lx5207 Microsemi Corporation, lx5207 Datasheet

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lx5207

Manufacturer Part Number
lx5207
Description
18-line Low Capacitance, ??power Scsi Terminator
Manufacturer
Microsemi Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
lx5207CDWP
Manufacturer:
LINFINITY
Quantity:
20 000
T
Copyright © 1998
Rev. 1.5
H E
The LX5207 is an eighteen line active ter-
minator for the SCSI parallel bus. This SCSI
standard recommends active termination at
both ends of the SCSI bus.
requires a meager 500nA of supply current
while offering only 2.5pF of output capaci-
tance. To enter this low power mode, the
disconnect pin can be left open (floating)
or driven high thereby disconnecting the
terminating resistors and placing the inter-
nal low dropout regulator into low power
mode. In disconnect mode each termina-
tion line presents a high impedance to the
SCSI bus with the overall effect being to
preserve high signal integrity and subse-
quent reliable, error free communications.
consumes only 800µA of current which is
3/98
I
During disconnect mode, the LX5207
During normal operation, the LX5207
N F I N I T E
R
E C E I V I N G
P
O W E R
W
AV E F O R M
F O R F U R T H E R I N F O R M A T I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
D E S C R I P T I O N
O F
LX5207
11861 W
Note: All surface-mount packages are available in Tape & Reel.
I
Append the letter "T" to part number. (i.e. LX5207CDWPT)
- 20MH
N N O V A T I O N
Receiver
ESTERN
P A C K A G E O R D E R I N F O
the lowest enabled supply current of any
terminator available on the market today.
Linfinity's proprietary BiCMOS low dropout
regulator architecture enables this unique
and very efficient operating characteristic.
trimmed channel output current specified
to a 5% tolerance. The maximum value
of the output current is trimmed as closely
as possible to the SCSI standard maximum
specification to give the highest possible
noise margin for fast SCSI operation. And
finally, the LX5207 sinks up to 100mA of
current making it compatible with today's
fast active negation drivers.
replacement for a variety of industry prod-
ucts such as the UC5601, UC5602, UC5608,
and UC5609.
The LX5207 also offers a precisely
The LX5207 is a superior, pin-for-pin
P R O D U C T H I G H L I G H T
0 to 70
T
Z
LX5268
A
(°C)
A
1 Meter, AWG 28
VENUE
DWP
, G
ARDEN
LX5207CDWP
Plastic SOWB
28-pin, Power
LX5268
18-L
G
ROVE
P
INE
Driver
R O D U C T I O N
D
L
, CA. 92841
OW
R I V I N G
LX5207
C
APACITANCE
W
AV E F O R M
, µP
2.5pF OUTPUT CAPACITANCE DURING
DISCONNECT
500nA SUPPLY CURRENT IN DISCONNECT
MODE
800µA SUPPLY CURRENT DURING NORMAL
OPERATION
100mA SINK CURRENT FOR ACTIVE
NEGATION
LOGIC COMMAND DISCONNECTS ALL
TERMINATION LINES
CURRENT LIMIT AND THERMAL PROTEC-
TION
COMPATIBLE WITH SCSI 1, 2, 3, AND
FAST-20 STANDARDS
HOT SWAP COMPATIBLE
CONSULT FACTORY FOR APPLICATION
TEST REPORT: 5207TR
D
K E Y F E A T U R E S
Discussion On Applying
Single-Ended SCSI Bus"
OWER
SCSI, Request Linfinity
A T A
"Understanding The
- 20MH
Application Note:
For An In-Depth
SCSI T
LIN D
NOTE:
S
LX5207
H E E T
Z
ERMINATOR
O C
#: 5207
1

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lx5207 Summary of contents

Page 1

... LX5268 Plastic SOWB T (°C) DWP A 28-pin, Power LX5207CDWP Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX5207CDWPT ESTERN VENUE ARDEN ROVE LIN D LX5207 µ ...

Page 2

... LX5207 TermPwr Voltage ................................................................................................. +7V Signal Line Voltage ................................................................................... 0V to +7V Regulator Output Current ................................................................................... 1.2A Operating Junction Temperature Plastic (DWP Package) ................................................................................. 150°C Storage Temperature Range .............................................................. -65°C to 150°C Lead Temperature (Soldering, 10 seconds) .................................................... 300° ...

Page 3

... Disconnect = Open OUT TERM -100mA REG I = -100mA REG REG Disconnect = 0V LX5207 ERMINATOR (Note 2) Typ. Max TERM 4 70°C. Termpwr = 4.75V, Disconnect A LX5207 Min. Typ. Max. 0.8 2.0 390 415 0.5 1 100 110 120 2.7 2.9 -20.3 -21.8 -23 -19.0 -21.8 -23 -19.5 -21.8 -23 -18.0 -21.8 -23 10 400 2 3.6 10 ...

Page 4

... INE OW APACITANCE OWER FIGURE 1 — LX5207 BLOCK DIAGRAM V TERM FIGURE 2 — 8/16-BIT SCSI SYSTEM APPLICATION HOST PERIPHERAL Narrow DB (0) ...

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