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MAX31953AUM+

Description
Serializers & Deserializers - Serdes Octal Industrial Digital Input Serializer with Isolated Interface
Categorysemiconductor    Analog mixed-signal IC   
File Size433KB,22 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
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MAX31953AUM+ Overview

Serializers & Deserializers - Serdes Octal Industrial Digital Input Serializer with Isolated Interface

MAX31953AUM+ Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerMaxim
Product CategorySerializers & Deserializers - Serdes
RoHSDetails
Moisture SensitiveYes
Factory Pack Quantity39
EVALUATION KIT AVAILABLE
MAX31953/MAX31963
Octal Industrial Digital Input with
Isolated SPI Interface
General Description
The MAX31953/MAX31963 translates eight current-sinking,
12V, 24V, or 48V industrial inputs to a galvanically isolated,
SPI-compatible, serial output that interfaces with 3V to 5.5V
logic. The galvanic isolation is certified to 500V
RMS
for 60
seconds, with creepage and clearance distances of 1.4 mm.
The input side (field-side) of the device includes a 5V logic
serial input for daisy-chaining data from other devices (such
as the MAX31911/MAX31913) through the devices’ isolated
serial port, eliminating the need for additional isolators. The
field-side of the devices requires a single 4.5V to 5.5V
supply. This power is supplied either directly or through the
integrated voltage regulator. The MAX31953 includes a
linear voltage regulator, while the MAX31963 includes an
efficient buck regulator that requires an external inductor.
Both regulators accept input voltages from 7V to 36V. The
logic-side of the devices operate from a single 3V to 5.5V
supply, which also sets the SPI logic level.
Benefits and Features
Reduced Power and Heat Dissipation
• Accurate Input-Current Limiters
• Energyless Field-Side LED Drivers
• Integrated Buck Regulator (MAX31963)
Configurability Enables Wide Range of Standard and
Custom Applications
• Eight High-Voltage Input Channels (36V Max)
Configurable IEC 61131-2 Type 1, 2, 3 Inputs
Configurable Input Current-Limiting From 0.5mA to
6mA
• Selectable 0, 25µs, 0.75ms, or 3ms Input
Debounce Filtering
• High-Speed, 2µs Update Rate
High Integration Reduces BOM Count and Board
Space
• Integrated 500V
RMS
Galvanic Isolation
• Integrated 5V LDO (MAX31953)
• Daisy-Chain Capability Eliminates Isolators
• 48-Pin TSSOP Package
• Integrated Overtemperature Monitor and Thermal
Shutdown
• Integrated Field-Supply Voltage Monitors
• 5-Bit CRC Code Generation and Transmission For
Error Detection
• ±15kV ESD HBM Immunity on IN1–IN8
• -40°C to +125°C Ambient Operating Temperature
Operates Directly From Field Supply in 12V and 24V
Systems
• Integrated Voltage Regulator Accepts 7V to 36V
• Option to Power Directly From a 5V Supply
SPI Interface Flexibility
• Compatible with 3.3V or 5V Logic
• Daisy-Chain Data From the Field-Side
Applications
Programmable Logic Controllers
Industrial Automation
Process Automation
Building Automation
Standard Compliance (Pending)
UL1577
Ordering Information
appears at end of data sheet.
19-7684; Rev 0; 7/15

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