-40%
ECG1690 Telephone DTMF Dialer ~ 16 Pin DIP (NTE1690)
$ 3.16
- Description
- Size Guide
Description
The ECG1690 is a monolithic integrated circuit in a 16−Lead DIP type package fabricated using CMOS process and is designed specifically for integrated tone dialer applications.Features:
High Accuracy Tones
Digital Divider Logic, Resistive Ladder Network and CMOS Operational Amplifier on a Single Chip
Uses Inexpensive 3.579545MHz Television Color Burst Crystal
Invalid Key Entry Can Result in Either Single Tone or No Tone
Tone Disable Allows Any Key Down Output to Function from Keyboard Input Without Generating Tones
Functions:
Fixed Supply Operation
Negative−True Keyboard Input
Tone Disable Input
Stable−Output Level
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VDD: 10.5V
Any Input Relative to VDD (Except Pin10), VN: 0.3V
Any Input Relative to GND (Except Pin10), VN: −0.3V
Power Dissipation, PD: 500mW
Operating Temperature Range, Topr: −30° to +60°C
Storage Temperature Range, Tstg: −55° to +150°C