ADI ADM3493ARZ-REEL7

The ADM3493 is a low power, differential line transceiver designed to operate using a single 3.3V power supply. Low power consumption, coupled with a shutdown mode, makes it ideal for power-sensitive applications. The ADM3493 is suitable for communication on multipoint bus transmission lines. The device contains one driver and one receiver. Designed for half-duplex communication, the ADM3493 features a slew rate limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps. The receiver input impedance is 96 kΩ, allowing up to 256 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions then the thermal shutdown circuit forces the driver output into a high impedance state. The receiver contains a failsafe feature that results in a logic high output state, if the inputs are unconnected (floating). The ADM3493 is fully specified over the commercial and industrial temperature ranges and is available in an 8-lead SOIC.

• Operates with 3.3 V supply
• Interoperable with 5 V logic
• EIA RS - 422 and RS - 485 compliant over full CM range
• Data rate: 250 kbps
• Half duplex transceiver
• Reduced slew rates for low EMI
• 2 nA supply current in shutdown mode
• Up to 256 transceivers on a bus
• -7 V to +12 V bus common-mode range
• Specified over -40°C to -85°C temperature range
• 8 ns skew
• Available in 8-lead SOIC

• Low power RS - 485 applications
• EMI sensitive systems
• DTE - DCE interfaces
• Industrial control
• Packet switching
• Local area networks
• Level translators