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  ON Semiconductor Electronic Components Datasheet  

MC74LCX574 Datasheet

Low-Voltage CMOS Octal D-Type Flip-Flop

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MC74LCX574 pdf
MC74LCX574
Low−Voltage CMOS
Octal D−Type Flip−Flop
Flow Through Pinout
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The MC74LCX574 is a high performance, non−inverting octal
D−type flip−flop operating from a 2.3 to 3.6 V supply. High
impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. A VI specification of 5.5 V allows
MC74LCX574 inputs to be safely driven from 5.0 V devices.
The MC74LCX574 consists of 8 edge−triggered flip−flops with
individual D−type inputs and 3−state true outputs. The buffered clock
and buffered Output Enable (OE) are common to all flip−flops. The
eight flip−flops will store the state of individual D inputs that meet the
setup and hold time requirements on the LOW−to−HIGH Clock (CP)
transition. With the OE LOW, the contents of the eight flip−flops are
available at the outputs. When the OE is HIGH, the outputs go to the
high impedance state. The OE input level does not affect the operation
of the flip−flops. The LCX574 flow through design facilitates easy PC
board layout.
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Features
Designed for 2.3 to 3.6 V VCC Operation
5 V Tolerant − Interface Capability With 5 V TTL Logic
Supports Live Insertion and Withdrawal
IOFF Specification Guarantees High Impedance When VCC = 0 V
LVTTL Compatible
LVCMOS Compatible
24mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current in All Three Logic States (10 mA)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds 500 mA
ESD Performance: Human Body Model >2000 V
Machine Model >200 V
Pb−Free Packages are Available*
http://onsemi.com
MARKING
DIAGRAMS
20
1
20
SOIC−20
DW SUFFIX
CASE 751D
1
LCX574
AWLYYWW
20
1
20
TSSOP−20
DT SUFFIX
CASE 948E
1
LCX
574
ALYW
20
1
20
SOEIAJ−20
M SUFFIX
CASE 967
1
74LCX574
AWLYWW
A
L, WL
Y, YY
W, WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
February, 2005 − Rev. 5
1
Publication Order Number:
MC74LCX574/D


  ON Semiconductor Electronic Components Datasheet  

MC74LCX574 Datasheet

Low-Voltage CMOS Octal D-Type Flip-Flop

No Preview Available !

MC74LCX574 pdf
MC74LCX574
VCC O0 O1 O2 O3 O4 O5 O6 O7 CP
20 19 18 17 16 15 14 13 12 11
1
OE
11
CP
2
D0
nCP
Q
D
19
O0
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 (Top View)
3
D1
4
D2
nCP
Q
D
nCP
Q
D
18
O1
17
O2
5
D3
nCP
Q
D
16
O3
PIN NAMES
Pins
Function
OE
CP
D0−D7
O0−O7
Output Enable Input
Clock Pulse Input
Data Inputs
3−State Outputs
6
D4
7
D5
8
D6
nCP
Q
D
nCP
Q
D
nCP
Q
D
15
O4
14
O5
13
O6
9
D7
nCP
Q
D
Figure 2. LOGIC DIAGRAM
12
O7
TRUTH TABLE
INPUTS
OE CP Dn
Ll
Lh
LX
HX
H
l
Hh
INTERNAL
LATCHES
Q
L
H
NC
NC
L
H
OUTPUTS
On
L
H
NC
Z
Z
Z
OPERATING MODE
Load and Read Register
Hold and Read Register
Hold and Disable Outputs
Load Internal Register and Disable Outputs
H = High Voltage Level
h = High Voltage Level One Setup Time Prior to the Low−to−High Clock Transition
L = Low Voltage Level
l = Low Voltage Level One Setup Time Prior to the Low−to−High Clock Transition
NC = No Change
X = High or Low Voltage Level and Transitions are Acceptable
Z = High Impedance State
= Low−to−High Transition
= Not a Low−to−High Transition; For ICC Reasons, DO NOT FLOAT Inputs
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2


Part Number MC74LCX574
Description Low-Voltage CMOS Octal D-Type Flip-Flop
Maker ON Semiconductor
Total Page 8 Pages
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