HEF4738 データシートの表示（PDF） - Philips Electronics

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HEF4738

IEC/IEEE bus interface

Philips Electronics 

Note

Because the circuit uses positive logic and the bus uses negative logic,

all inputs and outputs to the bus must be inverted. For that reason, all

terminals that are working with the bus have mnemonics which are the

inverted ones of those on the bus.

Fig.3 Block diagram.

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