The ICL3225E, ICL3227E, and ICL3245E devices 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. 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 PDAs, Palmtops, and notebook and laptop computers where the low operational power consumption and even lower standby power consumption are critical. Efficient on-chip charge pumps coupled with manual and enhanced automatic powerdown functions, 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 1Mbps 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 ICL3245E is a 3-driver, 5-receiver device that provides a complete serial port suitable for laptop or notebook computers. It also includes a noninverting always-active receiver for “wake-up” capability. The ICL3225E, ICL3227E, and ICL3245E feature an enhanced automatic powerdown function that powers down the on-chip power supply and driver circuits. Powerdown occurs when all receiver and transmitter inputs detect no signal transitions for a period of 30s. These devices power back up automatically whenever they sense a transition on any transmitter or receiver input.

Features

  • Pb-free (RoHS compliant)
  • ESD protection for RS-232 I/O pins to ±15kV (IEC61000)
  • Manual and enhanced automatic powerdown features
  • Drop in replacements for MAX3225E, MAX3227E, MAX3245E
  • 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
  • Ensured mouse driveability (ICL3245E)
  • “Ready to Transmit” indicator output (ICL3225E/ICL3227E)
  • Receiver hysteresis for improved noise immunity
  • Ensured minimum data rate: 1Mbps
  • Low skew at transmitter/receiver input trip points: 10ns
  • Ensured minimum slew rate: 24V/µs
  • Wide power supply range: single +3V to +5.5V
  • Low supply current in powerdown state: 1µA

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 SSOP Tube 705
Availability
Active SSOP Reel 1000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ICL3225E, ICL3227E, ICL3245E Datasheet Datasheet PDF 422 KB
Application Notes & White Papers
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Application Note PDF 178 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
AN1976: Important Transient Immunity Tests for RS-485 Networks Application Note PDF 338 KB
AN1977: Transient Voltage Suppressors: Operation and Features Application Note PDF 365 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers Application Note PDF 369 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers Application Note PDF 500 KB
AN1980: Ground Potential Differences: Origin and Remedies Application Note PDF 375 KB
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers Application Note PDF 372 KB
How to Simplify Industrial PC Interfaces 简体中文 White Paper PDF 920 KB
PCNs & PDNs
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
Other
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB

Downloads

Title language Type Format File Size Date
Models
icl3245e Model IBS 59 KB