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HT93214A Datasheet

  • HT93214A

  • 1-memory Tone/Pulse Dialer

  • 194.09KB

  • 16頁

  • HOLTEK

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HT93214 Series
1-memory Tone/Pulse Dialer
Features
路
Operating Voltage: 2.0V~5.5V
路
Low standby current
路
Low memory retention current: 0.1mA (Typ.)
路
Tone/Pulse switchable
路
32 (pulse)/31 (tone) digits for redialing
路
Pause and P
廬
T key for PBX
路
4麓4 keyboard matrix
路
3.58MHz crystal or ceramic resonator
路
Hand-free control
Patent Number: 86474, 84545(R.O.C)
路
Pause, P
廬
T can be saved for redialing
路
One-key redialing
路
Keytone output
路
Pause time: 2.2s
路
Cascadable manual dialing after redialing
路
Calibrated DTMF timing for redialing
路
HT93214A: 16-pin DIP package
HT93214B/AT: 18-pin DIP package
General Description
The HT93214 are dialer series designed for low cost
telephone set applications with expandable features
such as Lock function, keytone and LCD display inter-
face. With a 4麓4 keyboard, it performs normal
tone/pulse switchable dialing, and provides one-key
redialing function with a 32-digit memory for speed dial-
ing. An on-chip oscillator is built-in to work with an exter-
nal 3.58Mhz crystal or ceramic resonator for accurate
timing. The HT93214 provides 300ms (F1 key) and
600ms (F2 key) of flash time; Tone dialing and 10pps,
20pps selection with 1/2 M/B ratio for pulse dialing.
Selection Table
HT93214 series
Function Hand-
Free
Part No.
HT93214A
HT93214B
HT93214AT
脰
脰
Key
Tone
Flash
Control
Control
Control
Flash
Time
(ms)
300/600
300/600
300/600
Inter
Tone
Pulse
Tone
Duration
No.
Pause (ms)
(ms)
N
N
N
94
94
94
96
96
96
PPS
10/20
10/20
10/20
M/B
1/2
1/2
1/2
PKG
DIP
300mil
16
18
18
Rev. 1.10
1
October 2, 2002

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