NTE NTE1745 Integrated circuit high speed divider 1/20, 1/100 for vcr Datasheet

NTE1745
Integrated Circuit
High Speed Divider 1/20, 1/100 for VCR
Description:
The NTE1745 is a semiconductor integrated circuit in an 8–Lead SIP type package consisting of a
built–in 1/20 and 1/100 high–speed frequency divider featuring an ECL circuit configuration.
Features:
D High–Speed Operation (fmax = 130MHz)
D Operation at Low Input Amplitudes (180mVp–p Minimum Input Amplitude)
D TTL Level Output
Applications:
FM radio prescalers, digital equipment for consumer and industrial applications
Function:
This divider is based on an ECL circuit configuration. When a frequency up to a maximum of 130MHz
is applied to the TI input pin, 1/20–divided output is produced when the division ratio selection input
pin (M) is low–level or a 1/100–divided output is produced when the division ratio selection input pin
(M) is high–level. The output (TO) is available in the TTL level open collector format.
Absolute Maximum Ratings: (TA = –10° to +75°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V
Input Signal Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5Vp–p
Output Signal Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Power Dissipation (TA = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.33W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (TA = –10° to +75°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Voltage
VCC
4.5
5
5.5
V
Low–Level Output Current
IOL
–
–
5
mA
Input Frequency
fIN
30
–
130
MHz
TA = +25°C
High Input Voltage (M Input)
VIH(M)
2.6
–
Vcc
V
Low Input Voltage (M Input)
VIL(M)
0
–
0.4
V
180
–
800
mVp–p
Input Signal Voltage
Vi
TA = +25°C
Circuit Current
ICC
VCC = 5V
–
6.5
–
mA
Low–Level Output Voltage
VOL
VCC = 4.5V, IOL = 5mA
–
–
0.5
V
Minimum Operating Frequency
fmax
VCC = 5V, TA = +25°C, VIN = 180mVp–p
130
–
–
MHz
High Input Current (M Input)
IIH(M)
VCC = 5V, VIH(M) = 2.6V
–
2
–
µA
Low Input Current (M Input)
IIL(M)
VCC = 5V, VIL(M) = 0.4V
–
0.1
–
µA
VCC = 5V, VO = 5.5V
–
–
100
µA
Output Leakage Current
IO(Leak)
Pin Connection Diagram
(Front View)
8
7
6
5
4
3
2
1
.768 (19.52) Max
To Open Collector Output
VCC
N.C.
Vref Input Reference Bias
Input (T)
Frequency Division Ratio
Selection Input (M)
N.C.
GND
.118 (3.0) Max
.264 (6.72)
Max
1
8
.165
(4.2)
Min
.100 (2.54) Typ
.700 (17.78)
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