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HT9200A Datasheet(PDF) 4 Page - Holtek Semiconductor Inc

Part # HT9200A
Description  DTMF Generators
Download  8 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9200A Datasheet(HTML) 4 Page - Holtek Semiconductor Inc

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Absolute Maximum Ratings*
Supply Voltage ................................. –0.3V to 6V
Storage Temperature................. –50
°C to 125°C
Input Voltage.................... VSS–0.3 to VDD
+0.3V
Operating Temperature............... –20
°C to 75°C
*Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-
mum Ratings” may cause substantial damage to the device. Functional operation of this
device at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
Electrical Characteristics
Ta=25
°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
VDD
Operating Voltage
2
5.5
V
IDD
Operating Current
2.5V S/P=VDD,D0~D3=VSS,
CE=VSS, No load
240
2500
µA
5.0V
950
3000
VIL
“Low” Input Voltage
VSS
0.2VDD
V
VIH
“High” Input Voltage
0.8VDD
—VDD
V
ISTB
Standby Current
2.5V S/P=VDD,CE=VDD,
No load
——
1
µA
5.0V
2
RP
Pull-high Resistance
2.5V
VOL=0V
120
180
270
k
5.0V
45
68
100
tDE
DTMF Output Delay
Time (Parallel Mode)
5V
tUP+6
tUP+8
ms
VTDC
DTMF Output DC
Level
2V~
5.5V
DTMF Output
0.45VDD
0.75VDD
V
ITOL
DTMF Sink Current
2.5V VDTMF=0.5V
–0.1
mA
VTAC
DTMF Output AC
Level
2.5V Row group, RL=5k
0.12
0.15
0.18
Vrms
ACR
Column Pre-emphasis
2.5V Row group=0dB
1
2
3
dB
RL
DTMF Output Load
2.5V tHD
–23dB
5
k
tHD
Tone Signal
Distortion
2.5V RL=5k
—–30
–23
dB
fCLK
Clock Input Rate
(Serial Mode)
100
500
kHz
tUP
Oscillator Starting
Time (When CE is low)
5.0V
The time from CE
falling edge to normal
oscillator operation
——
10
ms
fOSC
System Frequency
Crystal=3.5795MHz
3.5759
3.5795
3.5831
MHz
HT9200A/B
4
21st Aug ’98


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