Product Description

 

The UM3221E/UM3222E/UM3232E series are 3.3V powered RS-232 transceivers intended for portable or hand-held applications. The UM3221E has one driver/one receiver while the UM3222E/UM3232E has two drivers/two receivers. The device features low power consumption, high data-rate capability and enhanced ESD protection. The ESD rating of all transmitter outputs and receiver inputs is ±15kV for both human body mode and IEC61000-4-2 air discharge methods, and over ±8kV for IEC61000-4-2 contact discharge methods. The logic I/O pins are protected to ±2kV for human body mode.

Small footprint, low profile package and the use of small 0.1μF capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed at worst case load conditions. This family is fully compatible with 3.3V-only systems, mixed 1.8V and 3.3V systems, mixed 3.3V and 5.0V systems and 5.0V-only systems.

The UM3221E/UM3222E has a low-power shutdown mode where the devices’ driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1μA that reduces power consumption in battery-powered portable systems or other low power consumption systems. The UM3221E/UM3222E receivers remain active in shutdown mode, allowing monitoring of external **s.

The UM3221E/UM3222E and UM3232E are pin, package, and functionally compatible with the industry standard MAX242 and MAX 232, respectively.

 

Features

 

- Meets True EIA/TIA-232-F Standards from a +3.0V to +5.5V Power Supply

- Meets EIA/TIA-562 Levels of ±3.7V with Supply Voltages as Low as 2.7V

- Enhanced ESD Specifications:

 ±15kV Human Body Mode

 ±15kV IEC61000-4-2 Air Discharge Mode

 ±8kV IEC61000-4-2 Contact Discharge Mode

- 1μA Low Power Shutdown (UM3221E/UM3222E)

- 250kbps Minimum Transmission Rate

- Guaranteed 30V/μs Max Slew Rate

- Latch-Up Performance Exceeds 200mA

- Hot Swap and Fail-Safe

- I/O Logic Compatible with 1.8V Logic @ VCC=3.3V

Applications

 

- Industrial Automation Equipments

- Battery-Powered Equipments

- Hand-Held Equipments

- POS Terminals

創達佳科技有限公司是一家專業代理和銷售世界各大品牌電子元器件的大型公司。公司成立于2010年,經過多年的發展分支機構遍布**,除了位于深圳的總公司外,還在美洲、歐洲、中國香港及北京、上海、浙江設立了分公司。長期以來公司始終堅持“客戶至上,品質*一”理念,在業界享有盛譽。經營領域涉及：消費類電子,**,電腦及其周邊設備,通信設備,工業控制,汽車電子,安防,電源控制,新能源,醫療設備,儀器儀表等。
目前我們代理和經銷的品牌有300個,分銷產品線**過3000條。在**有三大倉庫（分布在海外,中國香港,深圳）,保有上億資金的現貨庫存。從產品、技術,服務及賬期方面都可以為客戶提供全方面的支持。