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| 型號(hào)： | 5962-9214103MPX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.45 A SWITCHING REGULATOR, 65 kHz SWITCHING FREQ-MAX, CDIP8 |
| 封裝： | CERAMIC, DIP-8 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大小： | 894K |
| 代理商： | 5962-9214103MPX |
MAX4711/MAX4712/MAX4713
Detailed Description
The MAX4711/MAX4712/MAX4713 differ considerably
from traditional fault-protection switches, with several
advantages. First, they are constructed with two paral-
lel FET’s allowing very low on-resistance. Second, they
allow signals on the NC_ or NO_ pins that are within or
slightly beyond the supply rails to be passed through
the switch to the COM terminal, allowing rail-to-rail sig-
nal operation. Third, when a signal on NC_ or NO_
exceeds the supply rails by about 150mV (a fault con-
dition) the voltage on COM_ is limited to the same
polarity supply voltage. Operation is identical for both
fault polarities.
During a fault condition, the NO_ or NC_ input
becomes high impedance regardless of the switch
state or load resistance. If the switch is on, the COM_
output current is supplied from V+ or V- by the clamp
FET’s that are connected from COM to each supply.
These FET’s can typically source or sink up to 15mA.
When power is removed, the fault protection is still in
effect. In this case, the NO_ or NC_ terminals are a vir-
tual open circuit. The fault can be up to ±12V.
The COM_ pins are not fault-protected, they act as nor-
mal CMOS switch terminals. If a voltage source is con-
nected to any COM_ pin, it should be limited to the
supply voltages. Exceeding the supply voltage will
cause high currents to flow through the ESD-protected
diodes, possibly damaging the device (see Absolute
Maximum Ratings).
Pin Compatibility
These switches have identical pinouts to common non-
fault-protected CMOS switches. Care should be exer-
cised while considering them for direct replacements in
existing printed circuit boards since only the NO_ and
NC_ pins of each switch are fault-protected.
Internal Construction
Internal construction is shown in Figure 1, with the ana-
log signal paths shown in bold. A single NO switch is
shown; the NC configuration is identical except the
logic-level translator is inverting. The analog switch is
formed by the parallel combination of N-channel FET
(N1) and P-channel FET (P1), which are driven on and
off simultaneously according to the input fault condition
and the logic-level state.
Normal Operation
Two comparators continuously compare the voltage on
the NO_ (or NC_) pin with V+ and V-. When the signal
on NO_ or NC_ is between V+ and V- the switch acts
normally, with FETs N1 and P1 turning on and off in
response to IN_ signals. The parallel combination of
N1 and P1 forms a low-value resistor between NO_ (or
Fault-Protected, Low-Voltage,
Quad SPST Analog Switches
10
______________________________________________________________________________________
Pin Description
PIN
MAX4711
MAX4712
MAX4713
NAME
FUNCTION
1, 16, 9, 8
IN1, IN2, IN3,
IN4
Logic Inputs. Fault-protected to (V- + 12V).
2, 15, 10, 7
COM1,
COM2,
COM3, COM4
Analog Switch Common Terminals
3, 14, 11, 6
——
NC1, NC2,
NC3, NC4
Fault-Protected Analog Switch Normally Closed Terminals
—
3, 14, 11, 6
—
NO1, NO2,
NO3, NO4
Fault-Protected Analog Switch Normally Open Terminals
——
3, 6
NO1, NO4
Fault-Protected Analog Switch Normally Open Terminals
——
14, 11
NC2, NC3
Fault-Protected Analog Switch Normally Closed Terminals
44
4
V-
Negative Supply Voltage Input. Connect to GND for single-supply
operation.
55
5
GND
Ground
12
N.C.
No Connection. Not internally connected.
13
V+
Positive Supply Input
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| 5962-9214104MPA | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 NULL RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| 59629214701M2A | 制造商:TI 功能描述:SNJ54ABT244FK |
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| 5962-9214701MRA | 制造商:Texas Instruments 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST BiCMOS 20-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:BFFR/LINE DRVR 8CH NON-INV 3-ST BICMOS 20CDIP - Rail/Tube |
| 59629214701MSA | 制造商:TI 功能描述:SNJ54ABT244W |
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