KS58015
DTMF DIALER FOR BINARY DATA-IN
INTRODUCTION
The KS58015 is a DTMF dialer for 4 bit binary data input from
microprocessor. When the tone enable input low, the oscillator is in-
hibited and the device is in a low power consumption at standby mode.
On the low to high transition of tone enable, data is latched into the
device and selected the standard DTMF signals.
The N-channel open drain output provides a MUTE output during tone
generation.
14-DIP-300
14-SOP-225B
FEATURES
•
Direct interface with microprocessor
•
Generates 16 standard tones
•
Uses inexpensive TV crystal or ceramic resonator
(3.579545MHz)
•
Very low total harmonic distortion
•
Low power standby mode
•
Binary data inputs with latches
•
Wide Operating Voltage : 2.5 ~ 8.0V
ORDERING INFORMATION
Device
KS58015N
KS58015D
Package
14-DIP-300
14-SOP-225B
Operating Temperature
- 30°C ~ + 70°C
BLOCK DIAGRAM
V
DD
MUTE
OSC IN
OSC
OSC OUT
MUTE LOGIC
TEN
ST
GS
D0
D1
D2
D3
DATA
LATCH &
DECODER
4
D/A
CONVER TER &
MIXING
CONTROL
CIRCUIT
ROW & COLUMN
TONE COUNTER
TONE OUT
V
S S
Fig.1