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HT9170 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

Part # HT9170
Description  DTMF Receiver
Download  12 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9170 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VDD
Conditions
RL
Load Resistance (GS)
5V
¾¾
50
¾
kW
CL
Load Capacitance (GS)
5V
¾¾
100
¾
pF
VCM
Common Mode Range
5V No load
¾
3.0
¾
VPP
Steering Control
tDP
Tone Present Detection Time
5
16
22
ms
tDA
Tone Absent Detection Time
¾
4
8.5
ms
tACC
Acceptable Tone Duration
¾¾
42
ms
tREJ
Rejected Tone Duration
20
¾¾
ms
tIA
Acceptable Inter-digit Pause
¾¾
42
ms
tIR
Rejected Inter-digit Pause
20
¾¾
ms
tPDO
Propagation Delay
(RT/GT to DO)
¾
811
ms
tPDV
Propagation Delay
(RT/GT to DV)
¾
12
¾ms
tDOV
Output Data Set Up (DO to DV)
¾
4.5
¾ms
tDDO
Disable Delay (OE to DO)
¾
300
¾
ns
tEDO
Enable Delay (OE to DO)
¾
50
60
ns
Note: DO=D0~D3
HT9170
6
December 20, 1999
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
VD D
RT / G T
ES T
DV
D3
D2
D1
D0
OE
VP
VN
GS
VR EF
(I N H )
(P W D N )
X1
X2
VSS
HT 9 1 7 0 / B/ D
0. 1 m F
300k W
V DD
VS S
3. 579545M H z
100k W
100k W
0. 1 m F
T one
20p F
20p F
Figure 1. Test circuit


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