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74F379PC 반도체 회로 부품 판매점

Quad Parallel Register with Enable



Fairchild 로고
Fairchild
74F379PC 데이터시트, 핀배열, 회로
May 1988
Revised August 1999
74F379
Quad Parallel Register with Enable
General Description
The 74F379 is a 4-bit register with buffered common
Enable. This device is similar to the 74F175 but features
the common Enable rather than common Master Reset.
Features
s Edge triggered D-type inputs
s Buffered positive edge-triggered clock
s Buffered common enable input
s True and complement outputs
Ordering Code:
Order Number Package Number
Package Description
74F379SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74F379SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F379PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation DS009527
www.fairchildsemi.com


74F379PC 데이터시트, 핀배열, 회로
Unit Loading/Fan Out
Pin Names
E
D0–D3
CP
Q0–Q3
Q0–Q3
Description
Enable Input (Active LOW)
Data Inputs
Clock Pulse Input (Active Rising Edge)
Flip-Flop Outputs
Complement Outputs
U.L.
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
50/33.3
50/33.3
Input IIH/IIL
Output IOH/IOL
20 µA/0.6 mA
20 µA/0.6 mA
20 µA/0.6 mA
1 mA/20 mA
1 mA/20 mA
Functional Description
The 74F379 consists of four edge-triggered D-type flip-
flops with individual D inputs and Q and Q outputs. The
Clock (CP) and Enable (E) inputs are common to all flip-
flops. When the E is input HIGH, the register will retain the
present data independent of the CP input. The Dn and E
inputs can change when the clock is in either state, pro-
vided that the recommended setup and hold times are
observed.
Truth Table
Inputs
E CP
H
L
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Transition
NC = No Change
Dn
X
H
L
Outputs
Qn Qn
NC NC
HL
LH
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
www.fairchildsemi.com
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74F379PC register

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