This document introduces ICL3207 and ICL3217 two low power RS-232 transceivers, which meet EIA/TIA-232 and V.28/V.24 specifications, even at VCC=3.0V. This series of products are fully compatible with 3.3V, mixed 3.3V and 5.0V and 5.0V systems, and are a lower power, pin-for-pin replacement for '207 and '237 type devices.
The ICL32X7 family (ICL3207/ICL3217) are low‑power RS‑232 transmitters/receivers that operate from a single +3 V to +5.5 V supply and guarantee a minimum data rate of 250 kbps. They are targeted at battery‑powered portable equipment such as PDAs, palmtops and notebook computers where standby power consumption is critical.
Key features include automatic power‑down (ICL3217 only), on‑chip charge pumps that require only four 0.1 µF external capacitors, latch‑up free operation, and 15 kV ESD protection. The document also contains ordering information, pin‑out diagrams, absolute maximum ratings, and mechanical dimensions for SSOP and SOIC packages.
| Operating Voltage Range | +3 V to +5.5 V |
|---|---|
| Supply Current (normal operation) | 0.3 mA |
| Automatic Powerdown Current (ICL3217) | ≈1 µA |
| ESD Protection | 15 kV Human Body Model |
| External Capacitors Required | Four 0.1 µF capacitors |
It operates from a single supply voltage of +3 V to +5.5 V.
Only four external 0.1 µF capacitors are required.