PI74ALVC162835FD 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI74ALVC162835FD

18-Bit Universal Bus Driver with 3-State Outputs

Pericom Semiconductor 

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18-Bit Universal Bus Driver

with 3-State Outputs

Product Features

• PI74ALVC162835FD is designed for low voltage operation,

VCC = 2.3V to 3.6V

• Data inputs have clamp diodes to VCC

• Outputs have equivalent 26Ω series resistors

• Supports PC133 Registered DIMM

• Typical VOLP (Output Ground Bounce)

< 0.8V at VCC = 3.3V, TA = 25°C

• Typical VOHV (Output VOH Undershoot)

< 2.0V at VCC = 3.3V, TA = 25°C

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

• Packages available:

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

– 56-pin 173 mil wide plastic TVSOP (K6)

– 56-pin 300 mil wide plastic SSOP (V)

Product Description

Pericom Semiconductor’s PI74ALVC series of logic circuits

are produced using the Company’s advanced 0.5 micron CMOS

technology, achieving industry leading speed.

The 18-bit PI74ALVC162835FD universal bus driver is designed

for 2.3V to 3.6V VCC operation.

Data flow from A to Y is controlled by Output Enable (OE).

The device operates in the transparent mode when LE is HIGH. The

A data is latched if CLK is held at a high or low logic level. If LE

is LOW, the A-bus is stored in the latch/flip-flop on the low-to-high

transition of CLK. When OE is HIGH, the outputs are in the high-

impedance state.

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

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

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

capability of the driver.

Logic Block Diagram

OE 27

CLK 30

28

LE

A1 54

1D

C1

CLK

3 Y1

TO 17 OTHER CHANNELS

1

PS8474 04/25/00

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