TRS3318E

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具有 +/-8kV IEC-ESD 保護的 2.5V 雙通道 460kbps RS-232 線路驅動器/接收器

產品詳情

Drivers per package 2 Receivers per package 2 Logic voltage (min) (V) 2.5 Data rate (max) (Mbps) 0.46 Main supply voltage (nom) (V) 2.5 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 2 Receivers per package 2 Logic voltage (min) (V) 2.5 Data rate (max) (Mbps) 0.46 Main supply voltage (nom) (V) 2.5 Features Auto-Powerdown Plus ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
SSOP (DB) 20 56.16 mm2 7.2 x 7.8 TSSOP (PW) 20 41.6 mm2 6.5 x 6.4
  • ESD Protection for RS-232 I/O Pins
    • ±15 kV (Human-Body Model)
    • ±8 kV (IEC 61000-4-2, Contact Discharge)
    • ±15 kV (IEC 61000-4-2, Air-Gap Discharge)
  • 300-μA Operating Supply Current
  • 1-μA Low-Power Standby Mode (With Receivers Active)
  • Designed to Transmit at a Data Rate of
    460 kbps
  • Auto-Powerdown Plus Option Features Flexible Power-Saving Mode
  • Operates From a Single 2.25-V to 3-V VCC Supply
  • Designed to be Interchangeable With Industry Standard '3318 Devices
  • ESD Protection for RS-232 I/O Pins
    • ±15 kV (Human-Body Model)
    • ±8 kV (IEC 61000-4-2, Contact Discharge)
    • ±15 kV (IEC 61000-4-2, Air-Gap Discharge)
  • 300-μA Operating Supply Current
  • 1-μA Low-Power Standby Mode (With Receivers Active)
  • Designed to Transmit at a Data Rate of
    460 kbps
  • Auto-Powerdown Plus Option Features Flexible Power-Saving Mode
  • Operates From a Single 2.25-V to 3-V VCC Supply
  • Designed to be Interchangeable With Industry Standard '3318 Devices

The TRS3318E is a dual-driver, dual-receiver, RS-232-compatible transceiver. The device features auto-powerdown plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).

The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge pump requires only four 0.1-µF capacitors and features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

The TRS3318E achieves a 1-µA supply current using the auto-powerdown feature. This device automatically enters a low-power power-down mode when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. The device turns on again when it senses a valid transition at any driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.

This device is available in two space-saving packages: 20-pin SSOP and 20-pin TSSOP.

The TRS3318E is a dual-driver, dual-receiver, RS-232-compatible transceiver. The device features auto-powerdown plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).

The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge pump requires only four 0.1-µF capacitors and features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

The TRS3318E achieves a 1-µA supply current using the auto-powerdown feature. This device automatically enters a low-power power-down mode when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. The device turns on again when it senses a valid transition at any driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.

This device is available in two space-saving packages: 20-pin SSOP and 20-pin TSSOP.

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技術文檔

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類型 標題 下載最新的英語版本 日期
* 數據表 TRS3318E 2.5-V 460-kbps RS-232 Transceiver With +/-15-kV ESD Protection 數據表 (Rev. B) 2013年 10月 11日
技術文章 How the RS-232 transceiver’s regulated charge-pump circuitry works PDF | HTML 2018年 6月 28日
應用手冊 Understanding Power Requirements in RS-232 Applications (Rev. B) 2013年 4月 26日
應用手冊 Removing Ground Noise in Data Transmission Systems 2007年 10月 5日
應用手冊 TIA/EIA-232-F 的接口電路 (Rev. A) 2002年 9月 19日

設計和開發

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用戶指南: PDF
英語版 (Rev.A): PDF
參考設計

TIDA-060008 — 用于將 RS-232 信令轉換為 RS-485 信令的參考設計

此參考設計提供一個將 RS-232 信令轉換為 RS-485 信令的電路。鑒于 RS-232 支持的范圍通常小于 50 英尺,而 RS-485 支持的范圍可超過 1000 英尺,因此可實現長距離通信。此設計可在沒有任何軟件干擾的情況下實現雙向半雙工通信。
設計指南: PDF
原理圖: PDF
參考設計

TIDA-00540 — RS-485/RS-232 多協議收發器參考設計

此設計 (TIDA-00540) 允許通過 RS-485 或 RS-232 數據總線進行通信,而無需為每種情況分別進行布線。數據線路可在兩種不同類型的收發器之間進行共享,而單個控制信號則可用于確定使用哪種協議。
設計指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
SSOP (DB) 20 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian

訂購和質量

包含信息:
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息:
  • 制造廠地點
  • 封裝廠地點

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