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參數(shù)資料
| 型號： | MAX4509MJE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Fault-Protected, High-Voltage Single 8-to-1/Dual 4-to-1 Multiplexers |
| 中文描述： | DUAL 4-CHANNEL, SGL ENDED MULTIPLEXER, CDIP16 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-16 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 288K |
| 代理商： | MAX4509MJE |
M
Fault-Protec ted, High-Voltage
S ingle 8-to-1/Dual 4-to-1 Multiplexers
Detailed Desc ription
Traditional fault-protected multiplexers are constructed
with three series FET switches. This produces good off
protection, but limits the switches input voltage range
to as much as 3V below the supply rails, reducing its
usable dynamic range. As the voltage on one side of
the switch approaches within about 3V of either supply
rail (a fault condition), the switch impedance increases,
limiting the output signal range to approximately 3V
less than the appropriate polarity supply voltage.
The MAX4508/MAX4509 differ considerably from tradi-
tional fault-protected multiplexers, offering several
advantages. First, they are constructed with two paral-
lel FETs, allowing very low resistance when the switch
is on. Second, they allow signals on the NO_ pins that
are within or beyond the supply rails to be passed
through the switch to the COM terminal. This allows rail-
to-rail signal operation. Third, when a signal V
NO_
exceeds the supply rails (i.e., a fault condition), the
voltage on C OM_ is limited to the supply rails.
Operation is identical for both fault polarities.
Pin Desc riptions
Truth Tables
NAME
FUNCTION
1
2
3
4
5
A0
EN
V-
NO1
NO2
Address Bit 0
Mux Enable
Negative Supply Voltage
Channel Input 1
Channel Input 2
PIN
8
9
COM
NO8
Analog Output
Channel Input 8
7
NO4
Channel Input 4
6
NO3
Channel Input 3
12
13
14
15
16
NO5
V+
GND
A2
A1
Channel Input 5
Positive Supply Voltage
Ground
Address Bit 2
Address Bit 1
11
NO6
Channel Input 6
10
NO7
Channel Input 7
MAX4508 (Single 8-to-1 Mux)
MAX4509 (Dual 4-to-1 Mux)
NAME
FUNCTION
1
2
3
4
5
A0
EN
V-
Address Bit 0
Mux Enable
Negative Supply Voltage
Channel Input 1A
Channel Input 2A
PIN
NO1A
NO2A
8
9
COMA
COMB
Mux Output A
Mux Output B
7
NO4A
Channel Input 4A
6
NO3A
Channel Input 3A
13
14
15
16
NO1B
V+
GND
A1
Channel Input 1B
Positive Supply Voltage
Ground
Address Bit 1
12
NO2B
Channel Input 2B
11
NO3B
Channel Input 3B
10
NO4B
Channel Input 4B
x
0
0
0
0
x
0
0
1
1
None
NO1
NO2
NO3
NO4
1
1
1
1
NO7
NO8
1
0
NO6
1
0
NO5
x
0
1
0
1
0
1
1
0
0
1
1
1
1
1
1
1
1
A1
ON SWITCH
A2
A0
EN
MAX4508 (Single 8-to-1 Mux)
x
0
0
1
1
None
NO1A
NO2A
NO3A
NO4A
x
0
1
0
1
0
1
1
1
1
A1
COMA
A0
EN
MAX4509 (Dual 4-to-1 Mux)
None
NO1B
NO2B
NO3B
NO4B
COMB
_______________________________________________________________________________________
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