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HD74HC149

8-to-8-line Priority Encoder

HD74HC149 Features

* High Speed Operation: tpd (0 - 7 to Y) = 16 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) HD74HC

HD74HC149 General Description

The HD74HC149 is priority encoder which has 8 input lines (0 - 7) and 8 output lies (Y0 - Y7). It is the logical combination of a HD74HC148 8-3 line priority encoder driving a HD74HC138 3-8 line decoder. Only one request output can be low at a time. The output that is low is dependent on the highest.

HD74HC149 Datasheet (60.37 KB)

Preview of HD74HC149 PDF

Datasheet Details

Part number:

HD74HC149

Manufacturer:

Hitachi Semiconductor

File Size:

60.37 KB

Description:

8-to-8-line priority encoder.

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TAGS

HD74HC149 8-to-8-line Priority Encoder Hitachi Semiconductor

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