The ST3243B / ST3243C devices consist of 3 drivers, 5 receivers and a dual charge-pump circuit. The devices meet 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 ST3243B / ST3243C have 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 devices are 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 FORCEOFFis high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFFis set low, both drivers and receivers (expert R2B) are shut off, and supply current is reduced to 1 mA. Disconnecting the serial port or turning off the peripheral drives causes the auto-power-down condition to occur.
Auto-power-down can be disabled when FORCEON and FORCEOFFare high, and should be done when driving a serial mouse. With auto-power-down enabled, the device is activated automatically when a valid signal is applied to any receiver input.
Typical application are in notebook, sub-notebook, palmtop computers, battery-powered equipment, hand-held equipment, peripherals and printers
| 订购型号 | 产品状态 | 美金价格 | 数量 | 封装 | 包装形式 | 温度范围 | 材料声明 |
| ST3243CPR | Active | 0.914 | 1000 | SSOP 28 10.2x5.3 | Tape And Reel | 0 °C-70 °C | ST3243CPR |
| 下载 | 描述 | 版本 | 大小 |
| ST3243C | DS2153: 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down | 10 | 237KB |
