Output state
VH
NT68275
VL
1.1V
1.7V
Input voltage
Figure 1. Schmitt Trigger Diagram
AC Characteristic
Symbol
Fhfy
Vhfly
Thflymin
Thflymax
Fvfy
Vvfly
Tvflymin
Tvflymax
Parameter
Horizontal Fly-back Frequency
Horizontal Fly-back Input
Minimum Pulse Width of Horizontal Fly-back
Maximum Pulse Width of Horizontal Fly-back
Vertical Fly-back Frequency
Vertical Fly-back Input
Minimum Pulse Width of Vertical Fly-back
Maximum Pulse Width of Vertical Fly-back
Min.
30
0
0.7
50
0
20
Typ.
Max.
*150
5
5.5
*200
5
1
Unit
KHz
V
V
us
us
Hz
V
V
us
ms
Notes
5V
HFLB
2.0 V
0V
Thwidth
5V
VFLB
2.0 V
0V
Tvwidth
Figure 2. H/V Fly-Back Signal
6