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TheTTL - Al Kossow's Bitsavers

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SN54284, SN54285, SN74274, SN74285<br />

4·BIT BY 4·BIT PARALLEL BINARY MULTIPLIERS<br />

schematics<br />

EQUIVALENT OF<br />

EACH INPUT<br />

Vcc---'---<br />

TYPICAL OF<br />

ALL OUTPUTS<br />

OUTPUT<br />

INPUT<br />

BINARY INPUTS<br />

WQRD 2 WORD 1<br />

~~<br />

,<br />

fGA<br />

GB<br />

20 2C 2B 2A 10 1C 1B 1A<br />

SN54284/SN74284<br />

Y7 Y6 Y5 Y4<br />

I I I I<br />

I<br />

fGA<br />

GB<br />

I<br />

20 2C<br />

Y3<br />

I<br />

I<br />

2B<br />

.2A 10 1C<br />

SN54285/SN74285<br />

\ 27 26 25 24 23 22 21 20<br />

........................ ~V~ .........................r'<br />

BINARY OUTPUTS<br />

Y2<br />

I<br />

Y1<br />

I<br />

1B<br />

YO<br />

I<br />

1A<br />

FIGURE A-4 X 4 MULTIPLIER<br />

5-34<br />

TEXAS •<br />

INSTRUMENTS<br />

POST OFFICE BOX 225012 • DALLAS, TEXAS 75265

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