DIN2

DOUT2

12

8

Powerdown

RIN1

16

20

15

PWRDOWN

ROUT1

DIN1

DOUT1

13

17

RIN2

9

10

ROUT2

1

EN

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

MAX3222

SLLS408H – JANUARY 2000 – REVISED OCTOBER 2016

MAX3222 3-V to 5.5-V Multichannel RS-232 Line Driver and Receiver With ±15-kV ESD

Protection

1

1 Features

1

•

RS-232 Bus-Pin ESD Protection Exceeds ±15 kV

Using Human-Body Model (HBM)

•

Meets or Exceeds the Requirements of

TIA/EIA-232-F and ITU v.28 Standards

•

Operates With 3-V to 5.5-V VCC Supply

•

Operates Up to 250 kbps

•

Two Drivers and Two Receivers

•

Low Standby Current: 1 µA Typical

•

External Capacitors: 4 × 0.1 µF

•

Accepts 5-V Logic Input With 3.3-V Supply

•

Alternative High-Speed Pin-Compatible Device

(1 Mbps)

–

SNx5C3222

2 Applications

•

Battery-Powered Systems

•

PDAs

•

Notebooks

•

Laptops

•

Palmtop PCs

•

Hand-held Equipment

3 Description

The MAX3222 consists of two line drivers, two line

receivers, and a dual charge-pump circuit with ±15-kV

ESD protection pin to pin (serial-port connection pins,

including GND). The device meets the requirements

of TIA/EIA-232-F and provides the electrical interface

between an asynchronous communication controller

and the serial-port connector. The charge pump and

four small external capacitors allow operation from a

single 3-V to 5.5-V supply. The device operates at

data signaling rates up to 250 kbit/s and a maximum

of 30-V/μs driver output slew rate.

The MAX3222 can be placed in the power-down

mode by setting PWRDOWN low, which draws only 1

μA from the power supply. When the device is

powered down, the receivers remain active while the

drivers are placed in the high-impedance state.

Receiver outputs also can be placed in the high-

impedance state by setting EN high.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

MAX3222CDW,

MAX322IDW

SOIC (20)

12.80 mm × 7.50 mm

MAX3222CDB,

MAX322IDB

SSOP (20)

7.20 mm × 5.30 mm

MAX3222CPW,

MAX322IPW

TSSOP (20)

6.50 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Block Diagram