74F74 datasheet(2/8 Pages) NSC

tên linh kiện	74F74

Giải thích chi tiết về linh kiện	Dual D-Type Positive Edge-Triggered Flip-Flop

PDF	8 Pages

Scroll/Zoom	100%

nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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Connection Diagrams

Pin Assignment

for DIP SOIC and Flatpak

TLF9469 – 1

Pin Assignment

for LCC

TLF9469 – 2

Unit LoadingFan Out

54F74F

Pin Names

Description

Input IIH IIL

HIGHLOW

Output IOH IOL

D1 D2

Data Inputs

1010

20 mA b06 mA

CP1 CP2

Clock Pulse Inputs (Active Rising Edge)

1010

20 mA b06 mA

CD1 CD2

Direct Clear Inputs (Active LOW)

1030

20 mA b18 mA

SD1 SD2

Direct Set Inputs (Active LOW)

1030

20 mA b18 mA

Q1 Q1 Q2 Q2

Outputs

50333

1 mA20 mA

Truth Table

Inputs

Outputs

H (h) e HIGH Voltage Level

L (l) e LOW Voltage Level

X e Immaterial

Q0 e Previous Q (Q) before LOW-to-HIGH Clock Transition

Lower case letters indicate the state of the referenced input or output one

setup time prior to the LOW-to-HIGH clock transition

Logic Diagram

TLF9469 – 5

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays

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