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参数资料
| 型号： | AN-90 |
| 厂商： | Fairchild Semiconductor Corporation |
| 英文描述： | 74C Family Characteristics |
| 中文描述： | 74C条家庭特征 |
| 文件页数： | 1/7页 |
| 文件大小： | 209K |
| 代理商： | AN-90 |
74C Family Characteristics
INTRODUCTION
The purpose of this 54C/74C Family Characteristics applica-
tion note is to set down, in one place, all those characteris-
tics which are common to the devices in the MM54C/MM74C
logic family. The characteristics which can be considered to
apply are:
1.
Output voltage-current characteristics
2.
Noise characteristics
3.
Power consumption
4.
Propagation delay (speed)
5.
Temperature characteristics
With a good understanding of the above characteristics the
designer will have the necessary tools to optimize his sys-
tem.An attempt will be made to present the information in as
simple a manner as possible to facilitate its use. This
coupled with the fact that 54C/74C has the same function
and pin-out as standard series 54L/74L will make the appli-
cation of CMOS to digital systems very straightforward.
OUTPUT CHARACTERISTICS
Figure 1 and Figure 2 show typical output drain characteris-
tics for the basic inverter used in the 54C/74C family. For
more detailed information on the operation of the basic in-
verter the reader is directed to Application Note AN-77,
“CMOS, The Ideal Logic Family”. Although more complex
gates, and MSI devices, may be composed of combinations
of parallel and series transistors the considerations that gov-
ern the output characteristics of the basic inverter apply to
these more complex structures as well.
AN006021-1
(A) Typical Output Sink
Characteristic (N-Channel)
AN006021-2
(B) Typical Output Source
Characteristic (P-Channel)
FIGURE 1.
AN006021-3
(A) Typical Output Sink
Characteristic (N-Channel)
AN006021-4
(B) Typical Output Source
Characteristic (P-Channel)
FIGURE 2.
Fairchild Semiconductor
Application Note 90
August 1973
7
A
1998 Fairchild Semiconductor Corporation
AN006021
www.fairchildsemi.com
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