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74LS273 Datasheet

  • 74LS273

  • 8-Bit Register with Clear

  • 6頁(yè)

  • FAIRCHILD

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DM74LS273 8-Bit Register with Clear
October 1988
Revised March 2000
DM74LS273
8-Bit Register with Clear
General Description
The DM74LS273 is a high speed 8-bit register, consisting
of eight D-type flip-flops with a common Clock and an
asynchronous active LOW Master Reset. This device is
supplied in a 20-pin package featuring 0.3 inch row spac-
ing.
Features
s
Edge-triggered
s
8-bit high speed register
s
Parallel in and out
s
Common clock and master reset
Ordering Code:
Order Number
DM74LS273WM
DM74LS273SJ
DM74LS273N
Package Number
M20B
M20D
N20A
Package Description
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
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
Connection Diagram
V
CC
=
Pin 20
GND
=
Pin 10
Pin Descriptions
Pin Names
CP
D0鈥揇7
MR
Q0鈥換7
Data Inputs
Asynchronous Master Reset Input (Active LOW)
Flip-Flop Outputs
Description
Clock Pulse Input (Active Rising Edge)
Truth Table
Inputs
MR
L
H
H
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Outputs
D
n
X
H
L
Q
n
L
H
L
CP


X
漏 2000 Fairchild Semiconductor Corporation
DS009825
www.fairchildsemi.com

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