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LP311 Datasheet, PDF (2/8 Pages) National Semiconductor (TI) – LP311 Voltage Comparator
February 1995
LP311 Voltage Comparator
General Description
Features
The LP311 is a low power version of the industry-standard Y Low power drain 900 mW on 5V supply
LM311 It takes advantage of stable high-value ion-implant- Y Operates from g15V or a single supply as low as 3V
ed resistors to perform the same function as an LM311 with Y Output can drive 25 mA
a 30 1 reduction in power drain but only a 6 1 slowdown of Y Emitter output can swing below negative supply
response time Thus the LP311 is well suited for battery- Y Response time 1 2 ms
powered applications and all other applications where fast
response is not needed It operates over a wide range of
Y Same pin-out as LM311
supply voltages from 36V down to a single 3V supply with Y Low input currents 2 nA of offset 15 nA of bias
less than 200 mA drain but it is still capable of driving a 25
mA load The LP311 is quite easy to apply without any oscil-
lation if ordinary precautions are taken to minimize stray
coupling from the output to either input or to the balance
pins (as described in the LM311 datasheet Application
Hints)
te Schematic Diagram
Y Large common-mode input range b14 6V to 13 6V
with g15V supply
Applications
Y Level-detector for battery-powered instruments
Y Low-power lamp or relay driver
Y Low-power zero-crossing detector
bsole Connection Diagram
ODual-In-Line Package
TL H 5711 – 7
Order Number LP311M or LP311N
See NS Package Numbers M08A or N08E
Top View
C1995 National Semiconductor Corporation TL H 5711
TL H 5711 – 4
RRD-B30M115 Printed in U S A