2.5-V 460-Kbps RS-232 Transceiver With +/-15-kV ESD Protection
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TRS3318E 2.5-V 460-kbps RS-232 Transceiver With +/-15-kV ESD Protection datasheet (Rev. B) | Oct. 11, 2013 |
Technical articles | How the RS-232 transceiver’s regulated charge-pump circuitry works | Jun. 28, 2018 | |
Application note | Understanding Power Requirements in RS-232 Applications (Rev. B) | Apr. 26, 2013 | |
Application note | Removing Ground Noise in Data Transmission Systems | Oct. 05, 2007 | |
Application note | Interface Circuits for TIA/EIA-232-F (Rev. A) | Sep. 19, 2002 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-060008 BOM.pdf (56KB) -
download TIDA-060008 CAD files.zip (1688KB) -
download TIDA-060008 Assembly Drawing.pdf (101KB) -
download TIDA-060008 PCB.pdf (458KB) -
download TIDA-060008 Gerber.zip (1858KB)
Design files
-
download TIDA-00540 BOM.pdf (105KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SSOP (DB) | 20 | View options |
TSSOP (PW) | 20 | View options |
Ordering & quality
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