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ML145027EP Просмотр технического описания (PDF) - Unspecified

Номер в каталогеML145027EP ETC
Unspecified 
Компоненты ОписаниеEncoder and Decoder Pairs CMOS


ML145027EP Datasheet PDF : 19 Pages
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ML145026
ML145027
ML145028
Encoder and Decoder Pairs
CMOS
Legacy Device: Motorola/Freescale MC145026, MC145027, MC145028
These devices are designed to be used as encoder/decoder pairs in remote
control applications.
The ML145026 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 ML145027 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 trans-
mission (VT) output goes high on the ML145027 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 ML145028 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 ML145028 when two addresses are consecu-
tively received (in one encoding sequence) which both match the local
address.
• Operating Temperature Range: TA = – 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: ML145026 = 2.5 to 18 V*
ML145027, ML145028 = 4.5 to 18 V
• For Infrared Applications, See Application Note AN1016/D
16
1
16
1
P DIP 16 = EP
PLASTIC DIP
CASE 648
SO 16 = -5P
SOG PACKAGE
CASE 751B
16
1
SO 16W = -5P
SOG PACKAGE
CASE 751G
CROSS REFERENCE/ORDERING INFORMATION
PACKAGE
MOTOROLA
LANSDALE
P DIP 16
SO 16
P DIP 16
SO 16
P DIP 16
SO 16
MC145026P
MC145026D
MC145027P
MC145027DW
MC145028P
MC145028DW
ML145026EP
ML145026-5P
ML145027EP
ML145027-5P
ML145028EP
ML145028-5P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
ML145026
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
ML145027
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
ML145028
DECODERS
A1 1
A2 2
16 VDD
15 A6
A3 3
A4 4
14 A7
13 A8
A5 5
12 A9
R1 6
C1 7
VSS 8
11 VT
10 R2/C2
9 Din
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[LANSDALE]

Legacy Device:Motorola/Freescale MC145026, MC145027, MC145028
These devices are designed to be used as encoder/decoder pairs in remote control applications.
The ML145026 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 ML145027 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 ML145027 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 ML145028 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 ML145028 when two addresses are consecutively received (in one encoding sequence) which both match the local
address.

• Operating Temperature Range: TA= – 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: ML145026 = 2.5 to 18 V*
                                     ML145027, ML145028 = 4.5 to 18 V
• For Infrared Applications, See Application Note AN1016/D

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