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ST21S07A Datasheet(PDF) 1 Page - STMicroelectronics |
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ST21S07A Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 10 page  1/10 February 2001 s FULLY COMPLIANT WITH SCSI, SCSI-2 AND EMERGING SCSI-E STANDARDS s PROVIDES ACTIVE TERMINATION FOR NINE SIGNAL LINES s LOW DROPOUT (0.5V) VREGS:2.85V s FACTORY TRIMMED TERMINATION 110 Ω ( ±2%) s POWER DOWN MODE ISOLATES TERMINATION RESISTORS FROM THE BUS s FULLY SUPPORTS ACTIVELY NEGATED SCSI SIGNALS s COMPATIBLE TO THE DS2107, DS2107A AND DS21S07 s ONBOARD THERMAL SHUTDOWN CIRCUITRY s AVAILABLE IN SO-16L AND TSSOP20 s SCSI BUS HOT PLUG-COMPATIBLE DESCRIPTION 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 a single-ended drivers and reveivers. The ST21S07A SCSI terminator, which is fully compliant with these standands, enables the designer to gain the benefits of active termination: greater immunity to voltages drop on the TERMPWR (TERMination PoWeR) line, enhanced high level noise immunity, intrinsic TERMPWR decouplig, and very low quiescent current consumption. The ST21S07A integrates a regulator and nine precise switched 110 Ω termination resistors into a monolithic IC. The ST21S07A can be electrically isolatesd from the SCSI bus without physical removal from the SCSI device. ORDERING CODES (*) Available on request Type Temperature Range Package Comments ST21S07ACW 0 to 70 °C SO-16L (Tube) 49parts per tube / 25tube per box ST21S07ACWR 0 to 70 °C SO-16L (Tape & Reel) 1000 parts per reel S21S07ACTR (*) 0 to 70 °C TSSOP20 (Tape & Reel) 2500 parts per reel ST21S07A SCSI TERMINATOR SOP TSSOP |
Similar Part No. - ST21S07A |
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Similar Description - ST21S07A |
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