STMicroelectronics | ST3243CPR

The ST3243CPR device consists of 3 drivers, 5 receivers and a dual charge-pump circuit. The device meets the requirements of EIA/TIA and V.28/V.24 communication standards providing high data rate capability. The receiver R2 is always active to implement a wake-up feature for serial port.

The ST3243C has a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0 V to 5.5 V supply with a dual charge pump. The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels. The Auto-power-down feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled.

Features:

• 1 μA supply current achieved when in autopower-down
• 250 kbps minimum guaranteed data rate
• Guaranteed 6 V/μs slew rate range
• Guaranteed mouse drive ability
• 0.1 μF external capacitors
• Meet EIA/TIA-232 specifications down to 3 V
• Available in SSOP-28

Applications:

• Notebook
• Subnotebook
• Palmtop computers
• Battery-powered equipment
• Hand-held equipment
• Peripherals and printers