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參數資料
| 型號： | MC145026 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Encoder and Decoder Pairs |
| 中文描述： | 編碼器和解碼器雙 |
| 文件頁數： | 14/20頁 |
| 文件大?。?/td> | 233K |
| 代理商： | MC145026 |
MC145026
MC145027
MC145028
SC41343
SC41344
14
MOTOROLA
MC145027 AND MC145028 TIMING
To verify the MC145027 or MC145028 timing, check the
waveforms on C1 (Pin 7) and R2/C2 (Pin 10) as compared to
the incoming data waveform on Din (Pin 9).
The R–C decay seen on C1 discharges down to 1/3 VDD
before being reset to VDD. This point of reset (labelled “DOS”
in Figure 15) is the point in time where the decision is made
whether the data seen on Din is a 1 or 0. DOS should not be
too close to the Din data edges or intermittent operation may
occur.
The other timing to be checked on the MC145027 and
MC145028 is on R2/C2 (see Figure 16). The R–C decay is
continually reset to VDD as data is being transmitted. Only
between words and after the end–of–transmission (EOT)
does R2/C2 decay significantly from VDD. R2/C2 can be used
to identify the internal end–of–word (EOW) timing edge which
is generated when R2/C2 decays to 2/3 VDD. The internal
EOT timing edge occurs when R2/C2 decays to 1/3 VDD.
When the waveform is being observed, the R–C decay
should go down between the 2/3 and 1/3 VDD levels, but not
too close to either level before data transmission on Din re-
sumes.
Verification of the timing described above should ensure a
good match between the MC145026 transmitter and the
MC145027 and MC145028 receivers.
VDD
0 V
Din
VDD
2/3
1/3
0 V
C1
DOS
DOS
Figure 15. R–C Decay on Pin 7 (C1)
VDD
2/3
1/3
0 V
R2/C2
EOT
Figure 16. R–C Decay on Pin 10 (R2/C2)
EOW
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相關代理商/技術參數 |
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|---|---|
| MC145026D | 功能描述:鎖相環(huán) - PLL Encoder RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| MC145026DR2 | 功能描述:IC ENCODER 9 LINE SMPLX 16-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:4000 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| MC145026P | 功能描述:IC ENCODER 9LINE SIMPLEX 16-DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:4000 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| MC145027DW | 功能描述:鎖相環(huán) - PLL Decoder RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| MC145027DWR2 | 功能描述:IC DECODER 5 ADDR 4 DATA 16-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:4000 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
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