CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 APRIL 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Inputs Are TTL-Voltage Compatible
D
Contain Six Flip-Flops With Single-Rail
Outputs
D
Buffered Inputs
D
Speed of Bipolar F, AS, and S, With
Significantly Reduced Power Consumption
D
Balanced Propagation Delays
D
24-mA Output Drive Current
Fanout to 15 F Devices
D
SCR-Latchup-Resistant CMOS Process and
Circuit Design
D
Exceeds 2-kV ESD Protection Per
MIL-STD-883, Method 3015
D
Applications Include:
Buffer/Storage Registers
Shift Registers
description/ordering information
The 'ACT174 devices are positive-edge-triggered D-type flip-flops with a direct clear (CLR) input and are
designed for 4.5-V to 5.5-V V
CC
operation.
Information at the data (D) inputs that meets the setup time requirements is transferred to the outputs on the
positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a particular voltage level and is not
directly related to the transition time of the positive-going edge of CLK. When CLK is at either the high or low
level, the D input has no effect at the output.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP E
Tube
CD74ACT174E
CD74ACT174E
55
C to 125
C
SOIC
M
Tube
CD74ACT174M
ACT174M
55
C to 125
C
SOIC M
Tape and reel
CD74ACT174M96
ACT174M
CDIP F
Tube
CD54ACT174F3A
CD54ACT174F3A
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUT
CLR
CLK
D
Q
L
X
X
L
H
H
H
H
L
L
H
L
X
Q0
CD54ACT174 . . . F PACKAGE
CD74ACT174 . . . E OR M PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CLR
1Q
1D
2D
2Q
3D
3Q
GND
V
CC
6Q
6D
5D
5Q
4D
4Q
CLK
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2003, Texas Instruments Incorporated
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.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 APRIL 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
1D
C1
R
To Five Other Channels
1
9
3
2
CLR
CLK
1D
1Q
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
0.5 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0 V or V
I
> V
CC
)
(see Note 1)
20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 V or V
O
> V
CC
)
(see Note 1)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
> 0 V or V
O
< V
CC
)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CC
or GND
150 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 2): E package
67
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M package
73
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
TA = 25
C
55
C to
125
C
40
C to
85
C
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
VCC
Supply voltage
4.5
5.5
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
2
2
V
VIL
Low-level input voltage
0.8
0.8
0.8
V
VI
Input voltage
0
VCC
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
0
VCC
V
IOH
High-level output current
24
24
24
mA
IOL
Low-level output current
24
24
24
mA
t/
v
Input transition rise or fall rate
10
10
10
ns/V
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 APRIL 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
C
55
C to
125
C
40
C to
85
C
UNIT
CC
MIN
MAX
MIN
MAX
MIN
MAX
IOH = 50
A
4.5 V
4.4
4.4
4.4
VOH
VI = VIH or VIL
IOH = 24 mA
4.5 V
3.94
3.7
3.8
V
VOH
VI = VIH or VIL
IOH = 50 mA
5.5 V
3.85
V
IOH = 75 mA
5.5 V
3.85
IOL = 50
A
4.5 V
0.1
0.1
0.1
VOL
VI = VIH or VIL
IOL = 24 mA
4.5 V
0.36
0.5
0.44
V
VOL
VI = VIH or VIL
IOL = 50 mA
5.5 V
1.65
V
IOL = 75 mA
5.5 V
1.65
II
VI = VCC or GND
5.5 V
0.1
1
1
A
ICC
VI = VCC or GND,
IO = 0
5.5 V
8
160
80
A
D
ICC
VI = VCC 2.1 V
4.5 V to 5.5 V
2.4
3
2.8
mA
Ci
10
10
10
pF
Test one output at a time, not exceeding 1-second duration. Measurement is made by forcing indicated current and measuring voltage to minimize
power dissipation. Test verifies a minimum 50-
transmission-line drive capability at 85
C and 75-
transmission-line drive capability at 125
C.
Additional quiescent supply current per input pin, TTL inputs high, 1 unit load
ACT INPUT LOAD TABLE
INPUT
UNIT LOAD
Data
0.5
CLR
0.5
CLK
0.83
Unit Load is
ICC limit specified in
electrical characteristics table
(e.g., 2.4 mA at 25
C).
timing requirements over recommended operating free-air temperature range, V
CC
= 5 V
0.5 V
(unless otherwise noted)
55
C to
125
C
40
C to
85
C
UNIT
MIN
MAX
MIN
MAX
fclock
Clock frequency
80
91
MHz
t
Pulse duration
CLR low
4
3.5
ns
tw
Pulse duration
CLK high or low
6.2
5.4
ns
tsu
Setup time before CLK
Data
2
2
ns
th
Hold time, data after CLK
2.5
2.2
ns
trec
Recovery time, before CLK
CLR
1.5
1.5
ns
CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 APRIL 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
0.5 V, C
L
= 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
55
C to
125
C
40
C to
85
C
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
fmax
80
91
MHz
tPLH
CLK
Any Q
3.5
14
3.6
12.6
ns
tPHL
CLK
Any Q
3.5
14
3.6
12.6
ns
tPLH
CLR
Any Q
3.9
15.5
4
14.1
ns
tPHL
CLR
Any Q
3.9
15.5
4
14.1
ns
operating characteristics, V
CC
= 5 V, T
A
= 25
C
PARAMETER
TYP
UNIT
Cpd
Power dissipation capacitance
37
pF
CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 APRIL 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORMS
SETUP AND HOLD AND INPUT RISE AND FALL TIMES
th
tsu
10%
10%
90%
90%
3 V
3 V
0 V
0 V
tr
tf
Reference
Input
Data
Input
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
50% VCC
50%
10%
10%
90%
90%
3 V
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
tPLH
tPHL
50% VCC
50%
10%
10%
90%
90%
VOH
VOL
tr
tf
tPHL
tPLH
Out-of-Phase
Output
NOTES: A. CL includes probe and test-fixture capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR
1 MHz, ZO = 50
, tr = 3 ns, tf = 3 ns.
Phase relationships between waveforms are arbitrary.
D. For clock inputs, fmax is measured with the input duty cycle at 50%.
E. The outputs are measured one at a time with one input transition per measurement.
F. tPLH and tPHL are the same as tpd.
G. tPZL and tPZH are the same as ten.
H. tPLZ and tPHZ are the same as tdis.
I. All parameters and waveforms are not applicable to all devices.
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
2
VCC
R1 = 500
Open
GND
0 V
tw
VOLTAGE WAVEFORMS
PULSE DURATION
Input
3 V
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2
VCC
GND
TEST
S1
Output
Control
Output
Waveform 1
S1 at 2
VCC
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
VCC
0 V
20% VCC
20% VCC
80% VCC
0 V
VOLTAGE WAVEFORMS
OUTPUT ENABLE AND DISABLE TIMES
80% VCC
3 V
R2 = 500
VOLTAGE WAVEFORMS
RECOVERY TIME
3 V
0 V
CLR
Input
CLK
3 V
trec
0 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
Figure 1. Load Circuit and Voltage Waveforms
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