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參數(shù)資料
| 型號： | HT8955A |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Voice Echo |
| 中文描述： | 語音回聲 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 589K |
| 代理商： | HT8955A |
Pin No. Pin Name I/O
Internal
Connection
Description
13
A5
O
CMOS OUT
Connects to DRAM A5
14
A4
O
CMOS OUT
Connects to DRAM A4
15
A3
O
CMOS OUT
Connects to DRAM A3
16
A2
O
CMOS OUT
Connects to DRAM A2
17
A1
O
CMOS OUT
Connects to DRAM A1
18
A0
O
CMOS OUT
Connects to DRAM A0
19
RASB
O
CMOS OUT
Connects to DRAM RASB
20
WRB
O
CMOS OUT
Connects to DRAM WRB
21
DATA
I/O
CMOS I/O
Data I/O pin
22
A8
O
CMOS I/O
Connects to DRAM A8
23
CASB
O
CMOS I/O
Connects to DRAM CASB
24
VDD
I
—
Positive power supply
Absolute Maximum Ratings*
Supply Voltage.................................–0.3V to 6V
Storage Temperature.................–50
°
C to 125
°
C
Operating Temperature...............–20
°
C to 70
°
C
Input Voltage................. V
SS
–0.3V to V
DD
+0.3V
*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
V
DD
Conditions
V
DD
Operating Voltage
—
—
4.5
5.0
5.5
V
I
OP
Operating Current
5V
No load,
f
OSC
=640kHz
—
2.5
8
mA
A
V
Pre-amplifier Voltage Gain
5V
R
L
>100k
Open loop
—
2000
—
V/V
A
V
Comparator Voltage Gain
5V
R
L
>100k
Open loop
—
2000
—
V/V
V
IL
“L” Input Voltage
—
—
0
—
0.3V
DD
V
HT8955A
3
5th May ’98
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| HT8970 | Voice Echo |
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| HT9015 | RF Single Chip for Cordless Phone |
| HT9020B | Call Progress Tone Detector |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT8960 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT8970 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Echo |
| HT8970(16DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT8970(16SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT8972 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Echo |
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