If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
)
7V
Input Voltage (DE , RE , and DI)
5.5V
Driver Output Voltage/
Receiver Input Voltage
−10V to +15V
Receiver Output Voltage (RO)
5.5V
Maximum Package Power Dissipation @ +25°C
N Package
(derate 9.3 mW/°C above +25°C)
1168 mW
M Package
(derate 5.8 mW/°C above +25°C)
726 mW
Storage Temperature Range
Lead Temperature (Soldering 4 sec.)
ESD Rating (HBM, 1.5 kΩ, 100 pF)
−65°C to +150°C
260°C
7.0 kV
Recommended Operating
Conditions
Supply Voltage, V
CC
Bus Voltage
Operating Temperature (T
A
)
DS36277T
Min
4.75
−7
−40
Max
5.25
+12
+85
Units
V
V
°C
Electrical Characteristics
Symbol
V
OD
V
oDO
V
oDO
V
T1
ΔV
T1
V
OS
ΔV
OS
V
OH
V
OL
I
OSD
Parameter
Differential Output Voltage
Output Voltage
Output Voltage
Differential Output Voltage
(Termination Load)
Balance of V
T1
|V
T1
− V
T1
|
Driver Common Mode
Output Voltage
Balance of V
OS
|V
OS
− V
OS
|
Output Voltage High
Output Voltage Low
Driver Short-Circuit
Output Current
DRIVER CHARACTERISTICS
(Notes 2, 4)
Over recommended Supply Voltage and Operating Temperature ranges, unless otherwise specified.
Conditions
I
O
= 0 mA (No Load)
I
O
= 0 mA (Output to GND)
R
L
= 54Ω (485)
R
L
= 100Ω (422)
R
L
= 54Ω
R
L
= 100Ω
R
L
= 54Ω
R
L
= 100Ω
R
L
= 54Ω
R
L
= 100Ω
I
OH
= −22 mA
I
OL
= +22 mA
V
O
= +12V
V
O
= −7V
V
O
= V
OH
, I
O
= −0.4 mA
−7V
≤
V
CM
≤
+12V
V
O
= V
OL
, I
O
= 8.0 mA
−7V
≤
V
CM
≤
+12V
V
CM
= 0V
Other Input = 0V
DE = V
IH
(Note 7)
V
O
= 0V
V
O
= 0.4 to 2.4V
V
ID
= 0V, I
OH
= −0.4 mA
V
ID
= OPEN, I
OH
= −0.4 mA
V
ID
= −0.5V, I
OL
= +8 mA
V
ID
= −0.5V, I
OL
= +16 mA
10
V
I
= +12V
V
I
= −7V
RO
−15
−20
2.3
2.3
80
0.5
−0.5
−32
1.4
3.7
3.7
0.3
0.3
20
0.7
0.8
1.5
−1.5
−85
+20
mV
mA
mA
mA
μA
V
V
V
V
kΩ
−0.5
−0.230
V
(Figure
3
)
(Figure
2
)
(Note 3)
(Figure
1
)
(Note 3)
(Figure
1
)
Min
1.5
0
0
1.3
1.7
−0.2
−0.2
0
0
−0.2
−0.2
2.7
3.7
1.3
92
−187
−0.150
2
290
−290
0
2.5
2.5
2.2
2.6
Typ
3.6
Max
6
6
6
5.0
5.0
0.2
0.2
3.0
3.0
0.2
0.2
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
mA
mA
V
RECEIVER CHARACTERISTICS
V
TH
V
TL
V
HST
I
IN
I
OSR
I
OZ
V
OH
V
OL
R
IN
Differential Input High
Threshold Voltage (Note 5)
Differential Input Low
Threshold Voltage (Note 5)
Hysteresis (Note 6)
Line Input Current
(V
CC
= 4.75V, 5.25V, 0V)
Short Circuit Current
TRI-STATE
®
Leakage Current
Output High Voltage
(Figure
12
)
Output Low Voltage
(Figure
12
)
Input Resistance
www.national.com
2
DS36277
Symbol
V
IH
V
IL
I
IH
I
IL
V
CL
I
CC
I
CCR
I
CCD
I
CCX
Parameter
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Input Clamp Voltage
Output Low Voltage
Supply Current
(No Load)
V
IH
= 2.4V
V
IL
= 0.4V
I
CL
= −18 mA
Conditions
DE ,
RE ,
or
DI
Min
2.0
GND
Typ
Max
V
CC
0.8
20
−100
Units
V
V
μA
μA
V
mA
mA
mA
mA
DEVICE CHARACTERISTICS
−0.7
39
24
40
27
−1.5
60
50
75
45
DE = 0V, RE = 0V, DI = 0V
DE = 3V, RE = 0V, DI = 0V
DE = 0V, RE = 3V, DI = 0V
DE = 3V, RE = 3V, DI = 0V
Switching Characteristics
Symbol
t
PLHD
t
PHLD
t
SKD
t
r
t
f
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
SK
t
PZH
t
PZL
t
PHZ
t
PLZ
Parameter
Diff. Prop. Delay Low to High
Diff. Prop. Delay High to Low
Diff. Skew (|t
PLHD
–t
PHLD
|)
Diff. Rise Time
Diff. Fall Time
Prop. Delay Low to High
Prop. Delay High to Low
Enable Time Z to High
Enable Time Z to Low
Disable Time High to Z
Disable Time Low to Z
Prop. Delay Low to High
Prop. Delay High to Low
Skew (|t
PLH
–t
PHL
|)
Enable Time Z to High
Enable Time Z to Low
Disable Time High to Z
Disable Time Low to Z
DRIVER CHARACTERISTICS
(Note 4)
Over recommended Supply Voltage and Operating Temperature ranges, unless otherwise specified.
Conditions
R
L
= 54Ω
C
L
= 50 pF
C
D
= 50 pF
(Figures
4, 5
)
R
L
= 27Ω,
C
L
= 15 pF
(Figures
6, 7
)
R
L
= 110Ω
C
L
= 50 pF
(Figure
8
–
Figure 11
)
Min
8
8
Typ
17
19
2
11
11
22
25
25
30
16
11
V
ID
= −1.5V to +1.5V
C
L
= 15 pF
(Figures
13, 14
)
C
L
= 15 pF
(Figures
15, 16
)
15
15
37
43
6
12
28
20
10
Max
60
60
10
60
60
85
85
60
60
60
60
90
90
15
60
60
60
60
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
RECEIVER CHARACTERISTICS
Note 1:
“Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.
Note 2:
Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise
specified.
Note 3:
Δ
|V
T1
| and
Δ
|V
OS
| are changes in magnitude of V
T1
and V
OS
, respectively, that occur when the input changes state.
Note 4:
All typicals are given for V
CC
= 5.0V and T
A
= +25°C.
Note 5:
Threshold parameter limits specified as an algebraic value rather than by magnitude.
Note 6:
Hysteresis defined as V
HST
= V
TH
− V
TL
.
Note 7:
I
IN
includes the receiver input current and driver TRI-STATE leakage current.
3
www.national.com
DS36277
Parameter Measurement Information
1138402
FIGURE 1. Driver V
T1
and V
OS
Test Circuit
1138403
FIGURE 2. Driver V
OH
and V
OL
Test Circuit
1138404
FIGURE 3. Driver Short Circuit Test Circuit
1138405
FIGURE 4. Driver Differential Propagation Delay and Transition Time Test Circuit
京公网安备 11010802033920号
EEWORLD
