MC145028DW

MC145028DW Datasheet

Order this document by MC145026/D

Part	Datasheet
MC145028DW	MC145028DW (pdf)

Related Parts	Information
MC145026P	MC145026P
MC145027P	MC145027P
MC145026D	MC145026D
MC145028P	MC145028P
MC145026DR2	MC145026DR2
MC145027DW	MC145027DW
MC145027DWR2	MC145027DWR2
MC145028DWR2	MC145028DWR2

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MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145026/D 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 • 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 Reset Forces All Decoder Outputs Low • Operating Voltage Range MC145026 = to 18 V* MC145027, MC145028 = to 18 V • Versions Available: SC41343 = to 10 V Version of the MC145027 SC41344 = to 10 V Version of the MC145028 • For Infrared Applications, See Application Note AN1016/D MC145026 MC145027 MC145028 SC41343 SC41344 P SUFFIX PLASTIC DIP CASE 648 D SUFFIX SOG PACKAGE CASE 751B DW SUFFIX SOG PACKAGE CASE 751G ORDERING INFORMATION MC145026P MC145026D Plastic DIP SOG Package MC145027P, SC41343P Plastic DIP MC145027DW, SC41343DW SOG Package MC145028P, SC41344P Plastic DIP MC145028DW, SC41344DW SOG Package MC145026 ENCODER A1 1 A2 2 A3 3 A4 4 A5 5 A6/D6 6 A7/D7 7 16 VDD 15 Dout 14 TE 13 RTC 12 CTC 11 RS 10 A9/D9 VSS 8 9 A8/D8 PIN ASSIGNMENTS MC145027/SC41343 DECODERS A1 1 A2 2 16 VDD 15 D6 A3 3 A4 4 14 D7 13 D8 A5 5 R1 6 C1 7 VSS 8 12 D9 11 VT 10 R2/C2 9 Din MC145028/SC41344 DECODERS A1 1 A2 2 16 VDD 15 A6 A3 3 A4 4 14 A7 13 A8 A5 5 R1 6 C1 7 VSS 8 12 A9 11 VT 10 R2/C2 9 Din * All MC145026 devices manufactured after date code 9314 or 314 are guaranteed over this wider voltage range. All previous designs using the SC41342 should convert to the MC145026, which is a replacement. The SC41342 part number has been discontinued. MOMoTtoOroRla,OInLc.A1998 TE 11 14 OSCILLATOR AND ENABLE ÷4 DIVIDER DATA SELECT AND BUFFER 15 Dout RING COUNTER AND DECODER 98 76543 21 A1 1 A2 2 A3 3 A4 4 A5 5 A6/D6 6 A7/D7 7 A8/D8 9 A9/D9 10 TRINARY DETECTOR

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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Order this document by MC145026/D

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
• 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 Reset Forces All Decoder Outputs Low
• Operating Voltage Range MC145026 = to 18 V*

MC145027, MC145028 = to 18 V
• Versions Available:

SC41343 = to 10 V Version of the MC145027 SC41344 = to 10 V Version of the MC145028
• For Infrared Applications, See Application Note AN1016/D

MC145026 MC145027 MC145028 SC41343 SC41344

P SUFFIX PLASTIC DIP

CASE 648

D SUFFIX SOG PACKAGE

CASE 751B

DW SUFFIX SOG PACKAGE

CASE 751G
ORDERING INFORMATION

MC145026P MC145026D

Plastic DIP SOG Package

MC145027P, SC41343P

Plastic DIP

MC145027DW, SC41343DW SOG Package

MC145028P, SC41344P

Plastic DIP

MC145028DW, SC41344DW SOG Package

MC145026 ENCODER

A1 1 A2 2 A3 3 A4 4 A5 5 A6/D6 6 A7/D7 7
16 VDD 15 Dout 14 TE 13 RTC 12 CTC 11 RS 10 A9/D9

VSS 8
9 A8/D8

PIN ASSIGNMENTS

MC145027/SC41343 DECODERS

A1 1 A2 2
16 VDD 15 D6

A3 3 A4 4
14 D7 13 D8

A5 5 R1 6 C1 7 VSS 8
12 D9 11 VT 10 R2/C2 9 Din

MC145028/SC41344 DECODERS

A1 1 A2 2
16 VDD 15 A6

A3 3 A4 4
14 A7 13 A8

A5 5 R1 6 C1 7 VSS 8
12 A9 11 VT 10 R2/C2 9 Din
* All MC145026 devices manufactured after date code 9314 or 314 are guaranteed over this wider voltage range. All previous designs using the SC41342 should convert to the MC145026, which is a replacement. The SC41342 part number has been discontinued.

MOMoTtoOroRla,OInLc.A1998

TE 11 14

OSCILLATOR AND

ENABLE
÷4 DIVIDER

DATA SELECT AND

BUFFER
15 Dout

RING COUNTER AND DECODER 98 76543 21

A1 1 A2 2 A3 3 A4 4 A5 5 A6/D6 6 A7/D7 7 A8/D8 9 A9/D9 10

TRINARY DETECTOR

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Datasheet ID: MC145028DW 635478