DS4520E+TRL

Overview

The DS4520E+TRL is a 9-bit nonvolatile I/O expander with 64 bytes of NV user memory controlled by an I2C-compatible serial interface. It operates within a supply voltage range of 2.7V to 5.5V and supports SCL clock frequencies up to 400 kHz. The device features open-drain outputs capable of sinking 12mA, with selectable internal pullup resistors ranging from 4.0kΩ to 7.5kΩ. Standby current is typically 10µA. It is housed in a 16-pin TSSOP package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Digitally programmable replacement for hardware jumpers and mechanical switches
• Nonvolatile power-up state allows immediate control of digital logic inputs without host CPU initialization
• SRAM shadowed EEPROM registers reduce write time and extend EEPROM endurance

Applications

• RAM-Based FPGA Bank Switching for Multiple Profiles
• Selecting Between Boot Flash
• Setting ASIC Configurations/Profiles
• Servers and Network Storage
• Routers and Telecom Equipment

Procurement Notes

Verify the specific ordering suffix 'TRL' corresponds to tape and reel packaging requirements for automated assembly lines. Confirm that the component meets RoHS standards as indicated by the '+' designation. Ensure the selected part number matches the required operating temperature range and package type for your design specifications before finalizing procurement.

Selection Notes

Select this component when a digitally programmable alternative to mechanical switches is required for controlling digital logic nodes. It is suitable for applications needing nonvolatile configuration states upon power-up. Consider the 12mA sink capability and open-drain output structure when designing external circuitry. Verify compatibility with the system's I2C bus speed and address pin configurations.

Part Context

The DS4520E+ belongs to the DS4520 series of 9-bit I2C nonvolatile I/O expanders manufactured by Analog Devices Inc./Maxim Integrated. This series provides integrated nonvolatile memory alongside I/O expansion capabilities. The 'E+' suffix indicates compliance with environmental standards, while 'TRL' specifies the tape and reel packaging format for high-volume manufacturing.

Replacement Considerations

DS4520E+