MAX7320ATE+T

Overview

The MAX7320ATE+T is an I2C serial-interfaced peripheral featuring eight push-pull output ports with selectable power-up logic states. It operates from a supply voltage range of +1.71V to +5.5V and supports hot insertion with overvoltage-tolerant inputs up to +6V. The device utilizes two address inputs (AD0, AD2) to configure one of 16 slave addresses. It includes a reset input (RST) to clear the serial interface and terminates ongoing transactions. Typical standby current is 0.6μA, while running supply current reaches 55μA at 400kHz. The component is specified for operation between -40°C and +125°C.

Feature Summary

• Eight push-pull output ports with configurable power-up default states
• I2C-compatible serial interface supporting up to 400kHz clock frequency
• Hot insertion capability with overvoltage-tolerant control pins
• Low standby current consumption in idle mode

Applications

• Cell Phones/PDAs
• Satellite Radios
• Notebooks
• RAID Systems
• Servers

Procurement Notes

Verify the specific package variant required, as the MAX7320 family is available in both 16-pin QSOP and 16-pin TQFN configurations. Confirm that the selected part number matches the intended thermal and mechanical constraints of the target PCB design. Ensure compatibility with the system's I2C bus voltage levels before finalizing procurement.

Selection Notes

Select this component when eight push-pull outputs are required without interrupt capabilities. Verify that the application does not require open-drain or input-only port configurations, which are available in other members of the MAX7319–MAX7329 family. Ensure the system can accommodate the specific I2C address range assigned to the MAX7320 series.

Part Context

The MAX7320 belongs to the MAX7319–MAX7329 family of pin-compatible port expanders. Unlike other family members that offer open-drain I/O or input ports, the MAX7320 provides exclusively push-pull outputs. It shares physical pinouts with devices like the MAX7315 and MAX6965 but differs in software register mapping and electrical characteristics.

Replacement Considerations

The datasheet identifies the PCF8574 and PCF8574A as second sources within the broader family context, though these correspond to different port types (open-drain). Direct functional replacement requires verifying software compatibility and ensuring the alternative device supports the required push-pull output configuration.