HT9200A_13 Datasheet, PDF (1/13 Pages) Holtek Semiconductor Inc – DTMF Generators

HT9200A/HT9200B
DTMF Generators
Features
· Operating voltage: 2.0V~5.5V
· Serial mode for the HT9200A
· Serial/parallel mode for the HT9200B
· Low standby current
· Low total harmonic distortion
· 3.58MHz crystal or ceramic resonator
· HT9200A: 8-pin DIP/SOP package
HT9200B: 14-pin SOP package
General Description
The HT9200A/B tone generators are designed for MCU
interfaces. They can be instructed by a MCU to gener-
ate 16 dual tones and 8 single tones from the DTMF pin.
The HT9200A provides a serial mode whereas the
HT9200B contains a selectable serial/parallel mode in-
terface for various applications such as security sys-
tems, home automation, remote control through
telephone lines, communication systems, etc.
Selection Table
Function
Part No.
HT9200A
HT9200B
Operating
Voltage
2V~5.5V
2V~5.5V
OSC
Frequency
3.58MHz
3.58MHz
Interface
Serial
Serial/Parallel
Package
8 DIP/SOP
14 SOP
Block Diagram
X1
3 .5 8 M H z
C r y s ta l/R e s o n a to r
X2
O s c illa to r
D TM F
G e n e ra to r
D TM F
D ATA
C LK
S e r ia l D a ta
In p u t C ir c u it
C o n tro l
C ir c u it
P a r a lle lD a t a
In p u tC ir c u it
C E S /P
D3 D2 D1 D0
Rev. 1.50
1
April 29, 2013