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MAX4626EUK+T |MAX4626EUKTMAXIMN/a911avai0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
MAX4626EUK+TMAXICN/a2500avai0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
MAX4627EUK+N/AN/a2500avai0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
MAX4627EUK+T |MAX4627EUKTMAXIMN/a5890avai0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
MAX4628EUT+TMAXINN/a8288avai0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches


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MAX4626EUK+T-MAX4627EUK+-MAX4627EUK+T-MAX4628EUT+T
0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
General Description
The MAX4626/MAX4627/MAX4628 are low-on-resis-
tance, low-voltage, single-pole/single-throw (SPST)
analog switches that operate from a +1.8V to +5.5V sin-
gle supply. The MAX4626 is normally open (NO), and
the MAX4627 is normally closed (NC). The MAX4628 is
normally open (NO) and has two control inputs. These
devices also have fast switching speeds (tON= 50ns
max, tOFF= 30ns max).
When powered from a +5V supply, the MAX4626/
MAX4627/MAX4628 offer 0.5Ωmax on-resistance
(RON) with 0.1Ωmax RONflatness, and their digital
logic inputs are TTL compatible. These switches also
feature overcurrent protection to prevent device dam-
age from short circuits and excessive loads.
The MAX4626 is pin compatible with the MAX4514, and
the MAX4627 is pin compatible with the MAX4515. The
MAX4626/MAX4627 are available in SOT23-5 pack-
ages; the MAX4628 is available in a SOT23-6 package.
Applications

Power Routing
Battery-Operated Equipment
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
Features
Low RON
0.5Ωmax (+5V Supply)
0.9Ωmax (+3V Supply)
0.1Ωmax RONFlatness (+5V Supply)Overcurrent ProtectionSingle-Supply Operation (+1.8V to +5.5V)Available in SOT23 PackagesFast Switching: tON= 50ns max, tOFF= 30ns maxTTL-Logic Compatible at +5VPin Compatible with MAX4514 (MAX4626)
Pin Compatible with MAX4515 (MAX4627)
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches

TOP VIEW
SWITCHES SHOWN FOR LOGIC "0" INPUT.
GNDV+COM
SOT23-5
4
MAX4626
LOGIC

SWITCH

OFFGNDV+COM
SOT23-5
4
GND6V+IN
COM
SOT23-6
4
MAX4626MAX4627MAX4628
MAX4627
LOGIC

SWITCH

OFF
SWITCH

OFF
OFF
OFF
MAX4628

19-1633; Rev 0; 1/00
PART
MAX4626EUK-T
MAX4627EUK-T
-40°C to +85°C
-40°C to +85°C
TEMP. RANGEPIN-
PACKAGE

5 SOT23-5
5 SOT23-5
Pin Configurations/Functional Diagrams/Truth Tables
Ordering Information
TOP
MARK

ADMJ
ADMK
MAX4628EUT-T
-40°C to +85°CAADN6 SOT23-6
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V ±10%, GND = 0, VINH= 2.4V, VINL= 0.8V, TA= TMINto TMAX, unless otherwise noted.) (Notes 2, 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltages Referenced to GND
V+, IN, IN..................................................................-0.3V to +6V
NO, NC, COM (Note 1).................................-0.3V to (V+ + 0.3V)
Continuous Current NO, NC to COM .............................±400mA
Peak Switch Current NO, NC to COM
(pulsed at 1ms, 10% duty cycle max)........................±800mA
Continuous Power Dissipation (TA= 70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C)..........571mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C)..........571mW
Operating Temperature Range
MAX462_EU_....................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
Note 1:
Signals on NC, NO, or COM exceeding V+ or GND are clamped by internal diodes.
PARAMETERSYMBOLMINTYPMAXUNITS

Analog Signal RangeVCOM, VNO,
VNC0V+V
On-ResistanceRON= +25°C
0.050.10On-Resistance Flatness
(Note 4)RFLAT(ON)V+ = 4.5V; VCOM= 0, 1V,
2V; ICOM= 100mA= +25°C
0.10Ω0.22NO or NC Off-Leakage
Current
INO(OFF),
INC(OFF)= +25°C
-2020nA0.22COM Off-Leakage
CurrentICOM(OFF)TA= +25°C
-2020nA
COM On-Leakage
Current0.34
ICOM(ON)= +25°C
Overcurrent-Protection
Threshold Current TA= +25°C2.4A= +25°C4050Turn-On TimetONVNOor VNC= 3V, Figure 2TA= TMINto TMAX60ns= +25°C1830Turn-Off TimetOFFVNOor VNC= 3V, Figure 2TA= TMINto TMAX40ns= TMINto TMAX= TMINto TMAX= TMINto TMAX= TMINto TMAX
CONDITIONS
= TMINto TMAX
V+ = 5.5V; VCOM= 1V, 4.5V;
VNOor VNC= 4.5V, 1V
V+ = 5.5V; VCOM= 1V, 4.5V;
VNOor VNC= 4.5V, 1V
V+ = 5.5V; VCOM= 1V, 4.5V;
VNOor VNC= 1V, 4.5V, or
floating
V+ = 4.5V,
VNOor VNC= 3.5V,
ICOM= 100mA
Charge InjectionQCL= 1.0nF, VGEN = 0, RGEN= 0, TA= +25°C, Figure 340pC
Off-Isolation (Note 5)OIRRRL= 50Ω, CL= 5pF, f = 1MHz, TA= +25°C, Figure 4-51dB
COM Off-CapacitanceCCOM(OFF)f = 1MHz, TA= +25°C, Figure 565pF
COM On-CapacitanceCCOM(ON)f = 1MHz, TA= +25°C, Figure 5130pF
NC or NO Off-
CapacitanceCOFFf = 1MHz, TA= +25°C, Figure 565pF
DYNAMIC
ANALOG SWITCH
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +2.7V to +3.6V, GND = 0, VINH= 2.0V, VINL= 0.6V, TA= TMINto TMAX, unless otherwise noted.) (Notes 2, 3) 0V+VCOM, VNO,
VNCAnalog Signal Range
CONDITIONSUNITSMINTYPMAXSYMBOLPARAMETER
2.0VINHInput Voltage High-11IINLogic Input Current
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

(V+ = +5V ±10%, GND = 0, VINH= 2.4V, VINL= 0.8V, TA= TMINto TMAX, unless otherwise noted.) (Notes 2, 3)
0.40.8V+ = 2.7V,
VNOor VNC= 1.5V,
ICOM= 100mA
RONOn-Resistance= +25°C= TMINto TMAX
0.1ΩRFLAT(ON)On-Resistance Flatness
(Note 4)
V+ = 2.7V; ICOM= 100mA;
VNOor VNC= 0, 0.75V, 1.5V; TA= +25°C6580VNOor VNC = 1.5V,
Figure 2tONTurn-On Time902240VNOor VNC = 1.5V,
Figure 2tOFFTurn-Off Time50TA= TMINto TMAX= +25°C= TMINto TMAX= +25°C10V+ = 5.5V, VIN= 0 or V+I+Positive Supply Current1.85.5V+Power-Supply Range-11IINLogic Input Current2.4VINHInput Voltage High0.8VINLInput Voltage Low
CONDITIONSUNITSMINTYPMAXSYMBOLPARAMETER
LOGIC INPUT
SUPPLY
Note 2:
The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Note 3:
SOT-packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and
correlation.
Note 4:
Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the
specified analog signal range.
Note 5:
Off-Isolation = 20log10[VCOM/ (VNCor VNO)], VCOM= output, VNCor VNO= input to off switch.30CL= 1.0nF, Figure 3, VGEN= 0, RGEN= 0,
Ta = +25°CQCharge Injection0.6VINLInput Voltage Low10V = +3.6V, VIN= 0I+Positive Supply Current
ANALOG SWITCH
DYNAMIC
LOGIC INPUT
SUPPLY
tOFF
tON
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4626/7/8-04
TEMPERATURE (°C)
tON/
tOFF
(ns)
V+ = 5V
VNO or VNC = 3V
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4626/7/805
TEMPERATURE (°C)
ON/OFF-LEAKAGE (nA)
CHARGE INJECTION vs. COM VOLTAGE
MAX4626/7/8-06
VCOM (V)
Q (pC)
30k100k1M10M100M
FREQUENCY RESPONSE

MAX4626/7/8-07
FREQUENCY (Hz)
LOSS (dB)
PHASE (degrees)
V+ = 5V
50Ω = IN/OUT
OFF-ISOLATION
ON-LOSS
ON-PHASE
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX4626/7/8-08
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD VOLTAGE (V)
VIN RISING
VIN FALLING
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. COM VOLTAGE
OVER SUPPLY VOLTAGE
MAX4626/7/801
VCOM (V)
ICOM = 100mA
VCC = +1.8V
VCC = +2.0V
VCC = +2.3V
VCC = +2.5V
VCC = +3.0VVCC = +5V
ON-RESISTANCE vs. COM VOLTAGE
OVER TEMPERATURE
MAX4626/7/8-02
VCOM (V)
V + = 5V
ICOM = 100mA
TA = +85°C
TA = -40°C
TA = -55°C
TA = +25°C
TA = +105°C
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
456
MAX4626/7/8-03
VSUPPLY (V)
tON/
tOFF
(ns)
tOFF
tON
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
1k10010k100k
TOTAL HARMONIC DISTORTION
vs. FREQUENCY

MAX4626/7/8-09
FREQUENCY (Hz)
THD (%)
0.013A
OVERCURRENT RESPONSE

MAX4626/7/810
VCOM
2V/div
ICOM
1A/div
500μs/div
Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)
Pin Description

MAX4626

MAX4627

MAX4628
INInverted Digital Control Input (see MAX4628 Truth Table)
NAMEFUNCTION
COMAnalog Switch—CommonNOAnalog Switch—Normally OpenGNDGroundINDigital Control InputNCAnalog Switch—Normally ClosedV+Positive Supply Input
PIN
MAX4626/MAX4627/MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Detailed Description

The MAX4626/MAX4627/MAX4628 are low-on-resis-
tance (RON), low-voltage, single-pole/single-throw
(SPST) analog switches that operate from a +1.8V to
+5.5V single supply. The MAX4626 is normally open
(NO), and the MAX4627 is normally closed (NC). The
MAX4628 is normally open (NO) and has two control
inputs.
When powered from a +5V supply, their 0.5ΩRON
allows high continuous currents to be switched in a
variety of applications. In the event of an overcurrent
condition, these switches provide both current-limit and
thermal-shutdown protection.
Current-Limit Protection

The MAX4626/MAX4627/MAX4628 feature current-limit
protection circuitry. When the voltage drop across the
on switch reaches 0.6V (typ), the internal circuitry acti-
vates. The current limit is not instantaneous, but rather
integrates over time so that current limiting will not acti-
vate under momentary short-circuit conditions encoun-
tered when the switch output charges a small 0.1µF
capacitor. For sustained overcurrent conditions, the
switch turns off (opens). The switch turns on after 5ms
and, if the overload condition persists, the switch will
cycle off and on to produce a pulsed output. A direct
short circuit will be detected immediately, and the
switch will pulse on for 1µs, then remain off for 5ms.
Applications Information
Logic Inputs

The MAX4626/MAX4627/MAX4628 logic inputs can be
driven up to +5.5V regardless of the supply voltage. For
example, with a +3.3V supply, IN or INmay be driven
low to 0V and high to 5.5V. Driving IN or INRail-to-Rail®
minimizes power consumption.
Analog Signal Levels

Analog signals that range over the entire supply voltage
(V+ to GND) can be passed with very little change in
on-resistance (see Typical Operating Characteristics).
The switches are bidirectional, so the NO, NC, and
COM pins can be used as either inputs or outputs.
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum rat-
ings; stresses beyond the listed ratings may cause
permanent damage to the devices.

Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not
current limited. If this sequencing is not possible, and if
the analog inputs are not current limited to <20mA, add
a small-signal diode (D1) as shown in Figure 1. If the
analog signal can dip below GND, add D2. Adding
protection diodes reduces the analog range to a diode
drop (about 0.7V) below V+ (for D1), and a diode drop
above ground (for D2). On-resistance increases by a
small amount at low supply voltages. Maximum supply
voltage (V+) must not exceed +6V.
Adding protection diode D2 causes the logic thresh-
olds to be shifted relative to GND. TTL compatibility is
not guaranteed when protection diode D2 is added.
Protection diodes D1 and D2 also protect against some
overvoltage situations. With Figure 1’s circuit, if the sup-
ply voltage is below the absolute maximum rating, and
if a fault voltage up to the absolute maximum rating is
applied to an analog signal pin, no damage will result.
POSITIVE SUPPLY
COMNO
GND
MAX4626
MAX4627
MAX4628
Figure 1. Overvoltage Protection Using Two External Blocking
DiodesRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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