DS96176 Datasheet, PDF (2/12 Pages) National Semiconductor (TI) – RS-485/RS-422 Differential Bus Transceiver

Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Molded DIP
−65˚C to +150˚C
Lead Temperature
Molded DIP (soldering, 10
sec.)
265˚C
Maximum Power Dissipation (Note 1) at 25˚C
Molded Package
930 mW
Supply Voltage
7.0V
Differential Input Voltage
+15V/−10V
Enable Input Voltage
5.5V
Recommended Operating
Conditions
Min Typ Max
Supply Voltage (V_CC)
Voltage at Any Bus Terminal
4.75 5.0 5.25
(Separately or Common Mode) −7.0
12
Differential Input Voltage (V_ID)
±12
Output Current HIGH (I_OH)
Driver
−60
Receiver
−400
Output Current LOW (I_OL)
Driver
60
Receiver
16
Operating Temperature (T_A)
0 25 70
Note 1: Derate molded DIP package 7.5 mW/˚C above 25˚C.
Units
V
V
V
mA
µA
mA
mA
˚C
Electrical Characteristics (Notes 3, 4)
Over recommended temperature, common mode input voltage, and supply voltage ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min Typ Max Units
DRIVER SECTION
V_IH
V_IL
V_OH
V_OL
V_IC
|V_OD1|
|V_OD2|
∆|V_OD2|
V_OC
∆|V_OC|
Input Voltage HIGH
Input Voltage LOW
Output Voltage HIGH
Output Voltage LOW
Input Clamp Voltage
Differential Output Voltage
Differential Output Voltage
Change in Magnitude of
Differential Output Voltage (Note 5)
Common Mode Output Voltage (Note 6)
Change in Magnitude of
Common Mode Output Voltage (Note 5)
I_OH = −20 mA
I_OL = 20 mA
I_I = −18 mA
I_O = 0 mA
R_L = 100Ω, Figure 1
R_L = 54Ω, Figure 1 and Figure 2
R_L = 54Ω
V_CM = 0V Figure 1 and Figure 2
R_L = 100Ω Figure 1
R_L = 54Ω or 100Ω, Figure 1
2.0
V
0.8
V
3.1
V
0.85
V
−1.5 V
6.0
V
2.0 2.25
V
1.5 2.0
±0.2 V
3.0
V
±0.2 V
I_O
Output Current (Note 5)
(Includes Receiver I_I)
I_IH
Input Current HIGH
I_IL
Input Current LOW
I_OS
Short Circuit Output Current
(Note 10)
I_CC
Supply Current
Output Disabled
V_I = 2.4V
V_I = 0.4V
V_O = −7.0V
V_O = 0V
V_O = V_CC
V_O = 12V
No Load
V_O = 12V
V_O = −7.0V
Outputs Enabled
Outputs Disabled
1.0 mA
−0.8
20
µA
−100 µA
−250
−150 mA
150
250
35
mA
40
RECEIVER SECTION
V_TH
Differential Input High
Threshold Voltage
V_O = 2.7V, I_O = −0.4 mA
0.2
V
V_TL
Differential Input Low
V_O = 0.5V, I_O = 8.0 mA
−0.2
V
Threshold Voltage (Note 7)
V_T+ − V_T−
V_IH
V_IL
V_IC
Hysteresis (Note 8)
Enable Input Voltage HIGH
Enable Input Voltage LOW
Enable Input Clamp Voltage
V_CM = 0V
I_I = −18 mA
50
mV
2.0
V
0.8
V
−1.5 V
www.national.com
2