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MAX322CUAMAXIM ?N/a17avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320CPAMAXIM ?N/a6avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320CPAMAXIMN/a542avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320CSAMAXIMN/a66avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320CSAMAXIM ?N/a7avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320CUAMAXIMN/a86avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320EPAMAXIMN/a600avaiPrecision, Dual-Supply, SPST Analog Switches
MAX320ESAMAXIMN/a2avaiPrecision, Dual-Supply, SPST Analog Switches
MAX321CSAMAXIMN/a2500avaiPrecision, Dual-Supply, SPST Analog Switches
MAX321ESAMAXIMN/a2500avaiPrecision, Dual-Supply, SPST Analog Switches
MAX322CPAMAXIM ?N/a35avaiPrecision, Dual-Supply, SPST Analog Switches
MAX322CSAMAXIMN/a38avaiPrecision, Dual-Supply, SPST Analog Switches
MAX322CUAMAXN/a169avaiPrecision, Dual-Supply, SPST Analog Switches
MAX322EPAMAXIMN/a2500avaiPrecision, Dual-Supply, SPST Analog Switches


MAX321CSA ,Precision, Dual-Supply, SPST Analog SwitchesELECTRICAL CHARACTERISTICS(V+ = +5V ±10%, V- = -5V ±10%, VINH = 3.5V, VINL = 2.5V, TA = TMIN to TMA ..
MAX321CSA+ ,Precision, Dual Supply, SPST, Analog CMOS SwitchesMAX320/MAX321/MAX32219-0350; Rev 0; 12/94Precision, Dual-Supply, SPST Analog Sw itches_____________ ..
MAX321CUA+ ,Precision, Dual Supply, SPST, Analog CMOS SwitchesGeneral Description ________
MAX321ESA ,Precision, Dual-Supply, SPST Analog SwitchesMAX320/MAX321/MAX32219-0350; Rev 0; 12/94Precision, Dual-Supply, SPST Analog Switches_______________
MAX321ESA+T ,Precision, Dual Supply, SPST, Analog CMOS SwitchesGeneral Description ________
MAX3220BCAP ,3V to 5.5V, up to 250kbps true RS-232 transceiver with 4microA autoshutdown plus and power-on reset. Reset threshold 2.85V.Applications ______________Ordering InformationPalmtop ComputersPART* TEMP. RANGE PIN-PACKAGEPortab ..
MAX6454UT29S ,uP Supervisors with Separate VCC Reset and Manual Reset OutputsFeaturesThe MAX6453–MAX6456 are low-power, dual-voltage Precision Factory-Set Reset Thresholds Fro ..
MAX6454UT46S-T ,4.625 V, mP supervisor with separate Vcc reset and manual reset outputFeaturesThe MAX6453–MAX6456 are low-power, dual-voltage Precision Factory-Set Reset Thresholds Fro ..
MAX6455UT16S+T ,µP Supervisors with Separate VCC Reset and Manual Reset OutputsApplicationsRESET 1 6 MR RESET 1 6 MR● Set-Top Boxes ● Consumer ElectronicsMAX6453 MAX6455● DVD Pla ..
MAX6456UT29S+T ,µP Supervisors with Separate VCC Reset and Manual Reset OutputsFeaturesThe MAX6453–MAX6456 are low-power, dual-voltage ● Precision Factory-Set Reset Thresholds Fr ..
MAX6457UKD0B+T ,High-Voltage, Low-Current Voltage Monitors in SOT Packagesapplications. Each device is available in a smallPin Configurations appear at end of data sheet.SOT ..
MAX6457UKD3B+T ,High-Voltage, Low-Current Voltage Monitors in SOT Packagesapplications or allows(50µs, 150ms)the device to operate in transparent mode. The MAX6458 Internal ..


MAX320CPA-MAX320CSA-MAX320CUA-MAX320EPA-MAX320ESA-MAX321CSA-MAX321ESA-MAX322CPA-MAX322CSA-MAX322CUA-MAX322EPA
Precision, Dual-Supply, SPST Analog Switches
_______________General Description
The MAX320/MAX321/MAX322 are precision, dual,
SPST analog switches designed to operate from ±3V to
±8V dual supplies. The MAX320 has two normally open
(NO) switches and the MAX321 has two normally
closed (NC) switches. The MAX322 has one NO and
one NC switch. Low power consumption (1.25mW)
makes these parts ideal for battery-powered equip-
ment. They offer low leakage currents (100pA max) and
fast switching speeds (tON= 150ns max, tOFF= 100ns
max).
The MAX320 series, powered from ±5V supplies, offers
35Ωmax on-resistance (RON), 2Ωmax matching
between channels, and 4Ωmax RONflatness.
These switches also offer 5pC max charge injection
and a minimum of 2000V ESD protection per Method
For equivalent devices specified for single-supply oper-
ation, see the MAX323/MAX324/MAX325 data sheet.
For quad versions of these switches, see the
MAX391/MAX392/MAX393 data sheet.
________________________Applications

Battery-Operated SystemsSample-and-Hold Circuits
Heads-Up DisplaysGuidance and Control Systems
Audio and Video SwitchingMilitary Radios
Test EquipmentCommunications Systems
±5V DACs and ADCsPBX, PABX
____________________________Features
Low On-Resistance, 35Ωmax (16Ωtypical)RONMatching Between Channels <2ΩRONFlatness <4ΩGuaranteed Charge Injection <5pCBipolar Supply Operation (±3V to ±8V)Low Power Consumption, <1.25mWLow Leakage Current Over Temperature,
<2.5nA at +85°C
Fast Switching, tON<150ns, tOFF<100nsGuaranteed Break-Before-Make (MAX322 only)
______________Ordering Information
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches
________________________________________________________________Maxim Integrated Products1
_____________________Pin Configurations/Functional Diagrams/Truth Tables
Call toll free 1-800-998-8800 for free samples or literature.

19-0350; Rev 0; 12/94
Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.
** Contact factory for availability.
Voltage Referenced to V-................................................................(V- - 0.3V) to +17V
IN_, COM_, NC_, NO_ (Note 1).........(V- - 0.3V) to (V+ + 0.3V)
Continuous Current (any terminal)......................................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max)..............................100mA
ESD per Method 3015.7..................................................>2000V
Continuous Power Dissipation
Plastic DIP (derate 9.09mW/°C above +70°C).............727mW
Narrow SO (derate 5.88mW/°C above +70°C).............471mW
µMAX (derate 4.10mW/°C above +70°C).....................330mW
CERDIP (derate 8.00mW/°C above +70°C)..................640mW
Operating Temperature Ranges
MAX32_C_ _........................................................0°C to +70°C
MAX32_E_ _......................................................-40°C to +85°C
MAX32_MJA...................................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches_______________________________________________________________________________________

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.
ABSOLUTE MAXIMUM RATINGS
Note 1:
Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to
maximum current rating.
ELECTRICAL CHARACTERISTICS

(V+ = +5V ±10%, V- = -5V ±10%, VINH= 3.5V, VINL= 2.5V, TA= TMINto TMAX, unless otherwise noted.)
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS

(V+ = +5V ±10%, V- = -5V ±10%, VINH= 3.5V, VINL= 2.5V, TA= TMINto TMAX, unless otherwise noted.)
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:
Guaranteed by design.
Note 4:
ΔRON= ΔRONmax - ΔRONmin.
Note 5:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Note 6:
Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 7:
Off Isolation = 20 log10[ VCOM⁄ (VNC or VNO)], VCOM= output, VNC or VNO= input to off switch.
Note 8:
Between any two switches.
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics

(V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.)
OFF LEAKAGE CURRENT vs. TEMPERATURE
MAX320-05
TEMPERATURE (°C)
OFF LEAKAGE CURRENT (nA)
ON-RESISTANCE vs. VOLTAGE AT COM PIN
MAX320-01
VCOM (V)-2468-3-4-234
ON-RESISTANCE vs. VOLTAGE AT COM PIN
(OVER TEMPERATURE)

MAX320-02
VCOM (V)0125-1
ON-RESISTANCE MATCH vs. VOLTAGE
AT COM PIN (OVER TEMPERATURE)

MAX320-03
VCOM (V)
ON LEAKAGE CURRENT vs. TEMPERATURE
MAX320-04
TEMPERATURE (°C)
ON LEAKAGE CURRENT (nA)
SUPPLY CURRENT vs. TEMPERATURE
MAX320-07
TEMPERATURE (°C)
ISUPPLY45-35-155105125
CHARGE INJECTION vs.
VOLTAGE AT COM PIN
MAX320-06
VCOM (V)
Q (pC)05
-10-3-21234
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches
_______________________________________________________________________________________5
__________Applications Information
Logic Levels

Calculate the logic thresholds typically as follows: VIH=
(V+ - 1.5V) and VIL= (V+ - 2.5V).
Power-supply consumption is minimized when IN1 and
IN2 are driven with logic-high levels equal to V+ and logic-
low levels well below the calculated VILof (V+ - 2.5V). IN1
and IN2 can be driven to V- without damage.
Analog Signal Levels

Analog signals that range over the entire supply voltage
(V- to V+) can be switched, with very little change in on-
resistance over the entire voltage range (see Typical
Operating Characteristics). All switches are bidirec-
tional, so NO_, NC_, and COM_ pins can be used as
either inputs or outputs.
Power-Supply Sequencing
and Overvoltage Protection

Do not exceed the absolute maximum ratings, because
stresses beyond the listed ratings may cause perma-
nent damage to the devices.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+, followed by V-,
before applying analog signals or logic inputs, especial-
ly if the analog or logic signals are not current-limited. If
this sequencing is not possible, and if the analog or
logic inputs are not current-limited to <30mA, add two
small signal diodes (D1, D2) as shown in Figure 1.
Adding protection diodes reduces the analog signal
range to a diode drop (about 0.7V) below V+ for D1,
and a diode drop above V- for D2. Leakage is not
affected by adding the diodes. On-resistance increas-
es by a small amount at low supply voltages. Maximum
supply voltage (V- to V+) must not exceed 17V.
Adding protection diode D1 causes the logic thresh-
olds to be shifted relative to the positive power-supply
rail. This can be significant when low positive supply
voltages (+5V or less) are used. Driving IN1 and IN2 all
the way to the supply rails (i.e., to a diode drop higher
than the V+ pin or a diode drop lower than the V- pin) is
always acceptable.
The protection diodes D1 and D2 also protect against
some overvoltage situations. With the circuit of Figure 1,
if the supply 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. For example, with ±5V supplies, analog sig-
nals up to ±8.5V will not damage the circuit of Figure 1.
If only a single fault signal is present, the fault voltage
can rise to +12V or to -12V without damage.
_____________________Pin Description

Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
MAX320/MAX321/MAX322
Precision, Dual-Supply, SPST
Analog Switches_______________________________________________________________________________________

Figure 4. Charge Injection
Figure 2. Switching Time
Figure 3. Break-Before-Make Interval (MAX322 only)
______________________________________________Test Circuits/Timing Diagrams
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