LTC1327

1

3.3V Micropower EIA/TIA-562

Transceiver

S

APPLICATI

s

Notebook Computers

s

Palmtop Computers

APPLICATI

TYPICAL

3-Drivers/5-Receivers with SHUTDOWN

DESCRIPTIO

S

FEATURE

s

Low Supply Current

300

µA

s

0.2

µA Supply Current in SHUTDOWN

s

ESD Protection

±10kV

s

Operates From a Single 3.3V Supply

s

Uses Small Capacitors

0.1

µF

s

Operates To 120k Baud

s

Three-State Outputs are High Impedance When Off

s

Output Overvoltage Does Not Force Current Back

Into Supplies

s

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

±25V

Without Damage

s

Flowthrough Architecture

The LTC1327 is an advanced low power, three-driver/five-

receiver EIA/TIA-562 transceiver. In the no load condition,

the supply current is only 300

µA. The charge pump only

requires four 0.1

µF capacitors.

In SHUTDOWN mode, the supply current is further re-

duced to 0.2

µA. All EIA/TIA-562 outputs assume a high

impedance state in SHUTDOWN and with the power off.

The LTC1327 is fully compliant with all data rate and

overvoltage EIA/TIA-562 specifications. The transceiver

can operate up to 120k Baud 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.

Supply Current vs Temperature

TEMPERATURE (°C)

–20

0

100

200

300

400

600

0

20

40

60

LTC1327 • TA02

80

500

0.2

0.4

0.6

0.8

1.2

1.0

QUIESCENT

CURRENT

SHUTDOWN

CURRENT

1327 TA01

C1

0.1

µF

LTC1327

1

2

3

4

5

6

7

8

9

10

11

12

13

14

DR1 OUT

RX1 IN

DR2 OUT

RX2 IN

RX3 IN

RX4 IN

DR4 OUT

RX5 IN

ON/OFF

28

27

26

25

24

23

22

21

20

19

18

17

16

15

C3

0.1

µF

DR1 IN

RX1 OUT

DR2 IN

RX2 OUT

RX3 OUT

RX4 OUT

DR3 IN

RX5 OUT

C2

0.1

µF

C4

0.1

µF

GND