DS1487N NSC [National Semiconductor], DS1487N Datasheet - Page 2

• Manufacturer Part Number: DS1487N
• Description: Low Power RS-485 1⁄4 Unit Load Multipoint Transceiver
• Manufacturer: NSC [National Semiconductor]

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Symbol
V
V
V
V
V
V
I
I
V
V
V
I
R
I
I
I
I
IN1
IN2
OZR
CC
OSD1
OSD2
OSR
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified (Notes 3, 4)
V
V
V
OD1
OD2
OD3
OC
IH
IL
TH
OH
OL
IN
Electrical Characteristics
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
Enable Input Voltage
Driver Input Voltage (DI)
Driver Output Voltage (A, B)
Receiver Input Voltage (A, B)
Receiver Output Voltage (RO)
Maximum Package Power Dissipation
Derate M Package 9.5 mW/˚C above +25˚C
Derate N Package 6.0 mW/˚C above +25˚C
Maximum Package Power Dissipation
OD
OC
TH
(RE (Note 1), DE)
M Package
N Package
Differential Driver Output Voltage
Differential Driver Output Voltage
with Load
Change in Magnitude of Output
Differential Voltage
Differential Driver Output Voltage —
Full Load with Max V
Driver Common-Mode Output Voltage
Change in Magnitude of
Common-Mode Output Voltage
Input High Voltage
Input Low Voltage
Input Current
Input Current (Note 6)
DE = 0V, V
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 7)
Driver Short Circuit Current, V
HIGH
Driver Short Circuit Current, V
LOW
Receiver Short Circuit Current
CC
CC
)
Parameter
= 0V or 5.25V
CM
O
O
−0.5V to (V
−0.5V to (V
−0.5V to (V
@
@
=
=
+25˚C
+70˚C
−14V to +14V
−14V to +14V
(Note 2)
(No Load)
R
R
R
R1 = 54 , R2 = 375
V
R
R
V
V
V
−7V
V
I
I
0.4V
−7V
DE = V
DE = 0V, RE (Note 1) = 0V or V
−7V
−7V
V
O
O
CC
CC
CC
L
L
L
TEST
L
L
IN
IN
IN
CM
O
= −4 mA, V
= 4 mA, V
= 50 , (RS422), Figure 1
= 27 , (RS485), Figure 1
= 27
= 27
= 27
= GND
= 0V or V
= +12V
= −7V
+ 0.5V)
+ 0.5V)
+ 0.5V)
= 0V
1.19W
0.74W
+12V
V
V
V
V
= −7V to +12V, Figure 2
V
CC
CM
IN
O
O
O
, RE (Note 1) = 0V or V
or 50
or 50 , Figure 1
or 50 , Figure 1 (Note 5)
+12V
+12V
+12V
2.4V
ID
Conditions
+12V
CC
2
ID
= −0.2V
= 0.2V
(Note 5)
Storage Temperature Range
Lead Temperature Range
ESD (HBM)
Recommended Operating
Conditions
Supply Voltage (V
Bus Common Mode Voltage
Operating Free Air
Temperature (T
M Package
N Package
(Soldering, 4 sec.)
DS1487
CC
CC
A
CC
)
)
RE (Note 1)
DI, DE,
A, B
A, B
A, B
A, B
V
Pin
RO
RO
CC
+4.75
Min
−7
0
−0.2
Min Typ Max Units
1.5
1.5
1.5
2.0
3.5
48
2
0
0
0 −100 −200
7
+5.0
Typ
+25
−65˚C to +150˚C
190
200
200
2.8
2.3
2.0
70
68
+5.25
−250
Max
+70
+12
250
500
500
250
0.2
0.2
0.8
0.2
0.5
±
±
85
5
5
5
3
2
1
+260˚C
0.76W
0.47W
2 kV
Units
mV
mA
mA
mA
|V|
|V|
µA
µA
µA
µA
k
µA
µA
V
V
V
V
V
V
V
V
V
V
˚C
V
V