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IMP5225

IMP
Part Number IMP5225
Manufacturer IMP
Description 18-Line Plug and Play SCSI Terminator
Published Jun 21, 2016
Detailed Description I M P 5 2 2 51 DATA COMMUNICATIONS 18-Line Plug and Play SCSI Terminator The IMP5225 SCSI terminator is part of IMP's ...
Datasheet PDF File IMP5225 PDF File

IMP5225
IMP5225

Overview
I M P 5 2 2 51 DATA COMMUNICATIONS 18-Line Plug and Play SCSI Terminator The IMP5225 SCSI terminator is part of IMP's family of highperformance SCSI terminators, which are designed to deliver true UltraSCSI performance.
The BiCMOS design offers superior performance over first generation linear passive and active techniques.
IMP's new architecture employs high-speed adaptive elements for each channel, thereby providing the fastest response possible — typically 35MHz, which is 100 times faster than the older linear regulator/terminator approach.
Products using the older regulator/resistor architecture have bandwidths which are dominated by the reference stabilization output capacitor and are therefore limited to 500kHz (see further discussion in the Functional Description section).
The IMP architecture eliminates the output compensation capacitor required in linear regulator/ resistor designs.
The IMP5225 architecture tolerates marginal system designs.
A key improvement offered by the IMP5225 lies in its ability to insure reliable, error-free communications even in systems which do not adhere to recommended SCSI hardware design guidelines, such as the use of improper cable lengths and impedances.
Frequently, this situation is not controlled by the peripheral or host designer.
The IMP5225 has two disconnect pins for SCSI Plug and Play (PnP) applications.
To enter the disconnect mode, the disconnect pins must be driven LOW thereby disconnecting the IMP5225 from the SCSI bus.
Quiescent current is less than 150µA when disabled.
Reduced component count is inherent in the IMP5225 architecture.
Traditional termination techniques require large stabilization and Key Features x SCSI Plug and Play — Dual active LOW disconnect pins x Ultra-Fast response for Fast-20 SCSI x 35MHz channel bandwidth x Sleep-mode current less than 150µA — Disconnects terminator from lows x NO external compensation capacitors x Compatible with active negation drivers x Compatible with passive and ac...


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