HT9302 Series
1-Memory/2-Memory Tone/Pulse Dialer
Patent Number: 64097, 86474, 64529, 113235 (R.O.C.)
5424740 (U.S.A.)
Features
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Universal specification
Hand-free control
Operating voltage: 2.0V~5.5V
Low standby current
Hold-line control
Pause, P®T can be saved for redialing
Lock function
Low memory retention current: 0.1mA (typ.)
Tone/pulse switchable
Resistor options
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-
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Interface with LCD driver
32 digits for redialing
M/B ratio
Flash function and flash time
Pause and P®T duration
Pulse number
32 digits for SA memory dialing
One-key redialing
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HT9302A: 18-pin DIP package
HT9302B: 22-pin SKDIP package
HT9302C: 20-pin DIP package
HT9302D: 24-pin SKDIP package
HT9302G: 16-pin DIP/NSOP packages
Pause and P®T key for PBX
4´4 keyboard matrix
3.58MHz crystal or ceramic resonator
General Description
The HT9302 series tone/pulse dialers are CMOS LSIs
for telecommunication systems. They are designed to
meet various dialing specifications through resistor op-
tion matrix.
tion, Hold-line, Hand-free and LCD dialing number
display interface, all of which are suitable for feature
phone applications. HT9302G is simpler than HT9302X
version. It provides only a redialing memory for simple
low-cost system applications.
The HT9302 series provide the pin-selected lock func-
Selection Table
Function
Part No.
Lock Function
(Pin Selection)
Hold Line
Hand Free
LCD Interface
Package
HT9302x
HT9302A
HT9302B
HT9302C
HT9302D
HT9302G
HT9302G
(Normal version)
18 DIP
Ö
Ö
Ö
Ö
¾
Ö
¾
¾
¾
Ö
22 SKDIP
20 DIP
Ö
¾
Ö
¾
24 SKDIP
Ö
(Simple version)
¾
Ö
16 DIP/NSOP
¾
¾
¾
Rev. 1.30
1
May 13, 2009