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參數(shù)資料
| 型號(hào)： | PCD4440T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Analog voice scrambler/descrambler |
| 中文描述： | TELECOM, CORDLESS, SCRAMBLER/DESCRAMBLER, PDSO8 |
| 封裝： | 7.50 MM, PLASTIC, SOT-176-1, SOP-8 |
| 文件頁(yè)數(shù)： | 12/20頁(yè) |
| 文件大?。?/td> | 105K |
| 代理商： | PCD4440T |
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1996 Dec 20
12
Philips Semiconductors
Product specification
Analog voice scrambler/descrambler
PCD4440T
Table 2
Explanation of time symbols used in Fig.10
SYMBOL
PARAMETER
DESCRIPTION
MIN.
MAX.
UNITS
f
SCL
t
SW
t
BUF
SCL clock frequency
tolerable pulse spike width
bus free time
0
4.7
100
100
kHz
ns
μ
s
The time that the bus is free (SDA is HIGH)
before a new transmission is initiated by
SDA going LOW.
Only valid for repeated start code.
The time between SDA going LOW and the
first valid negative-going transition of SCL.
The LOW period of the SCL clock.
The HIGH period of the SCL clock.
t
SU;STA
t
HD;STA
set-up time repeated START
hold time START condition
4.7
4.0
μ
s
μ
s
t
LOW
t
HIGH
t
r
t
f
t
SU;DAT
t
HD;DAT
t
SU;STO
SCL LOW time
SCL HIGH time
rise time SDA and SCL
fall time SDA and SCL
data set-up time
data hold time
set-up time STOP condition
4.7
4.0
250
0
4.0
1.0
0.3
μ
s
μ
s
μ
s
μ
s
ns
ns
μ
s
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