Download PDF74HC7245 PHILIPS
Document overview
- PDF pages: 7
Technical content
Page 1
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| INPUTS | INPUTS/OUTPUTS | ||
| OE | DIR | A n | B n |
| L L H | L H X | A = B inputs Z | inputs B = A Z |
| SYMBOL | PARAMETER | CONDITIONS | TYPICAL | UNIT | |
|---|---|---|---|---|---|
| HC | HCT | ||||
| t / t PHL PLH | propagation delay A to B n n | C = 15 pF; V = 5 V L CC | 8 | 12 | ns |
| C I | input capacitance | 3.5 | 3.5 | pF | |
| C I/O | input/output capacitance | 10 | 10 | pF | |
| C PD | power dissipation capacitance per transceiver | notes 1 and 2 | 40 | 40 | pF |
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| PIN NO. | SYMBOL | NAME AND FUNCTION |
|---|---|---|
| 1 2, 3, 4, 5, 6, 7, 8, 9 10 18, 17, 16, 15, 14, 13, 12, 11 19 20 | DIR A to A 0 7 GND B to B 0 7 OE V CC | direction control data inputs/outputs ground (0 V) data inputs/outputs output enable input (active LOW) positive supply voltage |
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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 B n; n B to A n n | 17 | 30 | 37 | 45 | ns | 4.5 | Fig.7 | |||
| t / t PZH PZL | 3-state output enable time OE to A ; n OE to B n | 19 | 32 | 40 | 48 | ns | 4.5 | Fig.7 | |||
| t / t PHZ PLZ | 3-state output disable time OE to A ; n OE to B n | 19 | 32 | 40 | 48 | ns | 4.5 | Fig.7 | |||
| t / t THL TLH | output transition time | 5 | 12 | 15 | 18 | ns | 4.5 | Fig.7 | |||
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