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HT9020B Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

Part # HT9020B
Description  Call Progress Tone Decoder & ABR Controller
Download  12 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9020B Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VDD
Conditions
ZREF
Output Impedance
10
20
M
VIH
Logic Input High Voltage
5V
3.5
V
VIL
Logic Input Low Voltage
5V
1.5
V
IIH
Logic Input High Current
5V
VIH=5.0V
0.1
µA
IIL
Logic Input Low Current
5V
VIL=0V
–0.1
IOH
Output High Current
5V
VOH=4.5V
–0.5
mA
IOL
Output Low Current
5V
VOL=0.5V
2.0
mA
ILKH
Output Disable
Leakage Current
5V
VLKH=5.0V
0.1
µA
ILKL
5V
VLKL=0V
–0.1
µA
ISO
Pull Down Current
5V
25
35
µA
IDR
Pull Up Current
5V
25
35
µA
GDL
Detection Level
2.5V
fIN=305~640Hz
–42
–8
dBm
5.0V
–36
0
dBm
GRL
Rejection Level
5V
All frequency
–50
dBm
fROL
Rejection Out-band
Low Frequency
5V
V<0 dBm, ENV=0
200
Hz
fROH
Rejection Out-band
High Frequency
5V
V<0 dBm, ENV=0
800
Hz
tDD1
Detection Time
5V
In-band dial tone
2.1
3.32
3.0
sec
tDD2
Detection Time
5V
In-band dial tone
6.5
7.0
8.0
sec
tDB
Detection Busy Time
5V
In-band busy tone
6.8
7.5
8.2
sec
tDR
Detection Ringer Time
5V
30 Times ringback tone
(2 sec On/4 sec Off)
150
180
210
sec
tDN
Detection Time
5V
No signal
25
30.2
35
sec
tDE
Detection Enable Time
5V
0.2
30.2
35
sec
tTO
RELI, O Turn on Time
5V
80
100
120
ms
tO
ABREND Output Time
5V
80
100
120
ms
tB1
Break Time
(tB1+2.3sec)
5V
After a busy tone is detected 60.0
62.8
65.0
sec
tB2
5V
After no signal is detected
62.0
65.1
68.0
sec
RON
Transition on Resistor
5V
VRDLI=5.0V, VRDLO=0V
500
100
ROFF
Gate Output off Resistor
5V
VRDLI=0V, VRDLO=5.0V
10
M
HT9020
6
21st Aug ’98


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