The ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, and ICL3243E are 3. 0V to 5. 5V powered RS-232 transmitters/receivers that meet ElA/TIA-232 and V. 28/V. 24 specifications, even at VCC = 3. 0V. Additionally, they provide ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are notebook and laptop computers in which the low operational power consumption and even lower standby power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic power-down functions (except for the ICL3232E), reduce the standby supply current to a 1µA trickle. Small footprint packaging and the use of small, low value capacitors ensure board space savings. Data rates greater than 250kbps are ensured at worst case load conditions. This family is fully compatible with 3. 3V-only systems, mixed 3. 3V and 5. 0V systems, and 5. 0V-only systems. The ICL324XE are 3-driver, 5-receiver devices that provide a complete serial port suitable for laptop or notebook computers. Both devices also include noninverting always-active receivers for “wake-up” capability. The ICL3221E, ICL3223E, and ICL3243E feature an automatic power-down function that powers down the on-chip power supply and driver circuits. Power-down occurs when an attached peripheral device is shut off or the RS-232 cable is removed, which conserves system power automatically without changes to the hardware or operating system. These devices power up again when a valid RS-232 voltage is applied to any receiver input.

Features

  • ESD protection for RS-232 I/O pins to ±15kV (IEC61000)
  • Drop-in replacements for the MAX3221E, MAX3222E, MAX3223E, MAX3232E, MAX3241E, MAX3243E, and SP3243E
  • The ICL3221E is a low-power, pin-compatible upgrade for the 5V MAX221E
  • The ICL3222E is a low-power, pin-compatible upgrade for the 5V MAX242E and SP312E
  • The ICL3232E is a low-power upgrade for the HIN232E, ICL232, and pin-compatible competitor devices
  • RS-232 compatible with VCC = 2.7V
  • Meets EIA/TIA-232 and V.28/V.24 specifications at 3V
  • Latch-up free
  • On-chip voltage converters require only four external 0.1µF capacitors at VCC = 3.3V
  • Manual and automatic power-down features
  • Ensured mouse driveability (ICL324xE only)
  • Receiver hysteresis for improved noise immunity
  • Ensured minimum data rate : 250kbps
  • Wide power supply range : single +3V to +5.5V
  • Low supply current in power-down state : 1µA
  • Pb-free (RoHS compliant)

Applications

  • Any System Requiring RS-232 Communication Ports Battery Powered, Hand-Held, and Portable Equipment Laptop Computers, Notebooks, Palmtops Modems, Printers and other Peripherals Digital Cameras Cellular/Mobile Phones

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SSOP Tube 705
Availability
Active SSOP Reel 1000
Availability
Active SOICW Tube 260
Availability
Active SOICW Reel 1000
Availability
Active TSSOP Tube 500
Availability
Active TSSOP Reel 2500
Availability
Active SSOP Tube 705
Availability
Active SSOP Reel 1000
Availability
Active TSSOP Tube 500
Availability
Active TSSOP Reel 2500
Availability
Active TSSOP Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, ICL3243E Datasheet Datasheet PDF 907 KB
Application Notes & White Papers
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Application Note PDF 178 KB
How to Simplify Industrial PC Interfaces 简体中文 White Paper PDF 920 KB
AN1992: Isolating RS-232 Interfaces with High-Speed Digital Optocouplers Application Note PDF 395 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses Application Note PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks Application Note PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E Application Note PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences Application Note PDF 440 KB
AN1977: Transient Voltage Suppressors: Operation and Features Application Note PDF 365 KB
AN1980: Ground Potential Differences: Origin and Remedies Application Note PDF 375 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers Application Note PDF 369 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks Application Note PDF 338 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers Application Note PDF 500 KB
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers Application Note PDF 372 KB
PCNs & PDNs
PCN21006 - Alternate assembly facility of the listed Renesas TSSOP packaged products Product Change Notice PDF 131 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
PCN11116 - Alternate Manufacturing Site for Assembly of the Listed Intersil 28l SSOP Products - ANST (Wuxi CR Micro-Assembly Technology Ltd.) Product Change Notice PDF 180 KB
PCN10024 - Alternate Manufacturing Site for the Listed Intersil ICL32* TSSOP Packaged Products - ANST (Wuxi CR Micro-Assembly Technology Ltd.) Product Change Notice PDF 49 KB
Downloads
icl3243e Model IBS 59 KB
Other
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
PA18022 - Datasheet specification change for listed Renesas ICL3221E*, ICL3222E*, ICL3223E*, ICL3232E*, ICL3241E*, ICL3243E* and ISL83386E Products Product Advisory PDF 238 KB
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Other PDF 293 KB