參數資料
| 型號： | MC100E136FNG |
| 廠商： | ON Semiconductor |
| 文件頁數： | 12/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COUNTER U/D 6BIT UNIV 28-PLCC |
| 產品變化通告： | Dimensional change 21/Oct/2008 |
| 標準包裝： | 37 |
| 系列： | 100E |
| 邏輯類型： | 二進制計數器 |
| 方向： | 上，下 |
| 元件數： | 1 |
| 每個元件的位元數： | 6 |
| 復位： | 異步 |
| 計時： | 同步 |
| 計數速率： | 650MHz |
| 觸發(fā)器類型： | 正邊沿 |
| 電源電壓： | 4.2 V ~ 5.7 V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應商設備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 管件 |
MC10E136, MC100E136
http://onsemi.com
9
Figure 6. Programmable Divider Waveforms
S1
COUT
CLOCK
DIVIDE BY 37
LOAD
000000
000001
000010
000011
100010
100011
100100
LOAD
The exercise of building a programmable divider then
becomes simply determining what value to load into the
counter to accomplish the desired division. Since the load
operation requires a clock pulse, to divide by N, N1 must
be loaded into the counter. A single E136 device is capable
of divide ratios of 2 to 64 inclusive, Table 1 outlines the load
values for the various divide ratios. Figure 4 presents the
waveforms resulting from a divide by 37 operation. Note
that the availability of the COUT complementary output
COUT allows the user to choose the polarity of the divide by
output.
For single device programmable counters the E016
counter is probably a better choice than the E136. The E016
has an internal feedback to control the reloading of the
counter, this not only simplifies board design but also will
result in a faster maximum count frequency.
For programmable dividers of larger than 8 bits the
superiority of the E016 diminishes, and in fact for very wide
dividers the E136 will provide the capability of a faster count
frequency. This potential is a result of the cascading features
mentioned previously in this document. Figure 5 shows the
architecture of a 24-bit programmable divider implemented
using E136 counters. Note the need for one external gate to
control the loading of the entire counter chain. An ideal
device for the external gating of this architecture would be
the 4-input OR function in the 8-lead SOIC ECLinPS Lite
family. However the final decision as to what device to use
for the external gating requires a balancing of performance
needs, cost and available board space. Note that because of
the need for external gating the maximum count frequency
of a given sized programmable divider will be less than that
of a single cascaded counter.
Figure 7. 24-bit Programmable Divider Architecture
S1
Q0 > Q5
D0 > D5
CLK
Q0 > Q5
D0 > D5
CLK
Q0 > Q5
D0 > D5
CLK
LSB
Q0 > Q5
D0 > D5
CLOUT
COUT
CLIN
CIN
CLK
CLOCK
“LO”
CLOUT
COUT
CLIN
CIN
CLOUT
COUT
CLIN
CIN
MSB
CLOUT
COUT
CLIN
CIN
OUT
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC100E136FNR2 | 功能描述:計數器移位寄存器 5V ECL 6-Bit Up/Down RoHS:否 制造商:Texas Instruments 計數器類型: 計數順序:Serial to Serial/Parallel 電路數量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC100E136FNR2G | 功能描述:計數器移位寄存器 5V ECL 6-Bit Up/Down Counter RoHS:否 制造商:Texas Instruments 計數器類型: 計數順序:Serial to Serial/Parallel 電路數量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC100E137 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:8-BIT RIPPLE COUNTER |
| MC100E137FN | 功能描述:計數器移位寄存器 5V ECL 8-Bit Up/Down RoHS:否 制造商:Texas Instruments 計數器類型: 計數順序:Serial to Serial/Parallel 電路數量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC100E137FNG | 功能描述:計數器移位寄存器 5V ECL 8-Bit Up/Down Counter RoHS:否 制造商:Texas Instruments 計數器類型: 計數順序:Serial to Serial/Parallel 電路數量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
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