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LMS485IM データシート(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LMS485IM
部品情報  5V Low Power RS-485 / RS-422 Differential Bus
PDF  13 Pages
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMS485IM データシート(HTML) 5 Page - National Semiconductor (TI)

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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
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