z= ---
--A
m--w-
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 : V
DO
= 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
UMC [ UMC CORPORATION ]
