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參數資料
| 型號： | MC14521B |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 24-Stage Frequency Divider |
| 中文描述： | 24級分頻器 |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MC14521B |
MC14521B
http://onsemi.com
7
Reset
In 2
Out 2
V
SS
′
V
DD
′
Q18 thru
Q24
Counter is in three 8–stage
sections in parallel mode
Counter is reset. In 2 and
Out 2 are connected
together
1
0
0
V
DD
Gnd
0
A test function (see Figure 8) has been
included for the reduction of test time required to
exercise all 24 counter stages. This test function
divides the counter into three 8–stage sections,
and 255 counts are loaded in each of the
8–stage sections in parallel. All flip–flops are
now at a logic “1”. The counter is now returned
to the normal 24–stages in series configuration.
One more pulse is entered into Input 2 (In 2)
which will cause the counter to ripple from an all
“1” state to an all “0” state.
0
1
1
First “0” to “1” transition
on In 2, Out 2 node.
255 “0” to “1” transitions
are clocked into this In 2,
Out 2 node.
0
1
—
—
—
0
1
—
—
—
1
1
1
The 255th “0” to “1”
transition.
0
0
0
0
G d
Gnd
1
1
1
0
V
DD
1
Counter converted back to
24–stages in series mode.
Out 2 converts back to an
output.
Counter ripples from an all
“1” state to an all “0” stage.
1
0
1
0
1
0
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相關代理商/技術參數 |
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|---|---|
| MC14521BCP | 功能描述:增效器/分頻器 LOG CMOS OSILATR 24STAGE RoHS:否 制造商:Texas Instruments 產品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 |
| MC14521BCPG | 功能描述:增效器/分頻器 3-18V Resettable in RoHS:否 制造商:Texas Instruments 產品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 |
| MC14521BD | 功能描述:增效器/分頻器 LOG CMOS OSILATR 24STAGE RoHS:否 制造商:Texas Instruments 產品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 |
| MC14521BDG | 功能描述:增效器/分頻器 LOG CMOS OSILATR 24STAGE RoHS:否 制造商:Texas Instruments 產品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 |
| MC14521BDR2 | 功能描述:增效器/分頻器 LOG CMOS OSILATR 24STAGE RoHS:否 制造商:Texas Instruments 產品:Multiplier 邏輯系列: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 |
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