TL F 5786
DS75114
Dual
Differential
Line
Drivers
February 1996
DS75114 Dual Differential Line Drivers
General Description
The DS75114 dual differential line driver is designed to pro-
vide differential output signals with high current capability
for driving balanced lines such as twisted pair at normal line
impedances without high power dissipation The output
stages are similar to TTL totem-pole outputs but with the
sink outputs YS and ZS and the corresponding active pull-
up terminals YP and ZP available on adjacent package
pins Since the output stages provide TTL compatible output
levels these devices may also be used as TTL expanders
or phase splitters
Features
Y
Each circuit offers a choice of open-collector or active
pull-up (totem-pole) outputs
Y
Single 5V supply
Y
Differential line operation
Y
Dual channels
Y
TTL LS compatibility
Y
Designed to be interchangeable with Fairchild 9614 line
drivers
Y
Short-circuit protection of outputs
Y
High current outputs
Y
Clamp diodes at inputs and outputs to terminate line
transients
Y
Single-ended or differential AND NAND outputs
Y
Triple inputs
Connection Diagram
Dual-In-Line Package
TL F 5786 1
Top View
Positive logic Y
e
ABC
Z
e
ABC
Order Number DS75114N
See NS Package Number N16A
Truth Table
Inputs
Outputs
A
B
C
Y
Z
H
H
H
H
L
All Other Input Combinations
L
H
H
e
high level
L
e
low level
C1996 National Semiconductor Corporation
RRD-B30M36 Printed in U S A
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Absolute Maximum Ratings
(Note 1)
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
5 5V
OFF-State Voltage Applied to
Open-Collector Outputs
12V
Maximum Power Dissipation at 25 C
Cavity Package
1433 mW
Molded Package
1362 mW
Operating Free-Air Temperature Range
DS55114
b
55 C to
a
125 C
DS75114
0 C to
a
70 C
Storage Temperature Range
b
65 C to
a
150 C
Lead Temperature (
from case
for 60 seconds) J Package
300 C
Lead Temperature (
from case
for 4 seconds) N Package
260 C
Derate cavity package 9 6 mW C above 25 C derate molded package
10 9 mW C above 25 C (Note 2)
Operating Conditions
Min
Max
Units
Supply Voltage (V
CC
)
DS75114
4 75
5 25
V
High Level Output Current (I
OH
)
b
40
mA
Low Level Output Current (I
OL
)
40
mA
Operating Free-Air
Temperature (T
A
)
DS75114
0
70
C
Electrical Characteristics
Over recommended operating free-air temperature range (unless otherwise noted)
DS75114
Symbol
Parameter
Conditions (Note 3)
Min
Typ
Max
Units
(Note 4)
V
IH
High Level Input Voltage
2
V
V
IL
Low Level Input Voltage
0 8
V
IK
Input Clamp Voltage
V
CC
e
Min I
I
e b
12 mA
b
0 9
b
1 5
V
V
OH
High Level Output Voltage
V
CC
e
Min V
IH
e
2V
I
OH
e b
10 mA
2 4
3 4
V
V
IL
e
0 8V
I
OH
e b
40 mA
2
3 0
V
OL
Low Level Output Voltage
V
CC
e
Min V
IH
e
2V V
IL
e
0 8V
0 2
0 45
V
I
OL
e
40 mA
V
OK
Output Clamp Voltage
V
CC
e
5V I
O
e
40 mA T
A
e
25 C
6 1
6 5
V
V
CC
e
Max I
O
e b
40 mA T
A
e
25 C
b
1 1
b
1 5
I
O(off)
OFF-State Open-Collector
V
OH
e
12V
T
A
e
25
Output Current
V
CC
e
Max
T
A
e
125 C
m
A
V
OH
e
5 25V
T
A
e
25 C
1
100
T
A
e
70 C
200
I
I
Input Current at Maximum
V
CC
e
Max V
I
e
5 5V
1
mA
Input Voltage
I
IH
High Level Input Current
V
CC
e
Max V
I
e
2 4V
40
m
A
I
IL
Low Level Input Current
V
CC
e
Max V
I
e
0 4V
b
1 1
b
1 6
mA
I
OS
Short-Circuit Output
V
CC
e
Max V
O
e
0V
b
40
b
90
b
120
mA
Current (Note 5)
I
CC
Supply Current
Inputs Grounded No Load
V
CC
e
Max
37
50
mA
(Both Drivers)
T
A
e
25 C
V
CC
e
7V
47
70
Note 1
All voltage values are with respect to network ground terminal
Note 2
For operation above 25 C free-air temperature refer to Dissipation Derating Curves in the Thermal information section
Note 3
All parameters with the exception of OFF-state open-collector output current are measured with the active pull-up connected to the sink output
Note 4
All typical values are at T
A
e
25 C and V
CC
e
5V with the exception of I
CC
at 7V
Note 5
Only one output should be shorted at a time and duration of the short-circuit should not exceed one second
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2
Switching Characteristics
V
CC
e
5V T
A
e
25 C
Symbol
Parameter
Conditions
DS75114
Units
Min
Typ
Max
t
PLH
Propagation Delay Time
C
L
e
30 pF
(Figure 1)
15
30
ns
Low-to-High-Level Output
t
PHL
Propagation Delay Time
11
30
ns
High-to-Low-Level Output
AC Test Circuit and Switching Time Waveforms
TL F 5786 3
Note 1
The pulse generator has the following characteristics Z
OUT
e
50X
t
w
e
100 ns PRR
e
500 kHz
Note 2
C
L
includes probe and jig-capacitance
TL F 5786 4
FIGURE 1 (Notes 1 2)
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3
Typical Performance Characteristics
Input Voltage
Output Voltage vs Data
Input Voltage
Output Voltage vs Data
vs Output Current
High Level Output Voltage
TL F 5786 5
vs Output Current
Low Level Output Voltage
Temperature
Output Voltage vs Free-Air
Free-Air Temperature
Propagation Delay Times vs
TL F 5786 6
vs Supply Voltage
Supply Current (Both Drivers)
vs Free-Air Temperature
Supply Current (Both Drivers)
vs Frequency
Supply Current (Both Drivers)
TL F 5786 7
Data for temperatures below 0 C and above 70 C and for supply voltages below 4 75V and above 5 25V are applicable to DS55114 circuits only These
parameters were measured with the active pull-up connected to the sink output
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Schematic Diagram
(Each Driver)
TLF5786
2
Resistor
values
shown
are
typical
and
in
ohms
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5
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