DTMF GENERATOR

The MV5089 is fabricated using ISO-CMOS high density technology and offers low power and wide voltage operation. An inexpensive 3.58MHz TV crystal completes the reference oscillator. From this frequency are derived 8 different sinusoidal frequencies which, when appropriately mixed, provide Dual-Tone Multi-Frequency (DTMF) tones.

FEATURES

■ Pin-for-Pin Replacement for MK5089

■ Low Standby Power

■ Minimum External Parts Count

■ 2.75V to 10V Operatlon

■ 2-of-8 Keyboard Input

■ High Accuracy Tones Provided by 3.58MHz Crystal Oscillator

■ Pin-Selectable Inhibit of Single Tone Generation

APPLICATIONS

DTMF Signalling for

■ Telephone Sets

■ Mobile Radio

■ Remote Control

■ Point-of-Sale and Banking Terminals

■ Process Control