Texas Instruments CD74FCT543SM, CD74FCT543M96, CD74FCT543M, CD74FCT543EN Datasheet

8-1

Data sheet acquired from Harris Semiconductor
SCHS258

Features

• Buffered Inputs

• Typical Propagation Delay: 6.4ns at V

CC

= 5V,

T

A

= 25oC, CL = 50pF

• Noninverting

• Family Features

- SCR Latchup Resistant BiCMOS Process and

Circuit Design

- Speed of Bipolar FAST™/AS/S

- 64mA Output Sink Current

- Output Voltage Swing Limited to 3.7V at V

CC

= 5V

- Controlled Output Edge Rates

- Input/Output Isolation to V

CC

- BiCMOS Technology with Low Quiescent Power

Pinout

Ordering Information

PART NUMBER

TEMP.

RANGE (oC) PACKAGE

PKG.

NO.

CD74FCT543EN 0 to 70 24 Ld PDIP E24.3
CD74FCT543M 0 to 70 24 Ld SOIC M24.3
CD74FCT543SM 0 to 70 24 Ld SSOP M24.209

NOTE: When ordering the suffix M and SM packages, use the entire
part number.Addthe suffix 96 to obtainthe variant in the tapeand reel.

CD74FCT543

(PDIP, SOIC, SSOP)

TOP VIEW

1
2
3
4
5
6
7
8

9
10
11
12

LEBA

OEBA

A0

GND

16

17

18

19

20

21

22

23

24

15
14
13

VCC

B0

B2
B3

B5

B7
LEAB
OEAB

CEBA

B4

B6

A1
A2
A3

A5
A6
A7

CEAB

A4

B1

January 1997

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a trademark of Fairchild Semiconductor.

Copyright

© Harris Corporation 1997

CD74FCT543

BiCMOS FCT Interface Logic,

Octal Register/Transceiver, Three-State

NO

T RECOMMENDED

FOR NEW DESIGNS

Use CMOS T

echnology

File Number 2399.2

8-2

Functional Diagram

IEC Logic Symbol

TRUTH TABLE For A to B (Symmetric with B to A)

INPUTS LATCH STATUS OUTPUT BUFFERS

CEAB LEAB OEAB A TO B B0 THRU B7

H X X Storing High Z
XH− Storing -
X - H - High Z
L L L Transparent Current A Inputs
L H L Storing Previous A Inputs (Note 1)

NOTE:

1. Before LEAB LOW to HIGH Transition
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
A to B data flow shown; B to A flow control is the same, except using CEBA, LEBA, and OEBA.

D
LE

Q

DETAIL A

DETAIL A x 7

Q

D

LE

B0

B1

B7

OEAB

CEAB

LEAB

A0

A1

A7

OEBA

CEBA

LEBA

CD74FCT543

22
21
20
19
18
17
16

EN1

15

EN2

3
4

5
6
7
8
9

10

≥1

≥1

11
14
13
23

1
2

12

CD74FCT543