MAX3110E, MAX3111E SPI™/MICROWIRE™兼容的UART及±15kV ESD保护、RS-232收发器,内置电容

数据资料

完整的数据资料 (PDF, 424kB)
英文

概述

The MAX3110E/MAX3111E combine a full-featured universal asynchronous receiver/transmitter (UART) with ±15kV ESD-protected RS-232 transceivers and integrated charge-pump capacitors into a single 28-pin package for use in space-, cost-, and power-constrained 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 performance down to V_CC = +3V (+4.5V for MAX3110E) while consuming only 600µA. The receivers remain active in a hardware/software-invoked shutdown, allowing 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-programmable divider ratios for all common baud rates from 300baud to 230kbaud. The UART features an 8-word-deep receive FIFO that minimizes processor overhead 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).

关键特性 应用/使用

Integrated RS-232 Transceiver and UART in a Single 28-Pin Package
SPI/QSPI/MICROWIRE-Compatible µC Interface
Internal Charge-Pump Capacitors-No External Components Required!
True RS-232 Operation Down to V_CC= +3V (MAX3111E)
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

Single-Supply Operation

+5V (MAX3110E)
+3.3V (MAX3111E)

Low Power

600µA Supply Current
10µA Shutdown Supply Current with
Receiver Interrupt Active

Guaranteed 230kbps Data Rate
Hardware/Software-Compatible with MAX3100 and MAX3222E
SPI/QSPI/MICROWIRE-compatible serial interface; 8-word receive FIFO; +5V supply (MAX3110E)
+3.3V Supply (MAX3111E)

手持/电池供电装置

手持终端

工业前面板接口

销售终端机(POS)设备

电信/网络诊断端口

Key Specifications: SPI/Microwire-Compatible UARTs
Part Number	µP Interface	Typ. Supply Current (mA)	Supply Voltage (V)	Min. Foot- print (mm²)	RoHS Available	Operating Temp. Range (°C)	Price^*
MAX3110E	SPI and Microwire Compatible	0.6	5	193	Yes	-40 to +85 0 to +70	$4.73 @ 1k
MAX3111E			3.3				$4.73 @ 1k
See All SPI/Microwire-Compatible UARTs (4)

Notes:
^*This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

图表

MAX3110E,MAX3111E:Typical Operating Circuit
典型工作电路