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PI74FCT162244T

Fast CMOS 16-Bit Buffer/Line Drivers

Pericom Semiconductor 

PI74FCT16244T

PI74FCT162244T

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Fast CMOS 16-Bit Buffer/Line Drivers

Product Features

Common Features

• PI74FCT16244T,PI74FCT162244TandPI74FCT162H244T

are high-speed, low-power devices with high-current drive

VCC = 5V ±10%

• Hysteresis on all inputs

• Packages available:

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

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

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

• Device models available upon request

PI74FCT16244T Features

• High output drive: IOH = –32mA; IOL = 64mA

• Power off disable outputs permit "live insertion"

• Typical VOLP (Output Ground Bounce)

< 1.0V at VCC = 5V, TA = 25°C

PI74FCT162244T Features

• Balanced output drivers: ±24mA

• Reduced system switching noise

• Typical VOLP (Output Ground Bounce)

< 0.6V at VCC = 5V, TA = 25°C

PI74FCT162H244T Features

• Bus Hold retains last active bus state during 3-State

• Eliminates the need for external pull-up resistors

Product Description

Pericom Semiconductor’s PI74FCT series of logic circuits are

produced using the Company’s advanced 0.6 micron CMOS

technology, achieving industry leading speed grades.

PI74FCT16244T, PI74FCT162244T, and PI74FCT162H244T are

non-inverting 16-bit buffer/line drivers designed for applications

driving high capacitance loads and low impedance backplanes.

These high-speed, low power devices offer bus/backplane interface

capability and a flow-through organization for ease of board

layout. These devices are designed with three-state controls to

operate in a Quad-Nibble, Dual-Byte, or a single 16-bit word

mode.

The PI74FCT16244T output buffers are designed with a Power-

Off disable allowing “live insertion” of boards when used as

backplane drivers.

The PI74FCT162244T has ±24mA balanced output drivers. It is

designed with current limiting resistors at its outputs to control the

output edge rate resulting in lower ground bounce and undershoot.

This eliminates the need for external terminating resistors for most

interface applications.

The PI74FCT162H244T has “Bus Hold” which retains the input’s

last state whenever the input goes to high-impedance preventing

“floating” inputs and eliminating the need for pull-up/down

resistors.

Logic Block Diagram

1

PS2031D 05/17/99

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