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DS481_00 Datasheet, PDF (2/8 Pages) National Semiconductor (TI) – Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode | |||
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Absolute Maximum Ratings (Note 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Enable Input Voltage
+12V
(RE (Note 1), DE)
Driver Input Voltage (DI)
Driver Output Voltage (A, B)
â0.5V to (VCC + 0.5V)
â0.5V to (VCC + 0.5V)
â14V to +14V
Receiver Input Voltage (A, B)
â14V to +14V
Receiver Output Voltage (RO)
â0.5V to (VCC + 0.5V)
Maximum Package Power Dissipation @ +25ËC
M Package
1.19W
Derate M Package 9.5 mW/ËC above +25ËC
Maximum Package Power Dissipation @ +70ËC
M Package
Storage Temperature Range
Lead Temperature Range
(Soldering, 4 sec.)
ESD (HBM)
0.76W
â65ËC to +150ËC
+260ËC
â¥2 kV
Recommended Operating
Conditions
Supply Voltage (VCC)
Operating Free Air
Temperature (TA)
DS481T
Bus Common Mode
Voltage
Min Typ Max Units
+4.75 +5.0 +5.25 V
â40 +25 +85 ËC
â7
+12 V
Electrical Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified (Notes 4, 5)
Symbol
Parameter
Conditions
Pin
Min Typ Max Units
VOD1
VOD2
âVOD
Differential Driver Output Voltage
Differential Driver Output Voltage
with Load
Change in Magnitude of Output
Differential Voltage
(No Load)
RL = 50â¦, (RS422), Figure 1
RL = 27â¦, (RS485), Figure 1
RL = 27⦠or 50⦠(Note 6)
A, B
1.5
5V
2 2.8
V
1.5 2.3 5 V
0.2 |V|
VOD3
VOC
âVOC
Differential Driver Output Voltage â
Full Load with Max VCM
Driver Common-Mode Output Voltage
Change in Magnitude of Common-Mode
Output Voltage
R1 = 54â¦, R2 = 375â¦
VTEST = â7V to +12V, Figure 2
RL = 27⦠or 50â¦, Figure 1
RL = 27⦠or 50â¦, Figure 1
(Note 6)
1.5 2.0 5 V
0
3V
0.2 |V|
VIH
VIL
IIN1
IIN2
VTH
âVTH
VOH
VOL
IOZR
RIN
ICC
Input High Voltage
Input Low Voltage
Input Current
Input Current (Note 7)
DE = 0V, VCC = 0V or 5.25V
Receiver Differential Threshold Voltage
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
TRI-STATE Output Current at Receiver
Receiver Input Resistance
No-Load Supply Current (Note 8)
VIN = 0V or VCC
VIN = +12V
DS481T
VIN = â7V
â7V ⤠VCM ⤠+12V
VCM = 0V
IO = â4 mA, VID = 0.2V
IO = 4 mA, VID = â0.2V
0.4V ⤠V O ⤠2.4V
â7V ⤠VIN ⤠+12V
DS481T
DE = V CC, RE (Note 1) = 0V or V
CC
DI, DE, RE 2.0
V
(Note 1)
0.8 V
±2 µA
A, B
0 190 500 µA
0 â100 â400 µA
â0.2
0.2 V
70
mV
RO
3.5
V
0.5 V
±1 µA
A, B
24
kâ¦
V CC
200 500 µA
ICCX
Sleep Mode Supply Current
IOSD1
IOSD2
IOSR
Driver Short Circuit Current, VO = HIGH
Driver Short Circuit Current, VO = LOW
Receiver Short Circuit Current
DE = 0V, RE (Note 1) = 0V or VCC
DE = GND
RE (Note 1)= VCC (Figure 14)
â7V ⤠VO ⤠+12V
â7V ⤠VO ⤠+12V
VO = GND
200 500 µA
VCC
0.2 10 µA
A, B
RO
7
250 mA
â250 mA
85 mA
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