Datasheet > LTC1384

LTC1384

更新时间： 2023-12-20 18:44:08

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
8页	120K
描述
在停机模式中 2 个接收器处于运行状态的 5V、低功率、RS232 收发器

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LTC1384 数据手册

LTC1384

5V Low Power RS232

Transceiver with 2 Receivers

Active in Shutdown

FEATURES

DESCRIPTIO

TheLTC^®1384isanultra-lowpower2-driver/2-receiver

RS232 transceiver that operates from a single 5V

supply. The charge pump requires only four space-

saving 0.1µF capacitors.

■

Operates from a Single 5V Supply

Low Supply Current: I_CC= 220µA

I_CC= 35µA in Shutdown Mode with Both

Receivers Kept Alive

ESD Protection Over ±10kV

Uses Small Capacitors: 0.1µF

Operates to 120kBaud

Output Overvoltage Does Not Force Current

Back into Supplies

■

Thetransceiveroperatesinoneoftwomodes, Normaland

Shutdown. In the Normal mode, I_CCis only 220µA with the

driver outputs unloaded. In the Shutdown mode, the

charge pump is turned off, the driver outputs are forced

into three-state, both receivers are kept active and I_CC

drops to 35µA. The receiver outputs may be forced into

three-state at any time using the receiver enable (RX EN)

pin.

■

RS232 I/O Lines Can Be Forced to ±25V

Without Damage

Pin Compatible with LT1180A

The LTC1384 is fully compliant with all data rate and

overvoltage RS232 specifications. The transceiver can

operate up to 120kbaud with a 2500pF, 3kΩ load. Both

driver outputs and receiver inputs can be forced to

±25V without damage and can survive multiple ±10kV

ESD strikes.

APPLICATIO S

■

Notebook Computers

Palmtop Computers

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

2-Drivers/2-Receivers with Shutdown

and Receiver Enable

Quiescent and Shutdown Supply Current

vs Temperature

1200

1000

800

600

400

200

= 5V

TEST CONDITION: V = 5V

0.1µF

LTC1384

SHUTDOWN

CURRENT

0.1µF

300k

LOGIC INPUT

232 OUTPUT

300k

QUIESCENT

CURRENT

LOGIC INPUT

232 OUTPUT

232 INPUT

LOGIC OUTPUT

–20

TEMPERATURE (°C)

LOGIC OUTPUT

ON/OFF

232 INPUT

LTC1384 • TA02

LTC1384 • TA01

RX EN

1384fa

12 3 4 5 6 7 8

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