MAX7327
PRODUCTIONI²C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os
- Part Models
- 2
- 1ku List Price
- Starting From $2.29
Part Details
- 400kHz I²C Serial Interface
- +1.71V to +5.5V Operating Voltage
- 12 Push-Pull Output Ports, Rated at 20mA Sink Current
- 4 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
The MAX7327, a 2-wire serial-interfaced peripheral, features 12 push-pull outputs and four configurable open-drain I/O ports with selectable internal pullups and transition detection. Ports are overvoltage protected to +6V, independent of 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, +6V-tolerant active-low INT output. The interrupt is latched, detecting transient changes. When the MAX7327 is subsequently accessed through the serial interface, any pending interrupt is cleared. The 12 push-pull and the 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 MAX7327.
The MAX7327 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 two ports.
The MAX7327 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 MAX7327 is available in the 24-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
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 |
|---|---|---|---|
| MAX7327AATG+ | 24-LFCSP-3.5X3.5X0.75 | ||
| MAX7327AATG+T | 24-LFCSP-3.5X3.5X0.75 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 9, 2015 - 1481 WAFER FAB |
||
| MAX7327AATG+ | 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 7 | ||
| 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 |
| MAX7322 | PRODUCTION | I²C Port Expander with 4 Push-Pull Outputs and 4 Inputs |
| 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
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