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參數(shù)資料
| 型號(hào)： | HT9033 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | CAS Tone Detector |
| 中文描述： | 中科院音調(diào)檢測(cè)器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 101K |
| 代理商： | HT9033 |
Pin Description
Pin Name
I/O
Description
TIP
I
This pin is connected to the tip side of the twisted pair wires.
RING
I
This pin is connected to the ring side of the twisted pair wires.
OPO
O
Output of OP AMP
VREF
O
Reference voltage output, normally 1/2 V
DD
.
X1
I
A crystal or ceramic resonator should be connected to this pin and X2.
This pin may be driven from an external clock source.
X2
O
A crystal or ceramic resonator should be connected to this pin and X1.
DO
O
CAS detection output. Active high.
PDWN
I
A logic 1 on this pin puts the chip in power down mode. When a logic 0 is on this pin, the chip
in power up mode. This is a Schmitt trigger input.
VDD
Positive power
VSS
Negative power, ground
AVDD
Analog positive power
AVSS
Analog negative power
NC
No connection
Absolute Maximum Ratings
Voltages are referenced to V
SS
, except where noted.
Supply Voltage......................................... 0.5V to 6.0V
All Input Voltages.................................................25mW
Operating Temperature Range ...................0 C to 70 C
Storage Temperature Range ................ 40 C to 150 C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum 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 reliabil-
ity.
D.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD
Supply Voltage
3.5
5.5
V
I
DD
Operating Current
5V
PDWN=0,3.58MHzon
2.5
3
mA
I
STBY
Standby Current
5V
PDWN=1,3.58MHzoff
1
2
A
V
IL
Low Input Voltage
5V
0.3
V
DD
V
IH
High Input Voltage
5V
0.7
V
DD
I
OL
Output Source Current (DO)
5V
V
OL
=0.1V
DD
0.8
mA
I
OH
Output Sink Current (DO)
5V
V
OH
=0.9V
DD
0.3
mA
f
SYS
System Clock
3.58
MHz
HT9033
Rev. 1.00
2
May 22, 2006
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