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DS96176 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. DS96176
Description  RS-485/RS-422 Differential Bus Transceiver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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DS96176 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Electrical Characteristics (Notes 3, 4) (Continued)
Over recommended temperature, common mode input voltage, and supply voltage ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
RECEIVER SECTION
V
OH
Output Voltage HIGH
V
ID = 200 mV, IOH = −400 µA,
2.7
V
Figure 3
V
OL
Output Voltage LOW
V
ID = −200 mV,
I
OL = 8,0 mA
0.45
V
Figure 3
I
OL = 16 mA
0.50
I
OZ
High Impedance State Output
V
O = 0.45V to 2.4V
±20
µA
I
I
Line Input Current (Note 9)
Other Input =
0V
V
I = 12V
1.0
mA
V
I = −7.0V
0.8
I
IH
Enable Input Current HIGH
V
IH = 2.7V
20
µA
I
IL
Enable Input Current LOW
V
IL = 0.4V
−100
µA
R
I
Input Resistance
12
k
I
OS
Short Circuit Output Current
(Note 10)
−15
−85
mA
I
CC
Supply Current (Total Package)
No Load
Outputs Enabled
40
mA
Outputs Disabled
Driver Switching Characteristics
V
CC = 5V, TA = 25˚C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
DD
Differential Output Delay Time
R
L = 60Ω, Figure 4
15
25
ns
t
TD
Differential Output Transition Time
R
L = 60Ω, Figure 4
15
25
ns
t
PLH
Propagation Delay Time,
R
L = 27Ω, Figure 5
12
20
ns
Low-to-High Level Output
t
PHL
Propagation Delay Time,
R
L = 27Ω, Figure 5
12
20
ns
High-to-Low Level Output
t
PZH
Output Enable Time to High Level
R
L = 110Ω, Figure 6
25
35
ns
t
PZL
Output Enable Time to Low Level
R
L = 110Ω, Figure 7
25
35
ns
t
PHZ
Output Disable Time from High Level
R
L = 110Ω, Figure 6
20
25
ns
t
PLZ
Output Disable Time from Low Level
R
L = 110Ω, Figure 7
29
35
ns
Receiver Switching Characteristics
V
CC = 5.0V, TA = 25˚C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PLH
Propagation Delay Time,
V
ID = 0V to 3.0V
16
25
ns
Low-to-High Level Output
C
L = 15 pF, Figure 8
t
PHL
Propagation Delay Time,
16
25
ns
High-to-Low Level Output
t
PZH
Output Enable Time to High Level
C
L = 15 pF, Figure 9
15
22
ns
t
PZL
Output Enable Time to Low Level
15
22
ns
t
PHZ
Output Disable Time from High Level
C
L = 5.0 pF, Figure 9
14
30
ns
t
PLZ
Output Disable Time from Low Level
24
40
ns
Note 2: “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” provide conditions for actual operation.
Note 3: Unless otherwise specified min/max limits apply across the 0˚C to +70˚C range for the DS96176. All typicals are given for VCC = 5V and TA = 25˚C.
Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise specified.
Note 5:
∆|VOD| and ∆|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level.
Note 6: In EIA Standards RS-422A and RS-485, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage, VOS.
Note 7: The algebraic convention, where the less positive (more negative) limit is designated minimum, is used in this data sheet for common mode input voltage
and threshold voltage levels only.
Note 8: Hysteresis is the difference between the positive-going input threshold voltage VT+, and the negative-going input threshold voltage, VT−.
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