TEXAS INSTRUMENTS MAX3238CDB.. 线路接收器, RS232, 5驱动器, 3V-5.5电源, SSOP-28
The MAX3238 consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV ESD HBM protection pin to pin serial-port connection pins, including GND. The device meets the requirements of A/EIA-232-F and provides the electrical interface between notebook and subnotebook computer applications. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output ROUT1B, which allows applications using the ring indicator to transmit data while the device is powered down. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
Flexible control options for power management are featured when the serial port and driver inputs are inactive. The auto-powerdown plus feature functions when FORCEON is low and FORCEOFF\ is high. During this mode of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to 1 µA. By disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus occurs if there is no activity in the logic levels for the driver inputs. Auto-powerdown plus can be disabled when FORCEON and FORCEOFF\ are high. With auto-powerdown plus enabled, the device automatically activates once a valid signal is applied to any receiver or driver input. INVALID\ is high valid data if any receiver input voltage is greater than 2.7 V or less than 2.7 V, or has been between 0.3 V and 0.3 V for less than 30 µs. INVALID\ is low invalid data if all receiver input voltages are between 0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.
电源电压DC 3.30 V, 5.00 V
供电电流 2 mA
针脚数 28
数据速率 250 kbps
驱动器/包 5
工作温度Max 70 ℃
工作温度Min 0 ℃
电源电压 3V ~ 5.5V
电源电压Max 5.5 V
电源电压Min 3 V
安装方式 Surface Mount
引脚数 28
封装 SSOP-28
封装 SSOP-28
工作温度 0℃ ~ 70℃
产品生命周期 Active
包装方式 Each
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
REACH SVHC版本 2018/06/27
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
MAX3238CDB TI 德州仪器 | 当前型号 | 当前型号 |
MAX3238CDBR 德州仪器 | 完全替代 | MAX3238CDB和MAX3238CDBR的区别 |
MAX3238CDBRE4 德州仪器 | 完全替代 | MAX3238CDB和MAX3238CDBRE4的区别 |
MAX3238CDBE4 德州仪器 | 完全替代 | MAX3238CDB和MAX3238CDBE4的区别 |