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RS-232 收發器

TRS3318E

現行

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

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產品規格表

TRS3318E

現行
產品規格表 立即訂購

產品詳細資料

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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類型 標題 日期
* Data sheet TRS3318E 2.5-V 460-kbps RS-232 Transceiver With +/-15-kV ESD Protection datasheet (Rev. B) 2013年 10月 11日
Technical article How the RS-232 transceiver’s regulated charge-pump circuitry works PDF | HTML 2018年 6月 28日
Application note Understanding Power Requirements in RS-232 Applications (Rev. B) 2013年 4月 26日
Application note Removing Ground Noise in Data Transmission Systems 2007年 10月 5日
Application note Interface Circuits for TIA/EIA-232-F (Rev. A) 2002年 9月 19日

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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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參考設計

TIDA-060008 — 用於將 RS-232 訊號轉換爲 RS-485 訊號的參考設計

This reference design provides a circuit of converting RS-232 signaling to RS-485 signaling. This allows for long-distance communication, since the range supported by RS-232 is normally less than 50 feet while the range for RS-485's can exceed 1000 feet. The design implements bidirectional (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00540 — RS-485 / RS-232 多協定收發器參考設計

This design (TIDA-00540) allows for communication over RS-485 or RS-232 data buses without requiring separate wiring for each.  Data lines are shared between two different transceiver types, and a single control signal is used to determine which protocol is to be used.
Design guide: PDF
電路圖: PDF
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