1OE

1A1

1A2

1A3

1A4

1Y1

1Y2

1Y3

1Y4

1

47

46

44

43

2

3

5

6

2OE

2A1

2A2

2A3

2A4

2Y1

2Y2

2Y3

2Y4

48

41

40

38

37

8

9

11

12

3OE

3A1

3A2

3A3

3A4

3Y1

3Y2

3Y3

3Y4

25

36

35

33

32

13

14

16

17

4OE

4A1

4A2

4A3

4A4

4Y1

4Y2

4Y3

4Y4

24

30

29

27

26

19

20

22

23

SN74LVCH162244A

SCAS545L – OCTOBER 1995 – REVISED JUNE 2014

www.ti.com

9 Detailed Description

9.1 Overview

The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and

symmetrical active-low output-enable (OE) inputs.

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Inputs can

be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed

3.3-V/5-V system environment.

preventing damaging current backflow through the device when it is powered down. Active bus-hold circuitry

holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold

circuitry is not recommended.

9.2 Functional Block Diagram

10

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