PI74FCT16541/162541/162H541T

16-BIT BUFFER/LINE DRIVERS

229

PS2037A 03/11/96

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Logic Block Diagram

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PI74FCT16541T

PI74FCT162541T

PI74FCT162H541T

Fast CMOS 16-Bit Octal

Buffer/Line Drivers

Product Description

Pericom Semiconductor’s PI74FCT series of logic circuits are pro-

ducedintheCompany’sadvanced 0.6/0.8 micron CMOStechnology,

achieving industry leading speed grades.

The PI74FCT16541T, PI74FCT162541T, and PI74FCT162H541T

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.

They are designed with three-state controls to operate in a Dual-

Byte, or a single 16-bit word mode.

The PI74FCT16541T output buffers are designed with a Power-

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

backplane drivers.

The PI74FCT162541T has ±24 mA 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 PI74FCT162H541T 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.

Product Features

Common Features

• PI74FCT16541T, PI74FCT162541T, and

PI74FCT162H541T are high-speed,

low power devices with high current drive

• Hysteresis on all inputs

• Packages available

– 48-pin 240 mil wide plastic TSSOP (A48)

– 48-pin 300 mil wide plastic SSOP (V48)

PI74FCT16541T Features

• Power off disable outputs permit “live insertion”

PI74FCT162541T Features

• Balanced output drivers: ±24 mA

• Reduced system switching noise

PI74FCT162H541T Features

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

• Eliminates the need for external pull-up resistors

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