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IMP5218CPW, IMP5218CPW 1, IMP5219

Table of contents:
Info of IMP5218CPW
Info of IMP5218CPW 1
Info of IMP5219

IMP5218CPW, IMP5218CPW 1, IMP5219 Selling Leads, Datasheet

MFG:IMP Package Cooled:07+/08+ D/C:20-pin, TSSOP

IMP5218CPW, IMP5218CPW 1, IMP5219 Picture

IMP5218CPW, IMP5218CPW 1, IMP5219 Datasheet download

Five Points

Part Number: IMP5218CPW

MFG: IMP

Package Cooled: 07+/08+

D/C: 20-pin, TSSOP

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IMP5219 General Description

The IMP5219 SCSI terminator is part of IMP's SCSI terminator family of high-performance, adaptive, non-linear mode SCSI products, which are designed to deliver true UltraSCSI performance in SCSI applications. The low voltage BiCMOS architecture employed in its design offers performance superior to older linear passive and active techniques. IMP's SCSI terminator 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 used by other manufacturers. Products using this older linear regulator approach have bandwidths which are dominated by the output capacitor and which are limited to 500KHz (see further discussion in the Functional Description section). This new architecture also eliminates the output compensation capacitor required in earlier terminator designs. Each is approved for use with SCSI-1, -2, -3, UltraSCSI and beyond - providing the highest performance alternative available today.

Another key improvement offered by the IMP5219 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 and, when problems occur, they are the first to be made aware of the problem. The IMP5219 architecture is much more tolerant of marginal system integrations. Recognizing the needs of portable and configurable peripherals, the IMP5219 has an active high TTL compatible leep/disable mode. Quiescent current is typically less than 275A in this mode, while the output capacitance is also less than 3pF. The obvious advantage of extended battery life for portable systems is inherent in the product's sleep-mode feature. Additionally, the disable function permits factory-floor or production-line configurability, reducing inventory and product-line diversity costs. Field configurability can also be accomplished without physically removing components which results in field returns due to mishandling.

Reduced component count is also inherent in the IMP5219 architecture. Traditional termination techniques require large stabilization and transient protection capacitors of up to 20mF in value and size. The IMP5219 architecture does not require these components, allowing all the cost savings associated with reduced inventory, board space, and assembly, plus higher reliability.

See the IMP5218 for a 9-channel Plug and Play SCSI terminator.

IMP5219 Maximum Ratings

Continuous Termination Voltage ............................10V
Continuous Output Voltage Range........................ 0 to 5.5V
Continuous Disable Voltage Range ........................0 to 5.5V
Operating Junction Temperature ......................0°C to 125°C
Storage Temperature Range ......................-65°C to +150°C
Solder Temperature (Soldering, 10 seconds)....................300°C

Note 1. Exceeding these ratings could cause damage to the device.

IMP5219 Features

· ULTRA-FAST RESPONSE FOR FAST-20 SCSI APPLICATIONS
· HOT SWAP COMPATIBLE
· 35MHz CHANNEL BANDWIDTH
· 3.5V OPERATION
· LESS THAN 3pF OUTPUT CAPACITANCE
· SLEEP-MODE CURRENT LESS THAN 275mA
·THERMALLY SELF LIMITING
· NO EXTERNAL COMPENSATION CAPACITORS
· IMPLEMENTS 8-BIT OR 16-BIT (WIDE) APPLICATIONS
· COMPATIBLE WITH ACTIVE NEGATION DRIVERS (60mA / CHANNEL)
· COMPATIBLE WITH PASSIVE AND ACTIVE TERMINATIONS
· APPROVED FOR USE WITH SCSI 1, 2, 3 AND ULTRASCSI

IMP5219 Connection Diagram

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