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參數(shù)資料
| 型號(hào)： | MC14568BD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Phase Comparator and Programmable Counters |
| 中文描述： | 4000/14000/40000 SERIES, ASYN POSITIVE EDGE TRIGGERED UP DIVIDE BY N COUNTER, PDSO16 |
| 封裝： | PLASTIC, SOIC-16 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 323K |
| 代理商： | MC14568BD |
MOTOROLA CMOS LOGIC DATA
MC14568B
8
If used in cascade with the programmable divide–by–N
counter, practically all usual reference frequencies, or chan-
nel spacings of 25, 20, 12.5, 10, 6.25 kHz, etc. are easily
achievable.
PROGRAMMABLE DIVIDE–BY–N
4–BIT COUNTER (D2)
This counter is programmable by using inputs DP0 ... DP3
(pins 7 ... 4). The Preset Enable input enables the parallel
preset inputs DP0... DP3. The “0” output must be externally
connected to the PE input for single stage applications.
Since there is not a cascade feedback input, this counter,
when cascaded, must be used as the most significant digit.
Because of this, it can be cascaded with binary counters as
well as with BCD counters (MC14569B, MC14522B,
MC14526B).
TYPICAL APPLICATIONS
Figure 6. Cascading MC14568B and MC14522B or MC14526B with MC14569B
fin
CF
C
MC14569B
ZERO DETECT
CF
C
MC14522B
OR
MC14526B
Q4
PE
“0”
CF
C
MC14522B
OR
MC14526B
Q4
PE
“0”
Q1/C2
PE
“0”
MC14568B
LSD
MSD
fout
DP0 – – – – – – DP3
DP0 – – – – – – DP3
DP0 – – – – – – DP3
Figure 7. Frequency Synthesizer with MC14568B and MC14569B Using a Mixer
(Channel Spacing 10 kHz)
Frequencies shown in parenthesis are given as an example.
(40 kHz)
VSS
PE
DP0 – – – – DP3
PCin
C1
CTI
“0”
PCout
G
F
Q1/C2
VSS
VSS
VCO
fout
(144 – 146 MHz)
VDD
MC14011
CF
Q
ZERO DETECT
C
CRYSTAL
OSCILLATOR
2 k
2M
MC14568B
MC14569B
MIXER
(143.5 MHz)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC14569BCL | 制造商:Motorola Inc 功能描述: |
| MC14569BCP | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Divide-By-N RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14569BCPG | 功能描述:計(jì)數(shù)器移位寄存器 3-18V Divide-By-N Dual 4-Bit Binary RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14569BCPG | 制造商:ON Semiconductor 功能描述:Package/Case:16-PDIP |
| MC14569BDW | 功能描述:計(jì)數(shù)器 IC 3-18V Divide-By-N RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
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