NTE1745
Integrated Circuit
High Speed Divider 1/20, 1/100 for VCR
Description:
The NTE1745 is a semiconductor integrated circuit in an 8鈥揕ead SIP type package consisting of a
built鈥搃n 1/20 and 1/100 high鈥搒peed frequency divider featuring an ECL circuit configuration.
Features:
D
High鈥揝peed Operation (f
max
= 130MHz)
D
Operation at Low Input Amplitudes (180mV
p鈥損
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 T
I
input pin, 1/20鈥揹ivided output is produced when the division ratio selection input
pin (M) is low鈥搇evel or a 1/100鈥揹ivided output is produced when the division ratio selection input pin
(M) is high鈥搇evel. The output (T
O
) is available in the TTL level open collector format.
Absolute Maximum Ratings:
(T
A
= 鈥?0擄 to +75擄C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V
Input Signal Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V
p鈥損
Output Signal Voltage, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Power Dissipation (T
A
= +25擄C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.33W
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +75擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +125擄C
1
2
