SP3238EEA-L/TR

The SP3238E device meets the EIA/TIA-232 and ITU-T V.28/V.24 communication protocols and can be implemented in battery-powered, portable, or hand-held applications such as notebook or palmtop computers. The SP3238E devices feature proprietary and patented (U.S. - 5,306,954) on-board charge pump circuitry that generates ±5.5V RS-232 voltage levels from a single +3.0V to +5.5V power supply. The SP3238E devices can guarantee a data rate of 250kbps fully loaded. The SP3238E is a 5-driver/3-receiver device, ideal for portable or hand-held applications. The SP3238E includes one complementary always-active receiver that can monitor an external device (such as a modem) in shutdown. This aids in protecting the UART or serial controller IC by preventing forward biasing of the protection diodes where Vcc may be disconnected. The SP3238E device is an ideal choice for power sensitive designs. The SP3238E device features AUTO ON-LINE® circuitry which reduces the power supply drain to a 1μA supply current. In many portable or hand-held applications, an RS-232 cable can be disconnected or a connected peripheral can be turned off. Under these conditions, the internal charge pump and the drivers will be shut down. Otherwise, the system automatically comes online. This feature allows design engineers to address power saving concerns without major design changes.

Key features

• Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply
• Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source
• AUTO ON-LINE® circuitry automatically wakes up from a 1μA shutdown
• Minimum 250Kbps data rate under load
• Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations
• Enhanced ESD Specifications: ±15KV Human Body Model, ±15KV IEC61000-4-2 Air Discharge, ±8KV IEC61000-4-2 Contact Discharge
• Now Available in Lead Free Packaging