1

LTC1346A

1346afa

10Mbps DCE/DTE

V.35 Transceiver

■

Single Chip Provides Complete Differential Signal

Interface for V.35 Port

■

Drivers and Receivers Will Withstand Repeated

±10kV ESD Pulses

■

Operates from ±5V Supplies

■

10Mbaud Transmission Rate

■

Meets CCITT V.35 Specification

■

■

Selectable Transmitter and Receiver Configurations

■

Independent Driver/Receiver Enables

■

Transmitter Maintains High Impedance When

Disabled, Shut Down or with Power Off

■

Transmitters Are Short-Circuit Protected

The LTC

the differential clock and data signals for a V.35 interface

from ±5V supplies. Combined with an external resistor

termination network and an LT

for the control signals, the LTC1346A forms a complete low

power DTE or DCE V.35 interface port.

The LTC1346A features three current output differential

transmitters and three differential receivers. The transceiver

can be configured for DTE or DCE operation or shutdown

using three Select pins. In the Shutdown mode, the supply

current is reduced to below 1µA.

The LTC1346A transceiver operates up to 10Mbaud. All

transmitters feature short-circuit protection. Both the

transmitter outputs and the receiver outputs can be forced

into a high impedance state. The transmitter outputs and

receiver inputs feature ±10kV ESD protection.

■

Modems

■

Telecommunications

■

Data Routers

5V

2

1

4

1

2

24

23

12

DTE

DCE

10

11

16

15

0.1

mF

LTC1346A

LTC1346A

BI

627T500/1250

BI

627T500/1250

BI TECHNOLOGIES

627T500/1250 (SOIC)

5V

0.1

mF

2

T

TXD (103)

SCTE (113)

TXC (114)

RXC (115)

RXD (104)

GND (102)

T

5

3

4

22

21

10

11

9

14

13

DX

RX

T

T

9

14

13

18

17

1

4

2

24

23

T

T

10

12

11

16

15

12

7

8

3

5

4

22

21

T

T

7

8

11

8

7

10

9

14

13

3

5

6

8

7

6

20

19

3

T

T

RX

RX

RX

12

LTC1346 • TA01

DX

DX

DX

50

W

=

125

W

T

50

W

+

–5V

0.1

mF

1

–5V

0.1

mF

+

DX

RX

Clock and Data Signals for V.35 Interface

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

, LTC and LT are registered trademarks of Linear Technology Corporation.