مدار مجتمع (آی سی) آی‌سی واسط ارتباطی درایور، گیرنده و فرستنده‌گیرنده‌

Product Attributes

Introduction

The HD32xxE series are interface chips powered by 3V supply that meet EIA/TIA-232 and CCITT V.28/V.24 communication requirements, complying with low-power specifications. Each device integrates two drivers, two receivers, and a dedicated switched-capacitor voltage converter. The HD3220 features one driver and one receiver. These devices operate from a 3V to 5.5V supply, with a guaranteed data rate of 250kbit/s. ESD protection on all RS-232 I/O pins exceeds ±15kV air discharge and ±8kV contact discharge per EN61000-4-2. The HD3221E and HD3223E feature the proprietary XPWRSAVE (patented) function, which automatically shuts down the internal voltage converter and driver circuitry when the RS-232 cable is disconnected from the host interface or the connected peripheral device is powered off.

Features

• HD32xxE meets EIA/TIA-232F and CCITT V.28/V.24 communication requirements at 3.3V or 5V supply
• Low quiescent current: typical 0.5mA, maximum 1mA
• Low shutdown current: typical 1uA, maximum 10uA
• Guaranteed 250kbps data rate
• Dedicated switched-capacitor voltage converter
• Dedicated XPWRSAVE auto-standby power saving
• ESD protection on RS-232 I/O: ±15kV Human Body Model (HBM)
• ±15kV EN61000-4-2 Air Gap Discharge
• ±8kV EN61000-4-2 Contact Discharge

Applications

• Battery-powered and handheld devices
• Laptops and PDAs
• Cellular phone data cables
• Terminal adapters and POS terminals
• Modems