MAX7325
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MAX7325

I2C Port Expander with 8 Push-Pull and 8 Open-Drain I/Os

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Low Operating Supply Voltage I2C Port Expander with 8 Push-Pull and 8 Configurable Open-Drain I/Os

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $1.34
Features
  • 400kHz I2C Serial Interface
  • +1.71V to +5.5V Operating Voltage
  • 8 Push-Pull Output Ports
  • 8 Open-Drain I/O Ports, Rated at 20mA Sink Current
  • I/O Ports are Overvoltage Protected to +6V
  • Selectable I/O Port Power-Up Default Logic States
  • Transient Changes are Latched, Allowing Detection Between Read Operations
  • Active-Low INT Output Alerts Changes on Inputs
  • AD0 and AD2 Inputs Select from 16 Slave Addresses
  • Low 0.6µA (typ) Standby Current
  • -40°C to +125°C Temperature Range
Additional Details
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The MAX7325 2-wire serial-interfaced peripheral features 16 I/O ports. Ports are divided into eight push-pull outputs and eight I/Os with selectable internal pullups and transition detection. Eight ports are push-pull outputs and eight I/Os may be used as a logic input or an open-drain output. Ports are overvoltage protected to +6V.

All I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the active-low INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7325 is subsequently accessed through the serial interface, any pending interrupt is cleared. The open-drain outputs are rated to sink 20mA, and are capable of driving LEDs. The active-low RST input clears the serial interface, terminating any I2C communication to or from the MAX7325.

The MAX7325 uses two address inputs with four-level logic to allow 16 I2C slave addresses. The slave address also determines the power-up logic state for the I/O ports, and enables or disables internal 40kΩ pullups in groups of four ports.

The MAX7325 is one device in a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and push-pull output ports (see Table 1 of the full data sheet).

The MAX7325 is available in 24-pin QSOP and TQFN packages and is specified over the -40°C to +125°C automotive temperature range.

Applications

  • Automotive
  • Cell Phones
  • Notebooks
  • SAN/NAS
  • Satellite Radio
  • Servers
Part Models 6
1ku List Price Starting From $1.34

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX7325AEG+
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MAX7325AEG+T
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MAX7325AEG/V+
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MAX7325AEG/V+T
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MAX7325ATG+
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MAX7325ATG+T
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Product Lifecycle

PCN

Jan 9, 2015

- 1481

WAFER FAB

MAX7325AEG+

PRODUCTION

MAX7325AEG+T

PRODUCTION

MAX7325ATG+

PRODUCTION

MAX7325ATG+T

PRODUCTION

Aug 6, 2015

- 1512_CANCELATION

WAFER FAB

MAX7325AEG/V+T

PRODUCTION

Feb 20, 2015

- 1508

WAFER FAB

MAX7325AEG/V+T

PRODUCTION

Jun 20, 2016

- 1612

ASSEMBLY

MAX7325ATG+

PRODUCTION

MAX7325ATG+T

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Jan 9, 2015

- 1481

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WAFER FAB

MAX7325AEG+

PRODUCTION

MAX7325AEG+T

PRODUCTION

MAX7325ATG+

PRODUCTION

MAX7325ATG+T

PRODUCTION

Aug 6, 2015

- 1512_CANCELATION

arrow down

WAFER FAB

MAX7325AEG/V+T

PRODUCTION

Feb 20, 2015

- 1508

arrow down

WAFER FAB

MAX7325AEG/V+T

PRODUCTION

Jun 20, 2016

- 1612

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ASSEMBLY

MAX7325ATG+

PRODUCTION

MAX7325ATG+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX7325EVCMAXQU

Evaluation Kit/Evaluation System for the MAX7325

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MAX7325EVCMAXQU

Evaluation Kit/Evaluation System for the MAX7325

Evaluation Kit/Evaluation System for the MAX7325

Features and Benefits

  • 400kHz, 2-Wire Serial Interface
  • 1.71V to 5.5V Operation
  • 8 Push-Pull Output Ports
  • 8 Open-Drain I/O Ports, Rated to 20mA Sink Current
  • Input Ports are Overvoltage Protected to 6V
  • Proven PCB Layout
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • Fully Assembled and Tested
  • EV System: USB PC Connection

Product Detail

The MAX7325 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that demonstrates the capabilities of the MAX7325 I²C port expander with eight push-pull outputs and eight open-drain I/Os. The MAX7325 EV kit also includes Windows 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX7325's features.

The MAX7325 evaluation system (EV system) includes a MAX7325 EV kit and a Maxim CMAXQUSB serial-interface board. The CMAXQUSB board connects to a PC's USB port and allows the transfer of I²C commands to the MAX7325 EV kit.

The EV kit comes with the MAX7325ATG+ installed.

Applications

  • Automotive
  • Cell Phones
  • Notebooks
  • SAN/NAS
  • Satellite Radio
  • Servers

MAX7325EVKIT

Evaluation Kit/Evaluation System for the MAX7325

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MAX7325EVKIT

Evaluation Kit/Evaluation System for the MAX7325

Evaluation Kit/Evaluation System for the MAX7325

Features and Benefits

  • 400kHz, 2-Wire Serial Interface
  • 1.71V to 5.5V Operation
  • 8 Push-Pull Output Ports
  • 8 Open-Drain I/O Ports, Rated to 20mA Sink Current
  • Input Ports are Overvoltage Protected to 6V
  • Proven PCB Layout
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • Fully Assembled and Tested
  • EV System: USB PC Connection

Product Detail

The MAX7325 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that demonstrates the capabilities of the MAX7325 I²C port expander with eight push-pull outputs and eight open-drain I/Os. The MAX7325 EV kit also includes Windows 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX7325's features.

The MAX7325 evaluation system (EV system) includes a MAX7325 EV kit and a Maxim CMAXQUSB serial-interface board. The CMAXQUSB board connects to a PC's USB port and allows the transfer of I²C commands to the MAX7325 EV kit.

The EV kit comes with the MAX7325ATG+ installed.

Applications

  • Automotive
  • Cell Phones
  • Notebooks
  • SAN/NAS
  • Satellite Radio
  • Servers

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