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74LS148 |
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| Part Number | 74LS148 |
| Manufacturer | Motorola |
| Description | 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS The SN54 / 74LS147 and the SN54/ 74LS148 are Priority Encoders. They provide priority decoding of the inputs to ensure that only the highest or... |
| Features |
erences between the LS148 and the LS748 are that (1) Pin 10 (input 0) has a fan-in of 2 on the LS748 versus a fan-in of 1 on the LS148; (2) Pins 1, 2, 3, 4, 11, 12 and 13 (inputs 1, 2, 3, 4, 5, 6, 7) have a fan-in of 3 on the LS748 versus a fan-in of 2 on the LS148. The only ac difference is that tPHL from EI to EO is changed from 40 to 45 ns. SN54 / 74LS147 (TOP VIEW)
OUTPUT VCC 16 NC 15 D 14 D 4 5 1 4 2 5 6 3 6 7 4 7 8 5 8 C 6 C B 7 B 8 GND 3 13 3 INPUTS 2 12 2 1 11 1 9 10 9 A OUTPUT A 9
SN54/74LS147 SN54/74LS148 SN54/74LS748
10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS
LOW POW... |
| Document |
 74LS148 Data Sheet
PDF 231.44KB |
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | 74LS14 |
System Logic Semiconductor |
Hex Schmitt-Trigger Inverter |
|
| 2 | 74LS14 |
Fairchild Semiconductor |
Hex Inverter |
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| 3 | 74LS14 |
ON Semiconductor |
LOW POWER SCHOTTKY |
|
| 4 | 74LS14 |
Hitachi Semiconductor |
Hex Schmitt Trigger Inverters |
|
| 5 | 74LS14 |
Motorola |
SCHMITT TRIGGERS DUAL GATE/HEX INVERTER |
|
| 6 | 74LS14 |
National Semiconductor |
Hex Inverters |
|
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