TLC393-Q1 Datasheet, PDF (13/18 Pages) Texas Instruments – DUAL MICROPOWER LinCMOS VOLTAGE COMPARATOR

TLC393-Q1
DUAL MICROPOWER LinCMOS VOLTAGE COMPARATOR
SGLS198A − SEPTEMBER 2004 − REVISED APRIL 2008
APPLICATION INFORMATION
5V
12-V
Sense
3.3 kΩ
1 kΩ
12 V
5.1 kΩ
+
−
1/2 TLC393
V_CC
RESIN
SENSE
TL7705A
RESET
5V
10 kΩ
To µP
Reset
2.5 V
12 V
REF
1 µF
C_T
GND
C_T
(see Note B)
V_UNREG
(see Note A)
5.1 kΩ
+
To µP Interrupt
R1
Early Power Fail
−
1/2 TLC393
R2
(R1 +R2)
NOTES: A. V_UNREG + 2.5 _R2
B. The value of C_T determines the time delay of reset.
Figure 20. Enhanced Supply Supervisor
Monitors 5-VDC Rail
Monitors 12-VDC Rail
Early Power Fail Warning
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