MAX7322
PRODUCTIONI²C Port Expander with 4 Push-Pull Outputs and 4 Inputs
Low Operating Supply Voltage I²C Port Expander with 4 Push-Pull Outputs and 4 Input Ports
- Part Models
- 4
- 1ku List Price
- Starting From $2.20
Part Details
- 400kHz I²C Serial Interface
- +1.71V to +5.5V Operation Voltage
- 4 Push-Pull Output Ports Rated at 20mA Sink Current
- 4 Input Ports with Maskable, Latching Transition Detection
- Input Ports are Overvoltage Protected to +6V
- Transient Changes are Latched, Allowing Detection Between Read Operations
- Active-Low INT Output Alerts Change on Any Selection of Inputs
- AD0 and AD2 Inputs Select from 16 Slave Addresses
- Low 0.6µA (typ) Standby Current
- -40°C to +125°C Operating Temperature Range
The MAX7322 2-wire serial-interfaced peripheral features four push-pull outputs and four input ports with selectable internal pullups. Input ports are overvoltage protected to +6V and feature transition detection with interrupt output.
The four input ports are continuously monitored for state changes (transition detection). The interrupt is latched, allowing detection of transient changes. Any combination of inputs can be selected using the interrupt mask to assert the open-drain active-low INT output. When the MAX7322 is subsequently accessed through the serial interface, any pending interrupt is cleared.
The four push-pull 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 MAX7322.
The MAX7322 uses two address inputs with four-level logic to allow 16 I²C slave addresses. The slave address also sets the power-up default logic state for the four output ports, and enables or disables internal 40kΩ pullups for the input ports.
The MAX7322 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 in the full data sheet).
The MAX7322 is available in 16-pin QSOP and TQFN packages, and is specified over the -40°C to +125°C automotive temperature range.
Applications
- Cell Phones
- Notebooks
- SAN/NAS
- Satellite Radio
- Servers
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX7322AEE+ | 16-QSOP-150_MIL | ||
| MAX7322AEE+T | 16-QSOP-150_MIL | ||
| MAX7322ATE+ | Thin Quad Flatpack, No Leads | ||
| MAX7322ATE+T | Thin Quad Flatpack, No Leads |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 24, 2019 - 1746N ASSEMBLY |
||
| MAX7322AEE+ | PRODUCTION | |
| MAX7322AEE+T | PRODUCTION | |
|
Jan 9, 2015 - 1481 WAFER FAB |
||
| MAX7322AEE+ | PRODUCTION | |
| MAX7322ATE+ | PRODUCTION | |
| MAX7322ATE+T | PRODUCTION | |
|
Apr 9, 2018 - 1682 ASSEMBLY |
||
| MAX7322ATE+ | PRODUCTION | |
| MAX7322ATE+T | PRODUCTION | |
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| MAX7322ATE+ | PRODUCTION | |
| MAX7322ATE+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Direct from Battery LED/GPIO Drivers 9 | ||
| MAX7327 | PRODUCTION | I²C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os |
| MAX7326 | PRODUCTION | I²C Port Expander with 12 Push-Pull Outputs and Four Inputs |
| MAX7324 | PRODUCTION | I²C Port Expander with Eight Push-Pull Outputs and Eight Inputs |
| MAX7319 | PRODUCTION | I²C Port Expander with Eight Inputs and Maskable Transition Detection |
| MAX7320 | PRODUCTION | I²C Port Expander with Eight Push-Pull Outputs |
| MAX7321 | PRODUCTION | I2C Port Expander with 8 Open-Drain I/Os |
| MAX7323 | PRODUCTION | I²C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os |
| MAX7328 | PRODUCTION | I²C Port Expanders with Eight I/O Ports |
| MAX7329 | PRODUCTION | I²C Port Expanders with Eight I/O Ports |
Tools & Simulations
Software Development 1
Evaluation Kits
MAX7322 Evaluation Kit/Evaluation System
MAX7322 Evaluation Kit/Evaluation System
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