UNISONIC TECHNOLOGIES CO., LTD

LS3718

CMOS IC

www.unisonic.com.tw

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Copyright © 2007 Unisonic Technologies Co., Ltd

QW-R121-015.A

20-BIT SERIAL TO PARALLEL

CONVERTER

DESCRIPTION

The UTC LS3718 is a 20-bit serial to parallel converter utilizing

CMOS Technology. It is incorporates control circuit, shift register,

latch and driver into a single ship. It is suitable for MCU interface.

The effective interface assignment of MPU is available as the

connection between UTC LS3718 and MPU is required only 4

lines.

The device is designed to operate up to 5MHz. When the serial

data input to the DATA terminal and the data is output from parallel

output buffer through serial in parallel out shift register and parallel

data latches.

The data can through the shift register serial output to the SO

terminal. Therefore the UTC LS3718 can cascade connection to

expand the output data number.

The hysteresis input circuit realizes wide noise margin and the

high drive-ability output buffer (25mA) can drive LED directly.

FEATURES

* 20-Bit serial in parallel out

* Cascade connection

* Operating voltage

5V±10%

* Hysteresis input

0.5V typ

* Output current

25mA

* Operating frequency

5MHz or more

*Pb-free plating product number: LS3718L

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

Package

Packing

LS3718-S28-R

LS3718L-S28-R

SOP-28

Tape Reel

LS3718-S28-T

LS3718L-S28-T

SOP-28

Tube