
9-L IN E LVD SCSI T ERMIN ATOR
LX5248/LX5249
PRODUCT D A T ABOOK 1996/1997
Copyright 2001
Rev. 0.6b
2
P RELIMINA R Y D AT A S HEET
UltraMAX
TermPwr Voltage .............................................................................................. +6.5V
Signal Line Voltage ................................................................................... 0V to 6.5V
Differential Voltage ................................................................................... 0V to 6.5V
Operating Junction Temperature
Plastic (PW Package) ................................................................................... 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.
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PACKAGE PIN OUTS
LX5248/LX5249
DIFFSENSE
Outputs
Quiescent
DISCONNECT
Status
Type
Current
L
L < 0.5V
Disable
HiZ
2mA
L
0.7V to 1.9V
Enable
LVD
21mA
L
H > 2.4V
Disable
HiZ
2mA
H
X
Disable
HiZ
10A
Open
X
Disable
HiZ
10A
DIFFSENSE / POWER UP / POWER DOWN FUNCTION TABLE
DB PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
50°C/W
PW PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθθθθ
JA
100°C/W
Junction Temperature Calculation: T
J = TA + (PD x θJA).
The
θ
JA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
THERMAL DATA
LX5249C ("N.C." = No Internal Connection)
DB PACKAGE (Top View)
N.C.
1+
1-
2+
2-
HEATSINK/GND
3+
3-
4+
4-
5+
5-
DISCONNECT
GND
V
TERM
HVD
LVD
SE
9-
9+
8-
8+
HEATSINK/GND
7-
7+
6-
6+
DIFF B
DIFFSENSE
MASTER/SLAVE
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10/27
11/26
12/25
13/24
14/23
15/22
16/21
17/20
18/19
LX5249CPW ("N.C." = No Internal Connection)
PW PACKAGE (Top View)
V
TERM
N.C.
9-
9+
8-
8+
7-
7+
6-
6+
DIFFSENSE
MASTER/SLAVE
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10/15
11/14
12/13
1+
1-
2+
2-
3+
3-
4+
4-
5+
5-
DISCONNECT
GND
MASTER /
DIFFSENSE
Output
SLAVE
Status
Current
L*
HI Z
0mA
H
1.3V
15mA Source
Open (Pull-up)
1.3V
15mA Source
MASTER / SLAVE FUNCTION TABLE
* When in Low state, terminator will detect state of DIFFSENSE line.
LX5248CPW ("N.C." = No Internal Connection)
PW PACKAGE (Top View)
V
TERM
LVD
9-
9+
8-
8+
N.C.
7-
7+
6-
6+
DIFFB
DIFFSENSE
MASTER/SLAVE
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10/19
11/18
12/17
13/16
14/15
N.C.
1+
1-
2+
2-
N.C.
3+
3-
4+
4-
5+
5-
DISCONNECT
GND
RoHS / Pb-free Peak Package Solder Reflow Temp.(40 sec. max. exp.)...260°C(+0, -5)
RoHS / Pb-free 100% Matte Tin Lead Finish