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