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74148 - PRIORITY ENCODERS

Download the 74148 datasheet PDF. This datasheet also covers the 74147 variant, as both devices belong to the same priority encoders family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (74147-Motorola.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
74148 Priority Encoder Texas Instruments
74148 8-3 Line Priority Encoder National Semiconductor
7414 Hex Schmitt-Trigger Inverter Texas Instruments
7414 Dual Gate/Hex Inverter ON Semiconductor
74141 1-of-10 Decoder/Driver National Semiconductor

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
74147 PRIORITY ENCODERS
74151 8-INPUT MULTIPLEXER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 order data line is encoded. Both devices have data inputs and outputs which are active at the low logic level. The LS147 encodes nine data lines to four-line (8-4-2-1) BCD. The implied decimal zero condition does not require an input condition because zero is encoded when all nine data lines are at a high logic level. The LS148 encodes eight data lines to three-line (4-2-1) binary (octal). By providing cascading circuitry (Enable Input EI and Enable Output EO) octal expansion is allowed without needing external circuitry.