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74LS85 参数 Datasheet PDF下载

74LS85图片预览
型号: 74LS85
PDF下载: 下载PDF文件 查看货源
内容描述: 4位数值比较器 [4-Bit Magnitude Comparator]
分类和应用: 比较器
文件页数/大小: 6 页 / 62 K
品牌: FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
 浏览型号74LS85的Datasheet PDF文件第1页浏览型号74LS85的Datasheet PDF文件第2页浏览型号74LS85的Datasheet PDF文件第3页浏览型号74LS85的Datasheet PDF文件第5页浏览型号74LS85的Datasheet PDF文件第6页  
Switching Characteristics  
at VCC = 5V and T = 25°C  
A
R
= 2 kΩ  
From  
Input  
To  
Number of  
L
Symbol  
Parameter  
Output Gate Levels  
C
= 15 pF  
C
= 50 pF  
Units  
L
L
Min  
Max  
36  
Min  
Max  
t
t
Propagation Delay Time  
Any A or B  
Data Input  
A < B,  
3
PLH  
42  
40  
40  
40  
26  
LOW-to-HIGH Level Output  
A > B  
ns  
ns  
A = B  
A < B,  
A > B  
A = B  
4
3
4
1
40  
Propagation Delay Time  
Any A or B  
Data Input  
PHL  
30  
HIGH-to-LOW Level Output  
30  
t
t
t
t
t
t
Propagation Delay Time  
LOW-to-HIGH Level Output  
Propagation Delay Time  
HIGH-to-LOW Level Output  
Propagation Delay Time  
LOW-to-HIGH Level Output  
Propagation Delay Time  
HIGH-to-LOW Level Output  
Propagation Delay Time  
LOW-to-HIGH Level Output  
Propagation Delay Time  
HIGH-to-LOW Level Output  
PLH  
PHL  
PLH  
PHL  
PLH  
PHL  
A < B or A = B  
A < B or A = B  
A = B  
A > B  
A > B  
A = B  
A = B  
A < B  
A < B  
22  
ns  
ns  
ns  
ns  
ns  
ns  
1
2
2
1
1
17  
20  
17  
22  
17  
26  
25  
26  
26  
26  
A = B  
A > B or A = B  
A > B or A = B  
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