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LT1080 Datasheet(Fiches technique) 1 Page - Linear Technology

Numéro de pièce LT1080
Description  Advanced Low Power 5V RS232 Dual Driver/Receiver
Télécharger  12 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
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1
LT1080/LT1081
Advanced Low Power
5V RS232 Dual Driver/Receiver
The LT
®1080/LT1081 are the only dual RS232 driver/
receiver with charge pump to guarantee absolutely no
latchup. These interface optimized devices provide a real-
istic balance between CMOS levels of power dissipation
and real world requirements for ruggedness. The driver
outputs are fully protected against overload and can be
shorted to
±30V. Unlike CMOS, the advanced architecture
of the LT1080/LT1081 does not load the signal line when
“shut down” or when power is off. Both the receiver and
RS232 outputs are put into a high impedance state. An
advanced output stage allows driving higher capacitive
loads at higher speeds with exceptional ruggedness
against ESD.
For applications requiring up to five drivers and five
receivers with charge pump in one package see the LT1130A
Series data sheet. A version of the LT1080/LT1081, the
LT1180A and LT1181A that use only 0.1
µF capacitors, is
also available. All of Linear Technology’s RS232 ICs are
available in standard surface mount packages.
s
Superior to CMOS
– Improved Speed: Operates over 120kBaud
– Improved Protection: Outputs Can Be Forced
to
±30V without Damage
– Three-State Outputs Are High
Impedance When Off
– Only Needs 1
µF Capacitors
s
Absolutely No Latchup
s
CMOS Comparable Low Power: 60mW
s
Can Power Additional RS232 Drivers: 10mA
s
Supply Current in Shutdown: 1
µA
s
Available in SO Package
s
Available with or without Shutdown
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Portable Computers
s
Battery-Powered RS232 Systems
s
Power Supply Generator
s
Terminals
s
Modems
Supply Generator Outputs
OUTPUT CURRENT (mA)
02468
10 12 14 16 18 20
1080/81 TA01a
10
8
6
4
2
0
–2
–4
–6
–8
–10
VCC = 5V
V+ OUTPUT
RL TO V
RL TO GND
RL TO GND
RL TO V
+
VOUTPUT
LOGIC
INPUTS
LOGIC
OUTPUTS
ON/OFF
18
10
13
11
12
6
5
4
2
16
9
14
8
15
7
3
17
5V INPUT
9V OUTPUT
–9V OUTPUT
RS232 OUTPUT
RS232 OUTPUT
RS232 INPUT
RS232 INPUT
1080/81 • TA01
5k
5k
LT1080
1
µF
1
µF
1
µF
1
µF
FEATURES
DESCRIPTIO
APPLICATIO S
TYPICAL APPLICATIO




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Numéro de composants électroniques

Numéro de pièceDescription des composantsHtml ViewFabricant
LT1180ALow Power 5V RS232 Dual Driver/Receiver with 0.1uF Capacitors 1 2 3 4 5 MoreLinear Technology
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