HT9033 查看數據表（PDF） - Holtek Semiconductor
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HT9033 Datasheet PDF : 9 Pages
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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
X1
O Reference voltage output, normally 1/2 VDD.
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 ²1² on this pin puts the chip in power down mode. When a logic ²0² is on this pin, the chip
in power up mode. This is a Schmitt trigger input.
VDD
¾ Positive power
VSS
¾ Negative power, ground
AVDD
¾ Analog positive power
AVSS
¾ Analog negative power
NC
¾ No connection
Absolute Maximum Ratings
Voltages are referenced to VSS, except where noted.
Supply Voltage .........................................-0.5V to 6.0V
Operating Temperature Range ...................0°C to 70°C
All Input Voltages.................................................25mW
Storage Temperature Range ................-40°C to 150°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² 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
Symbol
Parameter
VDD
IDD
ISTBY
VIL
VIH
IOL
IOH
fSYS
Supply Voltage
Operating Current
Standby Current
²Low² Input Voltage
²High² Input Voltage
Output Source Current (DO)
Output Sink Current (DO)
System Clock
Test Conditions
VDD
Conditions
¾
¾
5V PDWN=0, 3.58MHz on
5V PDWN=1, 3.58MHz off
5V
¾
5V
¾
5V VOL=0.1VDD
5V VOH=0.9VDD
¾
¾
Ta=25°C
Min. Typ. Max. Unit
3.5
¾
5.5
V
¾
2.5
3
mA
¾
1
2
mA
¾
¾
0.3
VDD
0.7
¾
¾
VDD
¾
0.8
¾
mA
¾
-0.3
¾
mA
¾
3.58
¾
MHz
Rev. 1.00
2
May 22, 2006
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