参数资料
| 型号： | SY100E136JZ TR |
| 厂商： | Micrel Inc |
| 文件页数： | 8/9页 |
| 文件大小： | 0K |
| 描述： | IC COUNTER UP/DOWN 6BIT 28-PLCC |
| 标准包装： | 750 |
| 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 ~ 5.5 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 |
| 包装： | 带卷 (TR) |
| 其它名称： | SY100E136JZTR SY100E136JZTR-ND |
8
SY10E136
SY100E136
Micrel, Inc.
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
Figure 4. Programmable Divider Waveforms
Figure 5. 24-bit Programmable Divider Architecture
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, N-1 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 complimentary 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
benefits of the E016 diminishes and, in fact, for very wide
dividers, the E136 will provide the capability of a faster
count frequency. 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 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.
CLOCK
COUT
S1
LOAD
100100
100011
000011
000010
000001
000000
LOAD
DIVIDE BY 37
CLK
CIN
CLIN
CLOCK
"LO"
LSB
Q0 – Q5
D0 – D5
"LO"
Q0 – Q5
D0 – D5
Q0 – Q5
D0 – D5
MSB
Q0 – Q5
D0 – D5
S1
CLK
S1
COUT
CLOUT
CIN
CLIN
COUT
CLOUT
CIN
CLIN
COUT
CLOUT
CIN
CLIN
COUT
CLOUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SY100E137 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:8-BIT RIPPLE COUNTER |
| SY100E137JC | 功能描述:IC COUNTER RIPPLE 8-BIT 28-PLCC RoHS:否 类别:集成电路 (IC) >> 逻辑 -计数器，除法器 系列:100E 产品变化通告:1Q2012 Discontinuation 30/Mar/2012 标准包装:2,500 系列:74HC 逻辑类型:二进制计数器 方向:上 元件数:1 每个元件的位元数:12 复位:异步 计时:- 计数速率:50MHz 触发器类型:负边沿 电源电压:2 V ~ 6 V 工作温度:-55°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| SY100E137JCTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:8-BIT RIPPLE COUNTER |
| SY100E137JZ | 功能描述:计数器移位寄存器 8-bit Ripple 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 |
| SY100E137JZ TR | 功能描述:计数器移位寄存器 8-bit Ripple 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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