Datasheet > MAX31911_12

MAX31911_12

更新时间： 2024-11-04 12:23:19

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
15页	2108K
描述
Industrial, Octal, Digital Input Translator/Serializer

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MAX31911_12 数据手册

EVALUATION KIT AVAILABLE

MAX31911

Industrial, Octal, Digital Input

Translator/Serializer

General Description

Features

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 cir-

cuit 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 filter-

ing 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.

S Eight High-Voltage Input Channels (36V max)

S Configurable for IEC 61131-2 Input Types 1, 2, 3

S Wide Operating Supply Range of 7V to 36V

S Optional Configuration Allows 5V Supply

S Selectable Input Filtering and Debouncing from

0ms to 3ms

S Configurable Input Current Limiting from 0.5mA

to 6mA

S High HBM ESD Immunity on All Field Input Pins

S On-Chip 8-to-1 Serialization with SPI Interface

S On-Chip 5V Regulator

S Overtemperature Indicator

S On-Chip 24V Field Supply Voltage Monitor

S Low Quiescent Current and Power Dissipation

S Multibit CRC Code Generation and

Transmission for Error Detection and More

Reliable Data Transmission to an External Micro

Applications

Digital Input Modules for PLCs

Industrial, Building, and Process Automation

Motor Control

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 pos-

sible by input current limiting alone.

Block Diagram

The future generation version of the MAX31910 and

MAX31911 will include energy-less LED drivers while

maintaining pin compatibility.

24V

5VOUT

5V REGULATOR

CC24V

MAX31911

VREF

SUPPLY

MONITOR

FAULTB

Ordering Information appears at end of data sheet.

TEMP

MONITOR

DB0

DB1

RIREF

RT0

CRC GEN.

CURRENT

LIMITER

IN0

µCONTROLLER

ISOLATION

SENSORS

SIN

FILTER

MODESEL

CLK

VOLTAGE

COMPARATOR

VREF

SERIALIZER

INPUT CHANNEL 0

INPUT CHANNEL 7

RT7

IN7

SOUT

GND

For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX31911.related.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

19-6441; Rev 1; 9/12

12 3 4 5 6 7...15

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与MAX31911_12相关器件

型号	品牌	获取价格	描述	数据表
MAX31911_13	MAXIM	获取价格	Industrial, Octal, Digital Input Translator/Serializer
MAX31911AUI+T	MAXIM	获取价格	Interface Circuit, PDSO28, TSSOP-28
MAX31912	ADI	获取价格	八通道、工业数字输入电平转换器/串行器
MAX31913	MAXIM	获取价格	Industrial, Octal, Digital Input Translator/Serializer
MAX31913	ADI	获取价格	八通道、工业数字输入电平转换器/串行器
MAX31914	ADI	获取价格	超低功耗、八通道、工业数字输入电平转换器
MAX31915	ADI	获取价格	八通道、工业数字输入电平转换器
MAX31915AUI+	MAXIM	获取价格	Interface Circuit, BICMOS, PDSO38, ROHS COMPLIANT, TSSOP-38
MAX31953	MAXIM	获取价格	Fully Assembled and Tested
MAX31953EVKIT	MAXIM	获取价格	Fully Assembled and Tested

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