NSC DS75110AN Dual line driver Datasheet

DS75110A
Dual Line Drivers
General Description
Features
The DS75110A is a dual line driver with independent channels, common supply and ground terminals featuring constant current outputs. These drivers are designed for optimum performance when used with the DS75107, DS75108
line receivers.
The output current of the DS75110A is nominally 12 mA and
may be switched to either of two output terminals with the
appropriate logic levels at the driver input.
n Improved stability over supply voltage and temperature
ranges
n Constant current, high impedance outputs
n High speed: 15 ns max propagation delay
n Standard supply voltages
n Inhibitor available for driver selection
n High common mode output voltage range
(−3.0V to 10V)
n TTL input compatibility
Separate or common control inputs are provided for increased logic versatility. These control or inhibit inputs allow
the output current to be switched off (inhibited) by applying
low logic levels to the control inputs. The output current in
the inhibit mode, IO(Off), is specified so that minimum line
loading is induced. This is highly desirable in system applications using party line data communications.
Connection Diagram
Function Table
Inputs
14–Lead Dual-In-Line Package
and SO-14 Package
Outputs
Logic
Inhibitor
1
2
A/B
INH
A1/B1
A2/B2
X
X
L
X
Off
Off
X
X
X
L
Off
Off
L
X
H
H
Off
On
X
L
H
H
Off
On
H
H
H
H
On
Off
H = High
L = Low
X = Don’t Care
DS009619-1
Top View
Order Number DS75110AM or DS75110AN
See NS Package Number M14A or N14A
© 1999 National Semiconductor Corporation
DS009619
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DS75110A Dual Line Drivers
January 1996
Absolute Maximum Ratings (Note 2)
Molded DIP and SO-14
(Soldering, 10 sec.)
265˚C
Maximum Power Dissipation (Note 1) at 25˚C
Molded Package
1040 mW
SO Package
930 mW
± 7.0V
Suppy Voltage
Input Voltage (Any Input)
5.5V
Output Voltage (Any Output)
−5.0V to +12V
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Ceramic DIP
Molded DIP and SO-14
Lead Temperature
Ceramic DIP (Soldering, 60 sec.)
−65˚C to +175˚C
−65˚C to +150˚C
300˚C
Recommended Operating Conditions
DS75110A
Min
Typ
Units
Max
Positive Supply Voltage (V+)
4.75
5.0
5.25
V
Negative Supply Voltage (V−)
−4.75
−5.0
−5.25
V
V
Positive Common Mode Voltage (VCM+)
0
10
Negative Common Mode Voltage (VCM−)
0
−3.0
V
Operating Temperature (TA)
0
70
˚C
25
Note 1: Derate molded DIP package 8.3 mW/˚C above 25˚C, derate SO package 7.5 mW/˚C above 25˚C.
Electrical Characteristics (Notes 3, 4)
Over recommended operating temperature range, unless otherwise specified.
Symbol
Parameter
VIH
Input Voltage HIGH
VIL
Input Voltage LOW
VIC
Input Clamp Voltage
IO(On)
IO(Off)
Conditions
Min
Typ
Max
2.0
V
0.8
V
−0.9
−1.5
V
12
15
mA
µA
Output Current
VCC = Min, II = −12 mA
VCC = Max, VO = 10V
VCC = Min, VO = −3.0V
Off-State Output Current
VCC = Min, VO = 10V
100
VCC = Max, VI = 5.5V
1.0
On-State
6.5
Units
12
(Inhibited Only)
II
IIH
Input Current
A, B or C
At Maximum
Inputs
Input Voltage
D Input
Input Current HIGH
A, B or C
mA
2.0
VCC = Max, VI = 2.4V
40
Input
µA
D Input
IIL
Input Current LOW
A, B or C
80
VCC = Max, VI = 0.4V
−3.0
Input
mA
D Input
I+(On)
I−(On)
−6.0
Positive Supply Current
VCC = Max,
with Driver Enabled
A & B Inputs at 0.4V,
Negative Supply Current
23
35
mA
C & D Inputs at 2.0V
−34
−50
mA
21
mA
−17
mA
with Driver Enabled
I+(Off)
I−(Off)
Positive Supply Current
VCC = Max,
with Driver Inhibited
A, B, C & D Inputs
Negative Supply Current
at 0.4V
with Driver Inhibited
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 device operation.
Note 3: Unless otherwise specified min/max limits apply across 0˚C to +70˚C range for the DS75110. All typicals are given for VCC = 5V and TA = 25˚C.
Note 4: When using only one channel of the line drivers, the other channel should be inhibited and/or its outputs grounded.
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2
Switching Characteristics
VCC = ± 5V, TA = 25˚C
Symbol
Parameter
Conditions
From
To
(Input)
(Output)
1 or 2
tPLH
Propagation Delay Time, LOW to HIGH
Propagation Delay Time, HIGH to LOW
CL = 40 pF,
RL = 50Ω
A or B
tPHL
tPLH
Propagation Delay Time, LOW to HIGH
See Test Circuit
C or D
tPHL
Propagation Delay Time, HIGH to LOW
1 or 2
Min
Typ Max
Units
9.0
15
ns
9.0
15
ns
16
25
ns
13
25
ns
DS009619-3
The pulse generators have the following characteristics:
tr = tf = 10 ns ± 5.0 ns, tw1 = 500 ns, PRR = 1.0 MHz, tW2 = 1.0 µs, PRR = 500 kHz, ZO = 50Ω.
CL includes probe and jib capacitance.
For simplicity, only one channel and the inhibitor connections are shown.
FIGURE 1. AC Test Circuit
DS009619-4
FIGURE 2. AC Waveforms
3
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Equivalent Circuit
DS009619-2
FIGURE 3. Equivalent Circuit
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4
Typical Applications
DS009619-5
FIGURE 4. Simplex Operation
DS009619-6
All drivers are DS75110A. Receivers are DS75107 or DS75108. Twisted-pair or coaxial transmission line should be used for minimum noise and cross talk.
When only one driver in a package is being used, the outputs of the other driver should either be grounded or inhibited to reduce power dissipation.
FIGURE 5. Half-Duplex Operation
5
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Physical Dimensions
inches (millimeters) unless otherwise noted
Molded Surface Mount Package (M)
Order Number DS75110AM
NS Package Number M14A
Molded Dual-In-Line Package (N)
Order Number DS75110AN
NS Package Number N14A
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6
DS75110A Dual Line Drivers
Notes
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