Datasheet > TRSF3221EIRGTR

TRSF3221EIRGTR

更新时间： 2024-10-04 02:47:59

品牌	Logo	应用领域
德州仪器 - TI		驱动
页数	文件大小	规格书
21页	893K
描述
3-V TO 5.5-V SINGLE-CHANNEL RS-232 1-Mbit/s LINE DRIVER/RECEIVER WITH Â±15-kV IEC ESD PROTECTION

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TRSF3221EIRGTR 数据手册

TRSF3221E

3-V TO 5.5-V SINGLE-CHANNEL RS-232 1-Mbit/s LINE DRIVER/RECEIVER

WITH ±15-kV IEC ESD PROTECTION

www.ti.com

SLLS822–JULY 2007

FEATURES

DB OR PW PACKAGE

•

ESD Protection for RS-232 Pins

(TOP VIEW)

–

±15-kV Human-Body Model (HBM)

C1+

V+

FORCEOFF

±8-kV IEC 61000-4-2 Contact Discharge

±15-kV IEC 61000-4-2 Air-Gap Discharge

GND

•

Operates With 3-V to 5.5-V V_CCSupply

Operates up to 1 Mbit/s

C1−

C2+

C2−

V−

DOUT

FORCEON

DIN

Low Standby Current . . . 1 μA Typ

External Capacitors . . . 4 × 0.1 μF

Accepts 5-V Logic Input With 3.3-V Supply

INVALID

ROUT

RIN

RS-232 Bus-Pin ESD Protection Exceeds

±15 kV Using HBM

•

Auto-Powerdown Feature Automatically

Disables Drivers for Power Savings

APPLICATIONS

•

Battery-Powered, Hand-Held, and Portable

Equipment

•

PDAs and Palmtop PCs

Notebooks, Sub-Notebooks, and Laptops

Digital Cameras

Mobile Phones and Wireless Devices

DESCRIPTION/ORDERING INFORMATION

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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...21

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与TRSF3221EIRGTR相关器件

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TRSF3221IDBG4	TI	获取价格	暂无描述
TRSF3221IPW	TI	获取价格	LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, TSSOP-16
TRSF3222	TI	获取价格	3-V TO 5.5-V TWO-CHANNEL RS-232 1-Mbit/s LINE
TRSF3222E	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRSF3222ECDB	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRSF3222ECDBG4	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRSF3222ECDBR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRSF3222ECDBRG4	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRSF3222ECDW	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/

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