before-Make Time
t
BBM
MAX4572/MAX4574, V
NO
_ _ = 1.5V,
T
A
= T
MIN
to T
MAX
V
NO
_ _ = 1.5V, R
L
= 5kΩ, C
L
= 35pF,
T
A
= +25°C
V
NO
_ _ or = 1.5V, R
L
= 300Ω, C
L
= 35pF,
T
A
= +25°C
T
A
= T
MIN
to T
MAX
All logic inputs = 0 or V+,
T
A
= T
MIN
to T
MAX
DYNAMIC TIMING WITH CLICKLESS MODE ENABLED
(Note 8, Figure 2)
Turn-On Time
Turn-Off Time
POWER SUPPLY
Supply Voltage Range
Supply Current (Note 9)
V+
I+
+2.7
6
+5.25
10
V
µA
t
ONSE
t
OFFSE
8
3
ms
ms
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = 3V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
ANALOG SWITCHES
Analog Signal Range (Note 3)
V
NO
_ _,
V
COM
_
R
ON
I
COM
_ = 4mA,
V
NO
_ _ =2V,
V+ = 2.7V
I
COM
_ = 4mA,
V
NO
_ _ = 2V,
V+ = 2.7V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
1
0
43
V+
90
110
5
5
Ω
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
Ω
On-Resistance Match
Between Channels (Note 4)
∆R
ON
_______________________________________________________________________________________
3
Serially Controlled, Clickless
Audio/Video Switches
MAX4571–MAX4574
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V+ = +3V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
On-Resistance
Flatness (Note 5)
SYMBOL
R
FLAT
CONDITIONS
I
COM_
= 4mA;
V
+
= 2.7V;
V
NO_ _
= 1V, 5V, 2V
V
NO_ _
= 3V, 0.5V;
V
COM
_ = 0.5V, 3V;
V+ = 3.6V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-0.2
-10
-0.2
-10
-0.2
-10
0.01
0.01
0.01
MIN
TYP
4
MAX
10
10
0.2
nA
10
0.2
nA
10
0.2
nA
10
UNITS
Ω
NO_ _Off-Leakage
Current (Notes 6 and 10)
I
NO_ _ (OFF)
COM_ Off-Leakage
Current (Notes 6 and 10)
V
NO_ _
= 3V, 0.5V;
I
COM
_
(OFF)
V
COM
_ = 0.5V, 3V;
V+ = 3.6V
V
COM_
= 3V, 0.5V;
V
NO
_ _ = 3V, 0.5V,
or floating;
V+ = 3.6V
COM _ On-Leakage
Current (Notes 6 and 10)
AUDIO PERFORMANCE
Total Harmonic Distortion
plus Noise
Off-Isolation (Note 7)
Channel-to-Channel Crosstalk
VIDEO PERFORMANCE
Off-Isolation (Note 7)
Channel-to-Channel Crosstalk
-3dB Bandwidth
Off Capacitance
I
COM
_
(ON)
THD+N
V
ISO(A)
V
CT(A)
f
IN
= 1kHz, R
L
= 600Ω, V
NO
_ = 0.5V
RMS
,
V
NO_ _
= 1.5V
V
NO_ _
= 0.5V
RMS
, f
IN
= 20kHz, R
L
= 600Ω,
Figure 1
V
NO_ _
= 0.5V
RMS
, f
IN
= 20kHz, R
S
= 600Ω,
Figure 1
0.07
-90
-90
%
dB
dB
V
ISO(V)
V
CT(V)
BW
C
OFF(NO)
V
NO_ _
= 0.5V
RMS
, f
IN
= 10MHz, R
L
= 50Ω,
Figure 1
V
NO_ _
= 0.5V
RMS
, f
IN
= 10MHz, R
S
= 50Ω,
Figure 1
R
SOURCE
= 50Ω, R
L
= 50Ω, C
L
= 35pF
f
IN
= 1MHz
V
NO_ _
= 1.5V,
R
L
= 5kΩ, C
L
= 35pF
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-50
-52
>150
9
300
100
10
200
900
1000
300
400
dB
dB
MHz
pF
DYNAMIC TIMING WITH CLICKLESS MODE DISABLED
(Notes 8 and 12, Figure 2)
Turn-On Time
Turn-Off Time
Break-Before-Make Time
t
ONSD
t
OFFSD
t
BBM
ns
ns
ns
T
A
= +25°C
V
NO_ _
= 1.5V,
R
L
= 300Ω, C
L
= 35pF T
A
= T
MIN
to T
MAX
V
NO_ _
= 1.5V, T
A
= T
MIN
to T
MAX
V
NO_ _
= 1.5V, R
L
= 5kΩ, C
L
= 35pF,
T
A
= +25°C
V
NO_ _
= 1.5V, R
L
= 300Ω, C
L
= 35pF,
T
A
= +25°C
DYNAMIC TIMING WITH CLICKLESS MODE ENABLED
(Notes 8 and 12, Figure 2)
Turn-On Time
Turn-Off Time
t
ONSE
t
OFFSE
8
3
ms
ms
4
_______________________________________________________________________________________
Serially Controlled, Clickless
Audio/Video Switches
I/O INTERFACE CHARACTERISTICS
(V+ = +2.7V to +5.25V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
V+ = 5V
V+ = 3V
V+ = 5V
V+ = 3V
Digital inputs = 0 or V+
3
2
0.2
-1
0.01
5
I
SINK
= 6mA
I
SOURCE
= 0.5mA
V+
- 0.5
DC
1.3
0.6
0.6
0
100
1.3
0.6
(Note 11)
(Note 11)
20 +
0.1C
b
20 +
0.1C
b
DC
100
0
C
LOAD
= 50pF
20
100
0
200
200
200
2
2
200
300
300
0.9
400
0.4
1
CONDITIONS
MIN
TYP
MAX
0.8
0.6
UNITS
DIGITAL INPUTS (SCLK, DIN,
CS,
SCL, SDA, A0, A1)
Input Low Voltage
Input High Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUTS (DOUT, SDA)
Output Low Voltage
DOUT Output High Voltage
V
OL
V
OH
V
V
V
IL
V
IH
V
HYST
I
LEAK
C
IN
V
V
V
µA
pF
MAX4571–MAX4574
2-WIRE INTERFACE TIMING
(Figure 3)
SCL Clock Frequency
Bus Free Time between Stop
and Start Condition
START Condition Hold Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
Clock Low Period
Clock High Period
SCL/SDA Rise Time
SCL/SDA Fall Time
3-WIRE TIMING
(Figure 5)
Operating Frequency
DIN to SCLK Setup
DIN to SCLK Hold
SCLK Fall to Output Data Valid
CS
to SCLK Rise Setup
CS
to SCLK Rise Hold
CS
High Pulse Width
SCLK Pulse Width Low
SCLK Pulse Width High
Rise Time (SCLK, DIN,
CS)
Fall Time (SCLK, DIN,
CS)
f
OP
t
DS
t
DH
t
DO
t
CSS
t
CSH
t
CSW
t
CL
t
CH
t
R
t
F
2.1
MHz
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
f
SCL
t
BUF
t
HD:STA
t
SU:STO
t
HD:DAT
t
SU:DAT
t
LOW
t
HIGH
t
R
t
F
kHz
µs
µs
µs
µs
ns
µs
µs
ns
ns
_______________________________________________________________________________________
5
