ZHCSOD3F December 1982 – June 2021 SN54HC74 , SN74HC74
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | D, DB, N, NS, PW, J, or W | FK | ||
1 CLR | 1 | 2 | Input | Channel 1, Clear Input, Active Low |
1D | 2 | 3 | Input | Channel 1, Data Input |
1CLK | 3 | 4 | Input | Channel 1, Positive edge triggered clock input |
1 PRE | 4 | 6 | Input | Channel 1, Preset Input, Active Low |
1Q | 5 | 8 | Output | Channel 1, Output |
1 Q | 6 | 9 | Output | Channel 1, Inverted Output |
GND | 7 | 10 | — | Ground |
2 Q | 8 | 12 | Output | Channel 2, Inverted Output |
2Q | 9 | 13 | Output | Channel 2, Output |
2 PRE | 10 | 14 | Input | Channel 2, Preset Input, Active Low |
2CLK | 11 | 16 | Input | Channel 2, Positive edge triggered clock input |
2D | 12 | 18 | Input | Channel 2, Data Input |
2 CLR | 13 | 19 | Input | Channel 2, Clear Input, Active Low |
VCC | 14 | 20 | — | Positive Supply |
NC | 1, 5, 7, 11, 15, 17 | — | Not internally connected |