TLC339IPW Datasheet, PDF (16/30 Pages) Texas Instruments – LinCOMS MICROPOWER QUAD COMPARATORS

TLC139, TLC339, TLC339Q
LinCMOS MICROPOWER QUAD COMPARATORS
TYPICAL APPLICATION DATA
5V
5V
12 V
Sense _{3.3 kΩ}
1 kΩ
12 V
5.1 kΩ
1/4 TLC139/TLC339
VCC
SENSE
RESIN ^TL7705A RESET
REF
CT GND
10 kΩ
To µP
Reset
2.5 V
R1
VUNREG
(see Note A)
R2
12 V
5.1 kΩ
To µP Interrupt
Early Power Fail
1/4
TLC139/TLC339
1 µF
Ct
(see Note B)
ǒ Ǔ NOTES:A. VUNREG = 2.5
R1 ) R2
R2
B. The value of Ct determines the time delay of reset.
Monitors 5-V Rail
Monitors 12-V Rail
Early Power Fail Warning
Figure 20. Enhanced Supply Supervisor
12 V
5.1 kΩ
100 kΩ
12 V
R1
100 kΩ
(see Note B)
R3
5 kΩ
(see Note C)
12 V
5.1 kΩ
Output 1
1/4 TLC139/TLC339
12 V
1/4
22 kΩ
TLC139/TLC339
100 kΩ
100 kΩ
12 V
5.1 kΩ
C1
0.01 µF
(see Note A)
Output 2
R3
100 kΩ
(see Note B)
1/4 TLC139/TLC339
Output 1
NOTES: A. Select C1 for a change in oscillator frequency where:
1/f = 1.85 (100 kΩ)C1
B. Select R1 and R3 to change duty cycle
C. Select R2 to change deadtime
Output 2
Figure 21. Two-Phase Nonoverlapping Clock Generator
16
WWW.TI.COM