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SC41343PMOTN/a750avaiEncoder and Decoder Pairs
SC41344PMOTOROLA ?N/a3841avaiEncoder and Decoder Pairs
SC41344PN/a129avaiEncoder and Decoder Pairs
SC41344PM0TOROLAN/a25avaiEncoder and Decoder Pairs
MC145026DFREESCAREN/a4739avaiEncoder and Decoder Pairs
MC145026DMOTN/a56avaiEncoder and Decoder Pairs
MC145026PMOTON/a178avaiEncoder and Decoder Pairs
MC145027N/a902avaiEncoder and Decoder Pair
MC145027DWMOTN/a17avaiEncoder and Decoder Pairs
MC145027PONN/a2000avaiEncoder and Decoder Pairs
MC145028MOTOROLAN/a19avaiEncoder and Decoder Pairs (revC)
MC145028DWFREESCALEN/a922avaiEncoder and Decoder Pairs
MC145028PMOTN/a3263avaiEncoder and Decoder Pairs


MC145026D ,Encoder and Decoder PairsMAXIMUM RATINGS* (Voltages Referenced to V )SSThis device contains protection circuitry toRating Sy ..
MC145026D ,Encoder and Decoder PairsMAXIMUM RATINGS* (Voltages Referenced to V )SSThis device contains protection circuitry toRating Sy ..
MC145026P ,Encoder and Decoder PairsElectrical Characteristics tables orPin Descriptions section.MOTOROLA MC145026•MC145027•MC145028•SC ..
MC145027 ,Encoder and Decoder Pair**Order this documentby MC145026/DSEMICONDUCTOR TECHNICAL DATA * *CMOS**These devices are designed ..
MC145027DW ,Encoder and Decoder PairsMAXIMUM RATINGS* (Voltages Referenced to V )SSThis device contains protection circuitry toRating Sy ..
MC145027P ,Encoder and Decoder PairsMaximum Ratings are those values beyond which damage to the device may occur. Func-tional operation ..
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MC145026D-MC145026P-MC145027-MC145027DW-MC145027P-MC145028-MC145028DW-MC145028P-SC41343P-SC41344P
Encoder and Decoder Pairs
-CMOS
These devices are designed to be used as encoder/decoder pairs in remote
control applications.
The MC145026 encodes nine lines of information and serially sends this
information upon receipt of a transmit enable (TE) signal. The nine lines may be
encoded with trinary data (low, high, or open) or binary data (low or high). The
words are transmitted twice per encoding sequence to increase security.
The MC145027 decoder receives the serial stream and interprets five of the
trinary digits as an address code. Thus, 243 addresses are possible. If binary
data is used at the encoder, 32 addresses are possible. The remaining serial
information is interpreted as four bits of binary data. The valid transmission (VT)
output goes high on the MC145027 when two conditions are met. First, two
addresses must be consecutively received (in one encoding sequence) which
both match the local address. Second, the 4 bits of data must match the last
valid data received. The active VT indicates that the information at the Data
output pins has been updated.
The MC145028 decoder treats all nine trinary digits as an address which
allows 19,683 codes. If binary data is encoded, 512 codes are possible. The VT
output goes high on the MC145028 when two addresses are consecutively
received (in one encoding sequence) which both match the local address. Operating Temperature Range: – 40 to + 85°C Very–Low Standby Current for the Encoder: 300 nA Maximum @ 25°C Interfaces with RF, Ultrasonic, or Infrared Modulators and Demodulators RC Oscillator, No Crystal Required High External Component Tolerance; Can Use ± 5% Components Internal Power–On Reset Forces All Decoder Outputs Low Operating Voltage Range: MC145026 = 2.5 to 18 V*
MC145027, MC145028 = 4.5 to 18 V Low–Voltage Versions Available:
SC41343 = 2.8 to 10 V Version of the MC145027
SC41344 = 2.8 to 10 V Version of the MC145028 For Infrared Applications, See Application Note AN1016/D
PIN ASSIGNMENTS
MC145026
ENCODER
MC145028/SC41344
DECODERS
MC145027/SC41343
DECODERS

CTC
RTC
Dout
VDD
A8/D8
A9/D9
VSS
A7/D7
A6/D6
VDD
Din
R2/C2
VSS
VDD
Din
R2/C2
VSS All MC145026 devices manufactured after date code 9314 or 314 are guaranteed over this wider voltage range. All previous designs using the
low–voltage SC41342 should convert to the MC145026, which is a drop–in replacement. The SC41342 part number has been discontinued.
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SEMICONDUCTOR TECHNICAL DATA
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