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PDF MC74AC574 Data sheet ( Hoja de datos )

Número de pieza MC74AC574
Descripción Octal D Flip-Flop with 3-State Outputs
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MC74AC574, MC74ACT574
Octal D Flip-Flop with
3-State 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
Figure 1. Pinout: 20–Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN FUNCTION
D0–D7
CP
Data Inputs
Clock Pulse Input
OE 3–State Output Enable Input
O0–O7
3–State Outputs
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20
1
20
1
20
1
PDIP–20
N SUFFIX
CASE 738
SO–20
DW SUFFIX
CASE 751
TSSOP–20
DT SUFFIX
CASE 948E
20
1
EIAJ–20
M SUFFIX
CASE 967
ORDERING INFORMATION
Device
Package
Shipping
MC74AC574N
PDIP–20 18 Units/Rail
MC74ACT574N
PDIP–20 18 Units/Rail
MC74AC574DW
SOIC–20 38 Units/Rail
MC74AC574DWR2 SOIC–20 1000 Tape & Reel
MC74ACT574DW SOIC–20 38 Units/Rail
MC74ACT574DWR2 SOIC–20 1000 Tape & Reel
MC74AC574DT
TSSOP–20 75 Units/Rail
MC74AC574DTR2 TSSOP–20 2500 Tape & Reel
MC74ACT574DT TSSOP–20 75 Units/Rail
MC74ACT574DTR2 TSSOP–20 2500 Tape & Reel
MC74AC574M
EIAJ–20 40 Units/Rail
MC74AC574MEL
EIAJ–20 2000 Tape & Reel
MC74ACT574M
EIAJ–20 40 Units/Rail
MC74ACT574MEL EIAJ–20 2000 Tape & Reel
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2001
May, 2001 – Rev. 6
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Publication Order Number:
MC74AC574/D

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MC74AC574 pdf
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MC74AC574, MC74ACT574
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
fmax
tPLH
tPHL
tPZH
Maximum Clock
Frequency
Propagation Delay
CP to On
Propagation Delay
CP to On
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
3.3 75
5.0 95
3.3 3.5
5.0 2.0
3.3 3.5
5.0 2.0
3.3 2.5
5.0 2.0
3.3 3.0
5.0 1.5
––
––
– 13.5
– 9.5
– 12
– 8.5
– 11
– 8.5
– 10.5
– 8.0
3.3 4.0 – 12
5.0 2.0 – 9.5
3.3 2.0 – 9.0
5.0 1.5 – 7.5
74AC
TA = –40°C
to +85°C
CL = 50 pF
Min Max
60 –
85 –
3.5 15
2.0 11
3.5 13.5
2.0 9.5
2.5 12
2.0 9.0
3.5 11.5
2.0 9.0
4.5 13
2.0 10.5
2.5 10
1.5 8.5
Unit
MHz
ns
ns
ns
ns
ns
ns
AC OPERATING REQUIREMENTS
Symbol
Parameter
Setup Time, HIGH or LOW
ts Dn to CP
Hold Time, HIGH or LOW
th Dn to CP
CP Pulse Width
tw 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)
3.3
5.0
3.3
5.0
3.3
5.0
74AC
74AC
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Typ Guaranteed Minimum
– 2.5
– 1.5
– 1.5
– 1.5
3.0
2.0
1.5
1.5
– 6.0
– 4.0
7.0
5.0
Unit
ns
ns
ns
Fig.
No.
3–3
3–6
3–6
3–7
3–8
3–7
3–8
Fig.
No.
3–9
3–9
3–6
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Notes
MC74AC574, MC74ACT574
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