19-0389; Rev. 2; 9/96
Fault-Protected Analog Multiplexers
_______________General Description
The MAX354/MAX355 fault-protected multiplexers
(muxes) use a series N-channel, P-channel, N-channel
structure that protects the devices from overvoltage up
to 40V beyond the supply rails during power-up, power-
down, and fault conditions. The MAX354/MAX355 also
protect sensitive circuit components against voltages
near or beyond the normal supplies.
The MAX354 single 8-channel mux and the MAX355
dual 4-channel mux protect analog signals while oper-
ating from a single 4.5V to 36V supply or ±4.5V to ±18V
dual supplies. These muxes have 350Ω on-resistance
and can be used for demultiplexing as well as multi-
plexing. Input leakage current is less than 0.5nA at
+25°C and less than 5nA at +85°C.
All digital inputs have 0.8V and 2.4V logic thresholds,
ensuring both TTL and CMOS logic compatibility with-
out pull-up resistors. Break-before-make operation is
guaranteed and power consumption is less than
1.5mW.
____________________________Features
o
350Ω Max On-Resistance
o
Improved 2nd Source for MAX358/MAX359 and
DG458/DG459
o
Pin Compatible with ADG508F/ADG509F
o
All Switches Off with Supplies Off
o
On Switch Turns Off with Overvoltage
o
Output Clamps at 1.5V Below Supply Rails
o
0.5nA Max Input Leakage at +25°C (5nA at +85°C)
o
No Power-Up Sequencing Required
o
TTL and CMOS-Logic Compatibility
MAX354/MAX355
______________Ordering Information
PART
MAX354CPE
MAX354CWE
MAX354C/D
MAX354EPE
MAX354EWE
MAX354MJE
MAX355CPE
MAX355CWE
MAX355C/D
MAX355EPE
MAX355EWE
MAX355MJE
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
-55°C to +125°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
-55°C to +125°C
PIN-PACKAGE
16 Plastic DIP
16 Wide SO
Dice*
16 Plastic DIP
16 Wide SO
16 CERDIP**
16 Plastic DIP
16 Wide SO
Dice*
16 Plastic DIP
16 Wide SO
16 CERDIP**
________________________Applications
Data-Acquisition Systems
Industrial and Process Control
Avionics
ATE Equipment
Signal Routing
Redundant/Backup Systems
* Dice are tested at T
A
= +25°C only.
** Contact factory for availability.
__________________________________________________________Pin Configurations
TOP VIEW
MAX354
A0 1
EN 2
V- 3
NO1 4
NO2 5
NO3 6
NO4 7
COM 8
LOGIC
16 A1
15 A2
14 GND
13 V+
12 NO5
11 NO6
10 NO7
9
NO8
A0 1
EN 2
V- 3
NO1A 4
NO2A 5
NO3A 6
NO4A 7
COMA 8
MAX355
16 A1
15 GND
LOGIC
14 V+
13 NO1B
12 NO2B
11 NO3B
10 NO4B
9
COMB
DIP/SO
DIP/SO
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Fault-Protected Analog Multiplexers
MAX354/MAX355
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND, unless otherwise noted.)
V+ ...........................................................................-0.3V to +44V
V- ............................................................................+0.3V to -44V
V+ to V-...................................................................-0.3V to +44V
Digital Inputs.........................................(V+ + 0.3V) to (V- - 0.3V)
Input Overvoltage with Mux Power On
V+ = +15V ....................................................................... +25V
V- = -15V ............................................................................-25V
Input Overvoltage with Mux Power Off
V+ = 0V.............................................................................+40V
V- = 0V ...............................................................................-40V
Continuous Current into Any Terminal .............................±30mA
Peak Current into Any Terminal ........................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW
Wide SO (derate 9.52mW/°C above +70°C)................ 762mW
CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
Operating Temperature Ranges
MAX35_C_ _ ........................................................0°C to +70°C
MAX35_E_ _......................................................-40°C to +85°C
MAX35_M_ _ ...................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) ............................ +300°C
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
(V+ = +15V, V- = -15V, GND = 0V, V
AH
= V
ENH
= 2.4V, V
AL
= V
ENL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SWITCH
Analog Signal Range
Fault-Free Analog
Signal Range
On-Resistance
(Note 2)
On-Resistance Matching
Between Channels
NO-Off Leakage Current
(Note 4)
V
COM
, V
NO
(Note 1)
V+ = +15V, V- = -15V (Note 1)
T
A
= +25°C
R
ON
I
NO
= 1.0mA, V
COM
= ±10V
I
NO
= 1.0mA, V
COM
= ±10V
(Note 3)
V
COM
= ±10V,
V
NO
= ±10V,
V
EN
= 0V
V
COM
= ±10V,
V
NO
= ±10V,
V
EN
= 0V
I
COM(OFF)
V
COM
= ±10V,
V
NO
= ±10V,
V
EN
= 0V
±
±
±
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
MAX354 T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX355 T
A
= T
MIN
to T
MAX
T
A
= +25°C
COM-On Leakage Current
(Note 4)
V
COM
= ±10V,
V
NO
= ±10V,
sequence each
switch on
MAX354 T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX355 T
A
= T
MIN
to T
MAX
C, E
M
C, E
M
C, E
M
C, E
M
C, E
M
-0.5
-5.0
-50
-0.5
-25
-100
-0.5
-15
-50
-0.5
-30
-200
-0.5
-15
-100
0.02
0.02
0.02
0.02
0.01
C, E
M
7
(V+ - 40)
-12
285
(V- + 40)
12
350
450
500
12
15
0.5
5.0
50
0.5
25
100
0.5
15
50
0.5
30
200
0.5
15
100
nA
nA
nA
Ω
Ω
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
∆R
ON
I
NO(OFF)
COM-Off Leakage Current
(Note 4)
I
COM(ON)
2
_______________________________________________________________________________________
Fault-Protected Analog Multiplexers
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, V- = -15V, GND = 0V, V
AH
= V
ENH
= 2.4V, V
AL
= V
ENL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
FAULT
Output Leakage Current
(with Overvoltage)
Input Leakage Current
(with Overvoltage)
Input Leakage Current
(with Power Supplies Off)
DIGITAL LOGIC INPUT
Logic High Input Voltage
Logic Low Input Voltage
Input Current with
Input Voltage High
Input Current with
Input Voltage Low
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
DYNAMIC
Transition Time
Enable Turn-On Time
Enable Turn-Off Time
Break-Before-Make Interval
Charge Injection
Off Isolation
t
TRANS
t
ON(EN)
t
OFF(EN)
t
OPEN
V
CTE
V
ISO
Figure1
Figure 2
Figure 2
Figure 3
C
L
= 10nF, V
S
= 0V, R
S
= 0Ω,
Figure 4
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
= +25°C
50
100
80
100
80
160
180
250
400
250
400
200
300
ns
ns
ns
ns
pC
dB
I+
I-
V
EN
= V
A
= 5V
V
EN
= V
A
= 0V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±4.5
-300
-500
-1
-100
±18
300
500
1
100
V
µA
µA
V
A_H
, V
ENH
V
A_L
, V
ENL
I
A_H
, I
ENH
I
A_L
, I
ENL
V
A
= V
EN
= 2.4V
V
A
= V
EN
= 0.8V
T
A
= T
MIN
to T
MAX
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
-1
-5
-1
-5
2.4
0.8
1
5
1
5
V
V
µA
µA
V
D
= 0V,
analog overvoltage = ±33V
V
IN
= ±25V, V
O
= ±10V
V
IN
= ±25V, V
EN
= V
O
= 0V,
V
A0
= V
A1
= V
A2
= 0V or 5V
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
-5
-2
-0.1
-2
-0.1
-2
0.001
0.001
0.01
5
2
0.1
2
0.1
2
nA
µA
µA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX354/MAX355
V
EN
= 0V, R
L
= 1kΩ, f = 100kHz,
T
A
= +25°C
Figure 5
V
EN
= 2.4V, f = 100kHz,
V
GEN
= 1V
p-p
, R
L
= 1kΩ,
Figure 6
f = 1MHz, Figure 7
f = 1MHz, V
EN
= V
D
= 0V
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
Crosstalk Between Channels
Logic Input Capacitance
NO-Off Capacitance
V
CT
C
IN
C
NO(OFF)
92
2.5
1.6
dB
pF
pF
pF
_______________________________________________________________________________________
3
Fault-Protected Analog Multiplexers
MAX354/MAX355
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, V- = -15V, GND = 0V, V
AH
= V
ENH
= 2.4V, V
AL
= V
ENL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
DYNAMIC (cont’d)
COM-Off Capacitance
COM-On Capacitance
Setting Time (Note 5)
C
COM(OFF)
C
COM(ON)
t
SETT
f = 1MHz, Figure 7, MAX354
T
A
= +25°C
V
EN
= V
D
= 0V
MAX355
f = 1MHz, Figure 7, MAX354
T
A
= +25°C
V
EN
= V
D
= 0V
MAX355
0.1%
0.01%
T
A
= +25°C
11
5
28
14
1
2.5
pF
pF
µs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
When the analog signal exceeds +13.5V or -13.5V, the blocking action of Maxim’s gate structure goes into operation. Only
leakage currents flow, and the channel on-resistance rises to infinity (see
Typical Operating Characteristics).
Note 2:
Electrical characteristics such as on-resistance will change when power supplies other than ±15V are used.
Note 3:
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
Note 4:
Leakage parameters are 100% tested at maximum rated hot operating temperature, and guaranteed by correlation at +25°C.
Note 5:
Guaranteed by design.
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. ANALOG VOLTAGE
MAX354/5-1a
ON-RESISTANCE vs. ANALOG VOLTAGE
MAX354/5-1b
ON-RESISTANCE vs.
V
COM
AND TEMPERATURE
V+ = +15V
V- = -15V
600
500
R
ON
(Ω)
A
400
300
200
100
-10
B
C
D
A:
B:
C:
D:
+125°C
+85°C
+70°C
+25°C
MAX354/5-2
100
10
1
R
ON
(MΩ)
V+ = +5V
V- = -5V
2000
1800
1600
1400
R
ON
(Ω)
1200
1000
800
V+ = +15V
V- = -15V
V+ = +10V
V- = -10V
V+ = +5V
V- = -5V
700
0.1
0.01
0.001
V+ = +15V
V- = -15V
600
400
200
0
-15
-10
-5
0
5
10
15
0.0001
ANALOG VOLTAGE (V)
-15
-10
-5
0
5
10
15
-5
0
V
COM
(V)
5
10
ANALOG VOLTAGE (V)
OFF LEAKAGE vs. TEMPERATURE
MAX354-3
ON LEAKAGE vs. TEMPERATURE
MAX354-4
CHARGE INJECTION vs. V
COM
150
100
Q
j
(pC)
50
0
-50
V+ = +15V
V- = -15V
MAX354-5
100
V+ = +15V
V- = -15V
V
NO_
= ±10V
V
COM_
= 10V
100
V+ = +15V
V- = -15V
V
COM_
= ±10V
200
OFF LEAKAGE (nA)
I
COM(OFF)
ON LEAKAGE (nA)
10
10
1
1
0.1
I
NO(OFF)
0.1
-100
-150
0.01
-75 -50
-25
0
25
50
75 100 125
TEMPERATURE (°C)
0.01
-75 -50
-25
0
25
50
75 100 125
TEMPERATURE (°C)
-200
-10
-5
0
V
COM
(V)
5
10
4
_______________________________________________________________________________________
Fault-Protected Analog Multiplexers
____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
MAX354/MAX355
SUPPLY CURRENT vs. TEMPERATURE
V+ = +15V
V- = -15V
V
EN
= +5V
MAX354-6
FAULT CURRENT vs. FAULT VOLTAGE
10m
1m
FAULT CURRENT (A)
100µ
10µ
1µ
100m
10n
1n
V+ = +15V
V- = -15V
V+ = V- = 0V
1000
I+ (V
A_
= 5V)
100
I+, I- (µA)
I+ (V
A_
= 0V)
10
1
I-
0.1
-75 -50
-25
0
25
50
75 100 125
TEMPERATURE (°C)
100p
10p
-70
-50
-30
-10
10
30
50
70
FAULT VOLTAGE (V)
______________________________________________________________Pin Description
PIN
NAME
MAX354
1, 15, 16
—
2
3
4–7
—
8
—
9–12
—
13
14
MAX355
—
1, 16
2
3
—
4–7
—
8, 9
—
10–13
14
15
A0, A2, A1
A0, A1
EN
V-
NO1–NO4
NO1A–NO4A
COM
COMA, COMB
NO8–NO5
NO4B–NO1B
V+
GND
Address Logic Inputs
Address Logic Inputs
Enable Logic Input. See truth tables.
Negative Supply Voltage Input. Connect to GND for single-supply operation.
Analog Inputs—bidirectional
Analog Inputs—bidirectional “A” switch
Analog Output—bidirectional
Analog Outputs—bidirectional
Analog Inputs—bidirectional
Analog Inputs—bidirectional “B” switch
Positive Supply Voltage Input
Ground
FUNCTION
Note:
Analog inputs and outputs are electrically identical and completely interchangeable.
_______________________________________________________________________________________
5
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
