DESCRIPTION

The LX5205 is an eighteen line active terminator for the SCSI parallel bus. This SCSI standard recommends active termination at both ends of the SCSI bus.

During disconnect mode, the LX5205 requires a meager 500nA of supply current while offering only 2.5pF of output capacitance. To enter this low power mode, the disconnect pins can be left open (floating) or driven low thereby disconnecting the terminating resistors and placing the internal low dropout regulator into low power mode.

KEY FEATURES

■ SCSI PLUG AND PLAY, DUAL LOW DISCONNECT, LOGIC LOW COMMAND DISCONNECTS ALL TERMINATION LINES

■ 2.5pF OUTPUT CAPACITANCE DURING DISCONNECT

■ 500nA SUPPLY CURRENT IN DISCONNECT MODE

■ 800μA SUPPLY CURRENT DURING NORMAL OPERATION

■ 100mA SINK CURRENT FOR ACTIVE NEGATION

■ LOGIC COMMAND DISCONNECTS ALL TERMINATION LINES

■ CURRENT LIMIT AND THERMAL PROTECTION

■ COMPATIBLE WITH SCSI 1, 2, 3, AND FAST-20 STANDARDS

■ HOT SWAP COMPATIBLE