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DS14C335 +3.3V Supply TIA/EIA-232 3 x 5 Driver/Receiver

March 2000

DS14C335

+3.3V Supply TIA/EIA-232 3 x 5 Driver/Receiver

General Description

The DS14C335 is three driver, five receiver device which

conforms to TIA/EIA-232-E and CCITT V.28 standard speci-

fications. This device employs an internal DC-DC converter

to generate the necessary output levels from a +3.3V power

supply. A SHUTDOWN (SD) mode reduces the supply cur-

rent to 10 碌A(chǔ) maximum. In the SD mode, one receiver is ac-

tive, allowing ring indicator (RI) to be monitored. PC Board

space consumption is minimized by the availability of Shrink

Small Outline Packaging (SSOP).

This device鈥檚 low power requirement and small footprint

makes it an ideal choice for Laptop and Notebook applica-

tions.

Features

n

Conforms to TIA/EIA-232-E and CCITT V.28

specifications

n

Operates with single +3.3V power supply

n

Low power requirement 鈥?I

CC

20 mA maximum

n

SHUTDOWN mode 鈥?I

CX

10 碌A(chǔ) maximum

n

One Receiver (R5) active during SHUTDOWN

n

Operates up to 128 kbps 鈥?Lap-Link

廬

Compatible

n

Flow through pinout

n

4V/碌s minimum Slew Rate guaranteed

n

Inter-operates with +5V UARTs

n

Available in 28-lead SSOP EIAJ Type II package

Connection Diagram

DS14C335

Functional Diagram

DS011734-1

Order Number DS14C335MSA

See NS Package Number MSA28

DS011734-2

Lap-Link

廬

is a registered trademark of Traveling Software.

漏 2000 National Semiconductor Corporation

DS011734

www.national.com

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