ZHCSP53G December 1982 – October 2021 SN54HC138 , SN74HC138
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
| PIN | I/O(1) | DESCRIPTION | ||
|---|---|---|---|---|
| NAME | SOIC, SSOP, PDIP, SO, TSSOP, CDIP, CFP | LCCC | ||
| A | 1 | 2 | I | Select input A (least significant bit) |
| B | 2 | 3 | I | Select input B |
| C | 3 | 4 | I | Select input C (most significant bit) |
| G2A | 4 | 5 | I | Active low enable A |
| G2B | 5 | 7 | I | Active low enable B |
| G1 | 6 | 8 | I | Active high enable |
| GND | 8 | 10 | — | Ground |
| NC | — | 1, 6, 11, 16 | — | No internal connection |
| VCC | 16 | 20 | — | Supply voltage |
| Y0 | 15 | 19 | O | Output 0 (least significant bit) |
| Y1 | 14 | 18 | O | Output 1 |
| Y2 | 13 | 17 | O | Output 2 |
| Y3 | 12 | 15 | O | Output 3 |
| Y4 | 11 | 14 | O | Output 4 |
| Y5 | 10 | 13 | O | Output 5 |
| Y6 | 9 | 12 | O | Output 6 |
| Y7 | 7 | 9 | O | Output 7 (most significant bit) |