TRSF3238E

現行

具 +/-15-kV IEC-ESD 保護的 3 至 5.5-V 多通道 1Mbps RS-232 線路驅動器/接收器

產品詳細資料

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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類型 標題 日期
* Data sheet 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver datasheet 2007年 8月 15日
More literature RS-232 IEC ESD-Protected Devices From TI (Rev. A) 2007年 7月 27日

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TIDA-00557 — 適用於保護繼電器、IED 和變電所自動化的 RS-232 數據機介面模組參考設計

The TIDA-00557 reference design provides an interface for a true RS-232 (eight signal + ground) physical layer interface for data terminal equipment (DTE) using a DB-9 plug-type connector with a provision for a data communication equipment (DCE) interface. This is intended for smart grid (...)
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