Philips Semiconductors Linear Products
Product specification
Dual voltage comparator
LM219/319
DESCRIPTION
PIN CONFIGURATION
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.
D, N Packages
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
NC
NC
NC
GND 1
OUTPUT 1
+ INPUT 1
– INPUT 1
V+
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.
– INPUT 2
V–
+ INPUT 2
GND 2
OUTPUT 2
8
TOP VIEW
FEATURES
• Two independent comparators
• Maximum input current of 1µA over temperature
• Inputs and outputs can be isolated from system ground
• High common-mode slew rate
• Operates from a single 5V supply
• Typically 80ns response time at ±15V
• Minimum fanout of 3 (each side)
EQUIVALENT SCHEMATIC
R1
3.5K
V+
R2
4K
R3
4K
R6
3K
R7
3K
Q9
Q4
Q8
Q3
Q7
C1
18pF
–
+
Q2
Q6
INPUTS
R10
170
R11
13K
R12
13K
R4
3K
R5
3K
Q1
R8
2K
Q5
Q15
R9
18K
Q10
Q13
C14
R15
300
Q22
OUTPUT
R13
600
R23
4K
R22 R20
60
R18
3.6K 1.9K
Q16
Q12
Q11
Q21
R16
600
R14
2K
R19
250
Q20
Q19
TO OTHER
HALF
R24
250
R25
600
R2
900
Q18
Q12
R17 3
V–
GND
277
August 31, 1994
853-0928 13721