NTE1690中文資料NTE數(shù)據(jù)手冊PDF規(guī)格書
NTE1690規(guī)格書詳情
Description:
The NTE1690 is a low threshold voltage, field–implanted, metal gate CMOS integrated circuit in a 16–Lead DIP type package. This device interfaces directly to a standard telephone keypad and generates all dual tone multi–frequency pairs required in tone dialing systems. The tone synthesizers are locked to an on–chip reference oscillator using an inexpensive 3.579545MHz crystal for high tone accuracy. The crystal and an output load resistor are the only external components required for tone generation. A MUTE OUT logic signal, which changes state when any key is depressed is also provided.
Features:
? 3V to 10V Operation When Generating Tones
? 2V Operation of Keyscan and MUTE Logic
? Static Sensing of Key Closures or Logic Inputs
? On–Chip 3.579545MHz Crystal–Controlled Oscillator
? Output Amplitudes Proportional to Supply Voltage
? High Group Pre–Emphasis
? Low Harmonic Distortion
? Open Emitter–Follower Low–Impedance Output
? SINGLE TONE INHIBIT Pin
產(chǎn)品屬性
- 型號：
NTE1690
- 制造商：
NTE Electronics
- 功能描述：
IC-TELEPHONE DTMF DIALER
- 功能描述：
Bulk
- 功能描述：
DIP-16 DTMF DIALER
- 功能描述：
IC, TELEPHONE DTMF DIALER, DIP-16; IC
- Function：
Telephone DTMF Dialer; Brief
- Features：
High Group Pre Emphasis, Low Harmonic Distortion, Open Emitter Follower Low Impedance Output; Supply Voltage
- Min：
3V; Supply Voltage
- Max：
10V ;RoHS
- Compliant：
Yes
- 功能描述：
Telephone DTMF Dialer 16-Pin PDIP
