5

LT1341

CC

HARA TERISTICS

A

TYPICALPERFOR

CE

Receiver Output Waveforms

Receiver Short-Circuit Current

Driver Output Waveforms

LT1341 • TPC12

DRIVER OUTPUT

INPUT

DRIVER OUTPUT

PI FU CTIO S

with a 0.1

µF ceramic capacitor close to the package pin.

Insufficient supply bypassing can lead to low output drive

levels and erratic charge pump operation.

GND: Ground Pin.

ON/OFF: A TTL/CMOS logic low puts the device in the low

power shutdown mode. All of the drivers and four receiv-

ers go to a high impedance state. Receiver RX5 remains

active while the transceiver is in shutdown. The trans-

ceiver consumes only 60

µA of supply current while in

shutdown. A logic high fully enables the transceiver.

DRIVER DISABLE: This pin provides an alternate control

for the charge pump and RS232 drivers. A logic high on

this pin shuts down the charge pump and places all drivers

LT1341 • TPC13

Driver Short-Circuit Current

TEMPERATURE (

°C)

–55

20

25

30

25

75

LT1341 • TPC10

15

10

–25

0

50

100

125

5

0

+

–

in a high impedance state. All receivers remain active

under these conditions. Floating the driver disable pin or

driving it to a logic low level fully enables the transceiver.

Supply current drops to 3mA when in driver disable mode.

A logic low on the ON/OFF pin supersedes the state of the

DRIVER DISABLE pin.

1.5V. This pin requires an external charge storage capaci-

tor C

capacitors may be used to reduce supply ripple. With

leled into common capacitors. For large numbers of

transceivers, increasing the size of the storage capaci-

tors is recommended to reduce ripple.

RX5 OUTPUT

RX1 TO RX4

OUTPUT

INPUT

TEMPERATURE (

°C)

–55

0

20

50

0

50

75

LT1341 • TPC11

10

40

30

–25

25

100

125

+

–

+

–