| Circuitos Integrados | ||
|---|---|---|
| 74238 |
|---|
| 3-to-8 line decoder/demultiplexer; non-inverting |
| PDF datasheet |
| A0 | 1 • | 16 | Vcc |
| A1 | 2 | 15 | Y0 |
| A2 | 3 | 14 | Y1 |
| E 1 | 4 | 13 | Y2 |
| E 2 | 5 | 12 | Y3 |
| E3 | 6 | 11 | Y4 |
| Y7 | 7 | 10 | Y5 |
| GND | 8 | 9 | Y6 |
| Pin | Symbol | Description |
|---|---|---|
| 1 | A0 | data input 0 |
| 2 | A1 | data input 1 |
| 3 | A2 | data input 2 |
| 4 | E 1 | enable input 1 (active low) |
| 5 | E 2 | enable input 2 (active low) |
| 6 | E3 | enable input 3 (active high) |
| 7 | Y7 | output 7 |
| 8 | GND | ground |
| 9 | Y6 | output 6 |
| 10 | Y5 | output 5 |
| 11 | Y4 | output 4 |
| 12 | Y3 | output 3 |
| 13 | Y2 | output 2 |
| 14 | Y1 | output 1 |
| 15 | Y0 | output 0 |
| 16 | Vcc | supply voltage |
| Specifications |
|---|
| (typical values under recommended operating conditions, unless specified) |
| Parameter | Value | Unit |
|---|---|---|
| Propagation delay, An to Yn |
14 (74HC) 18 (74HCT) |
ns |
| Propagation delay, E3 to Yn |
16 (74HC) 20 (74HCT) |
ns |
| Propagation delay, E n to Yn |
17 (74HC) 21 (74HCT) |
ns |
| Note |
|---|
| Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information. |
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