MAX7312
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
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Features
- 400kbps I²C-Compatible Serial Interface
- 2V to 5.5V Operation
- 5V Overvoltage Tolerant I/Os
- Supports Hot Insertion
- 16 I/O Pins that Default to Inputs on Power-Up
- Open-Drain Interrupt Output (Active-Low INT)
- Bus Timeout for Lock-Up-Free Operation
- Noise Filter on SCL/SDA Inputs
- 64 User-Selectable Slave ID Addresses
- Low Standby Current (2.9µA typ)
- Polarity Inversion
- 4mm x 4mm, 0.8mm Thin QFN Package
- -40°C to +125°C Operation
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The MAX7312 2-wire-interfaced expander provides 16-bit parallel input/output (I/O) port expansion in SMBus™ and I²C applications. The MAX7312 consists of input port registers, output port registers, polarity inversion registers, configuration registers, a bus timeout register, and an I²C-compatible serial interface logic, compatible with SMBus. The system master can invert the MAX7312 input data by writing to the active-high polarity inversion register. The system master can enable or disable bus timeout by writing to the bus timeout register.
Any of the 16 I/O ports can be configured as an input or an output. A power-on reset (POR) initializes the 16 I/Os as inputs. Three address select pins configure the part to one of 64 slave ID addresses.
The MAX7312 supports hot insertion. All port pins, the active-low INT output, SDA, SCL, and the slave address inputs AD0-2 remain high impedance in power-down (Vt = 0V) up to 6V.
The MAX7312 is available in 24-pin SO, SSOP, TSSOP, and thin QFN packages and is specified over the -40°C to +125°C automotive temperature range.
For applications requiring I/Os with integrated 100kΩ pullup resistors, refer to the MAX7311 data sheet.
Applications
- Instrumentation and Test Measurement Networking
- Medical Equipment
- RAID Systems
- Servers/Blades
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
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Visit the ADI Support Page
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MAX7312
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Data Sheet
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MAX7312: 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection Data Sheet (Rev.3)
Reliability Data
1
156.02K
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Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
Technical Articles 2
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 |
|---|---|---|---|
| MAX7312AAG+ |
24-SSOP-5.3_MM
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| MAX7312AAG+T |
24-SSOP-5.3_MM
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| MAX7312ATG+ |
24-TQFN-4X4X0.75
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| MAX7312ATG+T |
24-TQFN-4X4X0.75
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| MAX7312AUG+ |
Thin Shrink Small-Outline Package
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| MAX7312AUG+T |
Thin Shrink Small-Outline Package
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| MAX7312AWG+ |
Small-Outline IC, Wide (0.3in)
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| MAX7312AWG+T |
Small-Outline IC, Wide (0.3in)
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- MAX7312AAG+
- Pin/Package Drawing
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24-SSOP-5.3_MM
- Documentation
-
HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- MAX7312AAG+T
- Pin/Package Drawing
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24-SSOP-5.3_MM
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312ATG+
- Pin/Package Drawing
-
24-TQFN-4X4X0.75
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312ATG+T
- Pin/Package Drawing
-
24-TQFN-4X4X0.75
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312AUG+
- Pin/Package Drawing
-
Thin Shrink Small-Outline Package
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312AUG+T
- Pin/Package Drawing
-
Thin Shrink Small-Outline Package
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312AWG+
- Pin/Package Drawing
-
Small-Outline IC, Wide (0.3in)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- MAX7312AWG+T
- Pin/Package Drawing
-
Small-Outline IC, Wide (0.3in)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Jan 9, 2015
- 1481
WAFER FAB
MAX7312AAG+
PRODUCTION
MAX7312AAG+T
PRODUCTION
MAX7312ATG+
PRODUCTION
MAX7312ATG+T
PRODUCTION
MAX7312AUG+
PRODUCTION
MAX7312AUG+T
PRODUCTION
MAX7312AWG+
PRODUCTION
MAX7312AWG+T
PRODUCTION
Jun 20, 2016
- 1612
ASSEMBLY
MAX7312ATG+
PRODUCTION
MAX7312ATG+T
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Jan 9, 2015
- 1481
WAFER FAB
MAX7312AAG+
PRODUCTION
MAX7312AAG+T
PRODUCTION
MAX7312ATG+
PRODUCTION
MAX7312ATG+T
PRODUCTION
MAX7312AUG+
PRODUCTION
MAX7312AUG+T
PRODUCTION
MAX7312AWG+
PRODUCTION
MAX7312AWG+T
PRODUCTION
Jun 20, 2016
- 1612
ASSEMBLY
Software & Part Ecosystem
Device Drivers
Looking for Evaluation Software? You can find it here
| Parts | Product Life Cycle | Description | ||
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Direct from Battery LED/GPIO Drivers9 |
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PRODUCTION |
16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
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PRODUCTION |
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection |
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PRODUCTION |
8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
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PRODUCTION |
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander |
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PRODUCTION |
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander |
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PRODUCTION |
2-Wire-Interfaced 8-Bit I/O Port Expander with Reset |
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PRODUCTION |
18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
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PRODUCTION |
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection |
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PRODUCTION |
2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection |
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Display Driver Electronics4 |
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PRODUCTION |
9-Output LED Driver with Intensity Control and Hot-Insertion Protection |
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PRODUCTION |
17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection |
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PRODUCTION |
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander |
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PRODUCTION |
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander |
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Product1 |
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10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection |
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Evaluation Kits 1
MAX7312EVKIT
Evaluation Kit for the MAX7312
Features and Benefits
- Windows 2000/XP/Vista (32-Bit)-Compatible Evaluation Software
- USB-PC Connection (Cable Included)
- USB Powered
- Configurable Input or Push-Pull Output
- Proven PCB Layout
- Fully Assembled and Tested
- Lead-Free and RoHS-Compliant
- On-Board Pushbutton Switches
- On-Board LEDs for Demonstrating the Push-Pull Capabilities of the GPIOs
Product Detail
The MAX7312 evaluation kit (EV kit) provides a proven design to evaluate the MAX7312 I²C-compatible 16-bit I/O port expander, with each port configurable as input or push-pull output. The EV kit also includes Windows 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX7312. The MAX7312 EV kit printed-circuit board (PCB) comes with a MAX7312ATG+ installed.
Applications
- Instrumentation and Test Measurement Networking
- Medical Equipment
- RAID Systems
- Servers/Blades
Evaluation Kits1
Tools & Simulations 1
Software Development 1
