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DS21T11

Features: • Fully compliant with SCSI1, Fast SCSI and Ultra SCSI• Provides active termination for 18 signal lines• 5% tolerance on termination resistors and voltage regulator• 5% tolerance on termination current• Low power down capacitance of 3 pF• Onboard therm...

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SeekIC No. : 004328823 Detail

DS21T11: Features: • Fully compliant with SCSI1, Fast SCSI and Ultra SCSI• Provides active termination for 18 signal lines• 5% tolerance on termination resistors and voltage regulator•...

DS21T11 Data Sheet

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Part Number:
DS21T11
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Fully compliant with SCSI1, Fast SCSI and Ultra SCSI
• Provides active termination for 18 signal lines
• 5% tolerance on termination resistors and voltage regulator
• 5% tolerance on termination current
• Low power down capacitance of 3 pF
• Onboard thermal shutdown circuitry
• SCSI bus hot plug compatible
• Fully supports actively negated SCSI signals


Pinout

Connection Diagram


Specifications

Voltage on Any Pin Relative to Ground                        1.0V to +7.0V
Operating Temperature                                               0°C to 70°C
Storage Temperature                                                  55°C to +125°C
Soldering Temperature                                                260°C for 10 seconds


Description

Fast SCSI and Ultra SCSI require the use of active terminations at both ends of every cable segment in SCSI system with singleended drivers and receivers. Ultra SCSI requires support of active negation and hot plugging. The DS21T11 is fully compliant with these standards.

The DS21T11 integrates a low dropout regulator and 18 precise switched 110 ohms termination resistors into a 28pin 300 mil SOIC package.

Active termination provides: greater immunity to voltage drops on the TERMPWR (TERMination PoWeR) line, enhanced highlevel noise immunity, intrinsic
TERMPWR decoupling, and very low quiescent current
consumption. One DS21T11 can be used to terminate
the Narrow SCSI bus, and a DS21T07 can be used with
a DS21T11 for termination of a Wide SCSI bus.




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