Motorola MC145028D, MC145028P, MC145027P, MC145026D, MC145026P Datasheet

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

•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

MC145026

MC145027

MC145028

SC41343

SC41344

			P SUFFIX
			PLASTIC DIP
	16		CASE 648
	1
			D SUFFIX
	16	SOG PACKAGE
			CASE 751B
	1
	16		DW SUFFIX
		SOG PACKAGE
			CASE 751G
	1
	ORDERING INFORMATION
	MC145026P		Plastic DIP
	MC145026D		SOG Package
	MC145027P, SC41343P		Plastic DIP
	MC145027DW, SC41343DW		SOG Package
	MC145028P, SC41344P		Plastic DIP
	MC145028DW, SC41344DW		SOG Package

							PIN ASSIGNMENTS
		MC145026					MC145027/SC41343						MC145028/SC41344
		ENCODER							DECODERS						DECODERS
A1		1	16		VDD		A1		1	16		VDD	A1		1	16		VDD
A2		2	15		Dout		A2		2	15		D6	A2		2	15		A6
					TE
A3		3	14				A3		3	14		D7	A3		3	14		A7
A4		4	13		RTC		A4		4	13		D8	A4		4	13		A8
A5		5	12		CTC		A5		5	12		D9	A5		5	12		A9
A6/D6		6	11		RS		R1		6	11		VT	R1		6	11		VT
A7/D7		7	10		A9/D9		C1		7	10		R2/C2	C1		7	10		R2/C2
VSS		8	9		A8/D8		VSS		8	9		Din	VSS		8	9		Din

*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.

REV 2 1/98

Motorola, Inc. 1998	MC145026•MC145027•
MOTOROLA

1

RS RTC

CTC

TE

11

12

13

14	3±PIN						4		DATA SELECT
	OSCILLATOR					DIVIDER			AND	15	Dout
	AND
									BUFFER
	ENABLE
	9	RING COUNTER AND 1±OF±9 DECODER
		8	7	6	5	4	3	2	1
A1	1
A2	2
A3	3
A4	4
A5	5									TRINARY
										DETECTOR
	6
A6/D6
A7/D7	7
A8/D8	9									VDD = PIN 16
A9/D9	10									VSS = PIN 8

Figure 1. MC145026 Encoder Block Diagram

									11	VT
						SHIFT REGISTER			15	D6
				CONTROL
				LOGIC					14	D7
							LATCH
									13	D8
						4±BIT			12	D9
		SEQUENCER CIRCUIT
	5	4	3	2	1
A1	1
A2	2
A3	3					DATA		9	Din
						EXTRACTOR
	4
A4
					C1	C2	V		= PIN 16
	5							DD
A5					7	6 10
							VSS = PIN 8
						R1
						R2

Figure 2. MC145027 Decoder Block Diagram

MC145026•MC145027•MC145028•SC41343•SC41344

MOTOROLA

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	CONTROL	11	VT
	LOGIC

				SEQUENCER CIRCUIT
	9	8	7	6	5	4	3	2	1
A1	1
												9±BIT
	2
A2												SHIFT
A3	3											REGISTER
A4	4
A5	5									DATA		9
										EXTRACTOR		Din
	15
A6									C1 7		C2
A7	14									6 10		VDD = PIN 16
A8	13									R1	R	VSS = PIN 8
											2
A9	12

Figure 3. MC145028 Decoder Block Diagram

MAXIMUM RATINGS* (Voltages Referenced to VSS)

Rating	Symbol	Value	Unit
VDD	DC Supply Voltage (except SC41343,	± 0.5 to + 18	V
	SC41344)
VDD	DC Supply Voltage (SC41343, SC41344	± 0.5 to + 10	V
	only)
Vin	DC Input Voltage	± 0.5 to VDD + 0.5	V
Vout	DC Output Voltage	± 0.5 to VDD + 0.5	V
Iin	DC Input Current, per Pin	± 10	mA
Iout	DC Output Current, per Pin	± 10	mA
PD	Power Dissipation, per Package	500	mW
Tstg	Storage Temperature	± 65 to + 150	°C
TL	Lead Temperature, 1 mm from Case for	260	°C
	10 Seconds

*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the limits in the Electrical Characteristics tables or Pin Descriptions section.

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high±impedance circuit. For proper operation, Vin and Vout should be constrained to the range VSS ≤ (Vin or Vout) ≤ VDD.

MOTOROLA

MC145026•MC145027•MC145028•SC41343•SC41344

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ELECTRICAL CHARACTERISTICS Ð MC145026*, MC145027, and MC145028 (Voltage Referenced to VSS)

Guaranteed Limit

VDD

± 40°C

25°C

85°C

Symbol

Characteristic

V

Min

Max

Min

Max

Min

Max

Unit

VOL

Low±Level Output Voltage

(Vin = VDD or 0)

5.0

Ð

0.05

Ð

0.05

Ð

0.05

V

10

Ð

0.05

Ð

0.05

Ð

0.05

15

Ð

0.05

Ð

0.05

Ð

0.05

VOH

High±Level Output Voltage

(Vin = 0 or VDD)

5.0

4.95

Ð

4.95

Ð

4.95

Ð

V

10

9.95

Ð

9.95

Ð

9.95

Ð

15

14.95

Ð

14.95

Ð

14.95

Ð

VIL

Low±Level Input Voltage

(Vout = 4.5 or 0.5 V)

5.0

Ð

1.5

Ð

1.5

Ð

1.5

V

(Vout = 9.0 or 1.0 V)

10

Ð

3.0

Ð

3.0

Ð

3.0

(Vout = 13.5 or 1.5 V)

15

Ð

4.0

Ð

4.0

Ð

4.0

VIH

High±Level Input Voltage

(Vout = 0.5 or 4.5 V)

5.0

3.5

Ð

3.5

Ð

3.5

Ð

V

(Vout = 1.0 or 9.0 V)

10

7.0

Ð

7.0

Ð

7.0

Ð

(Vout = 1.5 or 13.5 V)

15

11

Ð

11

Ð

11

Ð

IOH

High±Level Output Current

(Vout = 2.5 V)

5.0

± 2.5

Ð

± 2.1

Ð

± 1.7

Ð

mA

(Vout = 4.6 V)

5.0

± 0.52

Ð

± 0.44

Ð

± 0.36

Ð

(Vout = 9.5 V)

10

± 1.3

Ð

± 1.1

Ð

± 0.9

Ð

(Vout = 13.5 V)

15

± 3.6

Ð

± 3.0

Ð

± 2.4

Ð

IOL

Low±Level Output Current

(Vout = 0.4 V)

5.0

0.52

Ð

0.44

Ð

0.36

Ð

mA

(Vout = 0.5 V)

10

1.3

Ð

1.1

Ð

0.9

Ð

(Vout = 1.5 V)

15

3.6

Ð

3.0

Ð

2.4

Ð

Iin

Input Current Ð TE

5.0

Ð

Ð

3.0

11

Ð

Ð

μA

(MC145026, Pull±Up Device)

10

Ð

Ð

16

60

Ð

Ð

15

Ð

Ð

35

120

Ð

Ð

Iin

Input Current

15

Ð

± 0.3

Ð

± 0.3

Ð

± 1.0

μA

RS (MC145026), Din (MC145027, MC145028)

Iin

Input Current

± 110

μA

A1 ± A5, A6/D6 ± A9/D9 (MC145026),

5.0

Ð

Ð

Ð

Ð

Ð

A1 ± A5 (MC145027),

10

Ð

Ð

Ð

± 500

Ð

Ð

A1 ± A9 (MC145028)

15

Ð

Ð

Ð

± 1000

Ð

Ð

Cin

Input Capacitance (Vin = 0)

Ð

Ð

Ð

Ð

7.5

Ð

Ð

pF

IDD

Quiescent Current Ð MC145026

5.0

Ð

Ð

Ð

0.1

Ð

Ð

μA

10

Ð

Ð

Ð

0.2

Ð

Ð

15

Ð

Ð

Ð

0.3

Ð

Ð

IDD

Quiescent Current Ð MC145027, MC145028

5.0

Ð

Ð

Ð

50

Ð

Ð

μA

10

Ð

Ð

Ð

100

Ð

Ð

15

Ð

Ð

Ð

150

Ð

Ð

Idd

Dynamic Supply Current Ð MC145026

5.0

Ð

Ð

Ð

200

Ð

Ð

μA

(fc = 20 kHz)

10

Ð

Ð

Ð

400

Ð

Ð

15

Ð

Ð

Ð

600

Ð

Ð

Idd

Dynamic Supply Current Ð MC145027, MC145028

5.0

Ð

Ð

Ð

400

Ð

Ð

μA

(fc = 20 kHz)

10

Ð

Ð

Ð

800

Ð

Ð

15

Ð

Ð

Ð

1200

Ð

Ð

* Also see next Electrical Characteristics table for 2.5 V specifications.

MC145026•MC145027•MC145028•SC41343•SC41344

MOTOROLA

4

ELECTRICAL CHARACTERISTICS Ð MC145026 (Voltage Referenced to VSS)

Guaranteed Limit

VDD

± 40°C

25°C

85°C

Symbol

Characteristic

V

Min

Max

Min

Max

Min

Max

Unit

VOL

Low±Level Output Voltage

(Vin = 0 V or VDD)

2.5

Ð

0.05

Ð

0.05

Ð

0.05

V

VOH

High±Level Output Voltage

(Vin = 0 V or VDD)

2.5

2.45

Ð

2.45

Ð

2.45

Ð

V

VIL

Low±Level Input Voltage

(Vout = 0.5 V or 2.0 V)

2.5

Ð

0.3

Ð

0.3

Ð

0.3

V

VIH

High±Level Input Voltage

(Vout = 0.5 V or 2.0 V)

2.5

2.2

Ð

2.2

Ð

2.2

Ð

V

IOH

High±Level Output Current

(Vout = 1.25 V)

2.5

0.28

Ð

0.25

Ð

0.2

Ð

mA

IOL

Low±Level Output Current

(Vout = 0.4 V)

2.5

0.22

Ð

0.2

Ð

0.16

Ð

mA

Iin

Input Current (TE Ð Pull±Up Device)

2.5

Ð

Ð

0.09

1.8

Ð

Ð

μA

Iin

Input Current (A1±A5, A6/D6±A9/D9)

2.5

Ð

Ð

Ð

± 25

Ð

Ð

μA

IDD

Quiescent Current

2.5

Ð

Ð

Ð

0.05

Ð

Ð

μA

Idd

Dynamic Supply Current (fc = 20 kHz)

2.5

Ð

Ð

Ð

40

Ð

Ð

μA

ELECTRICAL CHARACTERISTICS Ð SC41343 and SC41344 (Voltage Referenced to VSS)

						Guaranteed Limit
			VDD	± 40°C		25°C		85°C
Symbol	Characteristic		V	Min	Max	Min	Max	Min	Max	Unit
VOL	Low±Level Output Voltage	(Vin = 0 V or VDD)	2.8	Ð	0.05	Ð	0.05	Ð	0.05	V
			5.0	Ð	0.05	Ð	0.05	Ð	0.05
			10	Ð	0.05	Ð	0.05	Ð	0.05
VOH	High±Level Output Voltage	(Vin = 0 V or VDD)	2.8	2.75	Ð	2.75	Ð	2.75	Ð	V
			5.0	4.95	Ð	4.95	Ð	4.95	Ð
			10	9.95	Ð	9.95	Ð	9.95	Ð
VIL	Low±Level Input Voltage	(Vout = 2.3 V or 0.5 V)	2.8	Ð	0.84	Ð	0.84	Ð	0.84	V
		(Vout = 4.5 V or 0.5 V)	5.0	Ð	1.5	Ð	1.5	Ð	1.5
		(Vout = 9.0 V or 1.0 V)	10	Ð	3.0	Ð	3.0	Ð	3.0
VIH	High±Level Input Voltage	(Vout = 0.5 V or 2.3 V)	2.8	1.96	Ð	1.96	Ð	1.96	Ð	V
		(Vout = 0.5 V or 4.5 V)	5.0	3.5	Ð	3.5	Ð	3.5	Ð
		(Vout = 1.0 V or 9.0 V)	10	7.0	Ð	7.0	Ð	7.0	Ð
IOH	High±Level Output Current	(Vout = 1.4 V)	2.8	± 0.73	Ð	± 0.7	Ð	± 0.55	Ð	mA
		(Vout = 4.5 V)	5.0	± 0.59	Ð	± 0.5	Ð	± 0.41	Ð
		(Vout = 9.0 V)	10	± 1.3	Ð	± 1.1	Ð	± 0.9	Ð
IOL	Low±Level Output Current	(Vout = 0.4 V)	2.8	0.35	Ð	0.3	Ð	0.24	Ð	mA
		(Vout = 0.5 V)	5.0	0.8	Ð	0.6	Ð	0.4	Ð
		(Vout = 1.0 V)	10	3.5	Ð	2.9	Ð	2.3	Ð
Iin	Input Current Ð D in		10	Ð	± 0.3	Ð	± 0.3	Ð	± 1.0	μA
Iin	Input Current		2.8	Ð	Ð	Ð	± 30	Ð	Ð	μA
	A1 ± A5 (SC41343)		5.0	Ð	Ð	Ð	± 140	Ð	Ð
	A1 ± A9 (SC41344)		10	Ð	Ð	Ð	± 600	Ð	Ð
Cin	Input Capacitance (Vin = 0)		Ð	Ð	Ð	Ð	7.5	Ð	Ð	pF
IDD	Quiescent Current		2.8	Ð	Ð	Ð	60	Ð	Ð	μA
			5.0	Ð	Ð	Ð	75	Ð	Ð
			10	Ð	Ð	Ð	150	Ð	Ð
Idd	Dynamic Supply Current (fc = 20 kHz)		2.8	Ð	Ð	Ð	300	Ð	Ð	μA
			5.0	Ð	Ð	Ð	500	Ð	Ð
			10	Ð	Ð	Ð	1000	Ð	Ð

MOTOROLA MC145026•MC145027•MC145028•SC41343•SC41344

5

SWITCHING CHARACTERISTICS Ð MC145026*, MC145027, and MC145028 (CL = 50 pF, TA = 25°C)

			Figure		Guaranteed Limit
Symbol		Characteristic	No.	VDD	Min	Max	Unit
tTLH, tTHL	Output Transition Time		4,8	5.0	Ð	200	ns
				10	Ð	100
				15	Ð	80
tr	Din Rise Time Ð Decoders		5	5.0	Ð	15	μs
				10	Ð	15
				15	Ð	15
tf	Din Fall Time Ð Decoders		5	5.0	Ð	15	μs
				10	Ð	5.0
				15	Ð	4.0
fosc	Encoder Clock Frequency		6	5.0	0.001	2.0	MHz
				10	0.001	5.0
				15	0.001	10
f	Decoder Frequency Ð Referenced to Encoder Clock		12	5.0	1.0	240	kHz
				10	1.0	410
				15	1.0	450
tw	TE Pulse Width Ð Encoders		7	5.0	65	Ð	ns
				10	30	Ð
				15	20	Ð

* Also see next Switching Characteristics table for 2.5 V specifications.

SWITCHING CHARACTERISTICS Ð MC145026 (CL = 50 pF, TA = 25°C)

				Figure		Guaranteed Limit
Symbol			Characteristic	No.	VDD	Min	Max	Unit
tTLH, tTHL		Output Transition Time		4, 8	2.5	Ð	450	ns
fosc		Encoder Clock Frequency		6	2.5	1.0	250	kHz
tw		TE Pulse Width		7	2.5	1.5	Ð	μs

SWITCHING CHARACTERISTICS Ð SC41343 and SC41344 (CL = 50 pF, TA = 25°C)

		Figure		Guaranteed Limit
Symbol	Characteristic	No.	VDD	Min	Max	Unit
tTLH, tTHL	Output Transition Time	4, 8	2.8	Ð	320	ns
			5.0	Ð	200
			10	Ð	100
tr	Din Rise Time	5	2.8	Ð	15	μs
			5.0	Ð	15
			10	Ð	15
tf	Din Fall Time	5	2.8	Ð	15	μs
			5.0	Ð	15
			10	Ð	5.0
f	Decoder Frequency Ð Referenced to Encoder Clock	12	2.8	1.0	100	kHz
			5.0	1.0	240
			10	1.0	410

MC145026•MC145027•MC145028•SC41343•SC41344

MOTOROLA

6