Product details

Drivers per package 1 Receivers per package 1 Logic voltage (Min) (V) 3.3 Data rate (Max) (kbps) 250 Main supply voltage (Nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 Vout (Typ) (V) 5.4
Drivers per package 1 Receivers per package 1 Logic voltage (Min) (V) 3.3 Data rate (Max) (kbps) 250 Main supply voltage (Nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 Vout (Typ) (V) 5.4
SSOP (DB) 16 48 mm² 6.2 x 7.8 TSSOP (PW) 16 22 mm² 5 x 4.4 TSSOP (PW) 16 22 mm² 4.4 x 5
  • ESD protection for RS-232 pins
    • ±15-kV Human-body model (HBM)
    • ±8 kV (IEC 61000-4-2, Contact discharge)
    • ±15 kV (IEC 61000-4-2, Air-gap discharge)
  • Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
  • Operates with 3-V to 5.5-V VCC upply
  • Operates up to 250 kbit/s
  • One driver and one receiver
  • Low standby current: 1 µA typical
  • Accepts 5-V logic input with 3.3-V supply
  • Auto-power-down feature automatically disables drivers for power savings
  • Alternative high-speed device (1 Mbit/s)
    • SN75C3221E and SN65C3221E
  • ESD protection for RS-232 pins
    • ±15-kV Human-body model (HBM)
    • ±8 kV (IEC 61000-4-2, Contact discharge)
    • ±15 kV (IEC 61000-4-2, Air-gap discharge)
  • Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
  • Operates with 3-V to 5.5-V VCC upply
  • Operates up to 250 kbit/s
  • One driver and one receiver
  • Low standby current: 1 µA typical
  • Accepts 5-V logic input with 3.3-V supply
  • Auto-power-down feature automatically disables drivers for power savings
  • Alternative high-speed device (1 Mbit/s)
    • SN75C3221E and SN65C3221E

The MAX3221E is a single driver, single receiver RS-232 solution operating from a single VCC supply. The RS-232 pins provide IEC 61000-4-2 ESD protection. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.

Flexible control options for power management are available. Auto-power down disables driver and charge pump when the receiver is disconnected or the remote driver is power down. The drivers can be manually enabled or disabled. INVALID output goes low when receiver input is unconnected or power off.

The MAX3221E is a single driver, single receiver RS-232 solution operating from a single VCC supply. The RS-232 pins provide IEC 61000-4-2 ESD protection. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.

Flexible control options for power management are available. Auto-power down disables driver and charge pump when the receiver is disconnected or the remote driver is power down. The drivers can be manually enabled or disabled. INVALID output goes low when receiver input is unconnected or power off.

Download

Similar products you might be interested in

open-in-new Compare products
Same functionality with different pin-out to the compared device.
TRS3221E ACTIVE 3- to 5.5-V single channel 250kbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection Optimized for a smaller footprint in a 3mm x 3mm QFN package
TRSF3221E ACTIVE 3- to 5.5-V single channel 1Mbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection Pin-to-pin upgrade with higher 1-Mbps data rate

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet MAX3221E 3-V to 5.5-V Single-Channel RS-232 Line Driver/Receiver With ±15-kV IEC ESD Protection datasheet (Rev. C) 16 Jul 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Reference designs

TIDEP0036 — Reference Design using TMS320C6657 to Implement Efficient OPUS Codec Solution

The TIDEP0036 reference design provides an example of the ease of running TI optimized Opus encoder/decoder on the TMS320C6657 device. Since Opus supports a a wide range of bit rates, frame sizes and sampling rates, all with low delay, it has applicability for voice communications, networked audio (...)
Package Pins Download
SSOP (DB) 16 View options
TSSOP (PW) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos