3

LTC1347

1347fa

Note 3: Supply current and leakage current measurements in Shutdown

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the device may be impaired.

Note 2: Supply current is measured with driver and receiver outputs

unloaded.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Slew Rate

8

30

V/µs

3

5

V/µs

Driver Propagation Delay

●

2

3.5

µs

(TTL to RS232)

●

2

3.5

µs

Receiver Propagation Delay

●

0.3

0.8

µs

(RS232 to TTL)

●

0.2

0.8

µs

AC CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

Driver Output Voltage

TEMPERATURE (°C)

–40

–8

–6

–2

0

2

40

10

1347 G01

–4

0

100

4

6

8

–20

20

60

80

OUTPUT HIGH

OUTPUT LOW

DATA RATE (kBAUD)

0

150

45

40

35

30

25

20

15

10

5

0

1347 G03

50

175

25

75

100

125

3 DRIVERS ACTIVE

Supply Current vs Data Rate

TEMPERATURE (˚C)

–40

1.8

2.0

2.2

20

60

1347 G02

1.6

1.4

–20

0

40

80

100

1.2

1.0

Receiver Input Thresholds

DC ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply Generator

8.0

V

7.5

V

– 8.0

V

– 7.0

V

Supply Rise Time

Shutdown to Turn-On

0.2

ms

Power Supply

●

0.6

1.1

mA

●

0.8

1.3

mA

Shutdown (Note 3)

●

80.0

120.0

µA

On/Off Threshold Low

●

1.4

0.8

V

On/Off Threshold High

●

2.0

1.4

V