TRSF3238E

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具有 +/-15kV IEC-ESD 保护的 3V 至 5.5V 多通道 1Mbps RS-232 线路驱动器/接收器

产品详情

Drivers per package 5 Receivers per package 3 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 1 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown Plus ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
Drivers per package 5 Receivers per package 3 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 1 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown Plus ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
SOIC (DW) 28 184.37 mm² 17.9 x 10.3 SSOP (DB) 28 79.56 mm² 10.2 x 7.8
  • 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 1000 kbit/s
  • Five Drivers and Three Receivers
  • Auto-Powerdown Plus Feature Enables Flexible Power-Down Mode
  • Low Standby Current . . . 1 µA Typical
  • External Capacitors . . . 4 × 0.1 µF
  • Accept 5-V Logic Input With 3.3-V Supply
  • Always-Active Noninverting Receiver Output (ROUT1B)
  • ESD Protection for RS-232 Interface Pins
    • ±15-kV Human-Body Model (HBM)
    • ±8-kV IEC61000-4-2, Contact Discharge
    • ±15-kV IEC61000-4-2, Air-Gap Discharge
  • APPLICATIONS
    • Battery-Powered Systems
    • PDAs
    • Notebooks
    • Subnotebooks
    • Laptops
    • Palmtop PCs
    • Hand-Held Equipment
    • Modems
    • Printers

  • 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 1000 kbit/s
  • Five Drivers and Three Receivers
  • Auto-Powerdown Plus Feature Enables Flexible Power-Down Mode
  • Low Standby Current . . . 1 µA Typical
  • External Capacitors . . . 4 × 0.1 µF
  • Accept 5-V Logic Input With 3.3-V Supply
  • Always-Active Noninverting Receiver Output (ROUT1B)
  • ESD Protection for RS-232 Interface Pins
    • ±15-kV Human-Body Model (HBM)
    • ±8-kV IEC61000-4-2, Contact Discharge
    • ±15-kV IEC61000-4-2, Air-Gap Discharge
  • APPLICATIONS
    • Battery-Powered Systems
    • PDAs
    • Notebooks
    • Subnotebooks
    • Laptops
    • Palmtop PCs
    • Hand-Held Equipment
    • Modems
    • Printers

The TRSF3238E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM) protection on the driver output (DOUT) and receiver input (RIN) terminals. 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. The TRSF3238E operates at data signaling rates up to 1000 kbit/s.

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 activates automatically when 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.

The TRSF3238E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM) protection on the driver output (DOUT) and receiver input (RIN) terminals. 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. The TRSF3238E operates at data signaling rates up to 1000 kbit/s.

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 activates automatically when 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.

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类型 标题 下载最新的英语版本 日期
* 数据表 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver 数据表 2007年 8月 15日
更多文献资料 RS-232 IEC ESD-Protected Devices From TI (Rev. A) 2007年 7月 27日

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用户指南: PDF
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参考设计

TIDA-00557 — 用于智能电网和变电站自动化的全调制解调器控制(8 线 RS232)模块参考设计

TIDA-00557 参考设计为采用 DB-9 插接式连接器的数据终端设备 (DTE) 提供一个接口作为真正的 RS-232(八路信号 + 接地)物理层接口,同时还支持数据通信设备 (DCE) 接口。此设计适用于智能电网 IED、保护继电器和变电站自动化领域。此设计满足 IEC61000-4-2 规定的 +-/ 8kV 接触放电 ESD 保护和 IEC61000-4-5 规定的 +/-1kV 浪涌保护。
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SOIC (DW) 28 查看选项
SSOP (DB) 28 查看选项

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