LX5241 View Datasheet(PDF) - Microsemi Corporation
Part Name
Description
Manufacturer
LX5241 Datasheet PDF : 7 Pages
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PRODUCT DATABOOK 1996/1997
LX5241/5242/5243
MULTIMODE SCSI TERMINATOR
PRODUCTION DATA SHEET
UltraMAX
A B S O L U T E M A X I M U M R AT I N G S (Note 1)
TermPwr Voltage ................................................................................................. +7V
Operating Junction Temperature
Plastic (DB, PW Packages) .......................................................................... 150°C
Storage Temperature Range .............................................................. -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) .................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
THERMAL DATA
DB PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
PW PACKAGE:
50°C/W
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.
MASTER / SLAVE FUNCTION TABLE
MASTER /
SLAVE
DIFFSENSE
Status
L*
HI Z
0mA
H
1.3V
15mA Source
Open (Pull-up)
1.3V
15mA Source
* When in Low state, terminator will detect state of DIFFSENSE line.
DIFFSENSE / POWER UP / POWER DOWN FUNCTION TABLE
LX5241/5243 LX5242
DIFF
DISCONNECT DISCONNECT SENSE
Outputs
Quiescent
Status Type Current
L
H
L < 0.5V Enable S.E.
7mA
L
H
0.7 - 1.9V Enable LVD
21mA
L
H
Open
H
L
Open
H > 2.4V Disable HI Z
X
Disable HI Z
1mA
10µA
PACKAGE PIN OUTS
N.C.
1
N.C.
2
N.C.
3
1+
4
1-
5
2+
6
2-
7
HEATSINK
8
HEATSINK
9
HEATSINK
106
3+
116
3-
126
4+
136
4-
146
5+
156
5-
16
DISCONNECT
176
GND
186
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
DIFF B
20
DIFFSENSE
19
MASTER/SLAVE
DB PACKAGE (Top View)
LX5241/5242 ("N.C." = No Internal Connection)
1+
1
1-
2
2+
3
2-
4
3+
5
3-
6
4+
7
4-
8
5+
9
5-
106
DISCONNECT
116
GND
126
24
VTERM
23
N.C.
22
9-
21
9+
20
8-
19
8+
18
7-
17
7+
16
6-
15
6+
14
DIFFSENSE
13
MASTER/SLAVE
PW PACKAGE (Top View)
LX5241/5242 ("N.C." = No Internal Connection)
N.C.
1
1+
2
1-
3
2+
4
2-
5
N.C.
6
3+
7
3-
8
4+
9
4-
106
5+
116
5-
126
DISCONNECT
136
GND
146
28
VTERM
27
N.C.
26
9-
25
9+
24
8-
23
8+
22
N.C.
21
7-
20
7+
19
6-
18
6+
17
DIFFB
16
DIFFSENSE
15
MASTER/SLAVE
PW PACKAGE (Top View)
LX5243 ("N.C." = No Internal Connection)
2
Copyright © 2000
Rev. 1.4 11/00
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