Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LMS485 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMS485
Description  5V Low Power RS-485 / RS-422 Differential Bus
Download  13 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo 

LMS485 Datasheet(HTML) 5 Page - National Semiconductor (TI)

 
Zoom Inzoom in Zoom Outzoom out
 5 / 13 page
background image
Electrical Characteristics (Continued)
Over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OH
CMOS High-level Output
Voltage
I
OH = −4mA, VID = 200mV
3.5
V
V
OL
CMOS Low-level
I
OL = 4mA, VID = −200mV
0.40
V
I
OZR
Tristate Output Leakage
Current
0.4V
≤ V
O
≤ + 2.4V
±1µA
R
IN
Input Resistance
− 7V
≤ V
CM
≤+12V
12
k
Power Supply Current
I
CC
Supply Current
DE = V
CC, RE = GND or VCC
320
500
µA
DE = 0V, RE = GND or V
CC
315
400
I
OSD1
Driver Short-circuit Output
Current
V
O = high, −7V
≤ V
CM
≤ + 12V
(Note 8)
35
250
mA
I
OSD2
Driver Short-circuit Output
Current
V
O = low, − 7V
≤V
CM
≤ + 12V
(Note 8)
35
250
mA
I
OSR
Receiver Short-circuit Output
Current
0V
≤V
O
≤ V
CC
795
mA
Switching Characteristics
Driver
T
PLH,
T
PHL
Propagation Delay Input to
Output
R
L =54
Ω,C
L = 100pF
(Figure 3, Figure 7)
10
35
60
nS
T
SKEW
Driver Output Skew
R
L =54
Ω,C
L = 100 pF
(Figure 3, Figure 7)
510
nS
T
R,
T
F
Driver Rise and Fall Time
R
L =54
Ω,C
L = 100 pF
(Figure 3, Figure 7)
3
8
40
nS
T
ZH,
T
ZL
Driver Enable to Ouput Valid
Time
C
L = 100 pF, RL = 500
(Figure 4, Figure 8)
25
70
nS
T
HZ,
T
LZ
Driver Output Disable Time
C
L = 15 pF, RL = 500
(Figure 4, Figure 8)
30
70
nS
Receiver
T
PLH,
T
PHL
Propagation Delay Input to
Output
R
L =54
Ω,C
L = 100 pF
(Figure 5, Figure 7)
20
50
200
nS
T
SKEW
Receiver Output Skew
R
L =54
Ω,C
L = 100 pF
(Figure 5, Figure 7)
5nS
T
ZH,
T
ZL
Receiver Enable Time
C
L = 15 pF, RL =1 k
(Figure 6, Figure 10)
20
50
nS
Receiver Disable Time
20
50
nS
F
MAX
Maximum Data Rate
2.5
Mbps
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics
Note 2: All voltage values, except differential I/O bus voltage, are with respect to network ground terminal.
Note 3: The maximum power dissipation is a function of TJ(MAX), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD =
(TJ(MAX) -TA)/θJA. All numbers apply for packages soldered directly into a PC board.
Note 4: ESD rating based upon human body model, 100pF discharged through 1.5k
Ω.
Note 5: Voltage limits apply to DI, DE, RE pins.
Note 6: Differential input/output bus voltage is measured at the non-inverting terminal A with respect to the inverting terminal B.
Note 7: |
∆VOD| and |∆VOC| are changes in magnitude of VOD and VOC, respectively when the input changes from high to low levels.
Note 8: Peak current
www.national.com
5


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn