5-1

FACT DATA

Octal Transparent Latch

with 3State Outputs

The MC74AC533/74ACT533 consists of eight latches with 3-state outputs for

bus organized system applications. The flip-flops appear transparent to the data

when Latch Enable (LE) is HIGH. When LE is LOW, the data that meets the setup

time is latched. Data appears on the bus when the Output Enable (OE) is LOW.

When OE is HIGH, the bus output is in the high impedance state. The

′AC/ACT533

is the same as the

′AC/ACT373, except that the outputs are inverted. For description

and logic diagram please see the

′AC/ACT373 data sheet.

• Eight Latches in a Single Package

• 3-State Outputs for Bus Interfacing

• ′ACT533 Has TTL Compatible Inputs

• Inverted Output Version of ′ACT373

19

20

18

17

16

15

14

2

1

3

4

5

6

7

VCC

13

8

12

9

11

10

O7

D7

D6

O6

O5

D5

D4

O4

LE

OE

O0

D0

D1

O1

O2

D2

D3

O3

GND

PIN NAMES

D0–D7

Data Inputs

LE

Latch Enable Input

OE

Output Enable Input

O0–O7

Complementary 3-State Outputs

MC74AC533

MC74ACT533

OCTAL TRANSPARENT

LATCH WITH

3-STATE OUTPUTS

N SUFFIX

CASE 738-03

PLASTIC

DW SUFFIX

CASE 751D-04

PLASTIC

LOGIC SYMBOL

VCC = Pin 20

GND = Pin 10

11

1

3

4

7

8 13 14 17 18

2

5

6

9 12 15 16 19

D0 D1 D2 D3 D4 D5 D6 D7

LE

O1 O2 O3 O4 O5 O6 O7

OE

O0