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UM3758

Tri-Siate Programmahle Encoder/Decoder

Unspecified 

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PRELIMINARY

UM3758 Series

I’ri-Siate Programmahle Encoder/Decoder

Features

m Single-Chip CMOS construction

m Single-Chip encoder/decoder selected by jump wire

m Wide operating voltage range : VDO = 3 to 12 Volts

. Built-in RC oscillator (tan use 5 % resistor)

n E a s y interface with RF, Infrared(lR) and Ultrasonic

transmission media

n Tri-state(0, 1, open) address codes, some of address

codes used as data Codes or as internal addresses

by mask Option

m Internal address code is lSbii, ie 3 ‘5 387,428, 489

different ccdes at most

m Decoder has 8-bit latch data

m Series 1C for various applications

n UM3758120A pin outcompatibleto UM3750

General Description

The UM3758 series are Single-Chip programmable encoder

/decoder ICs fabricated i n C M O S s t r u c t u r e f o r l o w

power consun$ion: They are enhanced for new Stage

encoder/decoder ICs to provide many more combinations

for higher security.

Most fzmbinations are achieved by UM3758-18OA, provid-

ing 3 = 387,420,489 combinations. Some ICs of this

series provide 4 to 8 data bits for controlling.

According to the following information, The inter-

n a l a d d r e s s b i i s , 1 8 bis/24pin and 12 biis/lEpin

package, tan be assigned by customer in advance

for much higher securii and confidentialii. Whenever

t h e a d d r e s s Codes of transmitter t r a n s m i t s , t h e

receiver will check the address codes with his own and

the successive two matched address codes will generate

a low pulse. If there were any data bits, the receiver

will latch these data bis at the corresponding pins

for controlling.

Pin Configurations

., - ._.

1

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