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| 型号： | MAX354CWE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC MULTIPLEXER 8X1 16SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 46 |
| 功能： | 多路复用器 |
| 电路： | 1 x 8:1 |
| 导通状态电阻： | 350 欧姆 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 36 V，±4.5 V ~ 18 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
Figure 10 shows the condition of an off channel with V+
and V- present. As with Figures 8 and 9, either an N-
channel or a P-channel device will be off for any input
voltage from -40V to +40V. The leakage current with
negative overvoltages will immediately drop to a few
nanoamps at +25°C. For positive overvoltages, that
fault current will initially be 10A or 20A, decaying
over a few seconds to the nanoamp level. The time
constant of this decay is caused by the discharge of
stored charge from internal nodes and does not com-
promise the fault-protection scheme.
Figure 11 shows the condition of the on channel with
V+ and V- present. With input voltages less than ±10V,
all three FETs are on and the input signal appears at
the output. If the input voltage exceeds V+ minus the
N-channel threshold voltage (VTN), the N-channel FET
will turn off. For voltages more negative than V- minus
the P-channel threshold (VTP), the P-channel device will
turn off. Since VTN is typically 1.5V and VTP is typically
3V, the multiplexer’s output swing is limited to about -12V
to +13.5V with ±15V supplies.
Switching Characteristics
and Charge Injection
Table 1 shows typical charge injection levels versus
power-supply voltages and analog input voltage. The
charge injection that occurs during switching creates a
voltage transient whose magnitude is inversely propor-
tional to the capacitance on the multiplexer output.
MAX354/MAX355
Fault-Protected Analog Multiplexers
_______________________________________________________________________________________
9
G
D
Q1
S
-25V
N-CHANNEL MOSFET
IS TURNED ON
BECAUSE VGS = +25V
-25V
OVERVOLTAGE
P-CHANNEL
MOSFET IS OFF
G
D
Q2
S
G
D
Q3
S
Figure 8. -25V Overvoltage with Multiplexer Power Off
+15V
-15V
Q1
N-CHANNEL MOSFET
IS TURNED ON
BECAUSE VGS = +10V
-25V
OVERVOLTAGE
P-CHANNEL
MOSFET IS OFF
N-CHANNEL
MOSFET IS OFF
+15V FROM
DRIVERS
-15V FROM
DRIVERS
+25V FORCED
ON COMMON
OUTPUT LINE BY
EXTERNAL CIRCUITRY
Q2
Q3
Figure 10. -25V Overvoltage on an Off Channel with
Multiplexer Power Supply On
G
D
Q1
S
N-CHANNEL MOSFET
IS TURNED OFF
BECAUSE VGS = -25V
+25V
OVERVOLTAGE
G
D
Q2
S
G
D
Q3
S
Figure 9. +25V Overvoltage with Multiplexer Power Off
+15V
-15V
Q1
N-CHANNEL MOSFET
IS TURNED OFF
BECAUSE VGS = -10V
+25V
OVERVOLTAGE
13.5V
VTN = 1.5V
N-CHANNEL
MOSFET IS ON
-15V FROM
DRIVERS
+15V FROM
DRIVERS
13.5V
OUTPUT
Q2
Q3
Figure 11. +25V Overvoltage Input to the On Channel
Table 1. MAX354 Charge Injection
Test Conditions: CL, = 1000pF on mux output; the tabulated
analog input level is applied to channel 1; channels 2–8 inputs
are open circuited. EN = +5V, VA1 = VA2 = 0V, VO is toggled at
a 2kHz rate between 0V and 3V. +100pC of charge creates a
+100mV step when injected into a 1000pF load capacitance.
Supply Voltage
Analog Input Level
Injected Charge
±5V
+2V
0V
-2V
52pC
35pC
16pC
±10V
+5V
0V
-5V
105pC
65pC
25pC
±15V
+10V
0V
-10V
180pC
80pC
15pC
相关PDF资料 |
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|---|---|
| MAX353CSE | IC SWITCH QUAD SPST 16SOIC |
| MAX352CSE | IC SWITCH QUAD SPST 16SOIC |
| MAX351CSE | IC SWITCH QUAD SPST 16SOIC |
| MAX335CWG | IC SWITCH OCTAL SPST 24SOIC |
| MAX335CNG | IC SWITCH OCTAL SPST 24DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX354CWE+ | 功能描述:多路器开关 IC 8:1 Fault-Protected Analog MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX354CWE+T | 功能描述:多路器开关 IC 8:1 Fault-Protected Analog MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX354CWE-T | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX354EPE | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX354EPE+ | 功能描述:多路器开关 IC 8:1 Fault-Protected Analog MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
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