Texas Instruments MAX211 Bedienungsanleitung

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MAX211 5V Multichannel RS-232 Line Driver and Receiver with ±15kV ESD Protection

1 Features

•RS-232 bus-pin ESD protection exceeds ±15kv

using human-body model (HBM)

•Meets or exceeds the requirements of TIA/

EIA-232-F and ITU v.28 standards

•Operates at 5V V

CC

supply

•Four drivers and five receivers

•Operates up to 120kbit/s

•Low supply current in shutdown mode: 5µA typical

•External capacitors: 4 × 0.1µF

•Latch-up performance exceeds 100mA per JESD

78, class II

2 Applications

•Battery-powered systems

•PDAs

•Notebooks

•Laptops

•Palmtop PCs

•Hand-held equipment

3 Description

The MAX211 device consists of four line drivers,

five line receivers, and a dual charge-pump

circuit with ±15kV 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 5V

supply. The devices operate at data signaling rates up

to 120kbit/s and a maximum of 30V/µs driver output

slew rate.

The MAX211 has both shutdown (SHDN) and enable

control (EN). In shutdown mode, the charge pumps

are turned off, V+ is pulled down to V

CC

, V− is pulled

to GND, and the transmitter outputs are disabled. This

reduces supply current typically to 1µA. EN is used to

put the receiver outputs into the high-impedance state

to allow wired-OR connection of two RS-232 ports.

It has no effect on the RS-232 drivers or the charge

pumps.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

MAX211

DB (SSOP, 28)10.2mm × 7.8mm

DW (SOIC, 28)17.9mm × 10.3mm

(1)For more information, see Section 11.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

Logic Diagram (Positive Logic)

MAX211

SLLS567F – MAY 2003 – REVISED JULY 2024

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.

Produktspezifikationen