GENERAL DESCRIPTION

The ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E line of driver/receiver products is designed to fully meet the EIA-232 standard while operating with a single 2.7 V to 3.6 V power supply. The devices feature an on-board charge pump dc-to-dc converter, eliminating the need for dual power supplies. This dc-to-dc converter contains a voltage tripler and a voltage inverter that internally generates positive and negative supplies from the input 3 V power supply. The dc-to-dc converter operates in Green Idle? mode, whereby the charge pump oscillator is gated on and off to maintain the output voltage at ±7.25 V under varying load conditions. This minimizes the power consumption and makes these products ideal for battery-powered portable devices.

FEATURES

Green Idle power-saving mode

Single 2.7 V to 3.6 V power supply

Operates with 3 V logic

0.1 μF to 1 μF charge pump capacitors

Low EMI

Low power shutdown: 20 nA

Full RS-232 compliance

460 kb/s data rate

One receiver active in shutdown (ADM3307E/ADM3311E/ADM3312E/ADM3315E)

Two receivers active in shutdown (ADM3310E)

ESD >15 kV IEC 1000-4-2 on RS-232 I/Os

ESD >15 kV IEC 1000-4-2 on CMOS and RS-232 I/Os (ADM3307E)

Qualified for automotive applications

APPLICATIONS

Mobile phone handsets/data cables

Laptop and notebook computers

Printers

Peripherals

Modems

PDAs/Hand-Held Devices/Palmtop Computers