MC74ACT273DT データシートの表示（PDF） - ON Semiconductor
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MC74ACT273DT Datasheet PDF : 12 Pages
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MC74AC273, MC74ACT273
Octal D Flip-Flop
The MC74AC273/74ACT273 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 transition, 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.
• Ideal Buffer for MOS Microprocessor or Memory
• Eight Edge-Triggered D Flip–Flops
• Buffered Common Clock
• Buffered, Asynchronous Master Reset
• See MC74AC377 for Clock Enable Version
• See MC74AC373 for Transparent Latch Version
• See MC74AC374 for 3-State Version
• Outputs Source/Sink 24 mA
• ′ACT273 Has TTL Compatible Inputs
VCC Q7 D7 D6 Q6 Q5 D5 D4 Q4 CP
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
MR Q0 D0 D1 Q1 Q2 D2 D3 Q3 GND
Figure 1. Pinout: 20–Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN
FUNCTION
D0–D7
MR
Data Inputs
Master Reset
CP
Clock Pulse Input
Q0–Q7
Data Outputs
http://onsemi.com
20
1
20
1
20
1
PDIP–20
N SUFFIX
CASE 738
SO–20
DW SUFFIX
CASE 751
TSSOP–20
DT SUFFIX
CASE 948E
20
1
EIAJ–20
M SUFFIX
CASE 967
ORDERING INFORMATION
Device
Package
Shipping
MC74AC273N
PDIP–20 18 Units/Rail
MC74ACT273N
PDIP–20 18 Units/Rail
MC74AC273DW
SOIC–20 38 Units/Rail
MC74AC273DWR2 SOIC–20 1000 Tape & Reel
MC74ACT273DW SOIC–20 38 Units/Rail
MC74ACT273DWR2 SOIC–20 1000 Tape & Reel
MC74AC273DT
TSSOP–20 75 Units/Rail
MC74AC273DTR2 TSSOP–20 2500 Tape & Reel
MC74ACT273DT TSSOP–20 75 Units/Rail
MC74ACT273DTR2 TSSOP–20 2500 Tape & Reel
MC74AC273M
EIAJ–20 40 Units/Rail
MC74AC273MEL
EIAJ–20 2000 Tape & Reel
MC74ACT273M
EIAJ–20 40 Units/Rail
MC74ACT273MEL EIAJ–20 2000 Tape & Reel
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2001
1
May, 2001 – Rev. 5
Publication Order Number:
MC74AC273/D
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