Maxim Integrated MAX319x3 Octal Industrial Digital Input
Maxim Integrated MAX319x3 Octal Industrial Digital Input 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 500VRMS 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 (like 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.
Features
Reduced Power and Heat Dissipation
Accurate Input-Current Limiters
Energyless Field-Side LED Drivers
Integrated Buck Regulator (MAX31963)
High Integration Reduces BOM Count and Board Space
Integrated 500VRMS 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-Sid
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
The MAX31953/MAX31963 evaluation kit (EV kit) provides the hardware and software (graphical user interface) necessary to evaluate these industrial octal digital input translators/serializers. The EV kit includes a MAX31953/MAX31963AUI+ installed and a USB-to-SPI interface. The USB-to-SPI dongle is a separate PCB that can be used to interact with the EV kit software. This dongle is optional and is not necessary for the proper operation of the MAX31953/MAX31963 if the user supplies the SPI interface.
Features
Easy Evaluation of the MAX31953/MAX31963
Fully Assembled and Tested
USB HID Interface
Digital Isolator
Windows XP® OS- and Windows® 7 OS-Compatible Software
RoHS Compliant
Evaluation Kit Contents
Assembled circuit board including MAX31953/ MAX31963AUI+
India