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High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

Ultra Robust, Configurable Driver facilitates High Speed and Safety Digital I/O module Designs

产品详情

The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 is specified for operation with supplies up to 40V. The high-side switch current is resistor settable from 135mA (min) to 1.3A (min). The high-side driver’s on-resistance is 120mΩ (typ) at 125°C ambient temperature. Optional push-pull operation allows driving of cables and fast discharge of load capacitance. The output voltage is monitored and indicated through the active-low DOI_LVL pin for safety applications.

The MAX14914 complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.

Design Solution: Finally – Digital IO Means Digital IO! ›

主要特征

  • Reduces Power and Heat Dissipation
    • 240mΩ (max) HS RON at TA = 125°C
    • Accurate Short-Circuit Current Limit
    • Accurate Internal Current Limiter for Types 1, Type 2, and Type 3 Digital Inputs
  • Enhances System Robustness
    • “Safe-Demagnetization” for Safe Turn-Off of Unlimited Inductance
    • 60V Supply Tolerance
    • Loss of GND Protection
    • Thermal Shutdown Protection
    • ±2kV IEC 61000-4-5 Surge Protection
    • ±20kV IEC 61000-4-2 Air-Gap ESD Protection
    • ±7kV IEC 61000-4-2 Contact ESD Protection
    • -40°C to +125°C Ambient Operating Temperature
  • Reduces BOM Count and PCB Space
    • Small 4x4 TQFN Package
    • Internal Clamps for Fast Inductive Load Turn-Off
    • On-Chip 5V Regulator
  • Provides Flexibility
    • Configurable as a Digital Input or a High-Side or Push-Pull Digital Output
    • Resistor Settable Current Limiting for the High-Side Switch (135mA - 1.3A)
    • 10V to 40V Operating Supply Range
  • Improves System Speed and Throughput
    • Propagation Delay of Less Than 2µSec

应用/用途

  • null
  • null
  • 电机控制
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Parametric specs for Digital I/O
Digital Input/Output Digital I/O
Interface Type CMOS
# Channels 1
VSUPPLY (V) (min) 10
VSUPPLY (V) (max) 40
ISUPPLY (µA) (typ) 0.6
Digital Input Type Type 1
Type 2
Type 3
Current Limit (A) (min) 0.135
Current Limit (A) (max) 2.6
Min. Detectable Field Input Pulse Width (µs) 0.8
Load Current (A) (max) 1.3
Oper. Temp. (°C) -40 to +125
Package/Pins TQFN/16
Budgetary
Price (See Notes)
$1.94 @1k
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简化框图

MAX14914: Functional Diagram MAX14914: Functional Diagram Zoom icon

技术文档

设计与质量

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描述

The MAX14914 evaluation kit (EV kit) provides a proven design to evaluate the MAX14914/MAX14914A/ MAX14914B, a configurable industrial digital output driver/digital input. The EV kit allows controlling of the MAX14914 as either a digital output (in either High-Side or Push-Pull mode) or digital input with simple jumper settings.

The EV kit must be powered from an external +24V power supply and can consume up to 1.3A (minimum) when fully loaded.

The MAX14914EVKIT comes with a MAX14914ATE+ installed in a 16-pin, 4x4mm TQFN-EP package.

MAX14914B overcurrent interrupt output is not directly supported. For the MAX14914B application refer to the MAX14914 IC data sheet.

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特征

  • Robust Operation with Wide Range of Input Voltages and Load Conditions
  • -40°C to +125°C Temperature Range
  • On-Board LED Indication of Status and Fault Conditions
  • Reverse Supply Voltage Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

描述

The MAX14914 peripheral module provides the hardware to evaluate the MAX14914 high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). Refer to the MAX14914 IC data sheet for detailed information regarding operation of the IC.

The module can be used in various ways; Maxim sells a low-cost USB2PMB1 adapter board that uses the Munich GUI software for communication through a USB cable. This is not included with this board. Alternatively, any microcontroller or FPGA with a 12-pin Pmod™-compatible connector can be used, but the user needs to adapt the signalling because this is not a standard SPI port. Another option for the user is to wire-wrap a temporary connection from their system to the pins on connector X1.

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特征

  • Easy Evaluation of the MAX14914
  • Configurable as a Digital Input or a High-Side or Push-Pull Digital Output
  • Accurate Internal Current Limiter for Types 1, 2, and 3 Digital Inputs
  • Support High-Side Current Up to 1.3A with External 24V Supply
  • Adjustable Short-Circuit Current Limit
  • Safe-Demagnetization for Safe Turn Off of Unlimited Inductance
  • Works with USB2PMB1 Adapter and Munich GUI Software
  • Fully Assembled and Tested
  • Proven PCB Layout
  • RoHS Compliant

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参量

Parametric specs for Digital I/O
Digital Input/Output Digital I/O
Interface Type CMOS
# Channels 1
VSUPPLY (V) (min) 10
VSUPPLY (V) (max) 40
ISUPPLY (µA) (typ) 0.6
Digital Input Type Type 1
Type 2
Type 3
Current Limit (A) (min) 0.135
Current Limit (A) (max) 2.6
Min. Detectable Field Input Pulse Width (µs) 0.8
Load Current (A) (max) 1.3
Oper. Temp. (°C) -40 to +125
Package/Pins TQFN/16
Budgetary
Price (See Notes)
$1.94 @1k

主要特征

  • Reduces Power and Heat Dissipation
    • 240mΩ (max) HS RON at TA = 125°C
    • Accurate Short-Circuit Current Limit
    • Accurate Internal Current Limiter for Types 1, Type 2, and Type 3 Digital Inputs
  • Enhances System Robustness
    • “Safe-Demagnetization” for Safe Turn-Off of Unlimited Inductance
    • 60V Supply Tolerance
    • Loss of GND Protection
    • Thermal Shutdown Protection
    • ±2kV IEC 61000-4-5 Surge Protection
    • ±20kV IEC 61000-4-2 Air-Gap ESD Protection
    • ±7kV IEC 61000-4-2 Contact ESD Protection
    • -40°C to +125°C Ambient Operating Temperature
  • Reduces BOM Count and PCB Space
    • Small 4x4 TQFN Package
    • Internal Clamps for Fast Inductive Load Turn-Off
    • On-Chip 5V Regulator
  • Provides Flexibility
    • Configurable as a Digital Input or a High-Side or Push-Pull Digital Output
    • Resistor Settable Current Limiting for the High-Side Switch (135mA - 1.3A)
    • 10V to 40V Operating Supply Range
  • Improves System Speed and Throughput
    • Propagation Delay of Less Than 2µSec

应用/用途

  • null
  • null
  • 电机控制
  • null

描述

The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 is specified for operation with supplies up to 40V. The high-side switch current is resistor settable from 135mA (min) to 1.3A (min). The high-side driver’s on-resistance is 120mΩ (typ) at 125°C ambient temperature. Optional push-pull operation allows driving of cables and fast discharge of load capacitance. The output voltage is monitored and indicated through the active-low DOI_LVL pin for safety applications.

The MAX14914 complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.

Design Solution: Finally – Digital IO Means Digital IO! ›

简化框图

MAX14914: Functional Diagram MAX14914: Functional Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心