4-242

FAST AND LS TTL DATA

8-INPUT UNIVERSAL

SHIFT/STORAGE REGISTER

WITH COMMON PARALLEL I/O PINS

The MC74F299 is an 8-Bit Universal Shift/Storage Register with 3-state

outputs. Four modes of operation are possible: hold (store), shift left, shift right

and load data.

The parallel load inputs and flip-flop outputs are multiplexed to reduce the

total number of package pins. Separate outputs are provided for flip-flops Q0

and Q7 to allow easy cascading. A separate active LOW Master Reset is used

to reset the register.

Cascading

CONNECTION DIAGRAM

18

17

16

15

14

13

1

2

3

4

5

6

7

20

19

8

VCC

S0

S1 DS7 Q7 I/O7

I/O3

I/O5

I/O1

OE1 OE2 I/O6 I/O4 I/O2 I/O0 Q0

9

10

MR GND

12

11

CP DS0

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

74

4.5

5.0

5.5

V

TA

Operating Ambient

Temperature Range

74

0

25

70

°C

IOH

Output Current — High

74

–1.0/– 3.0

mA

IOL

Output Current — Low

74

20/24

mA

MC74F299

8-INPUT UNIVERSAL

SHIFT/STORAGE REGISTER

WITH COMMON

PARALLEL I/O PINS

FAST

™ SCHOTTKY TTL

ORDERING INFORMATION

MC74FXXXJ

Ceramic

MC74FXXXN

Plastic

MC74FXXXDW SOIC

20

1

J SUFFIX

CERAMIC

CASE 732-03

20

1

N SUFFIX

PLASTIC

CASE 738-03

20

1

DW SUFFIX

SOIC

CASE 751D-03