ZHCSX11B November 1998 – August 2024 CD54AC257 , CD54ACT257 , CD74AC257 , CD74ACT257 , CD74ACT258
PRODUCTION DATA
3 Pin Configuration and Functions
Figure 3-1 CD54AC257, CD54ACT257 J
Package; CD74AC257, CD74ACT257, CD74ACT258 N or D Package; 16-Pin CDIP, PDIP
or SOIC (Top View)Table 3-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| S | 1 | I | Select |
| 1I0 | 2 | I | Channel 1 Input 0 |
| 1I1 | 3 | I | Channel 1 Input 1 |
| 1Y | 4 | O | Channel 1 Output |
| 2I0 | 5 | I | Channel 2 Input 0 |
| 2I1 | 6 | I | Channel 2 Input 1 |
| 2Y | 7 | O | Channel 2 Output |
| GND | 8 | G | Ground |
| 3Y | 9 | O | Channel 3 Output |
| 3I1 | 10 | I | Channel 3 Input 1 |
| 3I0 | 11 | I | Channel 3 Input 0 |
| 4Y | 12 | O | Channel 4 Output |
| 4I1 | 13 | I | Channel 4 Input 1 |
| 4I0 | 14 | I | Channel 4 Input 0 |
| OE | 15 | I | Output Enable |
| VCC | 16 | P | Positive Supply |
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P =
Power.