• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
= 0.8V (Max), VIH = 2V (Min)
IL
- CMOS Input Compatibility, I
= 30%, NIH = 30% of V
IL
≤ 1µA at VOL, V
l
C to 125oC
OH
Pinout
CD54HC173, CD54HCT173
(CERDIP)
CD74HC173
(PDIP, SOIC, SOP, TSSOP)
CD74HCT173
(PDIP, SOIC)
TOP VIEW
V
OE
OE2
Q
Q
Q
Q
CP
GND
1
2
3
0
4
1
5
2
6
3
7
8
16
CC
MR
15
14
D0
13
D1
12
D2
D3
11
E2
10
9
E1
Description
The ’HC173 and ’HCT173 high speed three-state quad Dtype flip-flops are fabricated with silicon gate CMOS technology. They possess the low power consumption of standard
CMOS Integrated circuits, and can operate at speeds comparable to the equivalent low power Schottky devices. The
buffered outputs can drive 15 LSTTL loads. The large output
drive capability and three-state feature make these parts ideally suited for interfacing with bus lines in bus oriented systems.
The four D-type flip-flops operate synchronously from a common clock. The outputs are in the three-state mode when
either of the two output disable pins are at the logic “1” level.
The input ENABLES allow the flip-flops to remain in their
CC
present states without having to disrupt the clock If either of
the 2 input ENABLES are taken to a logic “1” level, the Q
outputs are fed back to the inputs, forcing the flip-flops to
remain in the same state. Reset is enabled by taking the
MASTER RESET (MR) input to a logic “1” level. The data
outputs change state on the positive going edge of the clock.
The ’HCT173 logic family is functionally, as well as pin compatible with the standard LS logic family
.
Ordering Information
TEMP. RANGE
PART NUMBER
CD54HC173F3A-55 to 12516 Ld CERDIP
CD54HCT173F3A-55 to 12516 Ld CERDIP
CD74HC173E-55 to 12516 Ld PDIP
CD74HC173M-55 to 12516 Ld SOIC
CD74HC173MT-55 to 12516 Ld SOIC
CD74HC173M96-55 to 12516 Ld SOIC
CD74HC173NSR-55 to 12516 Ld SOP
CD74HC173PW-55 to 12516 Ld TSSOP
CD74HC173PWR-55 to 12516 Ld TSSOP
CD74HC173PWT-55 to 12516 Ld TSSOP
(oC)PACKAGE
CD74HCT173E-55 to 12516 Ld PDIP
CD74HCT173M-55 to 12516 Ld SOIC
CD74HCT173MT-55 to 12516 Ld SOIC
CD74HCT173M96-55 to 12516 Ld SOIC
NOTE: When ordering, use the entire part number. The suffixes 96
and R denote tape and reel. The suffix T denotes a small-quantity
reel of 250.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
H= High Voltage Level
L = Low Voltage Level
X= Irrelevant
↑= Transition from Low to High Level
Q0= Level Before the Indicated Steady-State Input Conditions Were
Established
NOTE:
1. When either OE1or OE2(or both) is(are) high,the output isdisabled to the high-impedance state, however, sequential operation of the flip-flops is not affected.
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.
NOTE:
2. The package thermal impedance is calculated in accordance with JESD 51-7.
Maximum Clock Frequencyf
MR Pulse Widtht
Clock Pulse Widtht
Set-up Time, E to Clockt
Set-up Time, Data to Clockt
Hold Time, Data to Clockt
Hold Time, E to Clockt
Removal Time, MR to Clockt
H
REM
MAX
w
w
SU
SU
H
H
REM
20-0-0-ns
4.50-0-0-ns
60-0-0-ns
260-75-90-ns
4.512-15-18-ns
610-13-15-ns
4.520-16-13-MHz
4.515-19-22-ns
4.525-31-38-ns
4.512-15-18-ns
4.518-23-27-ns
4.50-0-0-ns
4.50-0-0-ns
4.512-15-18-ns
7
I
CD54HC173, CD74HC173, CD54HCT173, CD74HCT173
Test Circuits and Waveforms
trC
L
CLOCK
10%
90%
50%
10%
tfC
t
L
WL
tWL+ tWH=
50%
t
WH
f
CL
50%
+ tWH=
t
I
V
CC
GND
trCL= 6ns
CLOCK
0.3V
2.7V
1.3V
0.3V
t
t
fCL
WL
= 6ns
1.3V
WL
fC
L
3V
1.3V
GND
t
WH
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table.For f
, input duty cycle = 50%.
MAX
FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
tr = 6nstf = 6ns
V
t
CC
GND
TLH
INPUT
t
90%
50%
10%
THL
90%
t
50%
10%
PLH
INVERTING
OUTPUT
t
PHL
FIGURE 3. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
tfC
L
V
CC
50%
GND
t
H(L)
V
CC
50%
t
SU(L)
GND
CLOCK
INPUT
DAT A
INPUT
t
SU(H)
trC
L
90%
10%
t
H(H)
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table.For f
, input duty cycle = 50%.
MAX
FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
= 6ns
tr = 6ns
INPUT
t
2.7V
1.3V
0.3V
THL
t
f
3V
GND
t
TLH
90%
t
PLH
1.3V
10%
INVERTING
OUTPUT
t
PHL
FIGURE 4. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
CLOCK
INPUT
DAT A
INPUT
t
SU(H)
trC
L
2.7V
0.3V
t
H(H)
1.3V
1.3V
tfC
L
3V
1.3V
GND
t
H(L)
3V
1.3V
t
SU(L)
GND
OUTPUT
t
REM
V
CC
SET, RESET
OR PRESET
50%
90%
t
PLH
IC
t
TLH
t
THL
90%
50%
10%
t
PHL
GND
C
L
50pF
FIGURE 5. HC SETUP TIMES, HOLD TIMES, REMOVAL TIME,
AND PROPAGATION DELAY TIMES FOR EDGE
TRIGGERED SEQUENTIAL LOGIC CIRCUITS
OUTPUT
t
REM
3V
SET, RESET
1.3V
90%
1.3V
t
t
PLH
TLH
90%
1.3V
10%
t
t
PHL
THL
OR PRESET
IC
C
L
50pF
FIGURE 6. HCT SETUP TIMES, HOLD TIMES, REMOVALTIME,
AND PROPAGATION DELAY TIMES FOR EDGE
TRIGGERED SEQUENTIAL LOGIC CIRCUITS
8
GND
D
O
D
O
T
H
CD54HC173, CD74HC173, CD54HCT173, CD74HCT173
Test Circuits and Waveforms (Continued)
6ns6ns
OUTPUT
DISABLE
OUTPUT LOW
TO OFF
UTPUT HIGH
TO OFF
50%
t
t
OUTPUTS
ENABLED
PLZ
PHZ
10%
90%
90%
10%
t
PZL
t
PZH
OUTPUTS
DISABLED
FIGURE 7. HC THREE-STATE PROPAGATION DELAY
WAVEFORM
OTHER
INPUTS
IED HIGH
OR LOW
OUTPUT
DISABLE
NOTE: Open drain waveforms t
PLZ
and t
are the same as those for three-state shown on the left. The test circuit is Output RL=1kΩ to
PZL
VCC, CL = 50pF.
FIGURE 9. HC AND HCT THREE-STATE PROPAGATION DELAY TEST CIRCUIT
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.
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(RoHS)
(2)
Lead/Ball Finish MSL Peak Temp
CU NIPDAULevel-NC-NC-NC
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-1-250C-UNLIM
CU NIPDAULevel-1-250C-UNLIM
CU NIPDAULevel-1-250C-UNLIM
CU NIPDAULevel-NC-NC-NC
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
CU NIPDAULevel-2-260C-1 YEAR/
Level-1-235C-UNLIM
(3)
(2)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
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.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry 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
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
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.
28-Feb-2005
Addendum-Page 2
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
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
7,70
9,80
9,60
4040064/F 01/97
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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