• MAX7301ATL+ TQFN-40
MAX7301ATL+ TQFN-40

MAX7301ATL+

Interface - I/O Expanders 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander

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  • Part Number : MAX7301ATL+

  • Package/Case : TQFN-40

  • Brands : Analog Devices Inc./Maxim Integrated

  • Components Categories : I/O Expanders

  • Datesheet : MAX7301ATL+ DataSheet (PDF)

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Overview of MAX7301ATL+

The MAX7301ATL+ is a 2-Wire Interfaced,15-Port Controller with On-Chip Keyboard Scan IC that offers versatile control capabilities for interfacing with various input devices.It features a 2-wire serial interface for easy integration into digital systems, making it suitable for applications requiring keyboard scanning and GPIO control functionalities.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • SDA: Serial Data Line
  • SCL: Serial Clock Line
  • GND: Ground
  • ADDR: Address Input
  • INT0-INT7: Interrupt Outputs
  • DP2: Port 2 Data
  • DP3: Port 3 Data
  • DP4: Port 4 Data
  • DP5: Port 5 Data
  • DP6: Port 6 Data
  • DP7: Port 7 Data
  • DP8: Port 8 Data
  • DP9: Port 9 Data
  • DP0: Port 0 Data
  • DP1: Port 1 Data
  • VCC: Positive Power Supply


Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the MAX7301ATL+ IC for a visual representation.

Key Features

  • 2-Wire Serial Interface: The MAX7301ATL+ offers a simple 2-wire serial interface for easy communication with microcontrollers and other devices.
  • 15-Port Controller: With 15 ports for input/output control, this IC provides extensive capabilities for interfacing with external devices.
  • On-Chip Keyboard Scan: Includes on-chip keyboard scanning functionality, making it ideal for keyboard interfacing applications.
  • Interrupt Outputs: Features interrupt outputs for efficient event handling in digital systems.
  • Low Power Consumption: This IC is designed for low power consumption, suitable for portable and battery-powered applications.

Note: For detailed technical specifications, please refer to the MAX7301ATL+ datasheet.

Application

  • Keyboard Interface: Ideal for keyboard scanning applications in embedded systems and consumer electronics.
  • GPIO Control: Suitable for general-purpose input/output control in various electronic devices.
  • User Interface Devices: Used in devices requiring user input interfaces such as keypads and buttons.

Functionality

The MAX7301ATL+ is a versatile 15-port controller with on-chip keyboard scan functionality, providing a convenient solution for interfacing with input devices and controlling GPIOs in digital systems.

Usage Guide

  • Connection: Connect SDA (Serial Data Line) and SCL (Serial Clock Line) to the corresponding lines on the microcontroller for communication.
  • Power Supply: Apply the positive power supply (VCC) to power the IC within the specified voltage range.
  • Addressing: Set the address input (ADDR) for individual device identification in multi-device systems.

Frequently Asked Questions

Q: Can the MAX7301ATL+ handle multiple interrupt sources?
A: Yes, the MAX7301ATL+ offers 8 interrupt outputs for efficient handling of multiple interrupt sources.

Q: Is the MAX7301ATL+ suitable for battery-powered devices?
A: Yes, the low power consumption of the MAX7301ATL+ makes it suitable for battery-powered applications requiring versatile controller capabilities.

Equivalent

For similar functionalities, consider these alternatives to the MAX7301ATL+:

  • PCA9535PW: This is a similar 16-bit I2C-bus I/O port with interrupt and reset functionalities from Texas Instruments.
  • MCP23017-E/SP: An I2C I/O expander providing 16 bits of general-purpose parallel input/output expansion from Microchip Technology.

MAX7301ATL+

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Status Active Programmabe Not Verified
Number of I/O 28 Interface SPI
Interrupt Output With Interrupt Output Type Push Pull
Current - Output Source/Sink 4.5mA, 10mA Clock Frequency 26 MHz
Voltage - Supply 2.5V ~ 5.5V Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount Package / Case TQFN-40
Supplier Device Package 40-TQFN (6x6) Base Product Number MAX7301
Manufacturer Analog Devices Inc. Product Category Interface - I/O Expanders
RoHS Details Series MAX7301
Mounting Style SMD/SMT Interface Type Serial, SPI
Number of I/Os 28 I/O Supply Voltage - Min 2.5 V
Supply Voltage - Max 5.5 V Maximum Clock Frequency 26 MHz
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
ESD Protection Without ESD Protection Brand Analog Devices / Maxim Integrated
Input Voltage 600 mV to 2 V Logic Type I/O Expander
Operating Supply Voltage 2.5 V to 5.5 V Output Voltage 400 mV to 2 V
Pd - Power Dissipation 2.693 W Product I/O Expanders
Product Type I/O Expanders Propagation Delay Time 21 ns
Factory Pack Quantity 50 Subcategory Interface ICs
Type I/O Expander Part # Aliases MAX7301
Unit Weight 0.003175 oz Package Tube

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