PI3B3383

3.3V, 5-Bit, 4-Port Bus Exchange

4

PS8580

10/18/01

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Applications

Logic Inputs

The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a 3.0V supply, the control or

select pins may be driven low to 0V and high to 3.6V. Driving the control or select pins Rail-toRail minimizes power consumption.

Power-Supply Sequencing

Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the input/

output or control pins.

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T

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3

8

3

3

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3

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2

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5

8

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0

4

–

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3

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2

OrderingInformation

Parameter Measurements

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

Notes:

2. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.

4. The outputs are measured one at a time with one transition per measurement.

Output

Control

(Low Level

Enabling)

0V

1.5V

1.5V

1.5V

1.5V

3V

0V

+0.3V

-0.3V

Output

Waveform 1

S1 at 6V

(see Note 2)

Output

Waveform 2

S1 at Open

(see Note 2)

3V

t

s

e

T1

S

P

n

e

p

O

L

P

t

/

L

Z

P

V

6

t

Z

H

P

t

/

H

Z

P

D

N

G

500

Ω

500

Ω

GND

6V

Open

S1

LOAD CIRCUIT

From Output

Under Test

CL = 50pF

(See note 1)

Input

3V

1.5V

1.5V

1.5V

1.5V

0V

Output