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부품번호 | MC74AC57 기능 |
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기능 | (MC74AC57 / MC74AC574) OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS | ||
제조업체 | Motorola Semiconductors | ||
로고 | |||
전체 8 페이지수
www.DataSheet4U.com
MC74AC57
MC74ACT574
Octal DĆType FlipĆFlop
with 3ĆState Outputs
The MC74AC574/74ACT574 is a high-speed, low power octal flip-flop with a
buffered common Clock (CP) and a buffered common Output Enable (OE). The
information presented to the D inputs is stored in the flip-flops on the LOW-to-HIGH
Clock (CP) transition.
The MC74AC574/74ACT574 is functionally identical to the MC74AC374/
74ACT374 except for the pinouts.
• Inputs and Outputs on Opposite Sides of Package
Allowing Easy Interface with Microprocessors
• Useful as Input or Output Port for Microprocessors
• Functionally Identical to MC74AC374/74ACT374
• 3-State Outputs for Bus-Oriented Applications
• Outputs Source/Sink 24 mA
• ′ACT574 Has TTL Compatible Inputs
VCC O0 O1 O2 O3 O4 O5 O6 O7 CP
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
OE D0 D1 D2 D3 D4 D5 D6 D7 GND
PIN NAMES
D0–D7
CP
OE
O0–O7
Data Inputs
Clock Pulse Input
3-State Output Enable Input
3-State Outputs
OCTAL D-TYPE
FLIP-FLOP WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
DW SUFFIX
CASE 751D-04
PLASTIC
LOGIC SYMBOL
D0 D1 D2 D3 D4 D5 D6 D7
CP
OE
O0 O1 O2 O3 O4 O5 O6 O7
DataSheet4 U .com
FACT DATA
5-1
www.DataSheet4U.com
MC74AC57 MC74ACT574
DC CHARACTERISTICS
Symbol
Parameter
VIH
VIL
VOH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
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
VOL
Maximum Low Level
Output Voltage
3.0 2.56
4.5 3.86
5.5 4.86
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
IIN Maximum Input
Leakage Current
3.0 0.36 0.44
4.5 0.36 0.44
5.5 0.36 0.44
5.5 ±0.1 ±1.0
IOZ Maximum
3-State
Current
5.5 ±0.5 ±5.0
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5 75
5.5 –75
5.5 8.0 80
* All outputs loaded; thresholds on input associated with output under test.
† Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
Unit
V
V
V
V
V
V
µA
µA
mA
mA
µA
Conditions
VOUT = 0.1 V
or VCC – 0.1 V
VOUT = 0.1 V
or VCC – 0.1 V
IOUT = –50 µA
*VIN = VIL or VIH
–12 mA
IOH –24 mA
–24 mA
IOUT = 50 µA
*VIN = VIL or VIH
12 mA
IOL 24 mA
24 mA
VI = VCC, GND
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65 V Max
VOHD = 3.85 V Min
VIN = VCC or GND
DataSheet4 U .com
FACT DATA
5-4
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MC74AC57 MC74ACT574
AC OPERATING REQUIREMENTS
Symbol
Parameter
ts
Setup Time, HIGH or LOW
Dn to CP
th
Hold Time, HIGH or LOW
Dn to CP
tw
CP Pulse Width
HIGH or LOW
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
VCC*
(V)
74ACT
74ACT
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Typ Guaranteed Minimum
5.0 2.5 2.5
Unit
ns
5.0 1.0 1.0 ns
5.0 3.0 4.0 ns
Fig.
No.
3-9
3-9
3-6
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
4.5
40
Unit
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
DataSheet4 U .com
FACT DATA
5-7
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |