MAX335EWG ,Serial Controlled, 8-Channel SPST SwitchELECTRICAL CHARACTERISTICS(V = +5V ±10%, V+ = 15V, V- = -15V, T = T to T , unless otherwise noted. ..
MAX3362AESA+T ,3.3V, High-Speed, RS-485/RS-422 Transceiver in SOT Packageapplications. • Half-Duplex OperationThe output level is guaranteed at +1.5V with a standard54Ω lo ..
MAX3362AKA#G16 ,3.3V, High-Speed, RS-485/RS-422 Transceiver in SOT PackageApplicationsPART R A NGE PACK A G E M A RK C O DEClock/Data Distribution M AX3362EKA- T -40 °C to ..
MAX3362AKA#TG16 ,3.3V, High-Speed, RS-485/RS-422 Transceiver in SOT Package3.3V, High-Speed, RS-485/RS-422MAX3362Transceiver in SOT Package
MAX3362EKA#G16 ,3.3V, High-Speed, RS-485/RS-422 Transceiver in SOT PackageElectrical Characteristics(V = +3.3V ±5%, T = T to T , unless otherwise noted. Typical values are a ..
MAX3362EKA#TG16 ,3.3V, High-Speed, RS-485/RS-422 Transceiver in SOT PackageFeaturesThe MAX3362 low-power, high-speed transceiver for• Ideal for Multidrop RS-485/RS-422 Clock/ ..
MAX702CSA. ,Power-Supply Monitor with Resetll/l lle/VI
Power-Suppiy Monitor with Reset
MAX702CSA+ ,Power-Supply Monitor with ResetApplicationsMAX702C/D 0°C to +70°C Dice● ComputersMAX702CPA 0°C to +70°C 8 PDIP● ControllersMAX702C ..
MAX702EPA ,Power-Supply Monitor with ResetFeatures
. Min 200ms RESET Pulse on Power-Up,
Power-Down, and During Low-Voltage Conditions
..
MAX702EPA ,Power-Supply Monitor with ResetApplications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical ..
MAX702EPA ,Power-Supply Monitor with Resetll/l lle/VI
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MAX702ESA ,Power-Supply Monitor with ResetGeneral Description
The MAX700/701/702 are supervisory circuits used to
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MAX335CNG-MAX335CWG-MAX335EWG
Serial Controlled, 8-Channel SPST Switch
_______________General DescriptionThe MAX335 analog switch with serial digital interface
offers eight separately controlled single-pole-single-
throw (SPST) switches. All switches conduct equally in
either direction, and on-resistance (100Ω) is constant
over the analog signal range.
These CMOS switches can operate continuously with
power supplies ranging from ±4.5V to ±20V and handle
rail-to-rail analog signals. Upon power-up, all switches are
off, and the internal serial and parallel shift registers are
reset to zero. The MAX335 is equivalent to two DG211
quad switches but controlled by a serial interface.
The interface is compatible with the Motorola SPI inter-
face standard. Functioning as a shift register, this serial
interface allows data (at DIN) to be locked in synchro-
nous with the rising edge of clock (SCLK). The shift reg-
ister's output (DOUT) enables several MAX335s to be
daisy chained.
________________________ApplicationsSerial Data Acquisition and Process Control
Avionics
Signal Routing
Networking
____________________________Features8 Separately Controlled SPST SwitchesSPI-Compatible Serial InterfaceAccepts ±15V Analog SwingsMultiple Devices Can Be Daisy Chained
______________Ordering Information
MAX335
Serial Controlled, 8-Channel SPST Switch
__________________Pin Configuration19-0220; Rev 2; 7/96
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
SPI is a trademark of Motorola Corp.
________________Functional Diagram
MAX335
Serial Controlled, 8-Channel SPST Switch
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VL= +5V ±10%, V+ = 15V, V- = -15V, TA = TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
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 V-
V+........................................................................................44V
GND....................................................................................25V..................................................(GND - 0.3V) to (V+ + 0.3V)
SCLK,CS, DIN, DOUT, NO_, COM_..............V- -2V to V+ +2V
or 30mA, whichever occurs first
Continuous Current (any terminal)......................................30mA
Peak Current, NO or COM
(pulsed at 1ms, 10% duty cycle MAX)..........................100mA
Continuous Power Dissipation (TA = +70°C) (Note 1)
Narrow Plastic DIP (derate 13.33mW/°C above +70°C)..1067mW
Wide SO (derate 11.76mW/°C above +70°C)....................941mW
Narrow CERDIP (derate 12.50mW/°C above +70°C)......1000mW
Operating Temperature Ranges
MAX335C_ _.......................................................0°C to +70°C
MAX335E_ _....................................................-40°C to +85°C
MAX335MRG.................................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
Note 1:All leads are soldered or welded to PC boards.
MAX335
Serial Controlled, 8-Channel SPST Switch
ELECTRICAL CHARACTERISTICS (continued)(VL= +5V ±10%, V+ = 15V, V- = -15V, TA = TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
Note 2:When VLfalls below this voltage, all switches are set off and the internal shift register is cleared (all zero).
Note 3:Guaranteed, not production tested.
MAX335
Serial Controlled, 8-Channel SPST Switch
Note 4:This specification guarantees that data at DOUTnever appears before SCLK's falling edge.
TIMING CHARACTERISTICS OF SERIAL DIGITAL INTERFACE (Figure 1)(VL= +5V ±10%, V+ = +15V, V- = -15V, TA = TMINto TMAX, unless otherwise noted.)
MAX335
Serial Controlled, 8-Channel SPST SwitchRON vs. VCOM AND
POWER-SUPPLY VOLTAGE
MAX335-01
VCOM (V)
RON vs. VCOM AND
TEMPERATURE
MAX335-02
VCOM (V)
tON, tOFF vs. VCOM
MAX335-03
VCOM (V)
tON
, t
OFF
(ns)
±20
DATA-HOLD TIME vs.
POWER-SUPPLY VOLTAGEMAX335-04
SUPPLY VOLTAGE (V)
DATA-HOLD TIME (ns)
±15
-20±10
CHARGE INJECTION vs. VCOM
MAX335-07
VCOM (V)
Q (pC)
±20
DATA-SETUP TIME vs.
POWER SUPPLYMAX335-05
SUPPLY VOLTAGE (V)
DATA-SETUP TIME (ns)
±15±10
LEAKAGE CURRENT vs.
TEMPERATURE
MAX335-06
TEMPERATURE (°C)
ON-LEAKAGE (pA)
+125
-55+25
SUPPLY vs. TEMPERATURE
MAX335-08
TEMPERATURE (°C)
I+, I-, I
+125
-55+25
MINIMUM SCLK PULSE WIDTH
vs. POWER SUPPLYMAX335-09
SUPPLY VOLTAGE (V)
SCLK (ns)
±20±10
±15
__________________________________________Typical Operating Characteristics(V+ = +15V, V- = -15V, VL= 5V, TA = +25°C, unless otherwise noted.)
______________Detailed Description
Serial Digital Interface
Basic OperationRefer to Figure 2. The MAX335 interface can be
thought of as an 8-bit shift register controlled by CS.
While CSis low, input data appearing at DIN is clocked
into the shift register synchronous with SCLK’s rising
edge. The data is an 8-bit word, each bit controlling
one of eight switches in the MAX335 (Table 1). DOUT is
the output of the shift register, with data appearing syn-
chronous with SCLK’s falling edge. Data at DOUT is
simply the input data delayed by eight clock cycles.
When shifting the input data, D7 is the first bit in and
out of the shift register. While shifting data, the switches
remain in their original configuration. When the 8 bits of
data have been shifted in, CSis brought high. This
updates the new switch configuration and inhibits fur-
ther data from entering the shift register. Transitions at
DIN and SCLK have no effect when CSis high, and
DOUT holds the last bit in the shift register.
The MAX335 three-wire serial interface is compatible
with the SPI™ and Microwire™ standards. If interfacing
with a Motorola processor serial interface, set CPOL = 0.
The MAX335 is considered a slave device (Figures 2
and 3). Upon power-up, the shift register contains all
zeros, and all switches are off.
The latch that drives the analog switch is only
updated on the rising edge of CSwhen SCLK is low.
If SCLK is high when CSrises, the latch will not be
updated until SCLK goes low. The CPOL = 1, CPHA = 1
SPI configuration does not update the latch correctly.
Daisy ChainingFor a simple interface using several MAX335s, “daisy
chain” the shift registers as shown in Figure 5. The CS
pins of all devices are connected together, and a
stream of data is shifted through the MAX335s in
series. When CSis brought high, all switches are
updated simultaneously. Additional shift registers may
be included anywhere in series with the MAX335 data
chain.
Addressable Serial InterfaceWhen several serial devices are configured as slaves,
addressable by the processor, DIN pins of each
MAX335 are connected together (Figure 6). Address
decode logic individually controls CSof each slave
device. When a slave is selected, its CSis brought low,
data is shifted in, and CSis brought high to latch the
data. Typically, only one slave is addressed at a time.
DOUT is not used.
Digital FeedthroughDigital feedthrough energy measures 100nV-sec, which
means that with no filtering at the signal channel,
feedthrough from a sharply rising clock edge into an
unfiltered switch channel can be measured at 1Vp-p for
100ns. However, even 100pF capacitance in the switch
channel, when combined with the switch resistance,
yields a filter that reduces this transient to 10mVp-p
typical. To reduce digital feedthrough, hysteresis
(150mV typ)was added to the SCLK input so triangle
or sine waves may be used.
MAX335
Serial Controlled, 8-Channel SPST Switch
