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74HC148 - 8-to-3-line Octal Priority Encoder

General Description

The HD74HC148 encodes eight data lines to three-line (4-2-1) binary (octal).

Cascading circuitry (enable input EI and enable output EO) is provided to allow octal expansion without the need for external circuitry.

The data inputs and outputs are active at the low logic level.

Key Features

  • High Speed Operation: tpd (0 - 7 to A0 - A2) = 15 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs EI H L L L L L L L L L H : L : X : 0 X H X X X X X X X L 1 X H X X X X X X L H High level Low level Irrelevant 2 X H X X X X X L H H 3 X H X X X X L H H H 4 X H X X X L H H H H 5.

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📁 Similar Datasheet

Part Number Description Manufacturer
74HC148 8-Line to 3-Line Priority Encoders Texas Instruments
74HC148 8-3 Line Priority Encoder National Semiconductor
74HC148 8-3 Line Priority Encoder Fairchild
74HC148 8 TO 3 LINE PRIORITY ENCODER STMicroelectronics
74HC14 Hex Inverters Texas Instruments

Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
74HC114 Dual J-K Flip-Flops
74HC155 Dual 2-to-4-line Decoders/Demultiplexers
74HC164 8-bit Parallel-out Shift Register
74HC01 Quad 2-input NAND Gate
74HC257 Quad. 2-to-1-line Data Selectors/Multiplexers

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HD74HC148 8-to-3-line Octal Priority Encoder Description The HD74HC148 encodes eight data lines to three-line (4-2-1) binary (octal). Cascading circuitry (enable input EI and enable output EO) is provided to allow octal expansion without the need for external circuitry. The data inputs and outputs are active at the low logic level.