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其他接口芯片/德州仪器（TI）/TI 德州仪器接口芯片 RS-232 收发器 MAX3238CPWR

商品名称：TI 德州仪器接口芯片 RS-232 收发器 MAX3238CPWR

商品型号：MAX3238CPWR

数据手册：

品牌：德州仪器（TI）

封装规格：TSSOP

商品类别：

二级分类：其他接口芯片

商品批号：

货期：

商品编号：

商品重量：0.1kg

库存数量：10000 个

单价：¥ 10000.0000 询价

订购量：

产品详情
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质量信息

RoHS	是
REACH	是
引脚镀层/焊球材料	NIPDAU
MSL 等级/回流焊峰值温度	Level-1-260C-UNLIM

封装信息

封装 \| 引脚	TSSOP (PW) \| 28
包装数量 \| 包装：	2,000 \| LARGE T&R
工作温度范围 (℃)	0 to 70

TI,德州仪器,接口芯片,RS-232,收发器MAX3238 的特性

RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V VCC Supply
Operates up to 250 kbit/s
Five Drivers and Three Receivers
Low Standby Current ...1 µA Typical
External Capacitors ...4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Always-Active Noninverting Receiver Output (ROUT1B)
Designed to Be Interchangeable With Maxim MAX3238
Alternative High-Speed Pin-Compatible Device (1 Mbit/s)

SNx5C3238

Applications

Battery-Powered Systems, PDAs, Notebooks, Subnotebooks, Laptops, Palmtop PCs, Hand-Held Equipment, Modems, and Printers

TI,德州仪器,接口芯片,RS-232,收发器MAX3238 的说明

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 TIA/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.

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