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NTE1581 Datasheet PDF : 2 Pages
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NTE1581
Integrated Circuit
CMOS, Frequency Divider/Counter for VCR
Description:
The NTE1581 is a frequency divider manufactured by aluminum CMOS technology. It produces a fre-
quency of 1/59719 or 1/88672 of the input frequency (3.58MHz to 60Hz or 4.43MHz to 50Hz).
Features:
D Makes Possible a Crystal Oscillator Circuit
D Capable of Handling Small−Amplitude Input Signals as low as 0.3Vpp
D Frequency−Dividing Ratio Selected Through Terminal N
D Reset Function
D Produces a Shaped−Waveform Output of the same Frequency as the Input Signal or Oscilla-
tion Output
D Derives a Vertial Scanning Frequency from TV Color Subcarrier
Applications:
D Frequency Divider for VTR
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3V to 9V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS ≤ VI ≤ VDD
Power Dissipation (TA = +25°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250W
Operating Free−Air Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C
Recommended Operating Conditions: (TA = −30° to +70°C, unless otherwise specified)
Parameter
Symbol
Min
Typ Max
Supply Voltage
Supply Voltage
VDD
4.75
VSS
−
−
8.5
0
−
High−Level Input Voltage
VIH
VDD to 0.5
Low−Level Input Voltage
VIL
−
−
0.5
Oscillation Input Amplitude Voltage
VI
0.3
−
−
Input requency with the terminal N in High−Level
f
−
3.58 5.5
Input requency with the terminal N in Low−Level
f
−
4.43 5.5
Unit
V
V
V
V
VPP
MHz
MHz
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