Circuitos Integrados | ||
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74540 |
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Octal buffer/line driver; 3-state; inverting |
PDF datasheet |
OE 1 | 1 • | 20 | Vcc |
A0 | 2 | 19 | OE 2 |
A1 | 3 | 18 | Y 0 |
A2 | 4 | 17 | Y 1 |
A3 | 5 | 16 | Y 2 |
A4 | 6 | 15 | Y 3 |
A5 | 7 | 14 | Y 4 |
A6 | 8 | 13 | Y 5 |
A7 | 9 | 12 | Y 6 |
GND | 10 | 11 | Y 7 |
Pin | Symbol | Description |
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1 | OE 1 | output enable (active low) |
2 | A0 | data input |
3 | A1 | data input |
4 | A2 | data input |
5 | A3 | data input |
6 | A4 | data input |
7 | A5 | data input |
8 | A6 | data input |
9 | A7 | data input |
10 | GND | ground |
11 | Y 7 | bus output |
12 | Y 6 | bus output |
13 | Y 5 | bus output |
14 | Y 4 | bus output |
15 | Y 3 | bus output |
16 | Y 2 | bus output |
17 | Y 1 | bus output |
18 | Y 0 | bus output |
19 | OE 2 | output enable (active low) |
20 | Vcc | supply voltage |
Specifications |
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(typical values under recommended operating conditions, unless specified) |
Parameter | Value | Unit |
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Propagation delay, An to Y n |
9 (74HC) 11 (74HCT) |
ns |
Note |
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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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