Pulse Output Logic 鈥?鈥?/div>
D
RC Oscillation for Reference Frequency
D
Designed to Operate Directly from the Telephone Line
D
Used CMOS Technology for Low Voltage, Low Power Operation
D
Power Up Clear Circuitry
D
NTE1691 Pin2: V
REF
D
NTE1692 Pin2: Tone Out
Features:
D
Uses Either a Standard 2 of 7 Matrix Keyboard with Negative True Common or the Inexpensive
Form A鈥揟ype Keyboard
D
Make/Break Ratio Can Be Selected
D
Redial with * or #
D
Tone Signal Output or On鈥揅hip Reference Voltage by Bonding Option on Chip
D
10pps/20pps Can be Selected
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
DC Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2V
Voltage on Any Pin, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
CC
+0.3, GND鈥?.3V
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +60擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C