74AC273 Datasheet, PDF (1/10 Pages) STMicroelectronics – OCTAL D-TYPE FLIP FLOP WITH CLEAR

November 1988
Revised March 2005
74AC273 • 74ACT273
Octal D-Type Flip-Flop
General Description
The AC273 and ACT273 have eight edge-triggered D-type
flip-flops with individual D-type inputs and Q outputs. The
common buffered Clock (CP) and Master Reset (MR) input
load and reset (clear) all flip-flops simultaneously.
The register is fully edge-triggered. The state of each D-
type 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.
Features
s Ideal buffer for microprocessor or memory
s Eight edge-triggered D-type flip-flops
s Buffered common clock
s Buffered, asynchronous master reset
s See 377 for clock enable version
s See 373 for transparent latch version
s See 374 for 3-STATE version
s Outputs source/sink 24 mA
s 74ACT273 has TTL-compatible inputs
Ordering Code:
Order Number
Package
Number
Package Description
74AC273SC
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74AC273SJ
M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC273MTC
MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC273PC
N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74ACT273SC
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACT273SJ
M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACT273MTC
MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACT273MTCX_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
(Note 1)
Wide
74ACT273PC
N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
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