MAX3072EESA 查看數據表（PDF） - Maxim Integrated

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MAX3072EESA

+3.3V / 15kV ESD-Protected / Fail-Safe / Hot-Swap / RS-485/RS-422 Transceivers

Maxim Integrated 

+3.3V, ±15kV ESD-Protected, Fail-Safe,

Hot-Swap, RS-485/RS-422 Transceivers

Pin Description (continued)

MAX3070E

MAX3073E

MAX3076E

MAX3071E

MAX3074E

MAX3077E

PIN

MAX3072E

MAX3075E

MAX3078E

MAX3079E

NAME

FUNCTION

FULL-DUPLEX

DEVICES

HALF-

DUPLEX

DEVICES

FULL- HALF-

DUPLEX DUPLEX

MODE MODE

12

8

—

12

—

A Noninverting Receiver Input

—

—

—

—

12

A Receiver Input Resistors*

—

—

6

—

—

A

Noninverting Receiver Input and Noninverting Driver

Output

Receiver Phase. Connect RXP to GND or leave

—

—

—

13

13

RXP unconnected for normal transmitter phase/polarity.

Connect to VCC to invert receiver phase/polarity.

14

1

8

14

14

VCC

Positive Supply VCC = 3.3V ±10%. Bypass VCC to GND

with a 0.1µF capacitor.

1, 8, 13

—

—

—

—

N.C. No Connect. Not internally connected. Can be connected

to GND.

*MAX3079E only. In half-duplex mode, the driver outputs serve as receiver inputs. The full-duplex receiver inputs (A and B) still have a

1/8-unit load, but are not connected to the receiver.

MAX3070E/MAX3073E/MAX3076E

TRANSMITTING

INPUTS

RE

DE

DI

OUTPUTS

Z

Y

X

1

1

0

1

X

1

0

1

0

0

0

X

High-Z

High-Z

1

0

X

Shutdown

RECEIVING

INPUTS

RE

DE

A, B

0

X

≥ -50mV

0

X

≤ -200mV

0

X

Open/

shorted

1

1

X

1

0

X

OUTPUT

RO

1

0

1

High-Z

Shutdown

Function Tables

MAX3071E/MAX3074E/MAX30767E

INPUT

DI

1

0

TRANSMITTING

OUTPUTS

Z

Y

0

1

1

0

INPUTS

A, B

≥ -50mV

≤ -200mV

Open/shorted

RECEIVING

OUTPUT

RO

1

0

1

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