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MC14559B 데이터시트 PDF




Motorola Semiconductors에서 제조한 전자 부품 MC14559B은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 MC14559B 기능
기능 (MC14549B / MC14559B) SUCCESSIVE APPROXIMATION REGISTERS
제조업체 Motorola Semiconductors
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MC14559B 데이터시트, 핀배열, 회로
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Successive Approximation
Registers
MC14549B
MC14559B
The MC14549B and MC14559B successive approximation registers are
8–bit registers providing all the digital control and storage necessary for
successive approximation analog–to–digital conversion systems. These
parts differ in only one control input. The Master Reset (MR) on the
MC14549B is required in the cascaded mode when more than 8 bits are
desired. The Feed Forward (FF) of the MC14559B is used for register
shortening where End–of–Conversion (EOC) is required after less than eight
cycles.
Applications for the MC14549B and MC14559B include analog–to–digital
conversion, with serial and parallel outputs.
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
Totally Synchronous Operation
All Outputs Buffered
Single Supply Operation
Serial Output
Retriggerable
Compatible with a Variety of Digital and Analog Systems such as the
MC1408 8–Bit D/A Converter
All Control Inputs Positive–Edge Triggered
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low–Power TTL Loads, One Low–Power
Schottky TTL Load or Two HTL Loads Over the Rated Temperature
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎRange
Chip Complexity: 488 FETs or 122 Equivalent Gates
www.DataSheet4U.com
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎMAXIMUM RATINGS* (Voltages referenced to VSS)
Rating
Symbol
Value
Unit
DC Supply Voltage
VDD
– 0.5 to + 18
Vdc
Input Voltage, All Inputs
Vin – 0.5 to VDD + 0.5 Vdc
DC Input Current, per Pin
Iin ± 10 mAdc
Power Dissipation, per Package† PD 500 mW
Operating Temperature Range
TA
– 55 to + 125
_C
Storage Temperature Range
Tstg
– 65 to + 150
_C
* Maximum Ratings are those values beyond which damage to the device may occur.
†Temperature Derating:
“P and D/DW” Packages: – 7.0 mW/C From 65_ C To 125_ C Ceramic
“L” Packages: – 12 mW/_ C From 100_ C To 125_ C
DW SUFFIX
SOIC
CASE 751G
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBDW
Plastic
Ceramic
SOIC
TA = – 55° to 125°C for all packages.
PIN ASSIGNMENT
Q4 1
Q5 2
16 VDD
15 Q3
Q6 3
14 Q2
Q7 4
13 Q1
Sout 5
D6
12 Q0
11 EOC
C7
VSS 8
10 *
9 SC
* For MC14549B Pin 10 is MR input.
For MC14559B Pin 10 is FF input.
MC14549B
TRUTH TABLES
MC14559B
SC SC(t–1) MR MR(t–1) Clock Action
SC SC(t–1) EOC Clock Action
X XX X
None
XXX
None
XX1 X
Reset
1 00 0
Start
Conversion
1 X0 1
Start
Conversion
1 10 0
Continue
Conversion
0 X0 X
Continue
Previous
Operation
X = Don’t Care t–1 = State at Previous Clock
100
X10
000
0X1
1X1
Start
Conversion
Continue
Conversion
Continue
Conversion
Retain
Conversion
Result
Start
Conversion
REV 3
1/94
©MMOotoTrOolaR, IOncL. A199C5MOS LOGIC DATA
MC14549B MC14559B
1




MC14559B pdf, 반도체, 판매, 대치품
PROGRAMMABLE
PULSE
GENERATOR
SWITCHING TIME TEST CIRCUIT AND WAVEFORMS
VDD
C
SC
FF(MR)
D
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
EOC
Sout
VSS
CL
CL
CL
CL
C
SC
D
Q7
Sout
CL
CL
CL
CL
CL
1
fcl
tWH(cl)
50%
tsu
50%
tsu
50%
tPLH
50% 90%
tTLH
CL
tsu
tPHL
10%
tTHL
NOTE: Pin 10 = VSS
tWH(D)
tPLH
50% 90%
10%
tTLH
TIMING DIAGRAM
CLOCK
SC
ÉÉÉD
ÉÉÉQ7
ÉÉÉQ6
ÉÉÉQ5
ÉÉÉÉÉÉQ4
ÉÉÉQ3
ÉÉÉQ2
ÉÉÉQ1
ÉÉÉQ0
ÉÉÉEOC
ÉÉÉSout INH Q7 Q6 INH Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 Q8* INH
ÉÉÉ— Don’t care condition
ÉÉÉINH — Indicates Serial Out is inhibited low.
* — Q8 is ninth–bit of serial information available from 8–bit register.
NOTE: Pin 10 = VSS
MC14549B MC14559B
4
MOTOROLA CMOS LOGIC DATA

4페이지










MC14559B 전자부품, 판매, 대치품
SC C Sout
MC14559B
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 FF EOC
C
SC Sout
MC14549B
MR
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 EOC
TO DAC
TO DAC
EOC
Figure 4. Continuously Cycling 12–Bit ADC
Sout
the 12–bit conversion cycle, the end of the serial output
word, and the validity of the parallel data output.
Externally Controlled 12–Bit ADC (Figure 5)
In this circuit the external pulse starts the first SAR and
simultaneously resets the cascaded second SAR. When Q4
of the first SAR goes high, the second SAR starts conver-
sion, and the first one stops conversion. EOC indicates that
the parallel data are valid and that the serial output is com-
plete. Updating the output data is started with every external
control pulse.
Additional Motorola Parts for Successive
Approximation ADC
Monolithic digital–to–analog converters — The
MC1408/1508 converter has eight–bit resolution and is avail-
able with 6, 7, and 8–bit accuracy. The amplifier–compara-
tor block — The MC1407/1507 contains a high speed
operational amplifier and a high speed comparator with ad-
justable window.
With these two linear parts it is possible to construct SA–
ADCs with an accuracy of up to eight bits, using as the regis-
ter one MC14549B or one MC14559B. An additional CMOS
block will be necessary to generate the clock frequency.
Additional information on successive approximation ADC
is found in Motorola Application Note AN–716.
SC C Sout
MC14559B
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 FF EOC
C
SC Sout
MC14549B
MR
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 EOC
TO DAC
TO DAC
Figure 5. Externally Controlled 12–Bit ADC
EOC Sout
MOTOROLA CMOS LOGIC DATA
MC14549B MC14559B
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
MC14559B

Successive Approximation Registers

ON Semiconductor
ON Semiconductor
MC14559B

(MC14549B / MC14559B) SUCCESSIVE APPROXIMATION REGISTERS

Motorola Semiconductors
Motorola Semiconductors

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