ISL3333 查看數據表（PDF） - Renesas Electronics

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ISL3333

3.3V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers

Renesas Electronics 

ISL3332, ISL3333

TABLE 3. ISL3333 FUNCTION TABLE

SEL1 or 2 ON/OFF

0

1

INPUTS

RECEIVER

OUTPUTS

RXEN 1 DEN 1

SPA

SPB

or 2

or 2 DE 1 or 2 RA

RB

X

X

0

0

N.A.

ON

ON

DRIVER

OUTPUTS

Y

Z

DRIVER

CHARGE DATA

PUMPS RATE

(NOTE 2) (Mbps)

MODE

High-Z High-Z ON

0.46 RS-232

0

1

X

X

0

1

N.A.

ON

ON

ON

ON

ON

0.46 RS-232

0

1

X

X

1

0

N.A. High-Z High-Z High-Z High-Z ON

0.46 RS-232

0

1

X

X

1

1

N.A. High-Z High-Z ON

ON

ON

0.46 RS-232

X

0

X

X

X

X

X

High-Z High-Z High-Z High-Z OFF

N.A. Shutdown

1

1

X

X

0

N.A.

0

ON High-Z * High-Z High-Z OFF

N.A. RS-485

1

1

0

0

0

N.A.

1

ON High-Z * ON

ON

OFF

0.46 RS-485

1

1

0

1

0

N.A.

1

ON High-Z * ON

ON

OFF

0.115 RS-485

1

1

1

0

0

N.A.

1

ON High-Z * ON

ON

OFF

20 RS-485

1

1

1

1

0

N.A.

1

ON High-Z * ON

ON

OFF

20 RS-485

1

1

X

X

1

N.A.

0

High-Z High-Z * High-Z High-Z OFF

N.A. RS-485

1

1

0

0

1

N.A.

1

High-Z High-Z * ON

ON

OFF

0.46 RS-485

1

1

0

1

1

N.A.

1

High-Z High-Z * ON

ON

OFF

0.115 RS-485

1

1

1

0

1

N.A.

1

High-Z High-Z * ON

ON

OFF

20 RS-485

1

1

1

1

1

N.A.

1

High-Z High-Z * ON

ON

OFF

20 RS-485

NOTE:

2. Charge pumps are off if SEL1 = SEL2 = 1, or if ON/OFF = 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge pumps

are on.

ISL3333 Truth Tables (FOR EACH PORT)

RS-232 TRANSMITTING MODE

INPUTS

OUTPUTS

SEL1 or 2 ON/OFF DEN1 or 2 DY

DZ

Y

Z

0

1

1

0

0

1

1

0

1

1

0

1

1

0

0

1

1

1

0

0

1

0

1

1

1

1

0

0

0

1

0

X

X High-Z High-Z

0

0

X

X

X High-Z High-Z

RS-485 TRANSMITTING MODE

INPUTS

OUTPUTS

DATA

RATE

SEL1 ON/ DE

or 2 OFF 1 or 2 SPA SPB DY

Y

1

1

1

0 0 0/1 1/0

Z Mbps

0/1 0.46

1

1

1

0 1 0/1 1/0

0/1 0.115

1

1

1

1 X 0/1 1/0

0/1

20

1

1

0

X X X High-Z High-Z N.A.

1

0

X

X X X High-Z High-Z N.A.

RS-232 RECEIVING MODE

INPUTS

OUTPUT

RXEN 1

SEL1 or 2 ON/OFF or 2

A

0

1

0

0

B

RA RB

0

1

1

0

1

0

0

1

1

0

0

1

0

1

0

0

1

0

1

0

1

1

0

0

0

1

0

Open Open

1

1

0

1

1

X

X High-Z High-Z

0

0

X

X

X High-Z High-Z

RS-485 RECEIVING MODE

INPUTS

OUTPUT

SEL1

or 2

1

RXEN 1

ON/OFF or 2

1

0

B-A

 -40mV

RA RB *

1 High-Z

1

1

0

 -200mV

0 High-Z

1

1

0 Open or Shorted 1 High-Z

together

1

1

1

X

High-Z High-Z

1

0

X

X

High-Z High-Z

* Internally pulled high through a 40k resistor.

FN6362 Rev 0.00

May 27, 2008

Page 4 of 26

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