General Description
The IMP6303 is a 4.0V power supply supervisor circuits optimized for lowpower microprocessor (μP), microcontroller (μC) and digital systems.
A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140ms after the supply has risen above the reset threshold. The IMP6303 has an active-low RESET output that is guaranteed to be in the correct state for VCC down to 1.1V.
The reset comparator is designed to ignore fast transients on VCC.
Low supply current makes the IMP6303 ideal for use in portable and battery operated equipment. The IMP6303 is available in a compact 3-pin SOT23, TO-92 and 5 pin SOT23-5 packages.

Features
*Monitor 4.0V supply
*140ms min. reset pulse width
*Active-low reset valid with 1.1V supply
*Small 3-pin SOT-23 package
*Small 3-pin TO-92 package
*Small 5-pin SOT-23-5 package
*No external components
*Specified over full temperature range
- –40°C to 105°C

Applications
*Embedded controllers
*Battery operated systems
*Intelligent instruments
*Wireless communication systems
*PDAs and handheld equipment

IMP6303JEUR-T  

IMP6303 - 3-Pin Microcontroller Power Supply Supervisor

General Description
The IMP2119 is a multimode SCSI terminator that conforms to the SCSI Parallel Interconnect-2 (SPI-2) specification developed by the T10 standards committee for low voltage differential (LVD) termination. Multimode compatibility permits the use of legacy devices on the bus without hardware alterations. Automatic mode selection is achieved through voltage detection on the diffsense line.
The IMP2119 delivers the ultimate in SCSI bus performance while saving component cost and board area. Elimination of the external capacitors also mitigates the need for a lengthy capacitor selection process. The individual high bandwidth drivers also maximize channel separation and reduce channel to channel noise and cross talk. The high bandwidth architecture insures ULTRA3 performance.
When the IMP2119 is enabled, the differential sense (DIFFSENSE) pin supplies a voltage between 1.2V and 1.4V. In application, this pin is tied to the DIFFSENSE input of the corresponding LVD transceivers. This action enables the LVD transceiver function. DIFFSENSE is capable of supplying a maximum of 15mA. Tying the DIFFSENSE pin HIGH places the IMP2119 in a high impedance state indicating the presence of an HVD device. Tying the pin LOW places the part in a single-ended mode while also signaling the multimode transceiver to operate in a singleended mode.
Recognizing the needs of portable and configurable peripherals, the IMP2119 have a TTL compatible sleep/disable mode. During this sleep/disable mode, power dissipation is reduced to a meager 15μA while also placing all outputs in a high impedance state. Also during sleep/disable mode, the DIFFSENSE function is disabled and is placed in a high impedance state.
Another key feature of the IMP2119 is the master/slave function. Driving this pin HIGH or floating the pin enables the 1.3V DIFFSENSE reference. Driving the pin LOW disables the on board DIFFSENSE reference and enables use of an external master reference device.

Key Features
*Auto-selectable LVD or single-ended termination
*3.0pF maximum disabled output capacitance
*Fast response, no external capacitors required
*Compatible with active negation drivers
*15μA supply current in disconnect mode
*Logic command disconnects all termination lines
*DIFFSENSE line driver
*Ground driver integrated for single-ended operation
*Current limit and thermal protection
*Hot-swap compatible (single-ended)
*Compatible with SCSI, SPI-2, SPI-3, SPI-4 ULTRA160 and ULTRA320
*Pin compatible with DS2119

IMP2119CPW  

IMP2119 - 9--Liine ULTRA3 LVD/SE SCSI Terminator

Description
The 9-channel IMP5111/5112 SCSI terminator is part of IMP's family of high-performance SCSI terminators that deliver true UltraSCSI performance.
The BiCMOS design offers superior performance over first generation linear regulator/resistor based terminators.
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.
The bandwidth of terminators based on the older regulator/resistor terminator architecture is limited to 500kHz since a large output stabilization capacitor is required.
The IMP architecture eliminates the external output compensation capacitor and the need for transient output capacitors while maintaining pin compatibility with first generation designs.
Reduced component count is inherent with the IMP5111/5112.
The IMP5111/5112 architecture tolerates marginal system designs.
Akey improvement offered by the IMP5111/5112 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 improper cable lengths and impedance.
Frequently, this situation is not controlled by the peripheral or host designer.
For portable and configurable peripherals, the IMP5111/5112 can be placed in a sleep mode with a disconnect signal.
Quiescent current is less than 275μA when disabled.
When disabled, the outputs are in a high impedance state with output capacitance less than 3pF.

Key Features
*Ultra-Fast response for Fast-20 SCSI applications
*35MHz channel bandwidth
*3.3V operation
*Less than 3pF output capacitance
*Sleep-mode current less than 275μA
*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
*Hot swap compatible
*Pin-for-pin compatible with LX5211 and UC5606 (IMP5111)
*Pin-for-pin compatible with LX5212 and UC5603/5613/5614 (IMP5112)

IMP5112
IMP5111CDP  

IMP5111 - 9-Liine SCSII Termiinattor – 35MHz Channell Bandwiidtth

DESCRIPTION
 The 9-channel IMP5218 SCSI terminator is part of IMP's family of highperformance SCSI terminators that deliver true UltraSCSI performance.
The BiCMOS design offers superior performance over first generation linear regulator/resistor based terminators.
The IMP5218 has two disconnect pins for SCSI Plug and Play (PnP) applications.
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.
The bandwidth of terminators based on the older regulator/resistor terminator architecture is limited to 500kHz since a large output stabilization capacitor is required.
The IMP architecture eliminates the external output compensation capacitor and the need for transient output capacitors while maintaining pin compatibility with first generation designs. Reduced component count is inherent with the IMP5218.
The IMP5218 architecture tolerates marginal system designs.
A key improvement offered by the IMP5218 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 improper cable lengths and impedance.
Frequently, this situation is not controlled by the peripheral or host designer.
For portable and configurable peripherals, the IMP5218 can be placed in a sleep mode with two disconnect signals.
When disabled, the quiescent current is typically 375μA, and the outputs are in a high impedance state.

Key Features
* SCSI plug and play
- Dual disconnect pins
- Logic LOW disconnects lines
* Hot swap compatible
* Ultra-Fast response for Fast-20 SCSI applications
* 35MHz channel bandwidth
* 3.5V operation
* Less than 3pF output capacitance
* 375μA disable-mode current
* 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

IMP5218CDW
IMP5218CDWT
IMP5218CPW
IMP5218CPWT

 

IMP5218 - 9--Line Plug and Play SCSI Terminator

The 9-channel IMP5219 SCSI terminator is part of IMP's family of highperformance SCSI terminators that deliver true UltraSCSI performance.
The BiCMOS design offers superior performance over first generation linear regulator/resistor based terminators.
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.
The bandwidth of terminators based on the older regulator/resistor terminator architecture is limited to 500kHz since a large output stabilization capacitor is required.
The IMP architecture eliminates the external output compensation capacitor and the need for transient output capacitors while maintaining pin compatibility with first generation designs. Reduced component count is inherent with the IMP5219.
The IMP5219 architecture tolerates marginal system designs.
A 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 improper cable lengths and impedance.
Frequently, this situation is not controlled by the peripheral or host designer.
For portable and configurable peripherals, the IMP5219 can be placed in a sleep mode with an active LOW disable signal.
Quiescent current is typically 375μA and output are in a high impedance state when disabled.

Key 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 375μA
* 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

IMP5219CDW
IMP5219CDWT
IMP5219CPW
IMP5219CPWT

 

IMP5219 - 9-Line SCSI Terminator