ICL3243: 1mA Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers

The Intersil ICL32XX devices are 3.0V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic powerdown functions (except for the ICL3232), reduce the standby supply current to a 1µA trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed 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 ICL324X are 3-driver, 5-receiver devices that provide a complete serial port suitable for laptop or notebook computers. Both devices also include noninverting alwaysactive receivers for "wake-up" capability.

The ICL3221, ICL3223 and ICL3243, feature an automatic powerdown function which powers down the on-chip power-supply and driver circuits. This occurs when an attached peripheral device is shut off or the RS-232 cable is removed, conserving 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.

Table 1 summarizes the features of the devices represented by this data sheet, while Application Note AN9863 summarizes the features of each device comprising the ICL32XX 3V family.

Key Features
  • Pb-Free Plus Anneal Available as an Option (RoHS Compliant) (See Ordering Info)
  • 15kV ESD Protected (Human Body Model)
  • Drop in Replacements for MAX3221, MAX3222, MAX3223, MAX3232, MAX3241, MAX3243, SP3243
  • ICL3221 is Low Power, Pin Compatible Upgrade for 5V MAX221
  • ICL3222 is Low Power, Pin Compatible Upgrade for 5V MAX242, and SP312A
  • ICL3232 is Low Power Upgrade for HIN232/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
  • Manual and Automatic Powerdown Features (Except ICL3232)
  • Guaranteed Mouse Driveability (ICL324X Only)
  • Receiver Hysteresis For Improved Noise Immunity
  • Guaranteed Minimum Data Rate 250kbps
  • Guaranteed Minimum Slew Rate 6V/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
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/ReceiversPDF13 Nov 201495 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243 DatasheetPDF01 Sep 2015840 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ICL3243CA28 Ld SSOP0.22281240
ICL3243CA-T28 Ld SSOP T+R0.22281240
ICL3243CAZ28 Ld SSOP0.22282260RoHS
ICL3243CAZ-T28 Ld SSOP T+R0.22282260RoHS
ICL3243CB28 Ld SOIC0.75281240
ICL3243CB-T28 Ld SOIC T+R0.75281240
ICL3243CBZ28 Ld SOIC0.75283260RoHS
ICL3243CBZ-T28 Ld SOIC T+R0.75283260RoHS
ICL3243CV28 Ld TSSOP0.107281240
ICL3243CV-T28 Ld TSSOP T+R0.107281240
ICL3243CVZ28 Ld TSSOP0.107283260RoHS
ICL3243CVZ-T28 Ld TSSOP T+R0.107283260RoHS
ICL3243IA28 Ld SSOP0.22281240
ICL3243IA-T28 Ld SSOP T+R0.22281240
ICL3243IAZ28 Ld SSOP0.22282260RoHS
ICL3243IAZ-T28 Ld SSOP T+R0.22282260RoHS
Datasheet
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243 Datasheet 01 Sep 2015
Other
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers 13 Nov 2014
ICL3232
ICL3243 IBIS Model 06 Nov 2014
28 Ld TSSOP T+R ISL6443A
28 Ld SSOP T+R HIN213E
28 Ld SOIC HI-547