4

LTC1349

in the SHUTDOWN mode. This pin should be decoupled

with a 0.1

µF ceramic capacitor.

GND: Ground Pin.

ON/OFF: TTL/CMOS Compatible SHUTDOWN Pin. A logic

low puts the device in SHUTDOWN mode, with receivers

4 and 5 kept alive and the supply current equal to 35

µA. All

driver outputs and other receiver outputs are in high

impedance state. This pin can not float.

1V. This pin requires an external capacitor C = 0.1

µF for

charge storage. The capacitor may be tied to ground or 5V.

TYPICAL PERFOR A CE CHARACTERISTICS

Driver Short-Circuit Current

Driver Leakage in SHUTDOWN

TEMPERATURE (°C)

0

60

20

16

14

12

10

8

6

4

2

0

LTC1349 • TPC04

20

70

10

30

40

50

3 DRIVERS LOADED

1 DRIVER LOADED

TEMPERATURE (°C)

0

60

45

40

35

30

25

20

15

10

5

0

LTC1349 • TPC05

20

70

10

30

40

50

TEMPERATURE (°C)

–40

0

4

8

10

12

40

20

LTC1349 • TPC06

6

080

14

16

18

–20

60

20

100

+

–

Receiver Short-Circuit Current

Receiver Output Waveforms

Driver Output Waveforms

TEMPERATURE (°C)

–40

10

30

60

0

40

60

LTC1349 • TPC07

20

50

40

–20

20

80

100

–

+

DRIVER

OUTPUT

DRIVER

OUTPUT

INPUT

RECEIVER

OUTPUT

INPUT

LTC1349 • TPC08

LTC1349 • TPC09

PI FU CTIO S

leled into common capacitors. For large numbers of de-

vices, increasing the size of the shared common storage

capacitors is recommended to reduce ripple.

1.5V. This pin requires an external capacitor C = 0.1

µF for

charge storage.

pins require two external capacitors C = 0.1

µF: one from

charge pump efficiency, the capacitor’s effective series

resistance should be less than 20

Ω.