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參數(shù)資料
| 型號： | STV5342 |
| 廠商： | 意法半導體 |
| 英文描述： | TELETEXT DECODER WITH 4 INTERGATED PAGES |
| 中文描述： | 圖文電視解碼器，4 INTERGATED頁 |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 448K |
| 代理商： | STV5342 |
ELECTRICALCHARACTERISTICS
(continued)
V
DD
= 5V, V
SS
= 0V, T
A
= - 20 to +70
o
C
Symbol
Parameter
Min
Typ
Max
Unit
TIMING
SERIALBUS (referred to V
IH
= 3V,V
IL
= 1.5V) (see Fig. 6)
Low Period Clock
High Period Clock
t
LOW
t
HIGH
t
SU , DAT
t
HD , DAT
t
SU
, s
TO
t
BUF
t
HD , STA
t
SU , STA
4
4
-
-
-
-
μ
s
μ
s
ns
ns
μ
s
μ
s
μ
s
μ
s
Data Set-up Time
Data Hold Time
Stop Set-up Time from Clock High
Start Set-upTime Following a Stop
Start Hold Time
250
170
4
4
4
-
-
-
-
-
-
-
-
-
-
Start Set-upTime Following Clock Low to High Transition
4
-
-
5
6
9
7
character display clock input
to timing chain
teletext clock input
to data acquistion circuit
teletext data input
to data acquisition circuit
clamping pulses from timing circuit
from time 4
μ
s to 8
μ
s of each television
line to maintain correct D.C. level
followingexternal A.C. coupling
F6, TTC, TTD INPUT CIRCUITRY
INPUT WAVEFORMPARAMETERS
shadedregions equal in area
V
0
t
50%
duty cycle
level
V
P
V
I(p-p)
V
P
F6
TTC
TTD
C
EXT
5
Figure1 :
F6, TTC, TTD Input InternalConnections
144ns typ.
t
CY
40ns min. 40ns min.
t
DH
t
DS
80ns max.
t
r
t
f
80ns max.
10%
90%
90%
10%
Data Stable
Data Stable
data may change
data may change
data may change
TTC
TTD
5
Data Stable : 1 if
≥
2V , 0 if
≤
0.8V
Figure 2 :
TeletextData Input Timing
STV5342
6/20
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相關代理商/技術參數(shù) |
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| STV5345 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TELETEXT DECODER WITH 8 INTEGRATED PAGES |
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| STV5345T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TELETEXT DECODER WITH 8 INTEGRATED PAGES |
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