MAX7323
PRODUCTIONI²C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os
Low Operating Supply Voltage I²C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os
- Part Models
- 4
- 1ku List Price
- Starting From $2.12
Part Details
- 400kHz I²C Serial Interface
- +1.71V to +5.5V Operating Voltage
- 4 Push-Pull Output Ports Rated at 20mA Sink Current
- 4 Open-Drain I/O Ports Rated to 20mA Sink Current
- 4 I/O Ports Are Overvoltage Protected to +6V
- Transient Changes Are Latched, Allowing Detection Between Read Operations
- Active-Low INT Output Alerts Change on 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 MAX7323 2-wire serial-interfaced peripheral features eight I/O ports. Four ports are push-pull outputs and the other four are open-drain I/O ports that are overvoltage protected up to +6V independent of the supply voltage.
The four I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the open-drain active-low INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7323 is subsequently accessed through the serial interface, any pending interrupt is cleared.
The four push-pull and four 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 MAX7323.
The MAX7323 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 for the input ports in groups of two ports.
The MAX7323 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 MAX7323 is available in 16-pin QSOP and 16-pin TQFN packages, and is specified over the automotive temperature range (-40°C to +125°C).
Applications
- Cell Phones
- Notebooks
- RAID
- SAN/NAS
- Servers
Documentation
Data Sheet 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 |
|---|---|---|---|
| MAX7323AEE+ | 16-QSOP-150_MIL | ||
| MAX7323AEE+T | 16-QSOP-150_MIL | ||
| MAX7323ATE+ | Thin Quad Flatpack, No Leads | ||
| MAX7323ATE+T | Thin Quad Flatpack, No Leads |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 9, 2015 - 1481 WAFER FAB |
||
| MAX7323AEE+ | PRODUCTION | |
| MAX7323AEE+T | PRODUCTION | |
| MAX7323ATE+ | PRODUCTION | |
| MAX7323ATE+T | PRODUCTION | |
|
Apr 9, 2018 - 1682 ASSEMBLY |
||
| MAX7323ATE+ | PRODUCTION | |
| MAX7323ATE+T | PRODUCTION | |
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| MAX7323ATE+ | PRODUCTION | |
| MAX7323ATE+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Direct from Battery LED/GPIO Drivers 6 | ||
| MAX7329 | PRODUCTION | I²C Port Expanders with Eight I/O Ports |
| MAX7328 | PRODUCTION | I²C Port Expanders with Eight I/O Ports |
| MAX7322 | PRODUCTION | I²C Port Expander with 4 Push-Pull Outputs and 4 Inputs |
| MAX7321 | PRODUCTION | I2C Port Expander with 8 Open-Drain I/Os |
| MAX7320 | PRODUCTION | I²C Port Expander with Eight Push-Pull Outputs |
| MAX7319 | PRODUCTION | I²C Port Expander with Eight Inputs and Maskable Transition Detection |
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