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PI74ALVTC16244A

1.8/2.5/3.3V 16-Bit Buffer/Driver with 3-State Outputs

Pericom Semiconductor Corporation 

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1.8/2.5/3.3V 16-Bit Buffer/Driver

with 3-State Outputs

Product Features

Product Description

• PI74ALVTC family is designed for low voltage operation,

VDD = 1.8V to 3.6V

• Supports Live Insertion

• 3.6V I/O Tolerant Inputs and Outputs

• Bus Hold

• High Drive, -32/64mA @ 3.3V

• Uses patented noise reduction circuitry

• Power-off high impedance inputs and outputs

• Industrial operation at –40°C to +85°C

• Packaging (Pb-free & Green available):

– 48-pin 173 mil wide plastic TVSOP (K)

– 48-pin 240 mil wide plastic TSSOP (A)

The PI74ALVTC16244 buffer/driver is designed specifically to

improve both the performance and density of 3-state memory

address drivers, clock drivers, and bus-oriented receivers and

transmitters.

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.

To ensure the high-impedance state during power up or power

down, OE should be tied to Vdd through a pullup resistor; the

minimum value of the resistor is determined by the current-sinking

capability of the driver.

The family offers both I/O Tolerant, which allows it to operate in

mixed 1.8/3.6V systems, and “Bus Hold,” which retains the data

input’s last state whenever the data input goes to high-impedance,

preventing “floating” inputs and eliminating the need for pullup/

down resistors.

Logic Block Diagram

1OE 1

1A1 47

46

1A2

44

1A3

43

1A4

2OE 48

41

2A1

40

2A2

38

2A3

37

2A4

06-0155

2 1Y1

3

1Y2

5

1Y3

6

1Y4

3OE 25

3A1 36

35

3A2

33

3A3

32

3A4

8 2Y1

9 2Y2

11 2Y3

12 2Y4

24

4OE

30

4A1

29

4A2

27

4A3

26

4A4

1

13 3Y1

14

3Y2

16

3Y3

17

3Y4

19

4Y1

20

4Y2

22

4Y3

23

4Y4

PS8159G 05/30/06

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