MAX31911_12 MAXIM [Maxim Integrated Products], MAX31911_12 Datasheet
MAX31911_12
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MAX31911_12 Summary of contents
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General Description The MAX31911 industrial interface serializer translates, conditions, and serializes the 24V digital output of sen- sors and switches used in industrial, process, and build- ing automation to 5V CMOS-compatible signals required by microcontrollers. It provides the front-end interface ...
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ABSOLUTE MAXIMUM RATINGS (Voltages relative to GND.) Voltage Range on V ............................. -0.3V to +45V CC24V Voltage Range on IN1–IN8 ............................ -0.3V to +45V Voltage Range on IN1–IN8 (through 2.2kω resistors) ............................. -45V to +45V Voltage Range on DB0/DB1, CLK, ...
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DC ELECTRICAL CHARACTERISTICS ( 36V -40NC to +150NC, unless otherwise noted.) (Note 2) CC24V J PARAMETER Field-Supply Current Field-Supply UVLO Off/On Field-Supply UVLO On/Off Field Input Threshold High- to-Low Field Input Threshold Low-to- High Field ...
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AC ELECTRICAL CHARACTERISTICS ( 36V -40NC to +150NC, unless otherwise noted.) (Note 2) CC24V J PARAMETER Field Input Pulse Width ESD AC ELECTRICAL CHARACTERISTICS: SPI INTERFACE ( 36V -40NC to ...
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R = 15kω, unless otherwise noted.) A REF POWER-SUPPLY CURRENT vs. V FIELD SUPPLY CC24V 1.60 1.55 1.50 1.45 1.40 1.35 1. SUPPLY VOLTAGE (V) CURRENT LIMIT VARIATION vs. TEMPERATURE 3.0 2.9 2.8 2.7 ...
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R = 15kω, unless otherwise noted.) A REF LDO LOAD REGULATION 5. 50mA 5VOUT 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4. SUPPLY VOLTAGE (V) LDO OUTPUT VOLTAGE vs. TEMPERATURE ...
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PIN NAME 1, 2 DB0, DB1 11, 18, IN1–IN8 20 10, 12, RT1–RT8 17, 19 RIREF 14 V CC24V 15 5VOUT 16 FAULT 23 SOUT CLK 26 ...
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R1 V CC24V C1 R INX f IN1–8 IN1–8 RT1–8 Detailed Description Input Current Clamp The MAX31911 industrial interface serializer inputs (IN1–IN8) sense the state (on vs. off) of field sen- sors by monitoring both voltage and current flowing ...
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Reading Serial Data The filtered outputs of the input comparators are latched into a shift register at the falling edge of CS. Clocking the CLK pin, while CS is held low, shifts the latched data out of SOUT 1 bit ...
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Applications Information EMC Standards Compliance The external components shown in device to operate in harsh industrial environments. Components were chosen to assist in suppression of voltage burst and surge transients, allowing the Table 2. Recommended Components COMPONENT C0 4.7nF, 2kV ...
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Serial-Port Operation Serial output of the device functions in one of two modes, depending on the MODESEL setting With MODESEL = 0, the device output includes a 5-bit CRC, an undervoltage alarm, and an overtemperature alarm. See the Detailed Description ...
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INX f IN1–8 C INX INX f IN1–8 C INX Figure 3. 16-Input Application Circuit Maxim Integrated Industrial, Octal, Digital Input JUMPERS TO 5VOUT AND GND 5VOUT V CC24V ...
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CLK IN8 IN7 IN6 IN5 SOUT CS IN8 –IN0 VALID Figure 4. SPI Communication Example t CSPW CS SOUT Figure 5. SPI Timing Diagram 1 t SU2 CS CLK Figure 6. SPI Timing Diagram 2 Maxim Integrated Industrial, Octal, Digital ...
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Chip Information PROCESS: S45JRS Ordering Information PART TEMP RANGE MAX31911AUI+ -40NC to +125NC MAX31911AUI+T -40NC to +125NC +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. Maxim Integrated Industrial, Octal, Digital Input For the latest package outline information and land ...
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REVISION REVISION NUMBER DATE 0 8/12 Initial release Changed the supply voltage minimum from 10V to 7V; changed the current 1 9/12 limits in the EC table Note 5; added the CRC polynomial to the Reading Serial Data section Maxim ...