Datasheet > SN65C3221-Q1

SN65C3221-Q1

更新时间： 2024-11-18 12:22:35

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
15页	271K
描述
3-V TO 5.5V SINGLE-CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

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SN65C3221-Q1 数据手册

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SLLS616B − APRIL 2004 − REVISED APRIL 2008

DB or PW PACKAGE

(TOP VIEW)

Qualified for Automotive Applications

Operates With 3-V to 5.5-V V Supply

Operates Up To 1 Mbit/s

FORCEOFF

Low Standby Current . . . 1 µA Typical

External Capacitors . . . 4 × 0.1 µF

C1+

V+

GND

C1−

C2+

C2−

V−

DOUT

FORCEON

DIN

Accepts 5-V Logic Input With 3.3-V Supply

RS-232 Bus-Pin ESD Protection Exceeds

15 kV Using Human-Body Model (HBM)

INVALID

ROUT

Auto-Powerdown Feature Automatically

Disables Drivers for Power Savings

RIN

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 SN65C3221 consists of one line driver, one line receiver, and a dual charge-pump circuit with 15-kV ESD

protection pin to pin (serial-port connection pins, including GND). This device 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. This device 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 device does not sense a valid RS-232 signal on the receiver input, the driver output is disabled.

If FORCEOFF is set low and EN 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.

{

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

‡

PACKAGE

TSSOP (PW)

SSOP (DB)

Reel of 2000

SN65C3221IPWRQ1

SN65C3221IDBRQ

3221Q1

−40°C to 85°C

†

‡

For the most current package and ordering information, see the Package Option Addendum at the end of this

document, or see the TI web site at http://www.ti.com.

Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.

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.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...15

中文翻译

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与SN65C3221-Q1相关器件

型号	品牌	获取价格	描述	数据表
SN65C3222	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222_06	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222_16	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DB	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DBR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DBRE4	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DBRG4	TI	获取价格	DUAL LINE TRANSCEIVER, PDSO20, GREEN, PLASTIC, SSOP-20
SN65C3222DW	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DWE4	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3222DWR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

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