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LMS485E Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMS485E
Description  Low Power RS-485 / RS-422 Differential Bus Transceiver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMS485E Datasheet(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
OL
CMOS Low-level Output
Voltage
I
OL = −4 mA, VID = 200 mV
0.4
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
400
800
µA
DE = 0V, RE = GND or V
CC
360
560
I
OSD1
Driver Short-circuit Output
Current
V
O = high, −7V
≤ V
CM
≤ +12V
250
mA
I
OSD2
Driver Short-circuit Output
Current
V
O = low, − 7V
≤V
CM
≤ +12V
250
mA
I
OSR
Receiver Short-circuit Output
Current
0V
≤ V
O
≤ V
CC
95
mA
Switching Characteristics
Driver
T
PLH,
T
PHL
Propagation Delay Input to
Output
R
L =54
Ω,C
L = 100 pF
10
40
80
ns
T
SKEW
Driver Output Skew
R
L =54
Ω,C
L = 100 pF
5
10
ns
T
R,
T
F
Driver Rise and Fall Time
R
L =54
Ω,C
L = 100 pF
3
10
40
ns
T
ZH,
T
ZL
Driver Enable to Ouput Valid
Time
C
L = 100 pF
25
70
ns
T
HZ,
T
LZ
Driver Output Disable Time
C
L =15pF
35
70
ns
Receiver
T
PLH,
T
PHL
Propagation Delay Input to
Output
R
L =54
Ω,C
L = 100 pF
20
90
200
ns
T
SKEW
Receiver Output Skew
R
L =54
Ω,C
L = 100 pF
5
ns
T
ZH,
T
ZL
Receiver Enable Time
C
L =15 pF
20
50
ns
T
HZ,
T
LZ
Receiver Disable Time
C
L =15 pF
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 the 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, TA,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, 100 pF discharged through 1.5 k
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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