MAX222 Datasheet

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

MAX220鈥揗AX249

Table 1a. MAX245 Control Pin Configurations

ENT

0

0

1

1

ENR

0

1

0

1

OPERATION STATUS

Normal Operation

Normal Operation

Shutdown

Shutdown

TRANSMITTERS

All Active

All Active

All 3-State

All 3-State

All Active

All 3-State

All Low-Power Receive Mode

All 3-State

RECEIVERS

Table 1b. MAX245 Control Pin Configurations

ENT

0

0

ENR

0

1

OPERATION

STATUS

Normal Operation

Normal Operation

TRANSMITTERS

TA1鈥揟A4

All Active

All Active

TB1鈥揟B4

All Active

All Active

RECEIVERS

RA1鈥揜A5

All Active

RA1鈥揜A4 3-State,

RA5 Active

All Low-Power

Receive Mode

RA1鈥揜A4 3-State,

RA5 Low-Power

Receive Mode

RB1鈥揜B5

All Active

RB1鈥揜B4 3-State,

RB5 Active

All Low-Power

Receive Mode

RB1鈥揜B4 3-State,

RB5 Low-Power

Receive Mode

1

0

Shutdown

All 3-State

All 3-State

1

1

Shutdown

All 3-State

All 3-State

Table 1c. MAX246 Control Pin Configurations

ENA

0

0

ENB

0

1

OPERATION

STATUS

Normal Operation

Normal Operation

TRANSMITTERS

TA1鈥揟A4

All Active

All Active

TB1鈥揟B4

All Active

All 3-State

RECEIVERS

RA1鈥揜A5

All Active

All Active

RA1鈥揜A4 3-State,

RA5 Active

RA1鈥揜A4 3-State,

RA5 Low-Power

Receive Mode

RB1鈥揜B5

All Active

RB1鈥揜B4 3-State,

RB5 Active

All Active

RB1鈥揜B4 3-State,

RA5 Low-Power

Receive Mode

1

0

Shutdown

All 3-State

All Active

1

1

Shutdown

All 3-State

All 3-State

12

______________________________________________________________________________________

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