DS4520
PRODUCTION9-Bit I²C Nonvolatile I/O Expander Plus Memory
9-Channel, Nonvolatile Port Expander Integrates User-EEPROM
- Part Models
- 2
- 1ku List Price
- Starting From $2.08
Part Details
- Programmable Replacement for Mechanical Jumpers and Switches
- Nine NV Input/Output Pins
- 64-Byte NV User Memory (EEPROM)
- I²C-Compatible Serial Interface
- Up to 8 Devices Can be Multidropped on the Same I²C Bus
- Open-Drain Outputs with Configurable Pullups
- Outputs Capable of Sinking 12mA
- Low Power Consumption
- Wide Operating Voltage (2.7V to 5.5V)
- Operating Temperature Range: -40°C to +85°C
The DS4520 is a 9-bit nonvolatile (NV) I/O expander with 64 bytes of NV user memory controlled by an I²C-compatible serial interface. The DS4520 offers users a digitally programmable alternative to hardware jumpers and mechanical switches that are being used to control digital logic nodes. Furthermore,the digital state of each pin can be read through the serial interface. Each I/O pin is independently configurable. The outputs are open drain with selectable pullups. Each output has the ability to sink up to 12mA. Since the device is NV, it powers up in the desired state allowing it to control digital logic inputs immediately on power-up without having to wait for the host CPU to initiate control.
Applications
- Network Storage
- PC Peripherals
- RAM-Based FPGA Bank Switching for Multiple Profiles
- Routers/Switches
- Selecting Between Boot Flash
- Servers
- Setting ASIC Configurations/Profiles
- Telecom Equipment
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS4520E+ | Thin Shrink Small-Outline Package | ||
| DS4520E+TRL | Thin Shrink Small-Outline Package |
This is the most up-to-date revision of the Data Sheet.
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