DS485N National Semiconductor, DS485N Datasheet - Page 2

• Manufacturer Part Number: DS485N
• Description: Transceiver IC
• Manufacturer: National Semiconductor

Specifications of DS485N

• No. Of Drivers: 1
• Driver Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: 0°C To +70°C
• I/o Type: Driver/Receiver
• Transceiver Type: Multipoint
• Mounting Type: Through Hole
• No. Of Channels: 1
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

www.national.com
Symbol
V
V
I
V
R
I
I
V
V
V
V
I
V
V
I
I
I
IN1
IN2
OZR
CC
OSD1
OSD2
OSR
Electrical Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified (Notes 2, 3)
V
V
V
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 (RE
Driver Input Voltage (DI)
Driver Output Voltage (A, B)
Receiver Input Voltage (A, B)
Receiver Output Voltage (RO)
OD1
OD2
OD3
OC
IH
IL
TH
OH
OL
IN
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
M Package
N Package
M 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 5)
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 6)
Driver Short Circuit Current, V
Driver Short Circuit Current, V
Receiver Short Circuit Current
CC
)
CC
Parameter
= 0V or 5.25V
*
, DE)
CM
−0.5V to (V
−0.5V to (V
−0.5V to (V
@
@
O
O
+25˚C
+70˚C
= HIGH
= LOW
−14V to +14V
−14V to +14V
(Note 1)
CC
CC
CC
+ 0.5V)
+ 0.5V)
+ 0.5V)
1.19W
0.74W
0.76W
(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
−7V
−7V
0V
O
O
+12V
TEST
IN
IN
IN
CM
L
L
L
L
L
= −4 mA, V
= 4 mA, V
= 50 , (RS422), Figure 1
= 27 , (RS485), Figure 1
= 27
= 27
= 27
= 0V or V
= +12V
= −7V
= 0V
V
= −7V to +12V, Figure 5
V
V
V
V
O
V
CC
CM
IN
O
O
2
O
, RE
or 50
or 50 , Figure 1
or 50 , Figure 1 (Note 4)
V
+12V
+12V
CC
Conditions
+12V
Storage Temperature Range
Lead Temperature Range
ESD (HBM)
Recommended Operating
Conditions
Supply Voltage (V
Bus Common Mode Voltage
2.4V
ID
*
+12V
CC
Operating Free Air
Temperature (T
ID
*
N Package
(Soldering, 4 sec.)
DS485
DS485T
= 0V or V
= −0.2V
= 0V or V
= 0.2V
(Note 4)
CC
CC
A
CC
)
)
A, B
RE
A, B
A, B
A, B
V
Pin
DE,
RO
RO
DI,
CC
*
+4.75
Min
−40
−7
0
−0.2
Min Typ
1.5
1.5
2.0
3.5
12
35
35
2
7
+5.0
Typ
+25
+25
200
200
2.8
2.3
2.0
70
−65˚C to +150˚C
+5.25
Max
−0.8
+70
+85
+12
Max
900
500
250
250
0.2
0.2
1.0
0.2
0.4
0.8
±
±
85
5
5
5
3
2
1
+260˚C
0.47W
Units
2 kV
Units
mA
mA
mV
mA
mA
mA
k
˚C
˚C
|V|
|V|
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V