参数资料
| 型号： | MC100E136FNG |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC COUNTER U/D 6BIT UNIV 28-PLCC |
| 产品变化通告： | Dimensional change 21/Oct/2008 |
| 标准包装： | 37 |
| 系列： | 100E |
| 逻辑类型： | 二进制计数器 |
| 方向： | 上，下 |
| 元件数： | 1 |
| 每个元件的位元数： | 6 |
| 复位： | 异步 |
| 计时： | 同步 |
| 计数速率： | 650MHz |
| 触发器类型： | 正边沿 |
| 电源电压： | 4.2 V ~ 5.7 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC100E136FNR2 | 功能描述:计数器移位寄存器 5V ECL 6-Bit Up/Down RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
| MC100E136FNR2G | 功能描述:计数器移位寄存器 5V ECL 6-Bit Up/Down Counter RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
| MC100E137 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:8-BIT RIPPLE COUNTER |
| MC100E137FN | 功能描述:计数器移位寄存器 5V ECL 8-Bit Up/Down RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
| MC100E137FNG | 功能描述:计数器移位寄存器 5V ECL 8-Bit Up/Down Counter RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
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