描述 Description

The Intersil ICL32X7 devices are 3.0V to 5.5V powered RS-232 transmitters (five)/receivers (three) which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Targeted applications are ISDN Terminal Adaptors, PDAs, Palmtops, peripherals, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. The ICL3217's efficient on-chip charge pumps, coupled with an automatic powerdown function, reduces 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, and is a lower power, pin-for-pin replacement for '207 and '237 type devices.
The ICL3217 features 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. The ICL3217 powers up again when a valid RS-232 voltage is applied to any receiver input.

特性 Features

? Pb-Free Plus Anneal Available (RoHS Compliant) (see Ordering Information)
? ±15kV ESD Protected (Human Body Model)
? 5V Lower Power Replacement for MAX207, HIN207, HIN237
? 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
? Automatic Powerdown (ICC = 1μA, ICL3217 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

應用 Application

? Any System Requiring RS-232 Communication Ports
? Battery Powered, Hand-Held, and Portable Equipment
? Laptop Computers, Notebooks, Palmtops
? Modems, Printers and other Peripherals
? ISDN Terminal Adaptors and Set Top Boxes