MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

1

REV 6

10/95

Octal 3-State Inverting

Transparent Latch

High–Performance Silicon–Gate CMOS

The MC54/74HC563 is identical in pinout to the LS563. The device inputs

are compatible with standard CMOS outputs; with pullup resistors, they are

compatible with LSTTL outputs.

This device is identical in function to the HC533 but has the Data Inputs on

the opposite side of the package from the outputs to facilitate PC board

layout.

These latches appear transparent to data (i.e., the outputs change

asynchronously) when Latch Enable is high. The data appears at the outputs

in inverted form. When Latch Enable goes low, data meeting the setup and

hold time becomes latched.

The Output Enable input does not affect the state of the latches, but when

Output Enable is high, all device outputs are forced to the high–impedance

state. Thus, data may be latched even when the outputs are not enabled.

The HC573 is the noninverting version of this function.

• Output Drive Capability: 15 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2 to 6 V

• Low Input Current: 1 µA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance with the Requirements Defined by JEDEC Standard

No. 7A

• Chip Complexity: 202 FETs or 50.5 Equivalent Gates

LOGIC DIAGRAM

19

18

17

16

15

14

13

12

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

2

3

4

5

6

7

8

9

D0

D1

D2

D3

D4

D5

D6

D7

INVERTING

OUTPUTS

DATA

INPUTS

11

1

LATCH

ENABLE

OUTPUT

ENABLE

PIN 20 = VCC

PIN 10 = GND

MC54/74HC563

PIN ASSIGNMENT

D4

D2

D1

D0

OUTPUT

ENABLE

GND

D7

D6

D5

D3

5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

Q3

Q2

Q1

Q0

VCC

LATCH

ENABLE

Q7

Q6

Q5

Q4

FUNCTION TABLE

Inputs

Output

Output

Latch

Enable

Enable

D

Q

L

H

H

L

L

H

L

H

L

L

X

No Change

H

X

X

Z

X = don’t care

Z = high impedance

DW SUFFIX

SOIC PACKAGE

CASE 751D–04

N SUFFIX

PLASTIC PACKAGE

CASE 738–03

ORDERING INFORMATION

MC54HCXXXJ

MC74HCXXXN

MC74HCXXXDW

Ceramic

Plastic

SOIC

J SUFFIX

CERAMIC PACKAGE

CASE 732–03

1

20

1

20

1

20