NSC DS7830J-883 Datasheet
DS7830/DS8830
Dual Differential Line Driver
DS7830/DS8830 Dual Differential Line Driver
March 1992
General Description
The DS7830/DS8830 is a dual differential line driver that
also performs the dual four-input NAND or dual four-input
AND function.
TTL (Transistor-Transistor-Logic) multiple emitter inputs allow this line driver to interface with standard TTL systems.
The differential outputs are balanced and are designed to
drive long lengths of coaxial cable, strip line, or twisted pair
transmission lines with characteristic impedances of 50Ω to
500Ω. The differential feature of the output eliminates
troublesome ground-loop errors normally associated with
single-wire transmissions.
Connection Diagram
Dual-In-Line and Flat Package
Features
n Single 5V power supply
n Diode protected outputs for termination of positive and
negative voltage transients
n Diode protected inputs to prevent line ringing
n High speed
n Short circuit protection
DS005799-2
Top View
Order Number DS8830N
For Complete Military 883 Specificatons, See RETS Data Sheet.
© 1999 National Semiconductor Corporation DS005799 www.national.com
See NS Package Number N14A
Order Number DS7830J/883 or DS7830W/883
See NS Package Number J14A
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
CC
Input Voltage 5.5V
Storage Temperature −65˚C to +150˚C
Lead Temperature (Soldering, 4 sec.) 260˚C
Output Short Circuit Duration (125˚C) 1 second
Maximum Power Dissipation (Note 1)
at 25˚C
7.0V
Operating Conditions
Supply Voltage (V
)
CC
DS8730 4.5 5.5 V
DS8830 4.75 5.25 V
Temperature (T
)
A
DS7830 −55 +125 ˚C
DS8830 0 +70 ˚C
Note 1: Derate cavity package 8.7 mW/˚C above 25˚C; derate molded package 9.7 mW/˚C above 25˚C.
Min Max Units
Cavity Package 1308 mW
Molded Package 1207 mW
Electrical Characteristics (Notes 3, 4)
Symbol Parameter Conditions Min Typ Max Units
V
IH
V
IL
V
OH
V
OL
I
IH
I
IL
I
SC
I
CC
V
I
Logical “1” Input Voltage 2.0 V
Logical “0” Input Voltage 0.8 V
Logical “1” Output Voltage V
Logical “0” Output Voltage V
Logical “1” Input Current V
Logical “0” Input Current V
Output Short Circuit Current V
Supply Current V
Input Clamp V
=
0.8V I
IN
=
2.0V I
IN
=
2.4V 120 µA
IN
=
V
5.5V 2 mA
IN
=
0.4V −4.8 mA
IN
=
CC
=
5.0V, (Each Driver) 11 18 mA
IN
=
CC
5.0V, T
Min, I
=
A
=
− 12 mA −1.0 −1.5 V
IN
=
−0.8 mA 2.4 V
OUT
=
I
40 mA 1.8 3.3 V
OUT
=
32 mA 0.2 0.4 V
OUT
=
I
40 mA 0.22 0.5 V
OUT
125˚C, (Note 5) −40 −100 −120 mA
Switching Characteristics
=
T
25˚C, V
A
Symbol Parameter Conditions Min Typ Max Units
t
pd1
t
pd0
t
pd1
t
pd0
t
1
t
2
Note 2: “Absolute Maximum Ratings” are those values beyond which the safety ofthedevicecannotbeguaranteed.Exceptfor“Operating Temperature Range” they
are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation.
Note 3: Unless otherwise specified min/max limits apply across the −55˚C to +125˚C temperature range for the DS7830 and across the 0˚C to +70˚C range for the
DS8830. Typical values for T
Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown
as max or min on absolute value basis.
Note 5: Only one output at a time should be shorted.
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=
5V, unless otherwise noted
CC
Propagation Delay AND Gate R
Propagation Delay NAND Gate R
=
400Ω,C
L
(
Figure 1
=
400Ω,C
L
(
Figure 1
=
15 pF 8 12 ns
L
)1118ns
=
15 pF 8 12 ns
L
)58ns
Differential Delay Load, 100Ω and 5000 pF, 12 16 ns
(
Figure 2
)
Differential Delay Load, 100Ω and 5000 pF, 12 16 ns
(
Figure 2
)
=
A
25˚C and V
=
5.0V.
CC
AC Test Circuit and Switching Time Waveforms
DS005799-4
FIGURE 1.
DS005799-8
FIGURE 2.
Typical Performance Characteristics
Output High Voltage
(Logical “1”)
vs Ouput Current
Differential Delay vs
Temperature
f=1 MHz
=
≤ 10 ns (10%to 90%)
t
t
r
f
Duty cycle=50
DS005799-9
%
DS005799-10
Threshold Voltage
vs Temperature
DS005799-7
DS005799-11
DS005799-12
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