74HC646DB 데이터 시트보기 (PDF) - Philips Electronics

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74HC646DB

Octal bus transceiver/register; 3-state

Philips Electronics 

Philips Semiconductors

Octal bus transceiver/register; 3-state

Product specification

74HC/HCT646

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: bus driver

ICC category: MSI

Note to HCT types

The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.

To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.

INPUT

SAB, SBA

A0 to A7 and B0 to B7

UNIT LOAD COEFFICIENT

0.60

0.75

INPUT

CPAB, CPBA

OE

DIR

UNIT LOAD COEFFICIENT

1.50

1.50

1.25

September 1993

7

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