LX5121 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX5121 Datasheet PDF : 4 Pages
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LX5121
PRODUCT DATABOOK 1996/1997
ULTRA 27-LINE, PLUG AND PLAY SCSI TERMINATOR
PRODUCTION DATA SHEET
UltraMAX
A B S O L U T E M A X I M U M R A T I N G S (Note 1)
TermPwr Voltage ..................................................................................................... 7V
Continuous Output Voltage Range .............................................................. 0 to 5.5V
Continuous Disable Voltage Range .............................................................. 0 to 5.5V
Operating Junction Temperature
Plastic (DB Packages) .................................................................................... 150ºC
Storage Temperature Range ............................................................. -65°C to +150°C
Solder Temperature (Soldering, 10 seconds) ................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device.
THERMAL DATA
DB PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
50°C/W
Junction Temperature Calculation: T = T + (P x θ ).
J
A
D
JA
The θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
PACKAGE PIN OUTS
T19
T20
T1
T2
W1
W2
T3
T4
T5
GND
GND
GND
GND
DISC1
DISC2
T6
T7
T8
T9
T10
T21
T22
1
44
2
43
3
42
4
41
5
40
6
39
7
38
8
37
9
36
10
35
11
34
12
33
13
32
14
31
15
30
16
29
17
28
18
27
19
26
20
25
21
24
22
23
DB PACKAGE
(Top View)
T27
T26
T25
T18
N1
T17
T16
T15
N.C.
GND
GND
GND
GND
VT
T14
T13
T12
N.C.
N.C.
T11
T24
T23
R E C O M M E N D E D O P E R AT I N G C O N D I T I O N S (Note 2)
Parameter
Symbol
Recommended Operating Conditions
Min.
Typ.
Max.
Termination Voltage
VTERM
4.0
5.5
High Level Disable Input Voltage
VIH
2
VTERM
Low Level Disable Input Voltage
VIL
0
0.8
Operating Virtual Junction Temperature Range
LX5121C
0
125
Note 2. Range over which the device is functional.
Units
V
V
V
°C
ELECTRICAL CHARACTERISTICS
Term Power = 4.75V unless otherwise specified. Unless otherwise specified, these specifications apply at the recommended operating ambient tempera-
ture of T = 25°C. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.
A
Parameter
Symbol
Test Conditions
LX5121
Units
Min. Typ. Max.
Output High Voltage
TermPwr Supply Current
VOUT
ICC All data lines = open
All data lines = 0.2V
2.65 2.85
V
12
20
mA
635 670 mA
Disable Pins 1 & 2 < 0.8V
50 150 µA
Output Current
Disable Input Current
Output Leakage Current
Channel Bandwidth
DISC1
DISC2
IOUT VOUT = 0.2V
IIN DISC1 = 0V
DISC2 = 0V
DISC1 and DISC2= < 0.8V, VO = 0.2V
BW
-20 -22 -24 mA
-10
µA
-10
µA
1
µA
35
MHz
Termination Sink Current, per Channel
ISINK
VOUT = 4V
7
mA
2
Copyright © 1999
Rev. 1.0 5/99
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