MAX3221EIPWR Texas Instruments In Stock
MAX3221EIPWR is a 3V to 5.5V single-channel RS-232 transceiver IC by Texas Instruments with ±15kV ESD protection. Key specs: 1 driver / 1 receiver, 250kbps data rate, TSSOP-16 package, -40°C to +85°C industrial temperature range. From $0.99, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.9932(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ±15kV ESD protection on RS-232 I/O pins for robust industrial deployments
- Wide supply voltage range of 3V to 5.5V enabling direct use with 3.3V and 5V systems
- 250kbps maximum data rate supporting standard RS-232 serial communications
- Low-power shutdown mode with <1µA supply current for battery-powered applications
- Industrial temperature range -40°C to +85°C for harsh environment operation
Applications
MAX3221EIPWR is widely used in industrial automation equipment, PLCs, and embedded systems requiring reliable RS-232 serial communication between microcontrollers and peripheral devices. Its high ESD tolerance and wide supply voltage range make it ideal for handheld instruments, medical devices, and telecommunications equipment operating in electrically noisy environments. It is also commonly deployed in GPS modules, barcode scanners, and point-of-sale terminals where compact TSSOP packaging and low power consumption are critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the supply voltage range of the MAX3221EIPWR?
The MAX3221EIPWR operates from a supply voltage of 3V to 5.5V, making it compatible with both 3.3V and 5V logic systems without level-shifting circuitry. This wide range is ideal for mixed-voltage board designs.
What ESD protection does the MAX3221EIPWR provide?
The MAX3221EIPWR provides ±15kV ESD protection (Human Body Model) on all RS-232 transmitter outputs and receiver inputs, significantly reducing the risk of damage from electrostatic discharge during cable hot-plugging or in industrial environments.
What is the maximum data rate supported by the MAX3221EIPWR?
The MAX3221EIPWR supports a maximum data rate of 250kbps, which is well above the standard RS-232 requirement of 115.2kbps, making it suitable for high-speed serial communication in embedded and industrial applications.
What package does the MAX3221EIPWR come in and what are its dimensions?
The MAX3221EIPWR comes in a TSSOP-16 surface-mount package, which offers a compact footprint suitable for space-constrained PCB designs. The 'W' suffix denotes the wide TSSOP body, and it is available on tape-and-reel for automated assembly.
Can the MAX3221EIPWR replace the MAX3232 or SP3221 in existing designs?
The MAX3221EIPWR is pin-compatible with many industry-standard RS-232 transceivers including the SP3221E and similar single-channel devices. However, always verify pinout, supply voltage, and capacitor requirements against your specific layout before substituting in an existing design.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5430 | $3.54 |
| 10+ | $1.4014 | $14.01 |
| 25+ | $1.2744 | $31.86 |
| 100+ | $0.9932 | $99.32 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”