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L10C11 PDF预览

L10C11

更新时间: 2024-09-23 22:47:27
品牌 Logo 应用领域
逻辑 - LOGIC 移位寄存器
页数 文件大小 规格书
6页 68K
描述
4/8-bit Variable Length Shift Register

L10C11 数据手册

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L10C11  
4/8-bit Variable Length Shift Register  
DEVICES INCORPORATED  
FEATURES  
DESCRIPTION  
The L10C11 is a high-speed, low  
R18’. Note that the minimum-length  
path from data inputs to outputs is R1  
to R2 to R18, consisting of three stages  
of delay.  
Variable Length 4 or 8-bit Wide  
Shift Register  
power CMOS variable length shift  
register. The L10C11 consists of two  
4-bit wide, adjustable length shift  
registers. These registers share control  
signals and a common clock. Both  
shift registers can be programmed  
together to any length from 3 to 18  
stages inclusive, or one register can be  
fixed at 18 stages of delay while the  
other is variable. The configuration  
implemented is determined by the  
Length Code (L3-0) and the MODE  
control line as shown in Table 1.  
Selectable Delay Length from 3 to  
18 Stages  
Low Power CMOS Technology  
Replaces Fairchild TMC2011  
Load, Shift, and Hold Instructions  
Separate Data In and Data Out Pins  
Package Styles Available:  
• 24-pin Plastic DIP  
The MODE input determines whether  
one or both of the internal shift  
registers have variable length. When  
MODE = 0, both D3-0 and D7-4 are  
delayed by an amount which is  
controlled by L3-0. When MODE = 1,  
the D7-4 field is delayed by 18 stages  
independent of L3-0.  
• 28-pin Plastic LCC, J-Lead  
The Length Code (L3-0) controls the  
number of stages of delay applied to  
the D inputs as shown in Table 1.  
When the Length Code is 0, the inputs  
are delayed by 3 clock periods. When  
the Length Code is 1, the delay is 4  
clock periods, and so forth. The  
Length Code and MODE inputs are  
latched on the rising edge of CLK.  
Both the Length Code and MODE  
values may be changed at any time  
without affecting the contents of  
registers R1 through R17 or R1’  
through R17.  
Each input is applied to a chain of  
registers which are clocked on the  
rising edge of the common CLK input.  
These registers are numbered R1  
through R17 and R1’ through R17,  
corresponding to the D3-0 and D7-4  
data fields respectively. A multi-  
plexer serves to route the contents of  
any of registers R2 through R17 to the  
output register, denoted R18. A  
similar multiplexer operates on the  
contents of R2’ through R17’ to load  
L10C11 BLOCK DIAGRAM  
R17  
R16  
R15  
4
4
D3-0  
Y3-0  
R4  
R3  
R2  
CLK  
4
L3-0  
MODE  
R17’  
R16’  
R15’  
4
4
D7-4  
Y7-4  
R4’  
R3’  
R2’  
Pipeline Registers  
03/27/2000–LDS.11-L  
1

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