Renesas Electronics Corporation

The ICL232 is a dual RS-232 transmitter/receiver interface circuit that meets all ElA RS-232C and V. 28 specifications. It requires a single +5V power supply, and features two onboard charge pump voltage converters which generate +10V and -10V supplies from the 5V supply. The drivers feature true TTL/CMOS input compatibility, slewrate- limited output, and 300Ω power-off source impedance. The receivers can handle up to +30V, and have a 3kΩ to 7kΩ input impedance. The receivers also have hysteresis to improve noise rejection.

The ICL3207E is a 3V to 5. 5V powered RS-232 transmitter/receiver that meets EIA/TIA-232 and V. 28/V. 24 specifications, even at VCC= 3. 0V. The ICL3207E features five transmitters and three receivers. It provides ±15kV ESD protection (IEC61000-4-2 Air Gap) and ±15kV Human Body Model protection on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are ISDN Terminal Adapters (TAs), PDAs, Palmtops, peripherals, and notebook and laptop computers where the low operational power consumption and even lower standby power consumption is critical. 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. The ICL3207E is fully compatible with 3. 3V only systems, mixed 3. 3V and 5V systems, and 5V only systems. The ICL3207E is a lower power, pin-for-pin replacement for the MAX207E, HIN207E, and HIN237E.