MAX14914A
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
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The MAX14914, MAX14914A and MAX14914B are the family of high-side/push-pull drivers that operate as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 family features full IEC 61131-2 compliance in both their DO and DI modes of operation. 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 DOI_LVL pin for safety applications.
The MAX14914 family complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.
The MAX14914A is a low-DOI-leakage version of MAX14914, designed to work together with the MAX22000 Industrial Configurable Analog IO device. The MAX14914B features a high-side switch overcurrent indication.
Key Features
- Reduces Power and Heat Dissipation
- 240mΩ (max) HS RON at TA = 125°C
- 0.9mA (typ) High-Side DO-Mode Supply Current
- Accurate Internal Current Limiter for Type 1, Type 2, and Type 3 Digital Inputs
- Enhances System Robustness
- SafeDemag™ for Safe Turn-Off of Unlimited Inductance
- 60V Supply Tolerance
- Accurate Short-Circuit DO Mode Current Limiting
- ±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 4mm x 4mm TQFN Package
- Internal Clamp 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
- Low-Leakage Mode (MAX14914A) Allows High Accuracy AIO/DIO applications
- Resistor Settable Current Limiting for the High-Side Switch (135mA to 1.3A)
- Pin-Selectable Type 1/3 or Type 2 DI Operation
- Improves System Speed and Throughput
- Propagation Delay of Less Than 2µs
Applications/Uses
- Configurable Digital Input/Output
- Industrial Digital Outputs and Inputs Modules
- Motor Control
- Safety Systems
Technical Docs
Click any title below to view the detail page where available.
Design Solution: Finally – Digital IO Means Digital IO! ›
How to Safely Demagnetize Your Inductive Load Using SafeDemag™Description
The MAX14914 evaluation kit (EV kit) provides a proven design to evaluate the MAX14914, 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.
View DetailsFeatures
- 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
Description
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.
View DetailsFeatures
- 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
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
| 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 |
Key Features
- Reduces Power and Heat Dissipation
- 240mΩ (max) HS RON at TA = 125°C
- 0.9mA (typ) High-Side DO-Mode Supply Current
- Accurate Internal Current Limiter for Type 1, Type 2, and Type 3 Digital Inputs
- Enhances System Robustness
- SafeDemag™ for Safe Turn-Off of Unlimited Inductance
- 60V Supply Tolerance
- Accurate Short-Circuit DO Mode Current Limiting
- ±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 4mm x 4mm TQFN Package
- Internal Clamp 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
- Low-Leakage Mode (MAX14914A) Allows High Accuracy AIO/DIO applications
- Resistor Settable Current Limiting for the High-Side Switch (135mA to 1.3A)
- Pin-Selectable Type 1/3 or Type 2 DI Operation
- Improves System Speed and Throughput
- Propagation Delay of Less Than 2µs
Applications/Uses
- Configurable Digital Input/Output
- Industrial Digital Outputs and Inputs Modules
- Motor Control
- Safety Systems
Description
The MAX14914, MAX14914A and MAX14914B are the family of high-side/push-pull drivers that operate as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 family features full IEC 61131-2 compliance in both their DO and DI modes of operation. 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 DOI_LVL pin for safety applications.
The MAX14914 family complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.
The MAX14914A is a low-DOI-leakage version of MAX14914, designed to work together with the MAX22000 Industrial Configurable Analog IO device. The MAX14914B features a high-side switch overcurrent indication.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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