1

Data sheet acquired from Harris Semiconductor

SCHS271A

Features

• Buffered Inputs

• Noninverting

• SCR Latchup Resistant BiCMOS Process and

Circuit Design

• Speed of Bipolar FAST™/AS/S

• 64mA Output Sink Current (74 Series)

• 48mA Output Sink Current (54 Series)

• Controlled Output Edge Rates

• BiCMOS Technology with Low Quiescent Power

Description

The CD54/74FCT245 octal bus transceiver uses a small

geometry BiCMOS technology. The output stage is a combi-

nation of bipolar and CMOS transistors that limits the output

lowering of output swing (0V to 3.7V) reduces power bus

ground bounce and their effects during simultaneous output

switching. The output configuration also enhances switching

speed and is capable of sinking 48mA to 64mA.

The CD54/74FCT245 is a noninverting, three-state, bidirec-

tional transceiver/buffer intended for two-way transmission

from”A” bus to “B” bus or “B” bus to “A” bus. The logic level

present on the Direction Input (DIR) determines the data direc-

tion. When the Output Enable input is HIGH, the outputs are in

the high impedance state.

Pinout

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

CD74FCT245E

0 to 70

20 Ld PDIP

E20.3

CD74FCT245M

0 to 70

20 Ld SOIC

M20.3

CD54FCT245E

-55 to 125

20 Ld PDIP

E20.3

NOTE: When ordering the suffix M and SM packages, use the entire

part number. Add the suffix 96 to obtain the variant in the tape and reel.

CD54FCT245, CD74FCT245

(PDIP, SOIC)

TOP VIEW

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

DIR

A0

A1

A2

A3

A4

A6

A5

A7

GND

B0

B1

B2

B3

B4

B5

B6

B7

OE

January 1997 - Revised October 1999

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

FAST™ is a trademark of Fairchild Semiconductor.

Copyright

CD54FCT245,

CD74FCT245

BiCMOS FCT Interface Logic,

Octal-Bus Tranceivers, Three-State