UCC5606_15 Datasheet, PDF (1/14 Pages) Texas Instruments – 9-LINE TO 5 VOLT SCSI ACTIVE TERMINATOR, REVERSE DISCONNECT

UCC5606
SLUS347A – MAY 1995 – REVISED APRIL 2003
9ĆLINE 3 TO 5 VOLT SCSI ACTIVE TERMINATOR, REVERSE DISCONNECT
FEATURES
D Complies with SCSI, SCSI–2 and SPI–2
Standards
D 2.7-V to 5.25-V Operation
D 1.8-pF Channel Capacitance during
Disconnect
D 0.5-µA Supply Current in Disconnect Mode
D 110-Ω/2.5-kΩ Programmable Termination
D Completely Meets SCSI Hot Plugging
D –400-mA Sourcing Current for Termination
D +400-mA Sinking Current for Active Negation
Drivers
D Trimmed Termination Current to 4%
D Trimmed Impedance to 7%
D Current Limit and Thermal Shutdown
Protection
BLOCK DIAGRAM
DESCRIPTION
The UCC5606 provides 9 lines of active termination for
a small computer systems interface (SCSI) parallel bus.
The SCSI standard recommends active termination at
both ends of the cable segment.
The UCC5606 is ideal for high performance 3.3-V SCSI
systems. The key features contributing to such low
operating voltage are the 0.1-V drop out regulator and
the 2.7-V reference. During disconnect the supply
current is typically only 0.5 µA, which makes the device
attractive for battery powered systems.
The UCC5606 is designed with an ultra-low channel
capacitance of 1.8 pF, which eliminates effects on signal
integrity from disconnected terminators at interim points
on the bus.
UDG–94067–1
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2003, Texas Instruments Incorporated
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