Datasheet > UTRS3238

UTRS3238

更新时间： 2023-12-06 20:00:40

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
10页	713K
描述
+3.3v to +5.0v power supply, 250kbps, rs-232 line drivers/receivers

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数据手册

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UTRS3238 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UTRS3238

Preliminary

CMOS IC

+3.3V TO +5.0V POWER

SUPPLY, 250KBPS, RS-232

LINE DRIVERS/RECEIVERS



DESCRIPTION

The UTC UTRS3238 consists of 5 drivers and 3 receivers. It

meets ElA/TIA-232 and V.28/V.24 specifications, it intended for

TSSOP-28

notebook computer applications.

charge-pumps power supply and

high-efficiency, dual

low-dropout transmitter

combine to deliver true RS-232 performance from a single +3.3V ~

+5.0V power supply. A guaranteed data rate of 250kbps provides

compatibility with popular software for communicating with PCs.

The UTC UTRS3238 achieves 1µA supply current in shutdown

condition. When the UTRS3238 doesn’t detect a valid signal level

on its receiver inputs, the on-board power supply and drivers will

shutdown, and when a valid level is applied to any RS-232 receiver

input, then the system turns on again. Therefore, the system saves

power without changes to the existing BIOS or operating system.

The UTC UTRS3238 requires only 0.1µF capacitors in 3.3V

operation, and can operate from input voltages ranging from +3.3V

~ +5.0V. It is ideal for 3.3V-only systems, 5.0V-only systems, or

mixed 3.3V and 5.0V systems that require true RS-232

performance.

The UTC UTRS3238

includes

one complementary

always-active receiver that can monitor an external device (such as

a modem) in shutdown, without forward biasing the protection

diodes in a UART that may have V_CCcompletely removed.



FEATURES

* Operates With 3.3V~5.0V Power Supply

* Five Drivers and Three Receivers

* Operates Up To 250 kbps

* Designed to Transmit at a Data Rate of 250 kbps

* Low Standby Current (1µA Typical)

* External Capacitors (4*0.1µF)

* Accepts 5.0V Logic Input With 3.3V Supply

*Always-Active Non-inverting Receiver Output (R_1OUTB

* Serial-Mouse Drivability

)

* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins

www.unisonic.com.tw

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