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Product Detailed Parameters
- Description：IC XPND 400KHZ I2C SMBUS 24TSSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Number of I/O：16
- Interface：I2C, SMBus
- Interrupt Output：Yes
- Features：POR
- Output Type：Push-Pull
- Current - Output Source/Sink：31mA, 43mA
- Clock Frequency：400 kHz
- Voltage - Supply：2V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：24-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：24-TSSOP
- Grade：-
- Qualification：-
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Overview
The MAX7312AUG+ is a 2-wire-interfaced 16-bit I/O port expander in a 24-pin TSSOP package. It operates from a supply voltage of 2V to 5.5V with a maximum clock frequency of 400 kHz. The device provides 16 configurable I/O pins that default to inputs on power-up, featuring an open-drain interrupt output and bus timeout for lock-up-free operation. Standby current is typically 2.9µA at 3.3V. It supports hot insertion with high-impedance states up to 6V when powered down. Operating temperature range is -40°C to +125°C.
Feature Summary
- Supports hot insertion with high-impedance protection up to 6V during power-down
- Includes bus timeout feature to prevent serial bus lock-ups
- Provides polarity inversion capability for input data
Applications
- Servers and blades
- RAID systems
- Medical equipment
- Instrumentation and test measurement
- Networking hardware
Procurement Notes
Verify the suffix AUG corresponds to the 24-pin TSSOP package variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering code matches the specific temperature grade and packaging requirements for your production line.
Selection Notes
Select this component when 16 general-purpose I/O expansion via I2C/SMBus is required. It is suitable for applications needing hot-swap capabilities and low standby current. Consider alternative packages like SOIC or QFN if footprint constraints differ. Verify address pin configurations to ensure unique slave IDs in multi-device systems.
Part Context
The MAX7312 belongs to Maxim Integrated's family of 2-wire-interfaced I/O expanders. It offers 16 bits of parallel I/O expansion compatible with SMBus and I2C protocols. The device integrates configuration registers, polarity inversion, and bus timeout features for robust system operation in industrial and commercial environments.
Replacement Considerations
MAX7312AWG (Wide SOIC), MAX7312AAG (SSOP), MAX7312ATG (Thin QFN). These variants share identical electrical specifications and functionality but differ in physical package dimensions.
