View ds2105 datasheet:

DS2105 DS2105 SCSI Terminator FEATURES PIN ASSIGNMENT • Fully compliant with SCSI–1, Fast SCSI and Ultra TERMPWR1 PD 1 16 SCSI VREF2 R1 2 15 R9 R2 3 14 • Functionally compatible to the DS21S07A, targeted R3 for high volume applications 4 R8 13 12 5 R7 R4 • Provides active termination for nine signal lines 11 R6 R5 6 VREF1 7 NC • Laser–trimmed 110 ohm termination resistors have 10 5% tolerance GND 9 TERMPWR2 8 DS2105Z 16–PIN SOIC (150 MIL) • Low dropout voltage TERMPWR1 PD • Power–down mode isolates termination resistors 1 16 VREF2 from the bus 2 15 R1 NC R2 3 14 • Fully supports actively negated SCSI signals R3 4 R9 13 12 • Onboard thermal shutdown circuitry 5 R8 R4 11 R7 R5 6 • 16–pin plastic SOIC (DS2105) VREF1 7 R6 10 GND 9 TERMPWR2 8 DS21