ꢀꢁꢂ ꢃ ꢄ ꢅꢆ ꢂꢇ ꢈꢉ ꢊ
ꢋ ꢅꢌꢍꢎ ꢏꢈꢌ ꢐꢑ ꢒ ꢓ ꢎꢔ ꢑ ꢈꢓ ꢎꢋ ꢑ
ꢕ ꢔꢌꢄ ꢅ ꢎꢒ ꢍꢖ
SCLS578A − MARCH 2004 − REVISED APRIL 2008
D
D
D
D
D
D
D
D
Qualified for Automotive Applications
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
D
D
Individual Data Input to Each Flip-Flop
Applications Include:
− Buffer/Storage Registers
− Shift Registers
Low Power Consumption, 160-µA Max I
CC
− Pattern Generators
Typical t = 13 ns
pd
4-mA Output Drive at 5 V
DW OR PW PACKAGE
(TOP VIEW)
Low Input Current of 1 µA Max
Contain Eight Flip-Flops With Single-Rail
Outputs
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CLR
1Q
1D
2D
2Q
3Q
3D
4D
4Q
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
D
Direct Clear Input
description/ordering information
This circuit is a positive-edge-triggered D-type
flip-flop with a direct clear (CLR) input.
GND
Information at the data (D) inputs meeting the setup
time requirements is transferred to the Q outputs on
the positive-going edge of the clock (CLK) pulse.
Clock triggering occurs at a particular voltage level and is not related directly to the transition time of the
positive-going pulse. When CLK is at either the high or low level, the D input has no effect at the output.
{
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
‡
PACKAGE
T
A
SOIC − DW
Reel of 2000
Reel of 2000
SN74HC273QDWRQ1
SN74HC273QPWRQ1
HC273Q
HC273Q
−40°C to 125°C
TSSOP − PW
†
‡
For the most current package and ordering information, see the Package Option Addendum at the end of
this document, or see the TI web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUT
Q
CLR
L
CLK
X
D
X
H
L
L
H
L
H
↑
H
↑
H
L
X
Q
0
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
ꢑ
ꢑ
ꢖ
ꢋ
ꢧ
ꢏ
ꢢ
ꢗ
ꢅ
ꢠ
ꢌ
ꢡ
ꢔ
ꢛ
ꢋ
ꢙ
ꢁ
ꢚ
ꢏ
ꢍ
ꢌ
ꢍ
ꢘ
ꢙ
ꢣ
ꢚ
ꢛ
ꢡ
ꢜ
ꢝ
ꢞ
ꢞ
ꢟ
ꢟ
ꢘ
ꢘ
ꢛ
ꢛ
ꢙ
ꢙ
ꢘ
ꢠ
ꢠ
ꢤ
ꢡ
ꢢ
ꢜ
ꢜ
ꢣ
ꢣ
ꢙ
ꢟ
ꢞ
ꢝ
ꢠ
ꢠ
ꢛ
ꢚ
ꢤ
ꢌꢣ
ꢢ
ꢥ
ꢠ
ꢦ
ꢘ
ꢡ
ꢞ
ꢠ
ꢟ
ꢘ
ꢟ
ꢛ
ꢜ
ꢙ
ꢢ
ꢧ
ꢞ
ꢙ
ꢟ
ꢟ
ꢣ
ꢠ
ꢨ
Copyright 2008, Texas Instruments Incorporated
ꢜ
ꢛ
ꢡ
ꢟ
ꢛ
ꢜ
ꢝ
ꢟ
ꢛ
ꢠ
ꢤ
ꢘ
ꢚ
ꢘ
ꢡ
ꢣ
ꢜ
ꢟ
ꢩ
ꢟ
ꢣ
ꢜ
ꢛ
ꢚ
ꢪ
ꢞ
ꢔ
ꢙ
ꢝ
ꢣ
ꢠ
ꢟ
ꢞ
ꢙ
ꢧ
ꢞ
ꢜ
ꢧ
ꢫ
ꢞ
ꢟ ꢣ ꢠ ꢟꢘ ꢙꢭ ꢛꢚ ꢞ ꢦꢦ ꢤꢞ ꢜ ꢞ ꢝ ꢣ ꢟ ꢣ ꢜ ꢠ ꢨ
ꢜ
ꢜ
ꢞ
ꢙ
ꢟ
ꢬ
ꢨ
ꢑ
ꢜ
ꢛ
ꢧ
ꢢ
ꢡ
ꢟ
ꢘ
ꢛ
ꢙ
ꢤ
ꢜ
ꢛ
ꢡ
ꢣ
ꢠ
ꢠ
ꢘ
ꢙ
ꢭ
ꢧ
ꢛ
ꢣ
ꢠ
ꢙ
ꢛ
ꢟ
ꢙ
ꢣ
ꢡ
ꢣ
ꢠ
ꢠ
ꢞ
ꢜ
ꢘ
ꢦ
ꢬ
ꢘ
ꢙ
ꢡ
ꢦ
ꢢ
ꢧ
ꢣ
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265