Datasheet > ST3243B_07

ST3243B_07

更新时间： 2024-11-21 04:02:23

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
22页	725K
描述
3 to 5.5 V, 400 Kbps, RS-232 transceiver with auto-power-down

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中文翻译

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ST3243B_07 数据手册

ST3243B

ST3243C

3 to 5.5 V, 400 Kbps, RS-232 transceiver

with auto-power-down

Features

■ 1 µA supply current achieved when in auto-

power-down

■ 250 kbps minimum guaranteed data rate

■ Guaranteed 6 V/µs slew rate range

■ Guaranteed mouse drive ability

■ 0.1 µF external capacitors

■ Meet EIA/TIA-232 specifications down to 3 V

■ Available in SSOP-28 and TSSOP28

TSSOP

SSOP

Description

peripheral drives causes the auto-power-down

condition to occur.

The ST3243 device consists of 3 drivers, 5

receivers and a dual charge-pump circuit. The

device meets the requirements of EIA/TIA and

V.28/V.24 communication standards providing

high data rate capability.

Auto-power-down can be disabled when

FORCEON and FORCEOFF are high, and should

be done when driving a serial mouse. With Auto-

power-down enabled, the device is activated

automatically when a valid signal is applied to any

receiver input.

The receiver R2 is always active to implement a

wake-up feature for serial port.

Typical application are in notebook, sub-

notebook, palmtop computers, battery-powered

equipment, hand-held equipment, peripherals and

printers.

The ST3243 has a proprietary low-dropout

transmitter output stage enabling true RS-232

performance from a 3.0 V to 5.5 V supply with a

dual charge pump. The device is guaranteed to

run at data rates of 250 kbps while maintaining

RS-232 output levels.

The Auto-power-down 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, the driver outputs

are disabled. If FORCEOFF is set low, both

drivers and receivers (expert R2B) are shut off,

and supply current is reduced to 1 mA.

Disconnecting the serial port or turning off the

Table 1.

Order code

ST3243CPR

Device summary

Temperature range

Package

Packaging

0 to 70 °C

SSOP-28 (tape and reel)

TSSOP28 (tape and reel)

1350 parts per reel

2500 parts per reel

ST3243BTR

-40 to 85 °C

November 2007

Rev 8

1/22

www.st.com

12 3 4 5 6 7...22

中文翻译

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与ST3243B_07相关器件

型号	品牌	获取价格	描述	数据表
ST3243B_11	STMICROELECTRONICS	获取价格	3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down
ST3243BD	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243BDR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243BPR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243BTR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243C	STMICROELECTRONICS	获取价格	3 TO 5.5V 400KBPS. RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243CD	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243CDR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243CPR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
ST3243CTR	STMICROELECTRONICS	获取价格	3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN

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