SN54ABTH32318, SN74ABTH32318

18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS

SCBS180E – JUNE 1992 – REVISED MAY 1997

1

POST OFFICE BOX 655303

Widebus+

™ Family

Significantly Reduces Power Dissipation

Combines D-Type Latches and D-Type

Flip-Flops for Operation in Transparent,

Latched, or Clocked Mode

JEDEC Standard JESD-17

and Power Down

Minimizes High-Speed Switching Noise

Need for External Pullup/Pulldown

Resistors

Thin Quad Flat (PN) Package With

12

× 12-mm Body Using 0.5-mm Lead Pitch

and 84-Pin Ceramic Quad Flat (HT) Package

22 23

C8

C7

C6

GND

C5

C4

C3

C2

C1

GND

B18

B17

B16

B15

B14

GND

B13

B12

B11

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

24

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

A2

A3

A4

GND

A5

A6

A7

A8

A9

GND

A10

A11

A12

A13

A14

GND

A15

A16

A17

25 26 27 28

SN74ABTH32318 . . . PN PACKAGE

(TOP VIEW)

79 78 77 76 75

80

74

72 71 70

73

29 30 31 32 33

69 68

21

67 66 65 64

34 35 36 37 38 39 40

63 62 61

Copyright

© 1997, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

Widebus+, EPIC-

ΙΙB, and UBE are trademarks of Texas Instruments Incorporated.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.