NTE1427
Integrated Circuit
VTR Reference Frequency Divider
Description:
The NTE1427 is an integrated circuit designed for VTR’s reference frequency dividing.
Features:
D
The functions consist of:
3.58MHz, 4.43MHz crystal oscillation
Frequency divider circuit
D
Divider ratio changeable either for NTSC system or PAL system
D
Divider output frequency
NTSC system 59.9Hz (3.58MHz)
PAL system 50.0Hz (4.43MHz)
D
Supply voltage either 9V or 12V
Absolute Maximum Ratings:
(T
A
= +25°C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5V
Supply Current, I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.5mA
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280°C
Operating Supply Voltage, V
CC(opr)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.8 ~ 12.5V
Operation ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−20
∼
+70°C
Storage temperature, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−40
∼
+150°C
Electrical Characteristics:
(T
A
= +25°C unless otherwise specified)
Parameter
Total circuit current
Sensitivity (Divider Input)
Sensitivity (N/P Switch)
High−level output voltage (Divider)
Low−level output voltage (Divider)
Output Voltage (X’tal Osc)
Symbol
I
tot
S
(1)
S
(2)
V
OH
V
OL
V
O
V
CC
= 9v, 3.58
Test Conditions
V
7−4
= 9V
V
CC
= 9V
V
CC
= 9V
Min
13
400
3
4.5
−
Typ
−
−
−
−
−
Max
21
−
−
−
0.5
Unit
mA
mV
p−p
V
V
V
MCU
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