Page 1
DS75110A
Dual Line Drivers
DS75110A Dual Line Drivers
January 1996
General Description
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.
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, I
loading is induced. This is highly desirable in system applications using party line data communications.
, is specified so that minimum line
O(Off)
Features
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
Connection Diagram Function Table
14–Lead Dual-In-Line Package
and SO-14 Package
Logic Inhibitor
1 2 A/B INH
X X L X Off Off
X X X L Off Off
L X H H Off On
X L H H Off On
HHHHOnOff
=
H
High
L=Low
X=Don’t Care
Inputs Outputs
A1/B1 A2/B2
DS009619-1
Order Number DS75110AM or DS75110AN
See NS Package Number M14A or N14A
© 1999 National Semiconductor Corporation DS009619 www.national.com
Top View
Page 2
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
Ceramic DIP −65˚C to +175˚C
Molded DIP and SO-14 −65˚C to +150˚C
Lead Temperature
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
Suppy Voltage
Input Voltage (Any Input) 5.5V
Output Voltage (Any Output) −5.0V to +12V
Ceramic DIP (Soldering, 60 sec.) 300˚C
Recommended Operating Conditions
DS75110A Units
Min Typ Max
Positive Supply Voltage (V
Negative Supply Voltage (V
Positive Common Mode Voltage (V
Negative Common Mode Voltage (V
Operating Temperature (T
Note 1: Derate molded DIP package 8.3 mW/˚C above 25˚C, derate SO package 7.5 mW/˚C above 25˚C.
+
) 4.75 5.0 5.25 V
−
) −4.75 −5.0 −5.25 V
) 0 10 V
CM+
) 0 −3.0 V
CM−
) 0 25 70 ˚C
A
Electrical Characteristics (Notes 3, 4)
Over recommended operating temperature range, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
V
IH
V
IL
V
IC
I
O(On)
I
O(Off)
I
I
I
IH
I
IL
I+
(On)
I−
(On)
I+
(Off)
I−
(Off)
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 V
Note 4: When using only one channel of the line drivers, the other channel should be inhibited and/or its outputs grounded.
Input Voltage HIGH 2.0 V
Input Voltage LOW 0.8 V
=
Input Clamp Voltage V
On-State V
Output Current V
Off-State Output Current V
CC
CC
CC
CC
Min, I
=
Max, V
=
Min, V
=
Min, V
=
−12 mA −0.9 −1.5 V
I
=
10V 12 15 mA
O
=
−3.0V 6.5 12
O
=
10V 100 µA
O
(Inhibited Only)
Input Current A, B or C V
=
CC
Max, V
=
5.5V 1.0
I
At Maximum Inputs mA
Input Voltage D Input 2.0
Input Current HIGH A, B or C V
=
CC
Max, V
=
2.4V 40
I
Input µA
D Input 80
Input Current LOW A, B or C V
=
CC
Max, V
=
0.4V −3.0
I
Input mA
D Input −6.0
Positive Supply Current V
=
Max, 23 35 mA
CC
with Driver Enabled A & B Inputs at 0.4V,
Negative Supply Current C & D Inputs at 2.0V −34 −50 mA
with Driver Enabled
Positive Supply Current V
=
Max, 21 mA
CC
with Driver Inhibited A, B,C&DInputs
Negative Supply Current at 0.4V −17 mA
with Driver Inhibited
=
CC
5V and T
=
25˚C.
A
±
7.0V
www.national.com 2
Page 3
Switching Characteristics
=
V
CC
Symbol Parameter Conditions From To Min Typ Max Units
t
PLH
t
PHL
t
PLH
t
PHL
=
±
5V, T
25˚C
A
(Input) (Output)
Propagation Delay Time, LOW to HIGH C
Propagation Delay Time, HIGH to LOW R
=
40 pF, A or B 1 or 2 9.0 15 ns
L
=
50Ω 9.0 15 ns
L
Propagation Delay Time, LOW to HIGH See Test Circuit C or D 1 or 2 16 25 ns
Propagation Delay Time, HIGH to LOW 13 25 ns
The pulse generators have the following characteristics:
=
=
t
r
C
L
For simplicity, only one channel and the inhibitor connections are shown.
±
t
10 ns
f
includes probe and jib capacitance.
5.0 ns, t
=
500 ns, PRR=1.0 MHz, t
w1
=
1.0 µs, PRR=500 kHz, Z
W2
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
DS009619-3
=
50Ω.
O
DS009619-4
www.national.com3
Page 4
Equivalent Circuit
FIGURE 3. Equivalent Circuit
www.national.com 4
DS009619-2
Page 5
Typical Applications
DS009619-5
FIGURE 4. Simplex Operation
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.
DS009619-6
FIGURE 5. Half-Duplex Operation
www.national.com5
Page 6
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
www.national.com 6
Page 7
Notes
DS75110A Dual Line Drivers
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
labeling, can be reasonably expected to result in a
significant injury to the user.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
www.national.com
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
National Semiconductor
Europe
Fax: +49 (0) 1 80-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: sea.support@nsc.com
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
Loading...