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DS21T09 - Plug and Play SCSI Terminator

Description

The DS21T09 is intended for one-chip Plug and Play (PnP) SCSI termination.

Plug and Play SCSI requires the exit-point terminator on computer motherboards or host bus adapters to automatically switch off if an external device is connected to the system.

Features

  • Fully compliant with SCSI-1, Fast SCSI and Ultra SCSI Compatible with Plug and Play SCSI Profile Functional drop in replacement for the DS2109 Complementary part to DS21T07 for wide SCSI Provides active termination for 18 signal lines 2% tolerance on termination resistors and voltage regulator Bus termination sensing Low power-down capacitance of 3 pF Onboard thermal shutdown circuitry PIN.

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Datasheet preview – DS21T09

Datasheet Details

Part number DS21T09
Manufacturer Dallas Semiconducotr
File Size 219.85 KB
Description Plug and Play SCSI Terminator
Datasheet download datasheet DS21T09 Datasheet
Additional preview pages of the DS21T09 datasheet.

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Full PDF Text Transcription

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www.dalsemi.com DS21T09 Plug and Play SCSI Terminator FEATURES Fully compliant with SCSI-1, Fast SCSI and Ultra SCSI Compatible with Plug and Play SCSI Profile Functional drop in replacement for the DS2109 Complementary part to DS21T07 for wide SCSI Provides active termination for 18 signal lines 2% tolerance on termination resistors and voltage regulator Bus termination sensing Low power-down capacitance of 3 pF Onboard thermal shutdown circuitry PIN ASSIGNMENT PDI 1 28 GND R1 2 R2 3 R3 4 R4 5 R5 6 27 R18 26 R17 25 R16 24 R15 23 R14 HS-GND HS-GND PDO R6 R7 R8 R9 TPWR 7 8 9 10 11 12 13 14 22 TCS 21 HS-GND 20 PDE 19 R13 18 R12 17 R11 16 R10 15 VREF DS21T09S 28-Pin SOIC (300-mil) DESCRIPTION The DS21T09 is intended for one-chip Plug and Play (PnP) SCSI termination.
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