54AC164245 datasheet(4/22 Pages) STMICROELECTRONICS

Numer części	54AC164245

Szczegółowy opis	Rad-hard 16-bit transceiver, 3.3 V to 5 V bidirectional level shifter

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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4 / 22 page

Functional description

54AC164245

4/22

Doc ID 18093 Rev 2

Table 3.

Pin descriptions

Pin n°

Symbol

Name and function

1

DIR1

Direction control inputs

2, 3, 5, 6, 8, 9, 11, 12

1B1 to 1B8

Side B inputs or 3-state outputs (5 V port)

4,10, 15, 21, 28, 34, 39, 45

VSS

Reference voltage to ground

7, 18

VDD1

Supply voltage (5 V)

13, 14, 16, 17, 19, 20, 22, 23

2B1 to 2B8

Side B inputs or 3-state outputs (5 V port)

24

DIR2

Direction control inputs

25

nG2

Output enable inputs (active low)

31, 42

VDD2

Supply voltage (3.3 V)

47, 46, 44, 43, 41, 40, 38, 37

1A1 to 1A8

Side A inputs or 3-state outputs (3.3 V port)

36, 35, 33, 32, 30, 29, 27, 26

2A1 to 2A8

Side A inputs or 3-state outputs (3.3 V port)

48

nG1

Output enable inputs (active low)

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