Datasheet > SN65C3221_06

SN65C3221_06

更新时间： 2024-11-18 04:51:19

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
16页	289K
描述
3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

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中文翻译

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数据手册

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SN65C3221_06 数据手册

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SLLS351E − APRIL 2002 − REVISED OCTOBER 2004

DB OR PW PACKAGE

(TOP VIEW)

Operate With 3-V to 5.5-V V

Operate Up To 1 Mbit/s

Supply

Low Standby Current . . . 1 µA Typ

External Capacitors . . . 4 × 0.1 µF

C1+

V+

FORCEOFF

GND

Accepts 5-V Logic Input With 3.3-V Supply

C1−

C2+

C2−

V−

DOUT

FORCEON

DIN

RS-232 Bus-Pin ESD Protection Exceeds

15 kV Using Human-Body Model (HBM)

Auto-Powerdown Feature Automatically

Disables Drivers for Power Savings

INVALID

ROUT

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 and SN75C3221 consist 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). These devices provide 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. These devices

operate 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 devices do 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. Refer to Figure 5 for receiver input levels.

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

†

PACKAGE

SSOP (DB)

Reel of 2000

Tube of 90

SN75C3221DBR

SN75C3221PW

SN75C3221PWR

SN65C3221DBR

SN65C3221PW

SN65C3221PWR

CA3221

−0°C to 70°C

−40°C to 85°C

TSSOP (PW)

SSOP (DB)

CA3221

CB3221

Reel of 2000

Tube of 90

TSSOP (PW)

CB3221

Reel of 2000

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

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...16

中文翻译

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与SN65C3221_06相关器件

型号	品牌	获取价格	描述	数据表
SN65C3221_15	TI	获取价格	3-V TO 5.5-V SINGLE-CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DB	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DBE4	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DBG4	TI	获取价格	LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, SSOP-16
SN65C3221DBR	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DBRE4	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DBRG4	TI	获取价格	LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, SSOP-16
SN65C3221DW	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221DWR	TI	获取价格	3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
SN65C3221E	TI	获取价格	3-V TO 5.5-V SINGLE-CHANNEL RS-232 1-Mbit/s L

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