Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
−65˚C to +150˚C
260˚C
Lead Temperature (Soldering 4 sec.)
ESD Rating (HBM, 1.5 kΩ, 100 pF)
≥ 6.0 kV
Recommended Operating
Conditions
Supply Voltage (VCC
)
7V
Input Voltage (DE , RE , and DI)
Driver Output Voltage/
5.5V
Min
Max
5.25
+12
Units
Receiver Input Voltage
−10V to +15V
5.5V
Supply Voltage, VCC
Bus Voltage
4.75
−7
V
V
Receiver Output Voltage (RO)
@
Maximum Package Power Dissipation +25˚C
Operating Temperature (TA)
DS36277T
N Package
(derate 9.3 mW/˚C above +25˚C)
−40
+85
˚C
1168 mW
726 mW
M Package
(derate 5.8 mW/˚C above +25˚C)
Electrical Characteristics (Notes 2, 4)
Over recommended Supply Voltage and Operating Temperature ranges, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DRIVER CHARACTERISTICS
VOD
VoDO
VoDO
VT1
Differential Output Voltage
IO = 0 mA (No Load)
IO = 0 mA (Output to GND)
1.5
0
3.6
6
V
V
Output Voltage
Output Voltage
6
0
6
V
Differential Output Voltage
(Termination Load)
RL = 54Ω (485)
RL = 100Ω (422)
RL = 54Ω
(Figure 1 )
1.3
1.7
−0.2
−0.2
0
2.2
2.6
5.0
5.0
0.2
0.2
3.0
3.0
0.2
0.2
V
V
∆VT1
VOS
Balance of VT1
(Note 3)
V
|VT1 − VT1
|
RL = 100Ω
RL = 54Ω
V
Driver Common Mode
Output Voltage
(Figure 1 )
(Note 3)
2.5
2.5
V
RL = 100Ω
RL = 54Ω
0
V
∆VOS
Balance of VOS
−0.2
−0.2
2.7
V
|VOS − VOS
|
RL = 100Ω
IOH = −22 mA
IOL = +22 mA
VO = +12V
VO = −7V
V
VOH
VOL
IOSD
Output Voltage High
Output Voltage Low
(Figure 2 )
(Figure 3 )
3.7
1.3
V
2
V
Driver Short-Circuit
Output Current
92
290
−290
mA
mA
−187
RECEIVER CHARACTERISTICS
VTH
Differential Input High
Threshold Voltage (Note 5)
VO = VOH, IO = −0.4 mA
−7V ≤ VCM ≤ +12V
VO = VOL, IO = 8.0 mA
−7V ≤ VCM ≤ +12V
VCM = 0V
−0.150
−0.230
0
V
V
VTL
Differential Input Low
Threshold Voltage (Note 5)
−0.5
VHST
IIN
Hysteresis (Note 6)
80
0.5
−0.5
−32
1.4
3.7
3.7
0.3
0.3
20
mV
mA
mA
mA
µA
V
Line Input Current
(VCC = 4.75V, 5.25V, 0V)
Other Input = 0V
DE = VIH (Note 7)
VO = 0V
VI = +12V
VI = −7V
1.5
−1.5
−85
+20
IOSR
IOZ
Short Circuit Current
TRI-STATE® Leakage Current
RO
−15
−20
2.3
VO = 0.4 to 2.4V
VOH
Output High Voltage
(Figure 12 )
VID = 0V, IOH = −0.4 mA
VID = OPEN, IOH = −0.4 mA
VID = −0.5V, IOL = +8 mA
VID = −0.5V, IOL = +16 mA
2.3
V
VOL
RIN
Output Low Voltage
(Figure 12 )
0.7
0.8
V
V
Input Resistance
10
kΩ
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