DS2114 - Dallas Semiconducotr

DS2114 SCSI Terminator

The SCSI–2 and SCSI–3 standards recommend the use of active terminations at both ends of every cable segment in a SCSI system with single–ended drivers and receivers. The DS2114 SCSI Terminator, which is fully compliant with these standards, enables the designer to gain the benefits of active termination: greater immunity to voltage drops on the TERMPWR (TER.

Features

PIN ASSIGNMENT TERMPWR1 R1 R2 R3 R4 R5 VREF1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 NC VREF2 R9 R8 R7 R6 NC TERMPWR2
• Fully compliant with SCSI, SCSI
  –2 and SCSI
  –3 standards
• Provides active termination for nine signal lines
• Laser
  –trimmed 110 ohms termination resistors have 2% tolerance
• Low dropout voltage regulator
• Fully supports actively negated SCSI signals
• Onboard thermal shutdown circuitry
• Narrow 16
  –pin plastic SOIC (DS2114Z) DS2114Z 16
  –PIN SOIC (150 MIL) DESCRIPTION The SCSI
  –2 and SCSI
  –3 standards recommend the use of active terminations at both ends of every cable s.