
NTE1693
Integrated Circuit
Telephone Pulse Dialer (CMOS)
Description:
The NTE1693 is a CMOS LSI pulse dialer in a 16–Lead DIP type package with redial which integrates
a ceramic resonator as a frequency reference.
Features:
Make Ratio: 33/39% Pin–Selectable.
Pulse Output: “1” True
Mute Output: “0” True
17–Digit Redial with either * or # Input
Uses a Ceramic Oscillator as a Frequency Reference
Direct Telephone Line Operation
Uses either a Standard 2–of–7 Matrix Keyboard or a Single Contact Keyboard
Mute Signal Generated on Pulse Signal
Absolute Maximum Ratings:
Supply Voltage (Note 1), V
DD
Maximum Pin Voltage
V
IN1
(Note 2)
V
IN2
(Note 3)
Maximum Power Dissipation (T
A
= +25
°
C), P
D
Operating Temperature Range, T
opr
Storage Temperature Range, T
stg
Note 1. Referenced to GND
Note 2. The maximum applicable voltage or any pin with respect to GND
Note 3. The maximum applicable voltage on any pin with respect to V
DD
–0.3 to +6.2V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.3V
+0.3V
500mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–30
°
to +60
°
C
–55
°
to +150
°
C
Recommended Operating Conditions:
Supply Voltage, V
DD
2.5 to 6.0V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .