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HD74HC148

Hitachi Semiconductor
Part Number HD74HC148
Manufacturer Hitachi Semiconductor
Description 8-to-3-line Octal Priority Encoder
Published Mar 23, 2005
Detailed Description HD74HC148 8-to-3-line Octal Priority Encoder Description The HD74HC148 encodes eight data lines to three-line (4-2-1) b...
Datasheet PDF File HD74HC148 PDF File

HD74HC148
HD74HC148

Overview
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.
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 ...


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