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Texas Instruments MAX3222EIPWR
- Part No.:
- MAX3222EIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX3222EIPWR.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,815
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Product details
Overview
MAX3222EIPWR from Texas Instruments is a 3V–5.5V dual-channel RS-232 line driver and receiver IC with ±15kV IEC 61000-4-2 contact ESD protection, 500 kbit/s data rate, 1 μA standby current, and integrated charge-pump circuitry requiring only four 0.1 μF external capacitors. It serves as the physical-layer interface between UART controllers and DB9/DB25 serial connectors in industrial and portable systems.
For engineers reviewing the MAX3222EIPWR datasheet, MAX3222EIPWR pinout, MAX3222EIPWR application, or MAX3222EIPWR equivalent, key selection criteria include its TSSOP-20 package, –40°C to +85°C industrial temperature grade, dual-driver/dual-receiver architecture, low-power shutdown mode, and compatibility with 3.3V logic inputs under 3.3V supply.
Technical Context
The MAX3222EIPWR implements a dual charge-pump topology generating ±5.5V rails from a single 3V–5.5V supply, enabling compliant RS-232 voltage levels without split supplies. Its drivers deliver ±5.4V output swing into 3kΩ loads with 30 V/μs max slew rate, while receivers accept ±25V input ranges and provide TTL/CMOS-compatible outputs.
Functional modes are controlled via two dedicated logic inputs: PWRDOWN (active-low driver disable) places drivers in high-impedance and reduces supply current to 1 μA, while EN (active-low receiver enable) independently gates receiver outputs. Both control pins tolerate 5V logic even at 3.3V VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 5.5V - Enables direct integration with 3.3V and 5V system rails without level-shifting or auxiliary supplies. |
| Data Rate | Up to 500 kbit/s - Supports standard asynchronous serial communication including UART-based diagnostics and control links. |
| ESD Protection | ±15kV HBM, ±8kV IEC 61000-4-2 contact - Protects serial port pins against handling and system-level electrostatic discharge events. |
| Standby Current | 1 μA typical - Allows battery-powered or energy-sensitive applications to maintain serial connectivity with minimal quiescent drain. |
| External Capacitors | 4 × 0.1 μF ceramic - Reduces BOM count and board space versus legacy RS-232 transceivers requiring larger or polarized capacitors. |
| Logic Input Compatibility | 5V-tolerant DIN/EN/PWRDOWN at 3.3V VCC - Eliminates need for external level translators when interfacing with mixed-voltage microcontrollers. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial environments including factory automation, networking equipment, and ruggedized computing. |
Pinout & Package
TSSOP-20 (PW) package, 6.5 mm × 6.4 mm body size, 0.65 mm lead pitch, exposed pad optional per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Receiver enable input | Active-low control: drives ROUT1/ROUT2 high-impedance when high; enables normal receiver operation when low. |
| 13 (DIN1), 12 (DIN2) | Driver logic inputs | Accept 3.3V/5V CMOS/TTL logic; no external pull-ups required; 5V-tolerant at 3.3V VCC. |
| 17 (DOUT1), 8 (DOUT2) | RS-232 driver outputs | Deliver ±5.4V compliant RS-232 signals; high-impedance during PWRDOWN assertion. |
| 16 (RIN1), 9 (RIN2) | RS-232 receiver inputs | Accept ±25V RS-232 voltage range; include internal hysteresis (0.3V) for noise immunity on noisy cables. |
| 15 (ROUT1), 10 (ROUT2) | Receiver logic outputs | Drive CMOS/TTL loads; VOH ≥ VCC–0.1V, VOL ≤ 0.4V at 1.6mA sink current. |
| 20 (PWRDOWN) | Driver disable input | Active-low: disables drivers, disables charge pump, reduces ICC to 1μA; receivers remain active unless EN=high. |
| 2 (C1+), 4 (C1−), 5 (C2+), 6 (C2−) | Charge-pump capacitor connections | Interface with four 0.1μF external capacitors to generate ±VCC-derived RS-232 voltage rails. |
| 19 (VCC), 18 (GND), 3 (V+), 7 (V−) | Power and charge-pump nodes | V+ and V− are internal charge-pump outputs; VCC and GND are primary supply connections. |
| 11, 14 (NC) | No internal connection | Unbonded pins; must be left floating or grounded per PCB layout best practices for signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual RS-232 transceiver channel | Integrates two independent drivers and two receivers in one TSSOP-20 package, reducing footprint versus discrete solutions. |
| Single-supply operation | Eliminates need for ±12V supplies by generating compliant RS-232 voltage levels from 3V–5.5V using internal charge pumps. |
| Industrial-grade ESD protection | Meets IEC 61000-4-2 ±8kV contact and ±15kV air-gap requirements on RIN/DOUT pins-critical for field-deployed serial interfaces. |
| Independent power-down control | PWRDOWN and EN pins allow selective disabling of drivers or receivers, enabling flexible power management in multi-interface systems. |
| 5V-tolerant logic inputs | Supports direct connection to 5V microcontrollers or FPGAs without level shifters-even when VCC = 3.3V-reducing component count. |
Applications
| Industrial PCs | Wired Networking Equipment |
|---|---|
|
Use Scenario: Serial debug port and configuration interface on DIN-rail mounted PLCs and HMIs operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Physical-layer RS-232 transceiver bridging UART peripherals to external modems, barcode scanners, or legacy instrumentation. Use Value: ±15kV ESD protection ensures robustness against ground-loop transients and operator handling; –40°C to +85°C rating supports uncontrolled ambient deployment. |
Use Scenario: Console port interface on managed switches, routers, and PoE injectors requiring reliable local configuration access. IC Role / Device Role / Timing Role: Bidirectional RS-232 level translator enabling firmware updates, CLI access, and out-of-band management via RJ45-to-DB9 adapters. Use Value: 500 kbit/s data rate accommodates fast boot-log capture and firmware upload; low 1μA shutdown current extends uptime during maintenance windows. |
| Notebooks & Mobile Terminals | Hand-held Test Equipment |
|
Use Scenario: Embedded serial interface in ruggedized notebooks used for field service, asset tracking, and mobile data collection. IC Role / Device Role / Timing Role: Low-power RS-232 bridge connecting embedded microcontroller UARTs to external GPS modules, RFID readers, or barcode engines. Use Value: TSSOP-20 package minimizes PCB area; 3.3V operation aligns with battery-powered SoC voltage domains; 5V-tolerant inputs simplify interconnect with accessory peripherals. |
Use Scenario: Portable oscilloscopes, multimeters, and signal analyzers requiring isolated serial communication for PC-based data logging and remote control. IC Role / Device Role / Timing Role: Isolated RS-232 physical layer (when paired with digital isolators) providing galvanic separation between test head and host PC. Use Value: Four 0.1μF capacitors reduce bill-of-materials cost and improve reliability over electrolytic alternatives; ±25V receiver input range tolerates cable-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3232EIPWR | Same pinout, identical TSSOP-20 package, but rated for 0°C to +70°C (commercial) vs. –40°C to +85°C (industrial). | Lacks extended temperature qualification; unsuitable for outdoor or industrial cabinet deployments where ambient exceeds 70°C. | Select MAX3222EIPWR when industrial temperature range and full IEC 61000-4-2 ESD compliance are mandatory. |
| SP3222ET-L | Pin-compatible TSSOP-20 device with ±15kV HBM ESD, but only ±8kV IEC contact rating and no IEC air-gap specification. | Lower ESD robustness margin may require additional board-level protection in harsh ESD environments. | Choose MAX3222EIPWR where certified IEC 61000-4-2 compliance is required for CE/UL certification or medical-grade equipment. |
Compared with MAX3232EIPWR and SP3222ET-L, the MAX3222EIPWR uniquely combines industrial temperature range, full IEC 61000-4-2 certification, and 5V-tolerant logic inputs-making it the preferred choice for mission-critical serial interfaces demanding long-term reliability across environmental extremes.
Availability
MAX3222EIPWR is available at Aetrix Electronics and suitable for industrial PCs, wired networking equipment, and hand-held test equipment requiring stable component supply, long-lifecycle support, and guaranteed industrial-grade specifications.
Supply support for MAX3222EIPWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and communications markets.
The MAX3222E product line delivers robust, single-supply RS-232 transceivers optimized for industrial and portable applications where ESD resilience, low power, and small footprint are critical design constraints.
FAQ
What is the operating temperature range of the MAX3222EIPWR?
The MAX3222EIPWR is specified for operation from –40°C to +85°C, qualifying it for industrial environments such as factory automation, outdoor networking gear, and ruggedized mobile terminals. This extended temperature range is confirmed in TI's official packaging and orderable information table, where MAX3222EIPWR is explicitly listed with "Op temp (°C): –40 to 85".
Does the MAX3222EIPWR support 5V logic inputs when powered from a 3.3V supply?
Yes, the MAX3222EIPWR accepts 5V logic levels on DIN1, DIN2, EN, and PWRDOWN pins even when VCC = 3.3V. This 5V-tolerant input capability is documented in Section 5.2 (Recommended Operating Conditions) of the datasheet, eliminating the need for external level translators in mixed-voltage systems.
How many external capacitors does the MAX3222EIPWR require, and what values are recommended?
The MAX3222EIPWR requires exactly four external 0.1 μF ceramic capacitors (C1+, C1−, C2+, C2−) for charge-pump operation. These values are validated for both 3.3V and 5V supply conditions per Figure 8-1 and Section 5.2 of the datasheet, ensuring compliant RS-232 voltage generation and stable operation.
What ESD protection ratings does the MAX3222EIPWR meet?
The MAX3222EIPWR meets ±15kV HBM (Human Body Model), ±8kV IEC 61000-4-2 contact discharge, and ±15kV IEC 61000-4-2 air-gap discharge on RIN1, RIN2, DOUT1, and DOUT2 pins. These values are explicitly listed in Sections 5.1 and 5.2 of the TI datasheet SLLS708E.
Can the MAX3222EIPWR be placed in a low-power shutdown state, and what is the resulting current draw?
Yes, asserting PWRDOWN low places the MAX3222EIPWR in shutdown mode, reducing supply current to 1 μA typical. During shutdown, drivers enter high-impedance, the charge pump is disabled, and receivers remain active unless EN is also asserted high. This behavior is defined in Section 3 (Description) and Table 7-1 of the datasheet.
MAX3222EIPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- RS232
- Number of Drivers/Receivers:
- 2/2
- Duplex:
- Full
- Receiver Hysteresis:
- 300 mV
- Data Rate:
- 500kbps
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
MAX3222EIPWR FAQ
1.How can I place an order for MAX3222EIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3222EIPWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX3222EIPWR reliable?
The price and inventory of MAX3222EIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3222EIPWR is usually 5 days.
3.What payment methods are accepted for MAX3222EIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3222EIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3222EIPWR?
MAX3222EIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3222EIPWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX3222EIPWR?
For technical support, including MAX3222EIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3222EIPWR requirements.
6.How does Aetrix verify that MAX3222EIPWR is sourced from the original manufacturer or authorized distributors?
All MAX3222EIPWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX3222EIPWR meets industry standards.
7.What is the process for return or replacement of MAX3222EIPWR?
All MAX3222EIPWR units undergo pre-shipment inspection (PSI). If there is an issue with MAX3222EIPWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX3222EIPWR part is unused and in its original packaging.
Return procedure for MAX3222EIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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