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Product Detailed Parameters
- Description：IC XPNDR 400KHZ I2C 16QSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Number of I/O：8 (Input Only)
- Interface：I2C
- Interrupt Output：Yes
- Features：POR
- Output Type：-
- Current - Output Source/Sink：25mA
- Clock Frequency：400 kHz
- Voltage - Supply：1.71V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-QSOP
- Grade：-
- Qualification：-
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Overview
The MAX7319AEE+ is an I2C port expander featuring eight input ports with selectable internal pullups and overvoltage protection to +6V. It supports transition detection with a latching interrupt output, allowing the detection of transient changes. The device operates from a supply voltage ranging from +1.71V to +5.5V and includes a low standby current of 0.6µA typical. It utilizes a 400kHz I2C serial interface and offers 16 slave address options via AD0 and AD2 inputs. The component is specified for operation in the automotive temperature range of -40°C to +125°C.
Feature Summary
- Eight input ports with maskable, latching transition detection
- +1.71V to +5.5V operating voltage range
- Input ports are overvoltage protected to +6V
- INT output alerts change on any selection of inputs
Applications
- Cell Phones
- SAN/NAS
- Servers
- Notebooks
- Satellite Radio
Procurement Notes
Verify the specific package type QSOP-16 and ensure compatibility with the required I2C bus speed. Confirm that the system design accommodates the +6V tolerance on input pins. Check for availability as the component may be subject to lifecycle changes or limited stock situations depending on the distributor.
Selection Notes
Select this component when eight digital inputs with hardware transition detection are required. Ensure the application voltage falls within the 1.71V to 5.5V range. Consider the 16 available slave addresses if multiple devices share the same I2C bus. Verify that the interrupt masking features align with the system's event handling requirements.
Part Context
The MAX7319 is part of a family of pin-compatible port expanders from Analog Devices/Maxim Integrated. It serves as an input-only version within this series, distinct from variants offering open-drain or push-pull outputs. The AEE+ suffix indicates a lead-free/RoHS-compliant package in the 16-pin QSOP format.
Replacement Considerations
The MAX7328 and MAX7329 are noted as second sources to PCF8574 and PCF8574A respectively, but these are not direct functional replacements for the MAX7319 due to differences in transition detection capabilities.
