74VCX16245DTR datasheet(2/8 Pages) ONSEMI

Part #	74VCX16245DTR

Description	Low?뭋oltage 1.8/2.5/3.3V 16?묪it Transceiver

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Manufacturer	ONSEMI [ON Semiconductor]

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74VCX16245

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Figure 1. 48−Lead Pinout

(Top View)

Figure 2. Logic Diagram

T/R1

A0:7

B0:7

One of Eight

48

1

OE1

T/R1

47

2

A0

B0

46

3

A1

B1

45

4

GND

44

5

A2

B2

43

6

A3

B3

42

7

VCC

41

8

A4

B4

40

9

A5

B5

39

10

GND

38

11

A6

B6

37

12

A7

B7

36

13

A8

B8

35

14

A9

B9

34

15

GND

33

16

A10

B10

32

17

A11

B11

31

18

VCC

30

19

A12

B12

29

20

A13

B13

28

21

GND

27

22

A14

B14

26

23

A15

B15

25

24

OE2

T/R2

OE1

T/R2

A8:15

B8:15

OE2

1

48

24

25

1

48

25

24

A0 47

A1 46

A2 44

A3 43

B0

2

EN1

T/R1

OE1

OE2

T/R2

B1

3

B2

5

B3

6

EN2

EN3

EN4

A4 41

A5 40

A6 38

A7 37

B4

8

B5

9

B6

11

B7

12

A8 36

A9 35

A10 33

A11 32

B8

13

B9

14

B10

16

B11

17

A12 30

A13 29

A14 27

A15 26

B12

19

B13

20

B14

22

B15

23

1 ∇

2 ∇

3 ∇

4 ∇

1

Figure 3. IEC Logic Diagram

Table 1. PIN NAMES

Pins

Function

OEn

T/Rn

A0−A15

B0−B15

Output Enable Inputs

Transmit/Receive Inputs

Side A Inputs or 3−State Outputs

Side B Inputs or 3−State Outputs

TRUTH TABLE

Inputs

Outputs

Inputs

Outputs

OE1

T/R1

OE2

T/R2

L

Bus B0:7 Data to Bus A0:7

L

Bus B8:15 Data to Bus A8:15

L

H

Bus A0:7 Data to Bus B0:7

L

H

Bus A8:15 Data to Bus B8:15

H

X

High Z State on A0:7, B0:7

H

X

High Z State on A8:15, B8:15

H = High Voltage Level

L = Low Voltage Level

X = High or Low Voltage Level and Transitions Are Acceptable

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