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Product Detailed Parameters
- Description：IC XPNDR 400KHZ I2C 16TQFN
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Number of I/O：4
- Interface：I2C
- Interrupt Output：Yes
- Features：POR
- Output Type：-
- Current - Output Source/Sink：20mA
- Clock Frequency：400 kHz
- Voltage - Supply：1.7V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-TQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The MAX7322ATE+ is an I2C port expander featuring four push-pull outputs and four input ports with selectable internal pullups. It operates within a supply voltage range of +1.71V to +5.5V and supports a serial clock frequency up to 400kHz. The device provides 20mA sink current capability for its outputs and includes overvoltage protection on inputs up to +6V. It utilizes two address inputs (AD0, AD2) to select from 16 slave addresses. The component is specified for operation across the -40°C to +125°C temperature range and is housed in a 16-pin TQFN package.
Feature Summary
- Four push-pull output ports rated at 20mA sink current
- Four input ports with maskable, latching transition detection
- Input ports are overvoltage protected to +6V
- Low standby current consumption
Applications
- Cell Phones
- SAN/NAS
- Servers
- Notebooks
- Satellite Radio
Procurement Notes
Verify that the ordering suffix 'ATE+' corresponds to the specific 16-pin TQFN-EP package variant. Confirm RoHS compliance status as indicated by the plus sign. Ensure the supplier documentation matches the Analog Devices/Maxim Integrated manufacturer designation for this part number.
Selection Notes
Select this component when a combination of four push-pull outputs and four inputs is required. Verify that the system requires latching transition detection for inputs. Ensure the application voltage falls within the 1.71V to 5.5V range. Consider the 16-address capability if multiple devices share the bus.
Part Context
The MAX7322 belongs to the MAX7319–MAX7329 family of pin-compatible port expanders. It serves as a general-purpose peripheral for systems needing additional I/O via a standard I2C interface. It complements other family members like the MAX7320 or MAX7323 which offer different port configurations.
Replacement Considerations
The MAX7326 is a software equivalent combining MAX7320 and MAX7322 functions but has 16 ports. Direct pin-compatible replacements within the same 8-port configuration are not explicitly listed as identical substitutes.
