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부품번호 | MC74AC273 기능 |
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기능 | Octal D Flip-Flop | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 8 페이지수
MC74AC273, MC74ACT273
Octal D Flip-Flop
The MC74AC273/74ACT273 has eight edge-triggered D−type
flip−flops with individual D inputs and Q outputs. The common
buffered Clock (CP) and Master Reset (MR) inputs load and reset
(clear) all flip−flops simultaneously.
The register is fully edge-triggered. The state of each D input, one
setup time before the LOW−to−HIGH clock transition, is transferred
to the corresponding flip−flop’s Q output.
All outputs will be forced LOW independently of Clock or Data
inputs by a LOW voltage level on the MR input. The device is useful
for applications where the true output only is required and the Clock
and Master Reset are common to all storage elements.
Features
• Ideal Buffer for MOS Microprocessor or Memory
• Eight Edge-Triggered D Flip−Flops
• Buffered Common Clock
• Buffered, Asynchronous Master Reset
• See MC74AC377 for Clock Enable Version
• See MC74AC373 for Transparent Latch Version
• See MC74AC374 for 3-State Version
• Outputs Source/Sink 24 mA
• ′ACT273 Has TTL Compatible Inputs
• These are Pb−Free Devices
VCC Q7 D7 D6 Q6 Q5 D5 D4 Q4 CP
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
MR Q0 D0 D1 Q1 Q2 D2 D3 Q3 GND
(Top View)
Pinout: 20−Lead Packages Conductors
MODE SELECT-FUNCTION TABLE
Operating Mode
Reset (Clear)
Inputs
MR CP
LX
Dn
X
Load ′1′
HH
Load ′0′
HL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Clock Transition
Outputs
Qn
L
H
L
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20
1
SOIC−20WB
SUFFIX DW
CASE 751D
20
1
TSSOP−20
SUFFIX DT
CASE 948E
PIN ASSIGNMENT
PIN
D0−D7
MR
CP
FUNCTION
Data Inputs
Master Reset
Clock Pulse Input
Q0−Q7
Data Outputs
D0 D1 D2 D3 D4 D5 D6 D7
CP
MR
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Logic Symbol
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
December, 2016 − Rev. 8
1
Publication Order Number:
MC74AC273/D
MC74AC273, MC74ACT273
DC CHARACTERISTICS
Symbol
Parameter
VIH Minimum High Level Input Voltage
VIL Maximum Low Level Input Voltage
VOH Minimum High Level Output Voltage
VCC
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
74AC
74AC
TA = +25°C
TA = −40°C to +85°C
Typ Guaranteed Limits
1.5 2.1
2.25 3.15
2.75 3.85
2.1
3.15
3.85
1.5 0.9
2.25 1.35
2.75 1.65
0.9
1.35
1.65
2.99 2.9
4.49 4.4
5.49 5.4
2.9
4.4
5.4
Unit
V
V
V
3.0 − 2.56
4.5 − 3.86
5.5 − 4.86
VOL Maximum Low Level Output Voltage 3.0 0.002 0.1
4.5 0.001 0.1
5.5 0.001 0.1
2.46
3.76
4.76
0.1
0.1
0.1
V
V
3.0 − 0.36
4.5 − 0.36
5.5 − 0.36
0.44
0.44
0.44
V
IIN Maximum Input Leakage Current
5.5 − ±0.1
±1.0
mA
IOLD
IOHD
†Minimum Dynamic Output Current
5.5
5.5
−
−
−
−
75 mA
−75
ICC Maximum Quiescent Supply Current 5.5 − 8.0 80 mA
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE: Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
Conditions
VOUT = 0.1 V
or VCC − 0.1 V
VOUT = 0.1 V
or VCC − 0.1 V
IOUT = −50 mA
*VIN = VIL or VIH
−12 mA
IOH −24 mA
−24 mA
IOUT = 50 mA
*VIN = VIL or VIH
12 mA
IOL 24 mA
24 mA
VI = VCC, GND
VOLD = 1.65 V Max
VOHD = 3.85 V Min
VIN = VCC or GND
AC CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
Symbol
Parameter
VCC*
(V)
74AC
TA = +25°C CL = 50 pF
Min Typ Max
fmax
Maximum Clock
Frequency
3.3 90
5.0 140
125
175
−
−
tPLH
Propagation Delay
Clock to Output
3.3 4.0
5.0 3.0
7.0 12.5
5.5 9.0
tPHL
Propagation Delay
Clock to Output
3.3 4.0
5.0 3.0
7.0 13.0
5.0 10.0
tPHL
Propagation Delay
MR to Output
3.3 4.0
5.0 3.0
7.0
5.0
*Voltage Range 3.3 V is 3.3 V ±0.3 V. Voltage Range 5.0 V is 5.0 V ±0.5 V.
13.0
10.0
74AC
TA = −40°C to +85°C CL = 50 pF
Min Max
75 −
125 −
3.0 14.0
2.5 10.0
3.5 14.5
2.5 11.0
3.5 14.0
2.5 10.5
Unit
Mhz
ns
ns
ns
Figure
No.
3−3
3−6
3−6
3−6
AC OPERATING REQUIREMENTS
Symbol
Parameter
VCC*
(V)
74AC
74AC
TA = +25°C CL = 50 pF TA = −40°C to +85°C CL = 50 pF
Typ Guaranteed Minimum
ts
Setup Time, HIGH or LOW
Data to CP
3.3 3.5
5.0 2.5
5.5
4.0
6.0
4.5
th
Hold Time, HIGH or LOW
Data to CP
3.3 −2.0
5.0 −1.0
0
1.0
0
1.0
tw
Clock Pulse Width
HIGH or LOW
3.3 3.5
5.0 2.5
5.5
4.0
6.0
4.5
tw
MR Pulse Width
HIGH or LOW
3.3 2.0
5.0 1.5
5.5
4.0
6.0
4.5
trec
Recovery Time
MR to CP
3.3 1.5
5.0 1.0
3.5
2.0
*Voltage Range 3.3 V is 3.3 V ±0.3 V. Voltage Range 5.0 V is 5.0 V ±0.5 V.
4.5
3.0
Unit
Figure
No.
ns 3−9
ns 3−9
ns 3−6
ns 3−6
ns 3−9
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4
4페이지 MC74AC273, MC74ACT273
PACKAGE DIMENSIONS
0.15 (0.006) T U S
2X L/2 20
L
PIN 1
IDENT
1
0.15 (0.006) T U S
C
D
0.100 (0.004)
−T− SEATING
PLANE
TSSOP−20
DT SUFFIX
CASE 948E−02
ISSUE C
20X K REF
0.10 (0.004) M T U S V S
11
B
−U−
10
K
J JÍÍÍ1 ÍÍÍKÍÍÍ1 ÍÍÍ
SECTION N−N
N 0.25 (0.010)
M
AN
−V−
F
DETAIL E
GH
DETAIL E
SOLDERING FOOTPRINT*
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION:
MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION
SHALL NOT EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 6.40 6.60 0.252 0.260
B 4.30 4.50 0.169 0.177
C --- 1.20 --- 0.047
D 0.05 0.15 0.002 0.006
F 0.50 0.75 0.020 0.030
−W−
G 0.65 BSC
0.026 BSC
H 0.27 0.37 0.011 0.015
J 0.09 0.20 0.004 0.008
J1 0.09 0.16 0.004 0.006
K 0.19 0.30 0.007 0.012
K1 0.19 0.25 0.007 0.010
L 6.40 BSC
0.252 BSC
M 0_ 8_ 0_ 8_
7.06
1
0.65
PITCH
16X
0.36
16X
1.26
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
www.onsemi.com
7
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부품번호 | 상세설명 및 기능 | 제조사 |
MC74AC273 | Octal D Flip-Flop | ON Semiconductor |
MC74AC273 | OCTAL D FLIP-FLOP | Motorola Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |