MAX3110EEWI datasheet(1/32 Pages) MAXIM

Part #	MAX3110EEWI

Description	SPI/MICROWIRE-Compatible UART and 짹15kV ESDProtected RS-232 Transceivers with Internal Capacitors

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

General Description

The MAX3110E/MAX3111E combine a full-featured uni-

versal asynchronous receiver/transmitter (UART) with

±15kV ESD-protected RS-232 transceivers and inte-

grated charge-pump capacitors into a single 28-pin

package for use in space-, cost-, and power-con-

strained applications. The MAX3110E/MAX3111E also

feature an SPI™/QSPI™/MICROWIRE™-compatible

serial interface to save additional board space and

microcontroller (µC) I/O pins.

A proprietary low-dropout output stage enables the

2-driver/2-receiver interface to deliver true RS-232 per-

formance down to VCC = +3V (+4.5V for MAX3110E)

while consuming only 600µA. The receivers remain

active in a hardware/software-invoked shutdown, allow-

ing external devices to be monitored while consuming

only 10µA. Each device is guaranteed to operate at up

to 230kbps while maintaining true EIA/TIA-232 output

voltage levels.

The MAX3110E/MAX3111E’s UART includes a crystal

oscillator and baud-rate generator with software-pro-

grammable divider ratios for all common baud rates

from 300baud to 230kbaud. The UART features an 8-

word-deep receive FIFO that minimizes processor over-

head and provides a flexible interrupt with four

maskable sources. Two control lines (one input and

one output) are included for hardware handshaking.

The UART and RS-232 functions can be used together

or independently since the two functions share only

supply and ground connections (the MAX3110E/

MAX3111E are hardware- and software-compatible

with the MAX3100 and MAX3222E).

________________________Applications

Point-of-Sale (POS) Devices

Handy-Terminals

Telecom/Networking Diagnostic Ports

Industrial Front-Panel Interfaces

Hand-Held/Battery-Powered Equipment

Features

o Integrated RS-232 Transceiver and UART in a

Single 28-Pin Package

o SPI/QSPI/MICROWIRE-Compatible µC Interface

o Internal Charge-Pump Capacitors—

No External Components Required!

o True RS-232 Operation Down to VCC = +3V

(MAX3111E)

o ESD Protection for RS-232 I/O Pins

±15kV—Human Body Model

±8kV—IEC 1000-4-2, Contact Discharge

±15kV—IEC 1000-4-2, Air-Gap Discharge

o Single-Supply Operation

+5V (MAX3110E)

+3.3V (MAX3111E)

o Low Power

600µA Supply Current

10µA Shutdown Supply Current with

Receiver Interrupt Active

o Guaranteed 230kbps Data Rate

o Hardware/Software-Compatible with MAX3100

and MAX3222E

SPI/MICROWIRE-Compatible UART and ±15kV ESD-

Protected RS-232 Transceivers with Internal Capacitors

________________________________________________________________

Maxim Integrated Products

1

67

8

RS-232

DB-9

CS

SCLK

SPI

DIN

DOUT

µP

U

A

R

T

9

12

3

4

5

IRQ

MAX3110E

MAX3111E

19-1494; Rev 0; 7/99

Typical Application Circuit

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

Ordering Information continued at end of data sheet.

Pin Configuration appears at end of data sheet.

†

Covered by U.S. Patent numbers 4,636,930; 4,679,134;

4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and

other patents pending.

PART

MAX3110ECWI

MAX3110ECNI

0°C to +70°C

TEMP.

RANGE

PIN-

PACKAGE

28 Wide SO

28 Plastic DIP

VCC

(V)

5

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