• SCR-Latchup-Resistant CMOS Process and Circuit
Design
• Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
• ±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
- Drives 50Ω Transmission Lines
Pinout
CD54AC273, CD54ACT273
(CDIP)
CD74AC273, CD74ACT273
(PDIP, SOIC)
TOP VIEW
MR
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
1
2
3
4
5
6
7
8
9
10
V
20
CC
Q7
19
D7
18
D6
17
Q6
16
Q5
15
D5
14
D4
13
12
Q4
11
CP
Octal D Flip-Flop with Reset
Description
The ’AC273 and ’ACT273 devices are octal D-type flip-flops
with reset that utilize advanced CMOS logic technology.
Information at the D input is transferred to the Q output on
the positive-going edge of the clock pulse. All eight flip-flops
are controlled by a common clock (CP) and a common reset
(
MR). Resetting is accomplished by a low voltage level
independent of the clock.
Ordering Information
PART
NUMBER
CD74AC273E0oC to 70oC
CD54AC273F3A-55oC to 125oC20 Ld CDIP
CD74ACT273E0oC to 70oC
CD54ACT273F3A-55oC to 125oC20 Ld CDIP
CD74AC273M0oC to 70oC
CD74ACT273M0oC to 70oC
NOTES:
1. When ordering, use the entirepartnumber. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Waferand die for this part number is available which meets all
electrical specifications. Please contact your local sales office for
ordering information.
TEMPERATURE
RANGEPACKAGE
20 Ld PDIP
-40oC to 85oC
-55oC to 125oC
20 Ld PDIP
-40oC to 85oC
-55oC to 125oC
20 Ld SOIC
-40oC to 85oC
-55oC to 125oC
20 Ld SOIC
-40oC to 85oC
-55oC to 125oC
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
H = High level (steady state), L = Low level (steady state), X = Irrelevant, ↑ = Transition from Low to High level, Q0 = The level of Q
before the indicated steady-state input conditions were established.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
3. For up to 4 outputs per device, add ±25mA for each additional output.
4. Unless otherwise specified, all voltages are referenced to ground.
5. The package thermal impedance is calculated in accordance with JESD 51.
AdditionalSupply Current per
Input Pin TTL Inputs High
I
CC
VCC or
GND
∆I
CC
V
CC
-2.1
05.5-8-80-160µA
-4.5 to
-2.4-2.8-3mA
5.5
1 Unit Load
NOTES:
6. Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize
power dissipation.
7. Test verifies a minimum 50Ω transmission-line-drive capability at 85
o
C, 75Ω at 125oC.
-40oC TO
85oC
-55oC TO
125oC
UNITSV
ACT Input Load Table
INPUTUNIT LOAD
Dn0.5
MR0.57
CP1
NOTE: Unit load is ∆ICClimit specified in DC Electrical Specifications
Table, e.g., 2.4mA max at 25oC.
4
CD54AC273, CD74AC273, CD54ACT273, CD74ACT273
Prerequisite For Switching Function
PARAMETERSYMBOLVCC (V)
AC TYPES
Data to CP Set-Up Timet
Hold Timet
Removal Time, MR to CPt
MR Pulse Widtht
CP Pulse Widtht
CP Frequencyf
ACT TYPES
Data to CP Set-Up Timet
Hold Timet
Removal Time MR to CPt
MR Pulse Widtht
CP Pulse Widtht
CP Frequencyf
SU
H
REM
W
W
MAX
SU
H
REM
W
W
MAX
-40oC TO 85oC-55oC TO 125oC
UNITSMINMAXMINMAX
1.52-2-ns
3.3
2-2-ns
(Note 9)
5
2-2-ns
(Note 10)
1.52-2-ns
3.32-2-ns
52-2-ns
1.52-2-ns
3.32-2-ns
52-2-ns
1.555-63-ns
3.36.1-7-ns
54.4-5-ns
1.555-63-ns
3.36.1-7-ns
54.4-5-ns
1.59-8-MHz
3.381-71-MHz
5114-100-MHz
5
2-2-ns
(Note 10)
52-2-ns
52-2-ns
54.4-5-ns
55.3-6-ns
597-85-MHz
Switching Specifications Input t
PARAMETERSYMBOL VCC (V)
AC TYPES
Propagation Delay,
CP to Qn
t
PLH
, tf = 3ns, CL= 50pF (Worst Case)
r
, t
PHL
1.5--154--169ns
3.3
4.9-17.24.7-18.9ns
(Note 9)
5
3.5-12.33.4-13.5ns
(Note 10)
5
-40oC TO 85oC-55oC TO 125oC
UNITSMINTYPMAXMINTYPMAX
CD54AC273, CD74AC273, CD54ACT273, CD74ACT273
Switching Specifications Input t
, tf = 3ns, CL= 50pF (Worst Case) (Continued)
r
-40oC TO 85oC-55oC TO 125oC
PARAMETERSYMBOL VCC (V)
Propagation Delay,
MR to Qn
t
PLH
, t
PHL
1.5--154--169ns
3.34.9-17.24.7-18.9ns
53.5-12.33.4-13.5ns
Input CapacitanceC
Power Dissipation CapacitanceC
I
PD
-- -10- -10pF
--45--45-pF
(Note 11)
ACT TYPES
Propagation Delay,
CP to Qn
Propagation Delay,
t
PLH
t
PLH
, t
PHL
5
3.5-12.33.4-13.5ns
(Note 10)
, t
PHL
53.5-12.33.4-13.5ns
MR to Qn
Input CapacitanceC
Power Dissipation CapacitanceC
I
PD
-- -10- -10pF
--45--45-pF
(Note 11)
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. CPD is used to determine the dynamic power consumption per flip-flop.
AC: PD = CPD V
ACT: PD=CPDV
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
14
6,50
6,50
5,905,90
2016
7,50
6,90
24
8,50
28
10,50
9,907,90
30
10,50
9,90
38
12,90
12,30
4040065 /E 12/01
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,65
1,20 MAX
14
0,30
0,19
8
4,50
4,30
PINS **
7
Seating Plane
0,15
0,05
8
1
A
DIM
14
0,10
6,60
6,20
M
0,10
0,15 NOM
0°–8°
2016
Gage Plane
24
0,25
0,75
0,50
28
A MAX
A MIN
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153