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MAX4508
Technical data
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MAXIM MAX4508, MAX4509 Technical data

General Description
The MAX4508/MAX4509 are 8-to-1 and dual 4-to-1 fault­protected multiplexers that are pin compatible with the industry-standard DG508/DG509. The MAX4508/ MAX4509 operate with dual supplies of ±4.5V to ±20V or a single supply of +9V to +36V. These multiplexers fea­ture fault-protected inputs, rail-to-rail signal handling capability, and overvoltage clamping at 150mV beyond the rails.
Both parts offer ±40V overvoltage protection with sup­plies off and ±25V protection with supplies on. On­resistance is 400Ω max and is matched between channels to 15Ω max. All digital inputs have TTL logic thresholds, ensuring both TTL and CMOS logic com­patibility when using a single +12V supply or dual ±15V supplies.
Applications
Data-Acquisition Systems
Industrial and Process Control
Avionics
Signal Routing
Redundant/Backup Systems
Features
♦ ±40V Fault Protection with Power Off
±25V Fault Protection with ±15V Supplies
♦ Rail-to-Rail Signal Handling ♦ No Power-Supply Sequencing Required ♦ All Channels Off with Power Off ♦ Output Clamped to Appropriate Supply Voltage
During Fault Condition
♦ 1kΩ Output Clamp Resistance During
Overvoltage
♦ 400ΩΩmax On-Resistance ♦ 20ns Fault-Response Time ♦ ±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
♦ TTL/CMOS-Compatible Logic Inputs
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/
Dual 4-to-1 Multiplexers with Output Clamps
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A1
A2
GND
V+
NO1
V-
EN
A0
TOP VIEW
MAX4508
NO5
NO6
NO7
NO8
COM
NO4
NO3
NO2
SO/DIP
LOGIC
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
A1
GND
V+
NO1B
NO1A
V-
EN
A0
MAX4509
NO2B
NO3B
NO4B
COMB
COMA
NO4A
NO3A
NO2A
SO/DIP
LOGIC
Pin Configurations/Functional Diagrams
19-1414; Rev 5; 10/07
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability.
+Denotes a lead-free package.
Functional Diagrams/Truth Tables appear at end of data sheet.
Ordering Information
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN­PACKAGE
PKG
CODE
MAX4508CSE+
S16-8
MAX4508CPE+
P16-4
MAX4508C/D
Dice* —
MAX4508ESE+
S16-8
MAX4508EPE+
P16-4
MAX4508MJE
16 CERDIP** J16-3
0°C to +70°C 16 Narrow SO
0°C to +70°C 16 Plastic DIP
0°C to +70°C
-40°C to +85°C 16 Narrow SO
-40°C to +85°C 16 Plastic DIP
-40°C to +85°C
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/ Dual 4-to-1 Multiplexers with Output Clamps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = +15V, V- = -15V, V
A_
H
=+2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
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.
(Voltages Referenced to GND)
V+ ........................................................................-0.3V to +44.0V
V- .........................................................................-44.0V to +0.3V
V+ to V-................................................................-0.3V to +44.0V
COM_, A_ (Note 1) .............................. (V+ + 0.3V) to (V- - 0.3V)
NO_.........................................................(V+ - 40V) to (V- + 40V)
NO_ to COM_ ..........................................................-36V to +36V
NO_ Overvoltage with Switch Power On. ................-30V to +30V
NO_ Overvoltage with Switch Power Off. ................-40V to +40V
Continuous Current into Any Terminal..............................±30mA
Peak Current, into Any Terminal
(pulsed at 1ms, 10% duty cycle).................................±100mA
Continuous Power Dissipation (T
A
= +70°C)
16 Narrow SO (derate 8.70mW/°C above +70°C) ........696mW
16-Pin PDIP (derate 10.53mW/°C above +70°C)..........842mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW
Operating Temperature Ranges
MAX4508C_ E/MAX4509C_E...............................0°C to +70°C
MAX4508E_ E/MAX4509E_E ............................-40°C to +85°C
MAX4508MJE/MAX4509MJE..........................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: COM_, EN, and A_ pins are not fault protected. Signals on COM_, EN, or A_ exceeding V+ or V- are clamped by internal
diodes. Limit forward diode current to maximum current rating.
-150 +150
-15 +75
-1 +1
COM_ On-Leakage Current (Note 6)
-300 +300
-100 +75
nA
-2 +2
I
COM_(ON)
-100 +100
COM_ Off-Leakage Current (Note 6)
-100 +75
-1 +1
-200 +200
-20 +75
nA
-2 +2
I
COM_(OFF)
300 400
R
ON
V
V- V+
V
NO_
Fault-Free Analog Signal Range (Notes 3, 4)
-50 +50
I
NO_(OFF)
NO_ Off-Leakage Current (Note 6)
-5 +5
nA
-0.5 +0.5
25
500
Ω
700
On-Resistance
Ω
15
ΔR
ON
On-Resistance Match Between Channels (Note 5)
20
UNITSMIN TYP MAXSYMBOLPARAMETER
V+ = +15V, V- = -15V, V
NO_
= ±15V
V
COM_
= ±10V,
V
NO_
= ±10V or
floating
V
NO_
= ±10V, V
COM_
= –+10V
V
COM_
= ±10V, I
NO_
= 0.2mA
V
COM_
= ±10V, I
NO_
= 0.2mA
V
COM_
= ±10V,
V
NO_
= –+10V
CONDITIONS
M
C, E
+25°C
+25°C
M
C, E, M
C, E
+25°C
M
C, E
M
C, E
+25°C
M
+25°C
M
C, E
M
+25°C
C, E
C, E
+25°C
T
A
MAX4508
MAX4509
MAX4508
MAX4509
ANALOG SWITCH
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/
Dual 4-to-1 Multiplexers with Output Clamps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, V
A_
H
= +2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
V
NO_
= ±25VR
COM_
ns
600
ns
Enable Turn-On Time
120 200
M
Transition Time
+25°C
500
170 350
t
TRANS
Figure 2
C, E, M
+25°C
V
NO_
= ±10V, RL = 1kΩ,
Figures 2 and 3
nst
OFF
Enable Turn-Off Time 250C, E
10 80C, E, M
V
NO_
= ±10V, RL = 1kΩ,
Figure 4
ns
400M
t
BBM
Break-Before-Make Time Delay (Note 4)
UNITSMIN TYP MAXSYMBOLPARAMETER CONDITIONS TA
400
160 275
t
ON
µA-1 +1I
A_H
, I
A_L
A_ Input Current Logic High or Low
V0.8V
A_L
A_ Input Logic Threshold Low
V2.4V
A_H
A_ Input Logic Threshold High
µs2.5± Fault Recovery Time (Note 4)
ns20
± Fault Output Clamp Turn-On Delay (Note 4)
COM_ On Clamp Output Resistance, Supplies On
kΩ100 1.0 2.5
COM_ On Clamp Output Current, Supplies On
-13 -11 -7
mA
71013
I
COM_
nA-20 +20
-40 +40
V
-25 +25
V
NO_
Fault-Protected Analog Signal Range (Notes 3, 4)
µA
-100 +100
nA
-5 +5
-20 +20
I
NO_
NO_ Input Leakage Current, Supplies Off
µA-50 +50
I
NO_
NO_ Input Leakage Current, Supplies On
-1 +1
-100 +100
I
COM_
COM_ Output Leakage Current, Supplies On
nA
-20 +20
-200 +200
V
NO_
= ±10V, RL= 1kΩ,
Figures 2 and 3
VA_= 0.8V or 2.4V
Applies with power on, Figure 9
RL= 10kΩ, V
NO_
= ±25V
RL = 10kΩ, V
NO_
= ±25V
V
NO_
= ±40V, V
COM
= 0,
V+ = 0, V- = 0
V
NO_
= ±25V, V
COM_
= –+10V,
VEN= 0
V
NO_
= ±25V, VEN= 0
V
COM
= 0
C, E
+25°C
+25°C
C, E, M
C, E, M
C, E, M
+25°C
+25°C
+25°C
M
C, E
+25°C
+25°C
M
C, E
M
+25°C
C, E
+25°C
210+25°C
CL= 1.0nF, V
NO_
= 0, RS= 0,
Figure 5
pCQCharge Injection (Note 4)
-70+25°C
RL= 75Ω, CL= 15pF, V
NO_
= 1V
RMS
, f = 1MHz, Figure 6
dBV
ISO
Off-Isolation (Note 7)
SWITCH DYNAMIC CHARACTERISTICS
LOGIC INPUT
FAULT PROTECTION
Applies with power off
V
NO_
= +25V
V
NO_
= -25V
µA
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/ Dual 4-to-1 Multiplexers with Output Clamps
4 _______________________________________________________________________________________
UNITSMIN TYP MAXSYMBOLPARAMETER CONDITIONS T
A
500
µA
200 300
I
GND
GND Supply Current
µA
370 500
I+V+ Supply Current
±4.5 ±20
pF10
dB-62V
CT
Channel-to-Channel Crosstalk (Note 8)
19
pF
14
C
N_(OFF)
NO_ Off-Capacitance
RL= 75Ω, CL= 15pF, V
NO_
= 1V
RMS
, f = 1MHz, Figure 7
All V
A_
= 0 or 5V, V
NO_
= 0,
VEN= 5V
All V
A_
= 0 or 5V, V
NO_
= 0,
VEN= 5V
f = 1MHz, Figure 8
+25°C
C, E, M
+25°C
+25°C
+25°C
+25°C
C
COM_(OFF)
COM_ Off-Capacitance
f = 1MHz, Figure 8C
COM_(ON)
COM_ On-Capacitance
28
pF
22
+25°C
Power-Supply Range V+, V- C, E, M V
750C, E
850M
400C, E
500M
µA
200 300
I-V- Supply Current
All VA_= 0 or 5V, V
NO_
= 0,
VEN= 5V
+25°C
V
0V+
V
NO_
Fault-Free Analog Signal Range (Note 3)
-200 +200
I
NO_(OFF)
NO_ Off-Leakage Current (Notes 6, 9)
-10 +10
nA
-
0.5 0.01 +0.5
75
Ω
10 35
ΔR
ON
On-Resistance Match Between Channels (Note 5)
50
UNITSMIN TYP MAXSYMBOLPARAMETER
V+ = 12V, V- = 0, V
NO_
= 12V
V
COM_
= 10V, 1V;
V
NO_
= 1V, 10V
V
COM_
= 10V, I
NO_
= 200µA
CONDITIONS
C, E, M
M
C, E
+25°C
M
+25°C
C, E
T
A
650 950
R
ON
1100
Ω
1300
On-Resistance V
COM_
= +10V, I
NO_
= 200µA
+25°C
C, E
M
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, V
A_
H
= +2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
ELECTRICAL CHARACTERISTICS—Single +12V Supply
(V+ = +12V, V- = 0, V
A_
H
= +2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
ANALOG SWITCH
POWER SUPPLY
f = 1MHz, Figure 8
MAX4508
MAX4509
MAX4508
MAX4509
µA
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/
Dual 4-to-1 Multiplexers with Output Clamps
_______________________________________________________________________________________ 5
MAX4508
MAX4508
V
NO_
= 25V, V
+ = 12V
MAX4509
R
COM_
MAX4509
-150 +150
-15 +75
-1 +1
COM_ On-Leakage Current (Note 6)
-300 +300
-100 +75
nA
-2 +2
I
COM_(ON)
-100 +100
COM_ Off-Leakage Current (Note 6)
-10 +75
-1 +1
-200 +200
-20 +75
nA
-2 +2
I
COM_(OFF)
UNITSMIN TYP MAXSYMBOLPARAMETER
V
COM_
= 10V, 1V;
V
NO_
= 10V, 1V, or
floating
V
COM_
= 10V, 1V;
V
NO_
= 1V, 10V
CONDITIONS
M
C, E
+25°C
M
C, E
+25°C
M
C, E
+25°C
M
C, E
+25°C
T
A
µA-1 0.03 +1
I
INH_
,
I
INL_
A_ Input Current Logic High or Low
V0.8 1.8V
IN_L
A_ Input Logic Threshold Low
V1.8 2.4V
IN_H
A_ Input Logic Threshold High
COM_ ON Output Resistance, Supply On
kΩ2.4 6
COM_ ON Output Current, Supply On
mA235I
COM_
-20 +20
V
-25 +25
V
NO_
Fault-Protected Analog Signal Range (Notes 3, 10)
-100 +100
nA
-5 +5
-20 0.1 +20
I
NO_
NO_ Input Leakage Current, Supply Off (Notes 3, 10)
µA
-100 +100
I
NO_
NO_ Input Leakage Current, Supply On (Notes 3, 10)
-1 +1 µA
-100 +100
I
COM_
COM_ Output Leakage Current, Supply On (Notes 3, 10)
-20 +20
-5 +5
V
IN_
= 0.8V or 2.4V
Applies with all power on
V
NO_
= ±40V, V+ = 0, V- = 0
V
NO_
= ±25V, V
COM_
= 0,
V+ = 12V
V
NO_
= ±25V, V+ = 12V
V
NO_
= 25V, V+ = 12V
+25°C
C, E, M
C, E, M
C, E, M
+25°C
M
C, E
+25°C
+25°C
M
C, E
M
+25°C
C, E
+25°C
nA
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, V
A_
H
= +2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
FAULT PROTECTION
LOGIC INPUT
Applies with all power off -40 +40
nA
µA
MAX4508/MAX4509
Fault-Protected, High-Voltage Single 8-to-1/ Dual 4-to-1 Multiplexers with Output Clamps
6 _______________________________________________________________________________________
COM_ On-Capacitance C
COM_(ON)
V
COM_
= V
NO_
= 0, f = 1MHz,
Figure 8
+25°C 28
COM_ Off-Capacitance C
COM_(OFF)
pFV
COM_
= 0, f = 1MHz, Figure 8 +25°C 19
NO_ Off-Capacitance C
NO_(OFF)
pFV
NO_
= 0, f = 1MHz, Figure 8 +25°C 10
+25°C
+25°C
All V
A_
= 0 or 5V,
V
NO_
= 0, VEN= 5V
RL= 75Ω, CL= 15pF, V
NO_
= 1V
RMS,
f = 1MHz, Figure 7
Channel-to-Channel Crosstalk (Note 8)
V
CT
-62 dB
936
V+ Supply Current I+
200 300
µA
C, E, M
VC, E, MV+Power-Supply Range
675
+25°C
C, E, M
V
COM_
= 10V, RL = 2kΩ,
Figure 3
t
ON
220 500
700
T
A
CONDITIONSPARAMETER SYMBOL MIN TYP MAX UNITS
Off-Isolation (Note 7)
V
ISO
dB
Break-Before-Make Time Delay (Note 4)
RL= 75Ω, CL= 15pF, V
NO_
= 1V
RMS,
f = 1MHz, Figure 6
t
BBM
+25°C -70
ns
V
COM_
= 10V, RL = 2kΩ,
Figure 4
Charge Injection (Note 4)
+25°C 50 100
C, E, M
Q
350
Enable Turn-Off Time t
OFF
ns
V
COM_
= 10V, RL = 2kΩ,
Figure 3
+25°C 100 250
Enable Turn-On Time ns
pC
CL= 1.0nF, V
NO_
= 0, RS= 0,
Figure 5
+25°C 210
pF
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, V
A_
H
= +2.4V, V
A_
L
= +0.8V, VEN= +2.4V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: NO_ pins are fault protected and COM_ pins are not fault protected. The max input voltage on NO_ pins depends on the
COM_ load configuration. Generally, the max input voltage is ±36V with ±15V supplies and a load referred to ground. For more detailed information see the NO_ Input Voltage section.
Note 4: Guaranteed by design. Note 5: ΔR
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 6: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at T
A
= +25°C.
Note 7: Off-Isolation = 20log10 (V
COM_
/ V
NO_
), where V
COM_
= output and V
NO_
= input to off switch.
Note 8: Between any two analog inputs. Note 9: Leakage testing for single-supply operation is guaranteed by testing with dual supplies. Note 10: Guaranteed by testing with dual supplies.
+25°C
All V
A_
= 0 or V+,
V
NO_
= 0, VEN= 0 or V+
100 250
C, E, M 375
SWITCH DYNAMIC CHARACTERISTICS
POWER SUPPLY
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