Electronic Components Datasheet Search |
|
TRSF3221EIDBG4 Datasheet(PDF) 1 Page - Texas Instruments |
|
TRSF3221EIDBG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page www.ti.com FEATURES DB OR PW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 EN C1+ V+ C1− C2+ C2− V− RIN FORCEOFF VCC GND DOUT FORCEON DIN INVALID ROUT APPLICATIONS DESCRIPTION/ORDERING INFORMATION TRSF3221E 3-V TO 5.5-V SINGLE-CHANNEL RS-232 1-Mbit/s LINE DRIVER/RECEIVER WITH ±15-kV IEC ESD PROTECTION SLLS822 – JULY 2007 • ESD Protection for RS-232 Pins – ±15-kV Human-Body Model (HBM) – ±8-kV IEC 61000-4-2 Contact Discharge – ±15-kV IEC 61000-4-2 Air-Gap Discharge • Operates With 3-V to 5.5-V V CC Supply • Operates up to 1 Mbit/s • Low Standby Current . . . 1 μA Typ • External Capacitors . . . 4 × 0.1 μF • Accepts 5-V Logic Input With 3.3-V Supply • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using HBM • Auto-Powerdown Feature Automatically Disables Drivers for Power Savings • Battery-Powered, Hand-Held, and Portable Equipment • PDAs and Palmtop PCs • Notebooks, Sub-Notebooks, and Laptops • Digital Cameras • Mobile Phones and Wireless Devices The TRSF3221E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The TRSF3221E 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 TRSF3221E operates at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/ μs to 150 V/μs. Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the TRSF3221E does not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and the enable (EN) input is high, both the driver and receiver are shut off, and the supply current is reduced to 1 μA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less than 30 μs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 μs. See Figure 5 for receiver input levels. 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. |
Similar Part No. - TRSF3221EIDBG4 |
|
Similar Description - TRSF3221EIDBG4 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |