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SP3222EUEY-L/TR

3.0-5.5V RS-232 2Tx/2Rx transceiver, 1Mbps, ±15kV ESD, 1µA shutdown, TSSOP-20

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Manufacturer Part：

SP3222EUEY-L/TR

Package：

TSSOP-20 (6.50 x 4.40 mm)

Brand：
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Description

Product Overview

The SP3222EUEY-L/TR from MaxLinear (formerly Exar/Sipex) is a 3.0V to 5.5V RS-232 2-driver/2-receiver transceiver with low-power shutdown. It meets true EIA/TIA-232-F standards from a single 3.0V to 5.5V supply using an integrated charge pump requiring only 0.1µF capacitors. The device supports data rates up to 1000kbps and provides ±15kV ESD protection on RS-232 lines.

Key Specifications

Supply Voltage 3.0V to 5.5V
Number of Drivers/Receivers 2/2
Data Rate 1000kbps
ESD Rating (HBM) ±15kV
ESD Rating (IEC 61000-4-2 Air) ±15kV
ESD Rating (IEC 61000-4-2 Contact) ±8kV
Shutdown Current 1µA (typical)
External Capacitors 4 x 0.1µF
Operating Temperature -40°C to +85°C
Package TSSOP-20

Features

  • Meets true EIA/TIA-232-F standards
  • 1000kbps data rate
  • 1µA low-power shutdown with receivers active
  • Operates from single 3.0V to 5.5V supply
  • Interoperable with RS-232 down to 2.7V
  • Enhanced ESD: ±15kV HBM, ±15kV IEC Air, ±8kV IEC Contact
  • Integrated high-efficiency charge pump

Applications

  • Notebook and palmtop computers
  • Handheld instruments
  • Battery-powered RS-232 interfaces
  • Industrial communication ports

The SP3222EUEY-L/TR is a 2-driver/2-receiver RS-232 transceiver from MaxLinear designed for portable and handheld applications. It operates from a single 3.0V to 5.5V supply using an integrated high-efficiency charge pump that requires only four 0.1µF external capacitors. The device supports data rates up to 1000kbps for high-speed RS-232 communication. The SP3222EU variant includes a low-power shutdown mode that reduces supply current to less than 1µA while keeping receivers active for wake-up detection. Enhanced ESD protection of ±15kV (HBM and IEC Air) and ±8kV (IEC Contact) on RS-232 pins provides robust field reliability.

The SP3222EUEY-L/TR uses a patented four-phase charge pump to generate ±5.5V supplies from a single 3.0V to 5.5V Vcc input, enabling true RS-232 output levels without dual supplies. The charge pump operates discontinuously, enabling when output voltages fall below 5.5V magnitude and disabling when above, minimizing power consumption. Drivers convert TTL/CMOS logic levels to RS-232 compliant output levels with slew rate control for low EMI. Receivers convert RS-232 input levels back to TTL/CMOS with 300mV hysteresis for noise immunity on long cables. Internal 5kΩ pulldown resistors on receiver inputs ensure a defined HIGH output when inputs are floating. The SHDN pin disables drivers and charge pump for 1µA standby, while EN pin tri-states receiver outputs independently.

Pin Name Type Description
1-3 C1+, V+, C1- Power Charge pump capacitor 1 connections
4-6 C2+, C2- Power Charge pump capacitor 2 connections
7 VCC Power Supply voltage (3.0V to 5.5V)
8 R1IN Input RS-232 receiver 1 input
9 R2IN Input RS-232 receiver 2 input
10 GND Ground Device ground
11 R2OUT Output Receiver 2 TTL output
12 R1OUT Output Receiver 1 TTL output
13 T1IN Input Driver 1 TTL input
14 T2IN Input Driver 2 TTL input
15 SHDN Input Shutdown control; LOW = shutdown mode
16 EN Input Receiver enable; HIGH = tri-state receiver outputs
17 T2OUT Output Driver 2 RS-232 output
18 T1OUT Output Driver 1 RS-232 output
19-20 V-, NC Power Negative charge pump output, No connect
  • Portable Computers: Provides complete RS-232 serial port for laptop and tablet connectivity with 1µA shutdown preserving battery life during idle periods
  • Handheld Instruments: Enables serial communication from battery-powered multimeters and data loggers with 3.0V minimum supply operation and ±15kV ESD withstand for field reliability
  • Industrial RS-232 Interfaces: Converts MCU UART to RS-232 levels for PLC and factory equipment communication with robust ESD protection and 300mV receiver hysteresis for noisy environments
Model Manufacturer ESD Shutdown Key Difference
SP3232EUEY-L/TR MaxLinear ±15kV No No shutdown mode, otherwise identical
MAX3232ESE+T ADI ±15kV Auto Auto-shutdown, SOIC-16 package
ST3232EBPR ST ±15kV No TSSOP-16, fewer pins
SP3222ECY-L/TR MaxLinear ±15kV Yes Same in TSSOP-20, commercial temp range
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
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  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

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We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
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  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
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  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

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2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
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  • Economy Logistics: Air freight and sea freight for large-volume cargo
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  • Air Freight: 7 – 12 working days
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    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

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4. Customs & Liability Statement

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  2. Handling of Lost or Damaged Goods
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  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

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5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
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2. Classified Professional Packaging

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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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