MAX3224E, MAX3225E, MAX3226E, MAX3227E, MAX3244E, MAX3245E ±15kV ESD保护、1µA、1Mbps、3.0V至5.5V、RS-232收发器，提供AutoShutdown Plus

快速浏览

技术文档

定购信息

更多信息

所有内容

概述

完整的数据资料 (PDF, 1.2MB)
英文

下载

The MAX3224E/MAX3225E/MAX3226E/MAX3227E/MAX3244E/MAX3245E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

All devices achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system.

The MAX3225E/MAX3227E/MAX3245E also feature MegaBaud™ operation, guaranteeing 1Mbps for high-speed applications such as communicating with ISDN modems. The MAX3224E/MAX3226E/MAX3244E guarantee 250kbps operation. The transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a 3.3V supply. The MAX3224E–MAX3227E feature a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

All devices are available in a space-saving TQFN, SSOP, and TSSOP (MAX3224E/MAX3225E/MAX3244E/MAX3245E) packages.

关键特性

应用/使用

For Space-Constrained Applications:
- MAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP
- MAX3222E/MAX3232E/MAX3241E†/MAX3246E: ±15kV ESD-Protected, Down to 10nA, +3.0V to +5.5V, Up to 1Mbps, True RS-232 Transceivers (MAX3246E Available in UCSP™)
For Low-Voltage or Data Cable Applications:
- MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins

	电池供电设备
	蜂窝电话
	手持式装置
	笔记本电脑、亚笔记本电脑与掌上电脑
	外设
	打印机

Key Specifications: RS-232 Line Driver/Receivers
Part Number	Supply Voltage (V)	Number of Tx	Number of Rx	Data Rate (kbps)	Typ. I_CC Current (mA)	Internal Charge Pump	Number of Ext. Caps	Nom. Cap. Value (µF)	ESD Protection (±kV)	Number of Rx Active in Shutdown	Package	Price^**
MAX3224E	3.3 5	2	2	250	0.3	Yes	4	0.1	15	2	PDIP/20 SSOP/20 THIN QFN/20 TSSOP/20	$1.41 @ 1k
MAX3225E		2	2	1,000						2	PDIP/20 SSOP/20 THIN QFN/20 TSSOP/20	$1.41 @ 1k
MAX3226E		1	1	250						2	SSOP/16 THIN QFN/16 TSSOP/16	$1.17 @ 1k
MAX3227E		1	1	1,000						2	SSOP/16 THIN QFN/16 TSSOP/16	$1.03 @ 1k
MAX3244E		3	5	250						5	SOIC/28 SSOP/28 TSSOP/28	$3.82 @ 1k
MAX3245E		3	5	1,000						5	SOIC/28 SSOP/28 THIN QFN/36 TSSOP/28	$3.82 @ 1k
See All RS-232 Line Driver/Receivers (144)

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.

†受美国专利#4,636,930、4,679,134、4,777,577、4,797,899、4,809,152、 4,897,774、4,999,761、5,649,210及其它正在申请的专利保护。