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DS2154LA2 参数 Datasheet PDF下载

DS2154LA2图片预览
型号: DS2154LA2
PDF下载: 下载PDF文件 查看货源
内容描述: [DATACOM, FRAMER, PQFP100, 14 X 14 MM, 1.40 MM HEIGHT, LQFP-100]
分类和应用:
文件页数/大小: 90 页 / 1731 K
品牌: ROCHESTER [ Rochester Electronics ]
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DS2154  
16 AC CHARACTERISTICS  
Table 16-1. AC Characteristics—Multiplexed Parallel Port (MUX = 1)  
(VDD = 5V ±5%, TA = 0°C to +70°C for DS2154L, TA = -40°C to +85°C for DS2154LN.)  
(See Figure 16-1, Figure 16-2, and Figure 16-3.)  
PARAMETER  
SYMBOL MIN TYP MAX UNITS NOTES  
Cycle Time  
tCYC  
PWEL  
PWEH  
tR, tF  
tRWH  
tRWS  
200  
100  
100  
ns  
ns  
ns  
ns  
ns  
Pulse Width, DS Low or RD High  
Pulse Width, DS High or RD Low  
Input Rise/Fall Times  
R/ W Hold Time  
R/ W Setup Time Before DS High  
CS Setup Time Before DS, WR or RD  
20  
50  
10  
50  
ns  
tCS  
20  
ns  
active  
tCH  
tDHR  
tDHW  
tASL  
tAHL  
0
10  
0
ns  
ns  
ns  
ns  
ns  
CS Hold Time  
Read Data Hold Time  
Write Data Hold Time  
Muxed Address Valid to AS or ALE Fall  
Muxed Address Hold Time  
15  
10  
Delay Time, DS, WR or RD to AS or ALE  
tASD  
20  
ns  
Rise  
Pulse Width AS or ALE High  
Delay Time, AS or ALE to DS, WR or RD  
Output Data Delay Time from DS or RD  
Data Setup Time  
PWASH  
tASED  
tDDR  
30  
10  
20  
50  
ns  
ns  
ns  
ns  
80  
tDSW  
Figure 16-1. Intel Bus Read AC Timing (BTS = 0/MUX = 1)  
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