MAX3221：1µA电源电流、+3V至+5.5V、真RS-232收发器，带有AutoShutdown

The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™ feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V. A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout transmitter combine to deliver true RS-232 performance from a single +3.0V to +5.5V supply. The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of the 20-pin 2-driver/2-receiver MAX3223. The MAX3243 is a 3-driver/5-receiver with a complementary always-active receiver for external monitoring in a variety of 28 pin packages. Please see order information table for package offerings.

关键特性

Integrated Charge Pump Circuitry Simplifies Power Requirements
- Eliminates the Need for a ±12V Supply
- Operation From a Single +3.3V or +5V Supply
1µA Supply Current in Shutdown Mode Saves Power
- AutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30μs
- Software Control Option for Shutdown

应用

电池供电设备
外设

数据手册DataSheet

语言	下载文件	备注
英文	MAX3221-MAX3243.pdf	Rev 9; 02/2015

关键参数

Part Number	V_SUPPLY (V)	Tx	Rx	Data Rate (kbps)	I_CC (mA)	Internal Charge Pump	Ext. Caps	Cap. Value (µF)	Rx Active in Shutdn	Package/Pins	Budgetary Price
Part Number	V_SUPPLY (V)	Tx	Rx	min	typ	Internal Charge Pump	Ext. Caps	nom	Rx Active in Shutdn	Package/Pins	See Notes
MAX3221	3.3 5	1	1	120	0.3	Yes	4	0.1	1	SSOP/16 TSSOP/16	$1.67 @1k
MAX3223		2	2						2	PDIP(N)/20 SSOP/20 TSSOP/20	$2.56 @1k
MAX3243		3	5						1	SOIC(W)/28 SSOP/28 TSSOP/28	$4.45 @1k

技术资料

质量和环境数据

MAX3221.pdf

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX3221CAE	停止供货	MAX3221CAE+	SSOP,；16引脚；50mm²	0°C至+70°C	RoHS/无铅：否
MAX3221CAE+	生产中		SSOP,；16引脚；50mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3221CAE+T	生产中		SSOP,；16引脚；50mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3221CAE-T	停止供货	MAX3221CAE+T	SSOP,；16引脚；50mm²	0°C至+70°C	RoHS/无铅：否
MAX3221CUE	停止供货	MAX3221CUE+	TSSOP,；16引脚；33.4mm²	0°C至+70°C	RoHS/无铅：否
MAX3221CUE+	生产中		TSSOP,；16引脚；33.4mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3221CUE+T	生产中		TSSOP,；16引脚；33.4mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3221CUE-T	停止供货	MAX3221CUE+T	TSSOP；16引脚	0°C至+70°C	参考数据资料
MAX3221EAE	停止供货	MAX3221EAE+	SSOP,；16引脚；50mm²	-40°C至+85°C	RoHS/无铅：否
MAX3221EAE+	生产中		SSOP,；16引脚；50mm²	-40°C至+85°C	RoHS/无铅：无铅
型号	状况	推荐替代产品	封装：类型引脚占位面积封装图编码/变更 *	温度	RoHS/无铅？
MAX3221EAE+T	生产中		SSOP,；16引脚；50mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX3221EAE-T	停止供货	MAX3221EAE+T	SSOP,；16引脚；50mm²	-40°C至+85°C	RoHS/无铅：否
MAX3221EUE	停止供货	MAX3221EUE+	TSSOP,；16引脚；33.4mm²	-40°C至+85°C	RoHS/无铅：否
MAX3221EUE+	生产中		TSSOP,；16引脚；33.4mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX3221EUE+T	生产中		TSSOP,；16引脚；33.4mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX3221EUE-T	停止供货	MAX3221EUE+T	TSSOP；16引脚	-40°C至+85°C	参考数据资料