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74LCX74 반도체 회로 부품 판매점

Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop with 5V Tolerant Inputs



Fairchild Semiconductor 로고
Fairchild Semiconductor
74LCX74 데이터시트, 핀배열, 회로
March 1995
Revised April 1999
74LCX74
Low Voltage Dual D-Type Positive
Edge-Triggered Flip-Flop with 5V Tolerant Inputs
General Description
The LCX74 is a dual D-type flip-flop with Asynchronous
Clear and Set inputs and complementary (Q, Q) outputs.
Information at the input is transferred to the outputs on the
positive edge of the clock pulse. After the Clock Pulse input
threshold voltage has been passed, the Data input is
locked out and information present will not be transferred to
the outputs until the next rising edge of the Clock Pulse
input.
Asynchronous Inputs:
LOW input to SD (Set) sets Q to HIGH level
LOW input to CD (Clear) sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on CD and SD makes both Q and Q
HIGH
Features
s 5V tolerant inputs
s 2.3V–3.6V VCC specifications provided
s 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance inputs and outputs
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74LCX74M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
74LCX74SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX74MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
D1, D2
CP1, CP2
CD1, CD2
SD1, SD2
Q1, Q1, Q2, Q2
Description
Data Inputs
Clock Pulse Inputs
Direct Clear Inputs
Direct Set Inputs
Outputs
© 1999 Fairchild Semiconductor Corporation DS012414.prf
www.fairchildsemi.com


74LCX74 데이터시트, 핀배열, 회로
Logic Symbols
IEEE/IEC
Truth Table
(Each Half)
Inputs
Outputs
SD CD CP D
Q
Q
L H XXH L
H L XXL H
L
L
XXH
H
H H
H H
HH
LL
L
H
H H L X Q0
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Clock Transition
Q0(Q0) = Previous Q(Q) before LOW-to-HIGH Transition of Clock
Q0
www.fairchildsemi.com
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74LCX74 flip-flop

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