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 µA 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’s 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 — I
CC
20 mA maximum
n
SHUTDOWN mode — I
CX
10 µA maximum
n
One Receiver (R5) active during SHUTDOWN
n
Operates up to 128 kbps — Lap-Link
®
Compatible
n
Flow through pinout
n
4V/µs 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
®
is a registered trademark of Traveling Software.
© 2000 National Semiconductor Corporation
DS011734
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
