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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

47

1A1

46

1A2

44

1A3

43

1A4

1Y1

2

1Y2

3

1Y3

5

1Y4

6

41

2A1

40

2A2

38

2A3

37

2A4

2Y1

8

2Y2

9

2Y3

11

2Y4

12

36

3A1

35

3A2

33

3A3

32

3A4

3Y1

13

3Y2

14

3Y3

16

3Y4

17

30

4A1

29

4A2

27

4A3

26

4A4

4Y1

19

4Y2

20

4Y3

22

4Y4

23

EN1

1

EN4

24

1OE

2OE

3OE

4OE

EN2

48

EN3

25

(1)

Thissymbolisinaccordancewith ANSI/IEEEStd91-1984andIECPublication617-12.

1

1

1

2

1

3

1

4

SN54LVTH16240

,, SN74LVTH16240

3.3-V ABT 16-BIT BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS684D – MARCH 1997 – REVISED DECEMBER 2006

The devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. The devices provide

inverting outputs and symmetrical active-low output-enable (OE) inputs.

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

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

disables the outputs, preventing damaging current backflow through the devices when they are powered down.

The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,

which prevents driver conflict.

The SN54LVTH16240 is characterized for operation over the full military temperature range of –55

°C to 125°C.

The SN74LVTH16240 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

(each 4-bit buffer)

INPUTS

OUTPUTS

Y

OE

A

L

H

L

L

L

H

H

X

Z

2

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