IDT54/74FCT621T/AT

FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.18

1

Integrated Device Technology, Inc.

FAST CMOS

OCTAL BUS TRANSCEIVER

(OPEN DRAIN)

DESCRIPTION:

The IDT54/74FCT621T/AT is an octal transceiver with

non-inverting Open-Drain bus compatible outputs in both

send and receive directions. The B bus outputs are capable

of sinking 64mA providing very good capacitive drive

characteristics. These octal bus transceivers are designed for

asynchronous two-way communication between data buses.

The control function implementation allows for maximum

flexibility in timing.

IDT54/74FCT621T/AT

DIP/SOIC/CERPACK

TOP VIEW

FUNCTIONAL BLOCK DIAGRAM

(1)

PIN CONFIGURATIONS

1

MILITARY AND COMMERCIAL TEMPERATURE RANGES

APRIL 1994

©1995 Integrated Device Technology, Inc.

6.18

DSC-4222/4

FEATURES:

• Std. and A speed grades

• Low input and output leakage

≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility

• Power off disable outputs permit “live insertion”

• Meets or exceeds JEDEC standard 18 specifications

• Product available in Radiation Tolerant and Radiation

Enhanced versions

• Military product compliant to MIL-STD-883, Class B

and DESC listed (dual marked)

• Available in DIP, SOIC, CERPACK and LCC packages

7 Other Transceivers

GAB

GBA

2538 drw 01

The IDT logo is a registered trademark of Integreted Device Technology, Inc.

5

6

7

8

9

10

1

2

3

4

20

19

18

17

16

15

14

13

Vcc

12

11

GAB

GBA

GND

P20-1,

D20-1,

SO20-2

&

E20-1

LCC

TOP VIEW

2538 drw 03

4

5

6

7

8

18

17

16

15

14

INDEX

L20-2

9 10 11 12 13

32

1

20 19

2538 drw 02