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HD74HC182 - Look-Ahead Carry Generator

General Description

The HD74HC182 is a high-speed Carry Lockahead Generator.

It is used with the HD74HC181 4-Bit Arithmetic Logic Unit to provide high-speed lockahead over World lengths of more than four bits.

Key Features

  • High Speed Operation: tpd (Pn to P) = 11 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) Pin Designations Item G0, G1, G2, G3 P0, P1, P2, P3 Cn Cn+x, Cn+y, Cn+z G P VCC GND Pin No. 3, 1, 14, 5 4, 2, 15, 6 13 12, 11, 9 10 7 16 8 Functions Active-low carry generate inputs Active-low carry propagate.

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📁 Similar Datasheet

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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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HD74HC182 Look-Ahead Carry Generator Description The HD74HC182 is a high-speed Carry Lockahead Generator. It is used with the HD74HC181 4-Bit Arithmetic Logic Unit to provide high-speed lockahead over World lengths of more than four bits. The device accepts up to four pairs of active-low Carry Propagate (P 0, P1, P 2, P 3) and Carry Generate (G0, G1, G 2, G3) signals and an active-high carries (C n+x, Cn+y, Cn+z) across four groups of binary adders. The HD74HC182 also has active-low Carry Propagate (P) and Carry Generate (G) outputs which may be used for further levels of lockahead.