TRSF3238IPWG4

更新时间： 2024-09-15 12:16:23

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
17页	270K
描述
3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

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TRSF3238IPWG4 数据手册

TRSF3238

3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

www.ti.com

SLLS859–AUGUST 2007

FEATURES

DB, DW, OR PW PACKAGE

(TOP VIEW)

•

Auto-Powerdown Plus

Operates With 3-V to 5.5-V V_CCSupply

C2+

GND

C2−

C1+

27 V+

Always-Active Noninverting Receiver Output

(ROUT1B)

•

Supports Operation From 250 kbit/s to

1 Mbit/s

V−

25 C1−

DOUT1

DOUT2

DOUT3

RIN1

24 DIN1

•

Low Standby Current . . . 1 μA Typical

External Capacitors . . . 4 × 0.1 μF

Accepts 5-V Logic Input With 3.3-V Supply

Inter-Operable With TRSF3243

DIN2

DIN3

ROUT1

ROUT2

DIN4

RIN2

DOUT4

RIN3

RS-232 Bus-Pin ESD Protection Exceeds

ROUT3

DIN5

±15 kV Using Human-Body Model (HBM)

DOUT5

FORCEON

FORCEOFF

ROUT1B

INVALID

APPLICATIONS

•

Battery-Powered Systems

PDAs

Notebooks

Subnotebooks

Laptops

Palmtop PCs

Hand-Held Equipment

Modems

Printers

DESCRIPTION/ORDERING INFORMATION

The TRSF3238 device consists of five line drivers, three line receivers, and a dual charge-pump circuit with

±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The charge pump and four small

external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, this device includes an

always-active noninverting output (ROUT1B), which allows applications using the ring indicator to transmit data

while the device is powered down. This device operates at data signaling rate up to 1 Mbit/s and at an increased

slew-rate range of 24 V/μs to 150 V/μs.

Flexible control options for power management are featured when the serial port and driver inputs are inactive.

The auto-powerdown plus feature functions when FORCEON is low and FORCEOFF is high. During this mode

of operation, if the device does not sense valid signal transitions on all receiver and driver inputs for

approximately 30 s, the built-in charge pump and drivers are powered down, reducing the supply current to

1 μA. By disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus occurs if there

is no activity in the logic levels for the driver inputs. Auto-powerdown plus can be disabled when FORCEON and

FORCEOFF are high. With auto-powerdown plus enabled, the device automatically activates when a valid signal

is applied to any receiver or driver input. INVALID is high (valid data) if any 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 all receiver input voltages are between –0.3 V and 0.3 V for more than 30 μs. Refer to 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...17

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与TRSF3238IPWG4相关器件

型号	品牌	获取价格	描述	数据表
TRSF3238IPWR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
TRSF3238IPWRG4	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
TRSF3243	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
TRSF3243CDB	TI	获取价格	5 LINE TRANSCEIVER, PDSO28, GREEN, PLASTIC, SSOP-28
TRSF3243CDBG4	TI	获取价格	5 LINE TRANSCEIVER, PDSO28, GREEN, PLASTIC, SSOP-28
TRSF3243CDBR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
TRSF3243CDBRG4	TI	获取价格	IC 5 LINE TRANSCEIVER, PDSO28, GREEN, PLASTIC, SSOP-28, Line Driver or Receiver
TRSF3243CDW	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
TRSF3243CDWG4	TI	获取价格	IC 5 LINE TRANSCEIVER, PDSO28, GREEN, PLASTIC, SOIC-28, Line Driver or Receiver
TRSF3243CDWR	TI	获取价格	3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

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