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TRSF3222ECDB Datasheet(PDF) 1 Page - Texas Instruments |
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TRSF3222ECDB Datasheet(HTML) 1 Page - Texas Instruments |
1 / 19 page www.ti.com FEATURES APPLICATIONS DESCRIPTION/ DB, DW, OR PW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 EN C1+ V+ C1− C2+ C2− V− DOUT2 RIN2 ROUT2 PWRDOWN VCC GND DOUT1 RIN1 ROUT1 NC DIN1 DIN2 NC NC − No internal connection RHL PACKAGE (TOP VIEW) 1 24 12 13 2 3 4 5 6 7 8 9 10 11 23 22 21 20 19 18 17 16 15 14 VCC NC GND DOUT1 RIN1 ROUT1 NC DIN1 NC DIN2 C1+ NC V+ C1– C2+ C2– V– DOUT2 NC RIN2 NC − No internal connection The TRSF3222E can be placed in the power-down mode by setting the power-down (PWRDOWN) input low, TRSF3222E 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD PROTECTION SLLS823 – JULY 2007 • ESD Protection for RS-232 Bus Pins – ±15-kV Human-Body Model (HBM) – ±8-kV IEC 61000-4-2, Contact Discharge – ±15-kV IEC 61000-4-2, Air-Gap Discharge • Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards • Operates With 3-V to 5.5-V V CC Supply • Operates up to 1000 kbit/s • Two Drivers and Two Receivers • Low Standby Current . . . 1 μA Typ • External Capacitors . . . 4 × 0.1 μF • Accepts 5-V Logic Input With 3.3-V Supply • Battery-Powered Systems • PDAs • Notebooks • Laptops • Palmtop PCs • Hand-Held Equipment ORDERING INFORMATION The TRSF3222E consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The TRSF3222E meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The TRSF3222E operates at typical data signaling rates up to 1000 kbit/s and is an improved drop-in replacement for industry-popular '3222 two-driver, two-receiver functions. which draws only 1 μA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC, and V– is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting enable (EN) high. 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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