74F273 Fairchild, 74F273 Datasheet

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74F273

Manufacturer Part Number
74F273
Description
Octal D-Type Flip-Flop
Manufacturer
Fairchild
Datasheet

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© 1999 Fairchild Semiconductor Corporation
74F273SC
74F273SJ
74F273PC
74F273
Octal D-Type Flip-Flop
General Description
The 74F273 has eight edge-triggered D-type flip-flops with
individual D inputs and Q outputs. The common buffered
Clock (CP) and Master Reset (MR) inputs load and reset
(clear) all flip-flops simultaneously.
The register is fully edge-triggered. The state of each D
input, one setup time before the LOW-to-HIGH clock transi-
tion, is transferred to the corresponding flip-flop’s Q output.
All outputs will be forced LOW independently of Clock or
Data inputs by a LOW voltage level on the MR input. The
device is useful for applications where the true output only
is required and the Clock and Master Reset are common to
all storage elements.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Order Number
Package Number
IEEE/IEC
M20B
M20D
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS009511
Features
Connection Diagram
Ideal buffer for MOS microprocessor or memory
Eight edge-triggered D-type flip-flops
Buffered common clock
Buffered, asynchronous Master Reset
See 74F377 for clock enable version
See 74F373 for transparent latch version
See 74F374 for 3-STATE version
Package Description
April 1988
Revised August 1999
www.fairchildsemi.com

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74F273 Summary of contents

Page 1

... Octal D-Type Flip-Flop General Description The 74F273 has eight edge-triggered D-type flip-flops with individual D inputs and Q outputs. The common buffered Clock (CP) and Master Reset (MR) inputs load and reset (clear) all flip-flops simultaneously. The register is fully edge-triggered. The state of each D input, one setup time before the LOW-to-HIGH clock transi- tion, is transferred to the corresponding flip-flop’ ...

Page 2

... LOW Voltage Level one setup time prior to the LOW-to-HIGH clock transition  X Immaterial LOW-to-HIGH clock transition 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 U.L. Description HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 50/33 ...

Page 3

... Recognized as a LOW Signal Min Min Min Max V 2.7V IN Max V 7.0V IN Max V V OUT 0.0 All other pins grounded V 150 mV IOD 0.0 All other pins grounded Max V 0.5V IN Max OUT CP Max D MR HIGH n www.fairchildsemi.com ...

Page 4

... Hold Time, HIGH or LOW H t (L) Data (L) MR Pulse Width, LOW W t (H) CP Pulse Width W t (L) HIGH or LOW W t Recovery Time REC www.fairchildsemi.com 125 5. Min Typ Max Min ...

Page 5

... Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20B Package Number M20D 5 www.fairchildsemi.com ...

Page 6

... Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. ...

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