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74138 |
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| Part Number | 74138 |
| Manufacturer | ON Semiconductor (https://www.onsemi.com/) |
| Description | The LS138 is a high speed 1-of-8 Decoder/Demultiplexer fabricated with the low power Schottky barrier diode process. The decoder accepts three binary weighted inputs (A0, A1, A2) and when enabled pro... |
| Features |
three Enable inputs, two active LOW (E1, E2) and one active HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable
function allows easy parallel expansion of the device to a 1-of-32 (5 lines to 32 lines) decoder with just four LS138s and one inverter. (See Figure a.) The LS138 can be used as an 8-output demultiplexer by using one of the active LOW Enable inputs as the data input and the other Enable inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active HIGH or active LOW state.
TRUTH TABLE
INPUT... |
| Document |
 74138 Data Sheet
PDF 124.92KB |
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Desde 2024. D4U Semiconductor.
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