MAX4511ESE+ Maxim Integrated Products, MAX4511ESE+ Datasheet - Page 9

• Manufacturer Part Number: MAX4511ESE+
• Description: IC SWITCH QUAD SPST 16SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX4511ESE+

• Function: Switch
• Circuit: 4 x SPST - NC
• On-state Resistance: 160 Ohm
• Voltage Supply Source: Single, Dual Supply
• Voltage - Supply, Single/dual (±): 9 V ~ 36 V, ±4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Number Of Switches: Quad
• Switch Configuration: SPST
• On Resistance (max): 200 Ohms
• On Time (max): 600 ns
• Off Time (max): 500 ns
• Off Isolation (typ): - 62 dB
• Supply Voltage (max): +/- 18 V
• Supply Voltage (min): +/- 4.5 V
• Maximum Power Dissipation: 842 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Description/function: Analog Switch
• Input Level: CMOS, TTL
• Minimum Operating Temperature: - 40 C
• Off State Leakage Current (max): 10 nA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 1. Block Diagram
The MAX4511/MAX4512/MAX4513 differ considerably
from traditional fault-protection switches, with several
advantages. First, they are constructed with two paral-
lel FETs, allowing very low on-resistance when the
switch is on. 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 termi-
nal, allowing rail-to-rail signal operation. Third, when a
signal on NC_ or NO_ exceeds the supply rails by
about 50mV (a fault condition), the voltage on COM_ is
limited to the appropriate polarity supply voltage.
Operation is identical for both fault polarities. The fault-
protection extends to ±36V from GND.
During a fault condition, the NO_ or NC_ input pin
becomes high impedance regardless of the switch
state or load resistance. If the switch is on, the COM_
output current is furnished from the V+ or V- pin by
“booster” FETs connected to each supply pin. These
FETs can typically source or sink up to 10mA.
Overview of MAX4511/MAX4512/MAX4513
(NC_)
GND
NO_
IN_
V+
V-
_______________________________________________________________________________________
-ESD DIODE
Quad, Rail-to-Rail, Fault-Protected,
NC SWITCH
FAULT
FAULT
HIGH
LOW
ON
NORMALLY OPEN SWITCH CONSTRUCTION
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 ±40V.
The COM_ pins are not fault protected; they act as nor-
mal CMOS switch pins. If a voltage source is connect-
ed 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 protection diodes,
possibly damaging the device (see Absolute Maximum
Ratings).
These switches have identical pinouts to common non-
fault-protected CMOS switches. Care should be exer-
cised in considering them for direct replacements in
existing printed circuit boards, however, since only the
NO_ and NC_ pins of each switch are fault protected.
Internal construction is shown in Figure 1, with the ana-
log signal paths shown in bold. A single normally open
SPST Analog Switches
N1
P1
Internal Construction
P2
Pin Compatibility
N2
COM_
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