Download PDF74HC540 PHILIPS
Document overview
- PDF pages: 7
Technical content
Page 1
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| SYMBOL | PARAMETER | CONDITIONS | TYPICAL | UNIT | |
|---|---|---|---|---|---|
| HC | HCT | ||||
| t / t PHL PLH | propagation delay A to Y n n | C = 15 pF; V = 5 V L CC | 9 | 11 | ns |
| C I | input capacitance | 3.5 | 3.5 | pF | |
| C PD | power dissipation capacitance per buffer | notes 1 and 2 | 39 | 44 | pF |
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| PIN NO. | SYMBOL | NAME AND FUNCTION |
|---|---|---|
| 1, 19 2, 3, 4, 5, 6, 7, 8, 9 10 18, 17, 16, 15, 14, 13, 12, 11 20 | OE , OE 1 2 A to A 0 7 GND Y to Y 0 7 V CC | output enable input (active LOW) data inputs ground (0 V) bus outputs positive supply voltage |
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| INPUTS | OUTPUT | ||
| OE 1 | OE 2 | A n | Y n |
| L L X H | L L H X | L H X X | H L Z Z |
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| SYMBOL | PARAMETER | T (°C) amb | UNIT | TEST CONDITIONS | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT | V CC (V) | WAVEFORMS | |||||||||
| +25 | −40 to +85 | −40 to +125 | |||||||||
| min. | typ. | max. | min. | max. | min. | max. | |||||
| t / t PHL PLH | propagation delay A to Y n n | 13 | 24 | 30 | 36 | ns | 4.5 | Fig.6 | |||
| t / t PZH PZL | 3-state output enable time OE to Y n | 22 | 35 | 44 | 53 | ns | 4.5 | Fig.7 | |||
| t / t PHZ PLZ | 3-state output disable time OE to Y n | 23 | 35 | 44 | 53 | ns | 4.5 | Fig.7 | |||
| t / t THL TLH | output transition time | 5 | 12 | 15 | 18 | ns | 4.5 | Fig.6 | |||
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