DS28E17Q+T

Controllers Overview

The DS28E17Q+T is a 1-Wire to I²C controller bridge device manufactured by Analog Devices Inc./Maxim Integrated. It interfaces directly to I²C peripherals at standard (100kHz) or fast (400kHz) speeds via the single-line 1-Wire protocol. The device features a unique factory-programmed 64-bit ROM ID for network addressing and supports flexible operational modes including packetized data payloads at 15kbps and 77kbps. Electrical specifications include a supply voltage range of 2.45V to 3.6V, typical sleep mode current of 0.3µA, and typical operational current of 2.6mA. It operates within a temperature range of -40°C to +85°C and is housed in a small TQFN package.

Controllers Feature Summary

• Converts 1-Wire communication protocol to I²C controller I/O, enabling operation of I²C peripherals over a single-contact interface.
• Extends I²C communication distance using the 1-Wire protocol with support for standard and overdrive speeds.
• Includes a unique 64-bit unalterable serial number for node addressing in multidrop networks.
• Provides low power consumption with dedicated sleep and wakeup pins for flexible power management.

Controllers Applications

• Accessory identification and control
• I²C sensor integration
• Display controller interfacing
• ADC/DAC peripheral access

Controllers Procurement Notes

Verify the specific suffix 'Q' against official documentation to confirm it denotes qualified automotive or industrial grade status, as ordering suffixes can indicate variations in reliability standards or environmental compliance. Confirm the '+T' indicates tape and reel packaging if required for automated assembly. Ensure compatibility with the host system's 1-Wire master capabilities before procurement.

Controllers Selection Notes

Select this component when bridging 1-Wire masters to I²C slaves is required without complex logic. Consider the 2.45V to 3.6V supply range and TQFN package size for space-constrained designs. Evaluate the need for overdrive speed support (77kbps) versus standard speed (15kbps) based on network latency requirements. Verify that the target I²C devices are compatible with the bridge's controller functionality.

Controllers Part Context

The DS28E17 belongs to the family of 1-Wire to I²C bridge controllers designed to simplify network architecture. Unlike memory devices such as the DS28E07 or security ICs like the DS28E38, this part functions primarily as a protocol translator. It allows legacy or specialized I²C components to be accessed via the simpler 1-Wire bus, reducing pin count and wiring complexity in embedded systems.

Controllers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacements should be sought from Analog Devices/Maxim Integrated product lines offering similar 1-Wire to I²C bridging functionality with compatible pinouts and electrical characteristics.