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LTC1385

3.3V Low Power

EIA/TIA-562 Transceiver

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FEATURE

DESCRIPTIO

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Operates from a Single 3.3V Supply

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ESD Protection Over

±10kV

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Uses Small Capacitors: 0.1

µF

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Operates to 120kBaud

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Output Overvoltage Does Not Force Current

Back into Supplies

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EIA/TIA-562 I/O Lines Can Be Forced to

±25V

Without Damage

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Pin Compatible with LT1180A

The LTC1385 is an ultra-low power, 2-driver/2-receiver

EIA / TIA-562 transceiver which operates from a single

3.3V supply. The charge pump requires only four space-

saving 0.1

µF capacitors.

The transceiver operates in one of three modes: Normal,

only 200

µAintheunloadedcondition.IntheDriverDisable

mode, the charge pump is turned off, the driver outputs

are forced into three-state, both receivers are kept active,

The LTC1385 is fully compliant with all data rate and

overvoltage EIA / TIA-562 specifications. The transceiver

can operate up to 120kbaud with a 1000pF, 3k

Ω load.

Both driver outputs and receiver inputs can be forced to

±25V without damage, and can survive multiple ±10kV

ESD strikes.

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APPLICATI

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Notebook Computers

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Palmtop Computers

APPLICATI

TYPICAL

Quiescent and Shutdown Supply Current

vs Temperature

2-Drivers/2-Receivers with Shutdown

and Driver Disable

TEMPERATURE (°C)

600

500

400

300

200

100

0

20

40

60

LTC1385 • TA02

80

0

1.2

1.0

0.8

0.6

0.4

0.2

0

QUIESCENT

CURRENT

SHUTDOWN

CURRENT

–20

LTC1385 • TA01

0.1

µF

0.1

µF

0.1

µF

0.1

µF

LTC1385

DRIVER DISABLE

2

4

5

6

12

11

13

10

18

14

9

16

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LOGIC INPUT

LOGIC INPUT

LOGIC OUTPUT

LOGIC OUTPUT

ON/OFF

17

3

7

15

562 OUTPUT

VCC = 3.3V

562 OUTPUT

562 INPUT

562 INPUT

5k

5k

300k

300k

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