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MAX328_V01

更新时间： 2024-11-27 02:52:47
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10页 175K
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Ultra-Low Leakage Monolithic CMOS Analog Multiplexers

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19-1006; Rev 3; 2/11  
Ultra-Low Leakage Monolithic CMOS  
Analog Multiplexers  
8/MAX329  
General Description  
The MAX328/MA329 are monolithic CMOS analog multi-  
plexers. The MAX328 is a single-ended, 1-of-8 device,  
and the MAX329 is a differential, 2-of-8 device.  
Features  
o Ultra-Low Off- and On-Leakage: 1pA Typ  
o Bidirectional Operation (Use as Mux or Demux)  
o TTL and CMOS Logic Compatibility  
Designed to provide the lowest possible on- and off-  
leakages, these multiplexers switch signals from high  
source impedance, providing the mux operates into a  
high-input-impedance op amp or A/D converter. The  
MAX328/MAX329 are pin-for-pin replacements for the  
popular DG508/DG509 in these applications.  
o Analog-Signal Range Includes Power-Supply Rails  
o Switching Speeds Less Than 1.5µs  
o Pin Compatible with DG508/DG509 and  
MAX358/MAX359  
o Latchup Proof Construction  
Adding an external 40kΩ resistor to each input makes  
the MAX328/MAX329 an excellent fault-tolerant multi-  
plexer. Low leakage (less than 1pA at +25°C) and  
2.5kΩ on-resistance allow the circuit to sustain 110V  
AC faults indefinitely while maintaining an error of less  
than 40nV for normal signals (i.e., 1pA times 40kΩ).  
The MAX328/MAX329 work equally well with a single  
supply of 10V to 30V or dual supplies of 5V to 18V.  
They also perform well with unbalanced combinations of  
supply voltage, such as +12V and -5V or +5V and -15V.  
Low power dissipation (1.9mW with 15V supplies)  
allows use in portable applications.  
Ordering Information  
PART  
TEMP RANGE  
0°C to +70°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  
-40°C to +85°C  
-55°C to +125°C  
PIN-PACKAGE  
16 Plastic DIP  
16 Wide SO  
16 CERDIP  
MAX328CPE+  
MAX328CWE+  
MAX328CJE  
MAX328C/D  
MAX328ETE+  
MAX328EPE+  
MAX328EWE+  
MAX328EJE  
MAX328MJE  
Dice*  
16 TQFN-EP**  
16 Plastic DIP  
16 Wide SO  
16 CERDIP***  
16 CERDIP***  
Applications  
Control Systems  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*Contact factory for dice specifications.  
Data Logging Systems  
Aircraft Heads-Up Displays  
Data-Acquisition Systems  
Signal Routing  
**EP = Exposed pad.  
***Contact factory for availability. Substrate may be allowed to  
be unconnected or be connected to V+.  
Ordering Information continued at end of data sheet.  
Typical Operating Circuit  
Pin Configurations  
1-OF-8 CHANNEL SEQUENTIAL MUX WITH 120V AC FAULT CAPABILITY  
+15V  
V+  
-15V  
V-  
TOP VIEW  
GND  
40kΩ  
1/2W  
ANALOG  
INPUT  
+
OP  
AMP  
+
S1  
OUT  
A0  
A0  
1
2
3
4
5
6
7
8
16 A1  
15 A2  
14 GND  
13 V+  
12 S5  
11 S6  
10 S7  
1
2
3
4
5
6
7
8
16 A1  
MAX328  
D
40kΩ  
1/2W  
EN  
V-  
S1  
S2  
S3  
S4  
D
EN  
V-  
15 GND  
14 V+  
ANALOG  
INPUT  
i BIAS < 1pA  
S8  
A0 A1 A2 EN  
+15V  
V+  
MAX328  
S1A  
S2A  
S3A  
S4A  
DA  
MAX329  
13 S1B  
12 S2B  
11 S3B  
10 S4B  
Q
B
CLK IN  
N.C.  
BIN  
AIN  
Q
Q
C
O
DM7493  
9
S8  
9
DB  
Q
N.C.  
A
V
V
02  
GND  
01  
DIP/SO  
DIP/SO  
+15V  
EN IN  
(MUX ON/OFF CONTROL)  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
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