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The DS2406 Dual Addressable Switch Plus Memory offers a simple way to remotely control a pair of open drain transistors and to monitor the logic level at each transistor¡¯s output via the 1-Wire bus for closed loop control. Each DS2406 has its own 64-bit ROM registration number that is factory lasered into the chip to provide a guaranteed unique identity for absolute traceability. The device¡¯s 1024 bits of EPROM can be used as electronic label to store information such as switch function, physical location, and installation date. Communication with the DS2406 follows the standard Dallas Semiconductor 1-Wire protocol and can be accomplished with minimal hardware such as a single port pin of a microcontroller. Multiple DS2406 devices can reside on a common 1-Wire network and be operated independently of each other.

FEATURES

Open drain PIO pins are controlled and their logic level can be determined over 1-Wire? bus for closed-loop control

Replaces and is fully compatible with DS2407 but no user-programmable power-on settings and no Hidden Mode.

PIO channel A sink capability of 50 mA at 0.4V with soft turn-on; channel B 8 mA at 0.4V

Maximum operating voltage of 13V at PIO A, 6.5V at PIO-B

1024 bits user-programmable OTP EPROM

User-programmable status memory to control the device

Multiple DS2406¡¯s can be identified on a common 1-Wire bus and be turned on or off independently of other devices on the bus

Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures error-free selection and absolute identity because no two parts are alike

On-chip CRC16 generator allows detection of data transfer errors

Built-in multidrop controller ensures compatibility with other 1-Wire net products

Reduces control, address, data, programming and power to a single data pin

Directly connects to a single port pin of a microprocessor and communicates at up to 16.3k bits/s

Supports Conditional Search with user selectable condition

Vcc bondout for optional external supply to the device (TSOC package only)

1-Wire communication operates over a wide voltage range of 2.8V to 6.0V from -40¡ãC to +85¡ãC

Low cost TO-92 or 6-pin TSOC surface mount package