MC74F323 查看數據表（PDF） - Motorola => Freescale

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MC74F323

8-INPUT SHIFT/STORAGE REGISTER WITH SYNCHRONOUS RESET AND COMMON I/O PINS

Motorola => Freescale 

8-INPUT SHIFT/STORAGE

REGISTER WITH SYNCHRONOUS

RESET AND COMMON I/O PINS

The MC74F323 is an 8-Bit Universal Shift/Storage Register with 3-state

outputs. Its function is similar to the F299 with the exception of Synchronous

Reset.

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.

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

parallel load. All modes are activated on the LOW-to-HIGH transition of the

clock.

• Common I/O For Reduced Pin Count

• Four Operation Modes: Shift Left, Shift Right, Parallel Load and Store

• Separate Continuous Inputs and Outputs from Q0 and Q7 Allow Easy

Cascading

• Fully Synchronous Reset

• 3-State Outputs for Bus Oriented Applications

• Input Clamp Diodes Limit High-Speed Termination Effects

CONNECTION DIAGRAM

VCC S1 DS7 Q7 I/O7 I/O5 I/O3 I/O1 CP DS0

20 19 18 17 16 15 14 13 12 11

1 2 3 4 5 6 7 8 9 10

S0 OE1 OE2 I/O6 I/O4 I/O2 I/O0 Q0 SR GND

MC74F323

8-INPUT SHIFT/STORAGE

REGISTER WITH SYNCHRONOUS

RESET AND COMMON I/O PINS

FAST™ SCHOTTKY TTL

20

1

20

1

20

1

J SUFFIX

CERAMIC

CASE 732-03

N SUFFIX

PLASTIC

CASE 738-03

DW SUFFIX

SOIC

CASE 751D-03

ORDERING INFORMATION

MC74FXXXJ Ceramic

MC74FXXXN Plastic

MC74FXXXDW SOIC

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

TA

IOH

IOL

Supply Voltage

74

4.5

5.0

5.5

V

Operating Ambient Temperature Range

74

0

25

70

°C

Output Current — High

74

–1.0/– 3.0

mA

Output Current — Low

74

20/24

mA

FAST AND LS TTL DATA

4-150

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