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PDF HT9200B Data sheet ( Hoja de datos )
| Número de pieza | HT9200B | |
| Descripción | DTMF Generators | |
| Fabricantes | Holtek Semiconductor Inc | |
| Logotipo |  |
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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
X 1 3 .5 8 M H z
C r y s ta l/R e s o n a to r
X 2 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
1 page  
HT9200A/HT9200B
Functional Description
The HT9200A/B are DTMF generators for MCU inter-
faces. They are controlled by a MCU in the serial mode
or the parallel mode (for the HT9200B only).
Serial mode (HT9200A/B)
The HT9200A/B employ a data input, a 5-bit code, and a
synchronous clock to transmit a DTMF signal. Every
digit of a phone number to be transmitted is selected by
a series of inputs which consist of 5-bit data. Of the 5
bits, the D0(LSB) is the first received bit. The
HT9200A/B will latch data on the falling edge of the
clock (CLK pin). The relationship between the digital
codes and the tone output frequency is shown in Table
1. As for the control timing diagram, refer to Figure 1.
When the system is operating in the serial mode a
pull-high resistor is attached to D0~D3 (for parallel
mode) on the input terminal.
Table 1: Digits vs. input data vs. tone output frequency (serial mode)
Digit
D4
D3
D2
D1
1000
2000
3000
4001
5001
6001
7001
8010
9010
0010
*010
#011
A011
B011
C0 1 1
D0 0 0
¾1 0 0
¾1 0 0
¾1 0 0
¾1 0 0
¾1 0 1
¾1 0 1
¾1 0 1
¾1 0 1
DTMF OFF
1
1
1
Note: The codes not listed in Table 1 are not used D4 is MSB
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
1
0
0
1
1
1
D0
Tone Output
Frequency (Hz)
1 697+1209
0 697+1336
1 697+1477
0 770+1209
1 770+1336
0 770+1477
1 852+1209
0 852+1336
1 852+1477
0 941+1336
1 941+1209
0 941+1477
1 697+1633
0 770+1633
1 852+1633
0 941+1633
0 697
1 770
0 852
1 941
0 1209
1 1336
0 1477
1 1633
1¾
Rev. 1.50
5 April 29, 2013
5 Page 
8-pin SOP (150mil) Outline Dimensions
8
A
1
5
B
4
C
C'
D
EF
· MS-012
Symbol
A
B
C
C¢
D
E
F
G
H
a
Symbol
A
B
C
C¢
D
E
F
G
H
a
Min.
0.228
0.150
0.012
0.188
¾
¾
0.004
0.016
0.007
0°
Min.
5.79
3.81
0.30
4.78
¾
¾
0.10
0.41
0.18
0°
HT9200A/HT9200B
G
H
=
Dimensions in inch
Nom.
¾
¾
¾
¾
¾
0.050
¾
¾
¾
¾
Dimensions in mm
Nom.
¾
¾
¾
¾
¾
1.27
¾
¾
¾
¾
Max.
0.244
0.157
0.020
0.197
0.069
¾
0.010
0.050
0.010
8°
Max.
6.20
3.99
0.51
5.00
1.75
¾
0.25
1.27
0.25
8°
Rev. 1.50
11 April 29, 2013
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet HT9200B.PDF ] | |
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