Nexperia

74HC573; 74HCT573

Octal D-type transparent latch; 3-state

4. Functional diagram

mna809

3-STATE

OUTPUTS

LATCH

1 to 8

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7 12

13

14

15

16

17

18

19

D0

D1

D2

D3

D4

D5

D6

D7

LE

OE

9

11

1

8

7

6

5

4

3

2

Fig. 1. Functional diagram

001aae075

Q4

D4

D

Q

Q3

D3

D

Q

Q2

D2

D

Q

Q1

D1

D

LE

Q

Q0

D0

D

LATCH

1

LATCH

2

LATCH

3

LATCH

4

LATCH

5

Q

LE

OE

LE

LE

LE

LE

Q5

D5

D

Q

LATCH

6

LE

Q6

D6

D

Q

LATCH

7

LE

Q7

D7

D

Q

LATCH

8

LE

Fig. 2. Logic diagram

mna807

D0

D1

D2

D3

D4

D5

D6

D7

LE

OE

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

1

11

12

13

14

15

16

17

18

19

9

8

7

6

5

4

3

2

Fig. 3. Logic symbol

mna808

12

13

14

15

16

17

18

11

C1

1

EN1

1D

19

9

8

7

6

5

4

3

2

Fig. 4. IEC logic symbol

74HC_HCT573

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Product data sheet

Rev. 8 — 10 September 2021

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