PI74FCT162245MT 查看數據表（PDF） - Pericom Semiconductor

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PI74FCT162245MT

Fast CMOS 16-Bit Heavy Load Bidirectional Transceivers

Pericom Semiconductor 

PI74FCT162245MT

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PI74FCT162245MT

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Fast CMOS 16-Bit

Heavy Load

Bidirectional Transceivers

Product Features:

• Very high-speed bidirectional transceiver

for 150 pF heavy loads

• 16-bit switching in 5.5ns max

• Vcc=5V±10%

• Hysteresis on all inputs

• Balanced output drivers: ±24 mA

• Reduced system switching noise

• Typical VOLP (Output Ground Bounce) < 0.6V

at VCC = 5V, TA = 25°C

• Packages available:

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

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

• Device models available on request

Logic Block Diagram

Product Description:

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

duced in the Company’s advanced 0.6 micron CMOS technology,

achieving industry leading speed grades.

The PI74FCT162245MT is a 16-bit bidirectional transceivers

designed for asynchronous two-way communication between data

buses. The direction control input pin (xDIR) determines the

direction of data flow through the bidirectional transceiver. The

Direction and Output Enable controls are designed to operate these

devices as either two independent 8-bit transceivers or one 16-bit

transceiver. The output enable (OE) input, when HIGH, disables

both A and B ports by placing them in HIGH Z condition. It is

designed specifically for heavy load applications.

The PI74FCT162245MT 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.

1DIR

1A0

1A1

1A2

1A3

1A4

1A5

1A6

1A7

1OE

1B0

1B1

1B2

1B3

1B4

1B5

1B6

1B7

2DIR

2A0

2A1

2A2

2A3

2A4

2A5

2A6

2A7

2OE

2B0

2B1

2B2

2B3

2B4

2B5

2B6

2B7

1

PS2046A 03/12/96

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