LX5250 View Datasheet(PDF) - Microsemi Corporation
Part Name
Description
MFG CO.
LX5250 Datasheet PDF : 8 Pages
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LX5250/5252
TM
®
9-Line Multimode SCSI Terminator
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Term Power (VTERM) .........................................................................................-0.3V to 7V
Operating Junction Temperature ................................................................................150°C
Storage Temperature Range………………………………………………..-65°C to 150°C
RoHS / Pb-free Peak Package Solder Reflow Temperature
(40 second maximum exposure)................................................................... 260°C (+0, -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
THERMAL DATA
DB 36 Pin QSOP
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
53.9°C/W
PW 28 Pin TSSOP
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
100°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow. θJA can vary significantly
depending on mounting technique. (See Application Notes Section: Thermal
considerations)
MASTER/SLAVE FUNCTION TABLE
Master/Slave
DIFFSENSE Status
L*
HI Z
0mA
H
1.3V
10mA Source
Open (Pull-Up)
1.3V
10mA Source
* When in Low state, terminator will sense state of DIFFSENSE line.
PACKAGE PIN OUT
NC
1
NC
2
NC
3
1+
4
1-
5
2+
6
2-
7
HEATSINK
8
HEATSINK
9
HEATSINK
10
3+
11
3-
12
4+
13
4-
14
5+
15
5-
16
DISCONNECT
17
GND
18
36
VTERM
35
HVD
34
LVD
33
SE
32
9-
31
9+
30
8-
29
8+
28
HEATSINK
27
HEATSINK
26
HEATSINK
25
7-
24
7+
23
6-
22
6+
21
DIFFB
20
DIFFSENSE
19
M/Sb
LX5250/5252
DB PACKAGE
(Top View)
N/C = Not internally connected
NC
1
1+
2
1-
3
2+
4
2-
5
NC
6
3+
7
3-
8
4+
9
4-
10
5+
11
5-
12
DISCONNECT
13
GND
14
28
VTERM
27
NC
26
9-
25
9+
24
8-
23
8+
22
NC
21
7-
20
7+
19
6-
18
6+
17
DIFFB
16
DIFFSENSE
15
M/Sb
LX5250 ONLY
PW PACKAGE
(Top View)
N/C = Not internally connected
RoHS / Pb-free 100% Matte Tin Lead Finish
DIFFSENSE/POWER UP/POWER DOWN FUNCTION TABLE
LX5250
LX5252
DISCONNECT DISCONNECT
DIFFSENSE
Outputs
Status Type
Quiescent
Current
L
L
L
H or Open
H
< 0.5V
Enable
SE
H
0.7V – 1.9V Enable
LVD
H
> 2.4V
Disable
HI-Z
L or Open
X
Disable
HI-Z
55mA
35mA
8mA
10µA
Copyright © 2002
Rev. 1.2b, 2005-08-29
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
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