Datasheet

LT119A/LT319A
LM119/LM319
1
119a319afc
TYPICAL APPLICATION
FEATURES DESCRIPTION
Dual Comparator
The LT
®
119A is an improved version of the LM119 dual
comparator. It features lower input offset voltage and
offset current, higher voltage gain, guaranteed common
mode rejection and input protection diodes.
The LT119A is capable of operation over a supply range
from 5V to ±15V and can drive 25mA loads from each
open collector output. A separate ground pin allows
the
LT119A to isolate system grounds.
Linear Technology Corporation’s advanced processing,
design techniques and reliability make the LT119A/LT319A
an ideal choice over previous devices in most comparator
applications.
Window Detector* Response Time For Various Input Overdrives
APPLICATIONS
n
Guaranteed Maximum 0.5mV Input Offset Voltage
n
Input Protection Diodes
n
Operates From Single 5V Supply
n
25mA Drive Capability
n
80ns Response Time
n
Window Detectors
n
High Speed One Shot
n
Relay/Lamp Drivers
n
Voltage Controlled Oscillators
L, LT , LT C , LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
–
+
–
+
5V
500Ω
TTL OUTPUT
LT119/319 TA1
1
10
3
4
8
9
5
7
6
2
1/2 LT319A
1/2 LT319A
V
UT
V
OUT
= 5V FOR
V
LT
≤ V
IN
≤ V
UT
V
OUT
= 0V FOR
V
IN
≤ V
LT
OR V
IN
≤ V
UT
V
IN
V
LT
*
ALLOWED WINDOW FOR SINGLE 5V SUPPLY IS 1.2V TO 3.8V
TIME (ns)
0
INPUT
VOLTAGE (mV)
OUTPUT
VOLTAGE (V)
50
0
1
2
4
50
150
200
LT119/319 TA2
100
5
6
3
0 100
250
300
350
20mV
2mV
5mV
V
S
= ±15V
R
L
= 500Ω
V
++
= 5V
T
A
= 25°C