DESCRIPTION
The SP506 is a monolithic IC that supports eight (8) popular serial interface standards for DTE to DCE connectivity. The SP506 is pin-to-pin compatible to our SP505 multi-protocol transceiver but with faster throughput. The seven (7) drivers and seven (7) receivers can transmit and receive signals at 20Mbps. As with the SP505, the SP506 requires no additional external components for compliant operation for all of the eight (8) modes of operation. All necessary termination is integrated within the SP506 and is switchable when V.35 drivers, V.35 receivers, and V.11 receivers are used. The SP506 can operate as either a DTE or DCE.

■ Interface Modes Supported:
    ✓ RS-232 (V.28)                 ✓ X.21/RS-422 (V.11)
    ✓ EIA-530 (V.10 & V.11)    ✓ EIA-530A (V.10 & V.11)
    ✓ RS-449 (V.10 & V.11)     ✓ V.35 (V.35 & V.28)
    ✓ V.36 (V.10 & V.11)          ✓ RS-485 (unterminated V.11)
■ Software Selectable Protocol
■ Highest Differential Transmission Rates at over 20Mbps
■ +5V Only Operation
■ Seven (7) Drivers and Seven (7) Receivers
■ Driver and Receiver Tri-state Control
■ Internal Transceiver Termination Resistors for V.11 and V.35 Protocols
■ Loopback Self-Test Mode
■ Improved ESD Tolerance for Analog I/Os
■ Compliant to NET1/2 and TBR2 Physical Layer Requirements
■ Used in WAN Serial Ports in Routers, Switches, DSU/CSUs and other Access Devices