Philips Semiconductors Linear Products
Product specification
Dual voltage comparator
LM219/319
DESCRIPTION
The LM319 series are precision high-speed dual comparators
fabricated on a single monolithic chip. They are designed to operate
over a wide range of supply voltages down to a single 5V logic
supply and ground. Further, they have higher gain and lower input
currents than devices like the
µA710.
The uncommitted collector of
the output stage makes the LM319 compatible with RTL, DTL, and
TTL as well as capable of driving lamps and relays at currents up to
25mA.
Although designed primarily for applications requiring operation from
digital logic supplies, the LM319 series are fully specified for power
supplies up to
±15V.
It features faster response than the LM111 at
the expense of higher power dissipation. However, the high-speed,
wide operating voltage range and low package count make the
LM319 much more versatile than older devices like the
µA711.
PIN CONFIGURATION
D, N Packages
NC
NC
GND 1
+ INPUT 1
– INPUT 1
V–
OUTPUT 2
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
NC
OUTPUT 1
V+
– INPUT 2
+ INPUT 2
GND 2
TOP VIEW
FEATURES
•
Two independent comparators
•
Operates from a single 5V supply
•
Typically 80ns response time at
±15V
•
Minimum fanout of 3 (each side)
EQUIVALENT SCHEMATIC
R1
3.5K
•
Maximum input current of 1µA over temperature
•
Inputs and outputs can be isolated from system ground
•
High common-mode slew rate
V+
R2
4K
R3
4K
R6
3K
R7
3K
Q9
Q4
Q3
–
INPUTS
+
Q1
R4
3K
R5
3K
R8
2K
Q5
R9
18K
Q22
R23
4K
Q21
Q20
Q19
R2
900
Q18
Q12
R17 3
R19
250
R22
60
R20
3.6K
R18
1.9K
Q11
R14
2K
R13
600
C14
Q16
R16
600
OUTPUT
Q10
Q13
Q15
R15
300
Q2
Q6
Q7
C1
18pF
R10
170
R11
13K
R12
13K
Q8
Q12
R25
600
TO OTHER
HALF
R24
250
V–
GND
August 31, 1994
277
853-0928 13721
PHILIPS [ NXP SEMICONDUCTORS ]
