ST LM119-LM219-LM319 High Speed Dual Comparators Data Sheet User Manual
Summary
These dual high-speed comparators provide precision signal comparison across a wide operating range, compatible with both single 5V logic supplies and bipolar ±15V power sources. Designed with extremely low input currents and high gain, they are suitable for general electronics designers and engineers requiring reliable analog voltage threshold detection. The manual provides comprehensive technical documentation covering detailed electrical characteristics, specified temperature ranges (including military/automotive grades), and full usage guidelines for complex circuit integration.
Page 1 Text Content
LM119-LM219-LM319
High speed dual comparators
Features Two independent comparators Supply voltage: +5V to ±15V Typically 80ns response time at ±15V
Minimum fan-out of 2 each side DIP14 (Plastic package)
Maximum input current of 1µa over operating temperature range Inputs and outputs can be isolated from system ground High common-mode slew rate
SO-14
Description
(Plastic micropackage)
These products are precision high speed dual comparators designed to operate over a wide range of supply voltages down to a single 5V logic supply and ground. They feature low input
Pin connections
currents and high gains.
(Top view)
The open collector of the output stage makes it compatible with TTL as well as capable of driving
lamps and relays at currents up to 25m A. N.C. N.C.
Although designed primarily for applications
requiring operation from digital logic supplies, the Ground 1 Output 1
comparators are fully specified for power supplies
Non-inverting input
up to ±15V.
Inverting input Inverting input
They feature faster response than LM111 at the VCC Non-inverting input 2-
expense of higher current consumption. However,
Output 2 Ground 2
the high speed, wide operating voltage range and low package count make the LM119/219/319 much more versatile.
January 2008 Rev 2 1/12
www.st.com
Page Summary Contents For ST LM119-LM219-LM319 High Speed Dual Comparators Data Sheet User Manual
Manual Details
| Brand | Dual |
|---|---|
| Pages | 12 |
| File Size | 583.26 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What type of loads can the open collector output drive?
It is compatible with TTL, and can drive lamps and relays using currents up to 25mA.
What is the typical operational speed at maximum voltage?
The typcial response time specified for operation at ±15V VCC is 80ns.
Can these comparators run on a single positive power supply?
Yes, they can be used in applications requiring operation from digital logic supplies or a single +5V up to ±15V.
Which model handles the widest temperature range for industrial use?
The LM219 is specified for the widest operating ambient range of -40 to +105°C.