sp304ct Exar Corporation, sp304ct Datasheet - Page 7

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sp304ct

Manufacturer Part Number

sp304ct

Description

Rs-232/rs-422 Line Drivers/receivers

Manufacturer

Exar Corporation

Datasheet

1.SP304CT.pdf (12 pages)

Current page: 7 of 12
Download datasheet (113Kb)

FIGURE 3: SP304 CONTROL LOGIC CONFIGURATION

SIGNAL PROCESSING EXCELLENCE

SELECTION

SELECT A:

SELECT B:

NON–

LOOPBACK

(LB = 1)

LOOPBACK

(LB=0)

Corporation

TOA*

TOA*

TOB

TOB

RIB

RIB

RIA

RIA

TOA

TOA

TOB

TOB

RIA

RIA

RIB

RIB

RS-232 DRIVER

* Tri–state Output

LOGIC VALUE

2

1

1

2

2

1

1

2

2

1

1

2

2

1

1

2

0

0

ROA

ROA

TIA

TIA

ROB

ROB

TIB

TIB

ROB

ROB

TIB

TIB

ROA

ROA

TIA

TIA

1

2

1

2

1

2

1

2

2

1

2

1

2

1

2

1

TOA*

TOA*

TOB*

TOB*

RIB

RIB

TOA

TOA

TOB

TOB

RIA

RIA

RIA

RIA

RIB

RIB

LOGIC VALUE

RS-232 RECEIVER

2

1

2

1

1

2

1

2

2

1

1

2

2

1

1

2

0

1

ROA

ROA

TIA

TIA

ROB

TIB

ROA

ROA

TIA

TIA

ROB

TIB

1

2

1

2

1

1

1

2

1

2

1

1

TOB

TOB

TOA*

TOA*

RIA

RIA

RIB

RIB

TOB

TOB

RIB

RIB

TOA

TOA

RIA

RIA

LOGIC VALUE

RS-422 RECEIVER

2

1

2

1

1

2

1

2

2

1

1

2

2

1

1

2

1

0

ROB

ROB

TIB

TIB

ROA

TIA

ROB

ROB

TIB

TIB

ROA

TIA

1

2

1

1

2

2

1

1

1

2

1

1

TOB*

TOB*

TOA*

TOA*

RIB

RIB

RIA

RIA

TOA

TOA

TOB

TOB

RIA

RIA

RIB

RIB

LOGIC VALUE

2

1

2

1

RS-422 DRIVER

1

2

1

2

2

1

1

2

2

1

1

2

1

1

ROA

TIA

ROB

TIB

ROA

ROB

TIA

TIB

1

1

1

83

1

1

1

1

1

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