SP3485

Features:

RS-485 and RS-422 Transceivers
Operates from a single +3.3V supply
Interoperable with +5.0V logic
Driver/Receiver Enable
Low Power Shutdown Mode (SP3481)
-7V to +12V Common-Mode Input Voltage Range
Allows up to 32 transceivers on the serial bus
Compatibility with the industry standard 75176 pinout
Driver Output Short-Circuit Protection




Pinout






Specifications

Specifications
Vcc (V)	3.3
No. of Tx	1
No. of Rx	1
Duplex	Half
Data Rate (kbps)	10000
ESD (KV)	2
Typ. Shutdown ICC (A)	10
Rx Fail-Safe Open	Yes
Multi-Drop Nodes	32

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 ............................................................................................. +6.0V
Input Voltages
Logic ....................................................................................... -0.3V to +6.0V
Drivers .................................................................................... -0.3V to +6.0V
Receivers ................................................................................ ±15V
Output Voltages
Drivers .................................................................................... ±15V
Receivers ................................................................................ -0.3V to +6.0V
Storage Temperature .............................................................-65°C to +150°C
Power Dissipation per Package
8-pin NSOIC (derate 6.90mW/ above +70) .......................... 600mW
8-pin PDIP (derate 11.8mW/ above +70) ............................. 1000mW




Description

The SP3481 and the SP3485 are a family of +3.3V low power half-duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-topin compatible with the Sipex SP481, SP483, and SP485 devices as well as popular industry standards. The SP3481 and the Sp3485 feature Sipex's BiCMOS process, allowing low power operation without sacrificing performance. The SP3481 and SP3485 meet the electrical specifications of RS-485 and RS-422 serial protocols up to 10Mbps under load. The SP3481 is equipped with a low power Shutdown mode.