SP485ES Electronic IC Chips Low Power Half-Duplex RS-485 Transceivers

SP481/SP483/SP485

Low Power Half-Duplex RS-485 Transceivers

■ +5V Only

■ Low Power BiCMOS

■ Driver/Receiver Enable

■ Slew Rate Limited Driver for Low EMI (SP483)

■ Low Power Shutdown Mode (SP481 and SP483)

■ RS-485 and RS-422 Drivers/Receivers

DESCRIPTION

The SP481, SP483, and the SP485 are a family of half-duplex transceivers that meet the requirements of RS-485 and RS-422. Their BiCMOS design allows low power operation without sacrificing performance. The SP481 and SP485 meet the requirements of RS-485 and RS-422 up to 5Mbps. Additionally, the SP481 is equipped with a low power Shutdown mode. The SP483 is internally slew rate limited to reduce EMI and can meet the requirements of RS-485 and RS-422 up to 250kbps. The SP483 is also equipped with a low power Shutdown mode.

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

V_CC............................................................................................................±12V

Input Voltages

      Logic........................................................-0.3V to (V_CC+0.5V)

      Drivers..................................................-0.3V to (V_CC+0.5V)

      Receivers................................................................. ±15V

Output Voltages

      Logic........................................................-0.3V to (V_CC+0.5V)

      Drivers...................................................................... ±15V

      Receivers............................................-0.3V to (V_CC+0.5V)

Storage Temperature.......................................................-65˚C to +150˚C

Power Dissipation...........................................................................500mW

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