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LM18293 Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM18293
Description  Four Channel Push-Pull Driver
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM18293 Fiches technique(HTML) 1 Page - National Semiconductor (TI)

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TLH8706
March 1995
LM18293 Four Channel Push-Pull Driver
General Description
The LM18293 is designed to drive DC loads up to one amp
Typical applications include driving such inductive loads as
solenoids relays and stepper motors along with driving
switching power transistors and use as a buffer for low level
logic signals The four inputs accept standard TTL and DTL
levels for ease of interfacing Two enable pins are provided
that also accept the standard TTL and DTL levels Each
enable controls 2 channels and when an enable pin is dis-
abled (tied low) the corresponding outputs are forced to the
TRI-STATE condition If the enable pins are not connected
(ie floating) the circuit will function as if it has been en-
abled Separate pins are provided for the main power supply
(pin 8) and the logic supply (pin 16) This allows a lower
voltage to be used to bias up the logic resulting in reduced
power dissipation The chip is packaged in a specially de-
signed 16 pin power DIP The 4 center pins of this package
are tied together and form the die paddle inside the pack-
age This provides much better heat sinking capability than
most other DIP packages available The device is capable
of operating at voltages up to 36 volts
Features
Y
1A output current capability per channel
Y
Pin for pin replacement for L293B
Y
Special 16 pin power DIP package
Y
36 volt operation
Y
Internal thermal overload protection
Y
Logical ‘‘0’’ input voltage up to 15 volts results in high
noise immunity
Typical Connection
TLH8706 – 1
FIGURE 1 Application circuit showing bidirectional and onoff control of a single DC motor
using two outputs and unidirectional onoff function of two DC motors using a single output each
Order Number LM18293N
NS Package Number N16A
TRI-STATE
is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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