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其他接口芯片/德州儀器（TI）/TI 德州儀器接口芯片 RS-232 收發器 MAX3238CPWR

商品名稱：TI 德州儀器接口芯片 RS-232 收發器 MAX3238CPWR

商品型號：MAX3238CPWR

數據手冊：

品牌：德州儀器（TI）

封裝規格：TSSOP

商品類別：

二級分類：其他接口芯片

商品批號：

貨期：

商品編號：

商品重量：0.1kg

庫存數量：10000 個

單價：￥ 10000.0000 詢價

訂購量：

產品詳情
相關產品

質量信息

RoHS	是
REACH	是
引腳鍍層/焊球材料	NIPDAU
MSL 等級/回流焊峰值溫度	Level-1-260C-UNLIM

封裝信息

封裝 \| 引腳	TSSOP (PW) \| 28
包裝數量 \| 包裝：	2,000?\|?LARGE T&R
工作溫度范圍 (℃)	0 to 70

TI,德州儀器,接口芯片,RS-232,收發器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,德州儀器,接口芯片,RS-232,收發器MAX3238 的說明

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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