ICL3243

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 V_CC = 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 0.1F 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/s
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . . .1A




Application

• 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




Pinout

Specifications

V_CC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . ....... . . . . . -0.3V to 6V
V+ to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . ....... . . . . . . -0.3V to 7V
V- to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . ........ . . . . . +0.3V to -7V
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
Input Voltages
T_IN, FORCEOFF, FORCEON, EN, SHDN . . . . . ........... . . . -0.3V to 6V
R_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . ±25V
Output Voltages
T_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . ±13.2V
R_OUT, INVALID. . . . . . . . . . . . . . . . . . . . . .............. . . -0.3V to V_CC +0.3V
Short Circuit Duration
T_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . ........ . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . ................. . . See Specification Table




Description

The Intersil  ICL3243 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 1A 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 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 ICL3243 3V family.