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TRS3318ECPWR Datasheet(PDF) 1 Page - Texas Instruments |
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TRS3318ECPWR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 19 page www.ti.com FEATURES 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 READY C1+ V+ C1− C2+ C2− V− DOUT2 RIN2 ROUT2 FORCEOFF VCC GND DOUT1 RIN1 ROUT1 FORCEON DIN1 DIN2 INVALID DB OR PW PACKAGE (TOP VIEW) APPLICATIONS DESCRIPTION/ORDERING INFORMATION TRS3318E 2.5-V 460-kbps RS-232 TRANSCEIVER WITH ±15-kV ESD PROTECTION SLLS805 – APRIL 2007 • 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 V CC Supply • Designed to be Interchangeable With Industry Standard '3318 Devices • Battery-Powered Systems • PDAs • Cellular Phones • Notebooks • Hand-Held Equipment • Pagers 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. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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