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参数资料
| 型号： | M54HC688D1 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 算术逻辑单元 |
| 英文描述： | HC/UH SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, CDIP20 |
| 封装： | CERAMIC, DIP-20 |
| 文件页数： | 3/10页 |
| 文件大小： | 301K |
| 代理商： | M54HC688D1 |
M74HC688
2/10
Figure 1: IEC Logic Symbols
Figure 2: Input And Output Equivalent Circuit
Table 1: Pin Description
Table 2: Truth Table
X: Don’t Care
PIN N°
SYMBOL
NAME AND FUNCTION
1G
Enable Input (Active
LOW)
2, 4, 6, 8, 11,
13, 15, 17
P0 to P7
Word Inputs
3, 5, 7, 9, 12,
14, 16, 18
Q0 to Q7
Word Outputs
19
P = Q
Equal to Output
10
GND
Ground (0V)
20
VCC
Positive Supply Voltage
INPUTS
OUTPUT
P, Q
G
P= Q
P= Q
L
P<> Q
L
H
XH
H
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