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MAX378CWG-T

更新时间： 2024-11-21 13:10:31
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美信 - MAXIM 复用器
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MAX378CWG-T 数据手册

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19-1902; Rev 1; 8/94  
Hig h -Vo lt a g e , Fa u lt -P ro t e c t e d  
An a lo g Mu lt ip le x e rs  
8/MAX379  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
♦ Fault Input Voltage ±75V with Power Supplies Off  
♦ Fault Input Voltage ±60V with ±15V Power Supplies  
♦ All Switches Off with Power Supplies Off  
The MAX378 8-channel single-ended (1-of-8) multiplexer  
and the MAX379 4-channel differential (2-of-8) multiplexer  
use a series N-channel/P-channel/N-channel structure to  
provide significant fault protection. If the power supplies to  
the MAX378/MAX379 are inadvertently turned off while  
input voltages are still applied, all channels in the muxes  
are turned off, and only a few nanoamperes of leakage cur-  
rent will flow into the inputs. This protects not only the  
MAX378/MAX379 and the circuitry they drive, but also the  
sensors or signal sources that drive the muxes.  
♦ On Channel Turns OFF if Overvoltage Occurs on  
Input or Output  
♦ Only Nanoamperes of Input Current Under All  
Fault Conditions  
♦ No Increase in Supply Currents Due to Fault  
Conditions  
♦ Latchup-Proof Construction  
The series N-channel/P-channel/N-channel protection  
structure has two significant advantages over the simple  
current-limiting protection scheme of the industry’s first-  
generation fault-protected muxes. First, the Maxim protec-  
tion scheme limits fault currents to nanoamp leakage  
values rather than many milliamperes. This prevents dam-  
age to sensors or other sensitive signal sources. Second,  
the MAX378/MAX379 fault-protected muxes can withstand  
a continuous ±60V input, unlike the first generation, which  
had a continuous ±35V input limitation imposed by power  
dissipation considerations.  
♦ Operates from ±4.5V to ±18V Supplies  
♦ All Digital Inputs are TTL and CMOS Compatible  
♦ Low-Power Monolithic CMOS Design  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
16 Plastic DIP  
24 Wide SO  
16 CERDIP  
Dice**  
MAX378CPE  
MAX378CWG  
MAX378CJE  
MAX378C/D  
MAX378EPE  
MAX378EWG  
MAX378EJE  
MAX378MJE  
MAX378MLP  
0°C to +70°C  
All digital inputs have logic thresholds of 0.8V and 2.4V,  
ensuring both TTL and CMOS compatibility without requir-  
ing pull-up resistors. Break-before-make operation is  
guaranteed. Power dissipation is less than 2mW.  
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  
-55°C to +125°C  
-55°C to +125°C  
16 Plastic DIP  
24 Wide SO  
16 CERDIP  
16 CERDIP  
20 LCC*  
________________________Ap p lic a t io n s  
Data Acquisition Systems  
Industrial and Process Control Systems  
Avionics Test Equipment  
Ordering Information continued at end of data sheet.  
* Contact factory for availability.  
**The substrate may be allowed to float or be tied to V+ (JI CMOS).  
Signal Routing Between Systems  
__________________________________________________________P in Co n fig u ra t io n s  
TOP VIEW  
A0  
EN  
V-  
1
2
3
4
5
6
7
8
A0  
EN  
1
2
3
4
5
6
7
8
A1  
A1  
16  
16  
15 A2  
15 GND  
14 V+  
V-  
14 GND  
13 V+  
IN1  
IN1A  
MAX378  
MAX379  
13 IN1B  
IN2  
IN3  
IN2A  
IN3A  
IN4A  
OUTA  
12  
11  
10  
9
12  
11  
10  
9
IN5  
IN6  
IN7  
IN8  
IN2B  
IN3B  
IN4B  
OUTB  
IN4  
OUT  
DIP  
DIP  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
1234567...12

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MAX378EJE MAXIM

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 		High-Voltage, Fault-Protected Analog Multiplexers
MAX378EPE MAXIM

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MAX378EWE MAXIM

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MAX378EWG MAXIM

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 		High-Voltage, Fault-Protected Analog Multiplexers
MAX378-MAX379 MAXIM

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 		High-Voltage, Fault-Protected Analog Multiplexers
MAX378MJE MAXIM

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 		High-Voltage, Fault-Protected Analog Multiplexers
MAX378MJE/883B MAXIM

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 		Single-Ended Multiplexer, 1 Func, 8 Channel, CMOS, CDIP16, 0.300 INCH, CERAMIC, DIP-16
MAX378MJE/HR MAXIM

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 		8-Channel Analog Multiplexer
MAX378MLP MAXIM

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 		High-Voltage, Fault-Protected Analog Multiplexers
MAX378MLP/883B MAXIM

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 		Single-Ended Multiplexer, 1 Func, 8 Channel, CMOS, 0.350 X 0.350 INCH, LCC-20

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