6

LTC1327

Driver Propagation Delay Timing

Receiver Propagation Delay Timing

SWITCHI G TI E WAVEFOR S

MANUFACTURER

PART NUMBER

COMPATIBLE

MIN

TYP

MAX

MIN

TYP

MAX

Linear Technology

LT1080

√

0.8

1.3

–

–

1.7

2.4

LT1137A

√

0.8

1.3

–

–

1.7

2.4

LT1330

√

0.8

1.3

–

–

1.7

2.4

LT1281

√

0.8

1.3

–

–

1.7

2.4

All Others

√

Texas Instruments

SN75189

√

0.65

1

1.25

0.9

1.3

1.6

SN75189A

√

0.65

1

1.25

1.55

1.9

2.25

MAX232

√

0.8

1.2

–

–

1.7

2.4

SN75C185

√

0.65

1

1.25

1.6

2.1

2.55

Maxim

MAX232A

√

0.8

1.3

–

–

1.8

2.4

MAX241

√

0.6

1.2

–

–

1.5

2.4

Sipex

SP232

√

0.8

1.2

–

–

1.7

2.4

SP301

√

0.75

–

1.35

1.75

2.5

Motorola

MC1489

√

0.75

–

1.25

1

–

1.5

MC1489A

√

0.75

0.8

1.25

1.75

1.95

2.25

National

DS1489

√

0.75

1

1.25

1

1.25

1.5

DS14C89A

√

0.5

–

1.9

1.3

–

2.7

S

APPLICATI

I FOR ATIO

The LTC1327 is compatible with RS232 parts. This table

shows some devices and the receiver input thresholds.

1.4V

0V

0V

0V

DR INPUT

DR OUTPUT

1.4V

1327 WF01

0.8V

0V

0V

RX INPUT

RX OUTPUT

1.3V

1.7V

1327 WF02

0V

INPUT LOW THRESHOLD

INPUT HIGH THRESHOLD