HT8955A 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT8955A Datasheet PDF : 7 Pages
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HT8955A
Pin No. Pin Name I/O
13
A5
O
14
A4
O
15
A3
O
16
A2
O
17
A1
O
18
A0
O
19
RASB
O
20
WRB
O
21
DATA
I/O
22
A8
O
23
CASB
O
24
VDD
I
Internal
Connection
CMOS OUT
CMOS OUT
CMOS OUT
CMOS OUT
CMOS OUT
CMOS OUT
CMOS OUT
CMOS OUT
CMOS I/O
CMOS I/O
CMOS I/O
—
Description
Connects to DRAM A5
Connects to DRAM A4
Connects to DRAM A3
Connects to DRAM A2
Connects to DRAM A1
Connects to DRAM A0
Connects to DRAM RASB
Connects to DRAM WRB
Data I/O pin
Connects to DRAM A8
Connects to DRAM CASB
Positive power supply
Absolute Maximum Ratings*
Supply Voltage ................................. –0.3V to 6V
Input Voltage................. VSS–0.3V to VDD+0.3V
Storage Temperature................. –50°C to 125°C
Operating Temperature............... –20°C to 70°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
Symbol
Parameter
VDD
IOP
Operating Voltage
Operating Current
AV
Pre-amplifier Voltage Gain
AV
Comparator Voltage Gain
VIL
“L” Input Voltage
Test Conditions
VDD Conditions
—
—
5V
No load,
fOSC=640kHz
5V
RL>100kΩ
Open loop
5V
RL>100kΩ
Open loop
—
—
(Ta=25°C)
Min. Typ. Max. Unit
4.5 5.0 5.5 V
—
2.5
8 mA
— 2000 — V/V
— 2000 — V/V
0
— 0.3VDD V
3
5th May ’98
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