MAX31911AUI+ by Analog Devices

Industrial, Octal, Digital Input Translator/Serializer

Status: Active
Series: MAX31911
RoHS: Unknown
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The MAX31911 industrial interface serializer translates, conditions, and serializes the 24V digital output of sensors and switches used in industrial, process, and building automation to 5V CMOS-compatible signals required by microcontrollers. It provides the front-end interface circuit of a programmable logic controller (PLC) digital input module. The device features integrated current limiting, lowpass filtering, and channel serialization. Input current limiting allows a significant reduction in power consumed from the field voltage supply as compared to traditional discrete resistor-divider implementations. Selectable on-chip lowpass filters allow flexible debouncing and filtering of sensor outputs based on the application. On-chip serialization allows a drastic reduction in the number of optocouplers used for isolation. The device serializer is stackable so that any number of input channels can be serialized and output through only one SPI-compatible port. This reduces the number of optocouplers needed to only three, regardless of the number of input channels. For enhanced robustness with respect to high-frequency noise and fast electrical transients, a multibit CRC code is generated and transmitted through the SPI port for each 8 bits of data. The on-chip 5V voltage regulator can be used to power external optocouplers, digital isolators, or other external 5V circuitry. For ultra-low-power applications, Maxim Integrated offers a pin-compatible version of this device, the MAX31910. The MAX31910 uses patent-pending circuit techniques to achieve further reduction of power beyond what is possible by input current limiting alone. The MAX31912 and MAX31913 versions include energy-less LED drivers while maintaining pin compatibility.

Prices starting from US$2.61


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$2.62
147
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Logo for element14 element14 US$2.67
147
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Features

Very Low Power and Heat Dissipation Low Quiescent Current (1.4mA typ) Highly Accurate and Stable Input Current Limiters, Adjustable from 0.5mA to 6mA
Low Quiescent Current (1.4mA typ)
Highly Accurate and Stable Input Current Limiters, Adjustable from 0.5mA to 6mA
High Integration Reduces BOM Count, Board Size, and System Cost Eight High-Voltage Input Channels (36V max) On-Chip 8-1 Serialization with SPI Interface On-Chip 5V Regulator On-Chip Overtemperature Indicator On-Chip Field Supply Voltage Monitor Integrated Debounce Filters, Selectable from 0 to 3ms
Eight High-Voltage Input Channels (36V max)
On-Chip 8-1 Serialization with SPI Interface
On-Chip 5V Regulator
On-Chip Overtemperature Indicator
On-Chip Field Supply Voltage Monitor
Integrated Debounce Filters, Selectable from 0 to 3ms
Robust Features and Performance for Industrial Environments Multibit CRC Code Generation and Transmission for Error Detection and More Reliable Data Transmission High ESD Immunity on All Field Input Pins
Multibit CRC Code Generation and Transmission for Error Detection and More Reliable Data Transmission
High ESD Immunity on All Field Input Pins
Accepts Industry Standard Input Types Configurable for IEC 61131-2 Input Types 1, 2, and 3
Configurable for IEC 61131-2 Input Types 1, 2, and 3
Flexible Power Supply Capability Enables Usage in 5V, 12V, 24V, and Higher Voltage Systems Wide Operating Field Supply Range of 7V to 36V Can Be Powered From the Logic-Side Using a 5V Supply
Wide Operating Field Supply Range of 7V to 36V
Can Be Powered From the Logic-Side Using a 5V Supply

Specifications

Digital Input/Output Digital Input
Interface Type SPI
# Channels 8
VSUPPLY (V) (min) 7
VSUPPLY (V) (max) 36
ISUPPLY (µA) (typ) 1.4
Digital Input Type Type 1Type 2Type 3
Min. Detectable Field Input Pulse Width (µs) 1
Oper. Temp. (°C) -40 to +125
Package/Pins TSSOP/28
BudgetaryPrice (See Notes) 2.1


MAX31911AUI+ Semiconductors - ICs by Analog Devices

TRANSLATOR/SERIALISER 8-BIT TSSOP-28

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

SERDES Function Serialiser
Data Rate -
IC Input Type Analogue
IC Output Type Digital
Driver Case Style TSSOP
No. of Pins 28Pins
Supply Voltage Min 7V
Supply Voltage Max 36V
No. of Inputs 8
No. of Outputs 1Outputs
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

TRANSLATOR/SERIALISER, 8-BIT, TSSOP-28 | Farnell Contract
Translator/Serialiser, 8-Bit, Tssop-28 | Newark Electronics

Frequently Asked Questions

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Is the MAX31911AUI+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Farnell Contract, Newark Electronics and element14 have stock available or on a lead time for MAX31911AUI+ .

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