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ASM5P23S05AF-1-08-ST PDF预览

ASM5P23S05AF-1-08-ST

更新时间: 2024-11-26 22:17:47
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ALSC /
页数 文件大小 规格书
18页 382K
描述
3.3V SpreadTrak Zero Delay Buffer

ASM5P23S05AF-1-08-ST 数据手册

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ASM5P23S09A  
ASM5P23S05A  
November 2004  
rev 1.3  
3.3V ‘SpreadTrak’ Zero Delay Buffer  
General Features  
out five low-skew clocks.  
15 MHz to 133 MHz operating range, compatible  
The -1H version of the ASM5P23SxxA operates at up to  
133 MHz frequency, and has higher drive than the -1  
device. All parts have on-chip PLLs that lock to an input  
clock on the REF pin. The PLL feedback is on-chip and is  
obtained from the CLKOUT pad.  
with CPU and PCI bus frequencies.  
Zero input - output propagation delay.  
Multiple low-skew outputs.  
Output-output skew less than 250 pS.  
Device-device skew less than 700 pS.  
One input drives 9 outputs, grouped as 4+4+1  
(ASM5P23S09A).  
The ASM5P23S09A has two banks of four outputs each,  
which can be controlled by the Select inputs as shown in  
the Select Input Decoding Table. If all the output clocks are  
not required, Bank B can be three-stated. The select input  
also allows the input clock to be directly applied to the  
outputs for chip and system testing purposes.  
One input drives 5 outputs (ASM5P23S05A).  
Less than 200 pS cycle-to-cycle jitter is compatible  
with Pentium® based systems.  
Test Mode to bypass PLL (ASM5P23S09A only,  
refer Select Input Decoding Table).  
Available in 16-pin, 150-mil SOIC and 4.4 mm  
TSSOP packages for ASM5P23S09A and in  
8-pin, 150-mil SOIC and 4.4 mm TSSOP  
packages for ASM5P23S05A.  
Multiple ASM5P23S09A and ASM5P23S05A devices can  
accept the same input clock and distribute it. In this case  
the skew between the outputs of the two devices is  
guaranteed to be less than 700 pS.  
3.3V operation  
Advanced 0.35µ CMOS technology.  
‘SpreadTrak’.  
All outputs have less than 200 pS of cycle-to-cycle jitter.  
The input and output propagation delay is guaranteed to be  
less than 250 pS, and the output to output skew is  
guaranteed to be less than 250 pS.  
Functional Description  
ASM5P23S09A is a versatile, 3.3V zero-delay buffer  
designed to distribute high-speed clocks with Spread  
Spectrum capability. It is available in a 16-pin package. The  
ASM5P23S05A is the eight-pin version of the  
ASM5P23S09A. It accepts one reference input and drives  
The ASM5P23S09A and the ASM5P23S05A are available  
in two different configurations, as shown in the ordering  
information table. The ASM5P23SxxA-1 is the base part.  
The ASM5P23SxxA-1H is the high drive version of the -1  
part and its rise and fall times are much faster than -1 part.  
Block Diagram  
MUX  
CLKOUT  
CLKA1  
CLKA2  
CLKA3  
PLL  
CLKOUT  
REF  
PLL  
REF  
CLK1  
CLK2  
CLK3  
CLK4  
CLKA4  
CLKB1  
CLKB2  
CLKB3  
CLKB4  
S2  
S1  
Select Input  
Decoding  
ASM5P23S09A  
ASM5P23S05A  
Alliance Semiconductor  
2575, Augustine Drive Santa Clara, CA Tel: 408.855.4900 Fax: 408.855.4999 www.alsc.com  
Notice: The information in this document is subject to change without notice.  

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