1
Data sheet acquired from Harris Semiconductor
SCHS241A
Features
Buffered Inputs
Typical Propagation Delay
- 6.4ns at VCC = 5V, TA = 25oC, CL = 50pF
Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
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 50 Transmission Lines
Description
The CD74AC174 and ’ACT174 are hex D 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 six flip-flops are controlled
by a common clock (CP) and a common reset (MR). Reset-
ting is accomplished by a low voltage level independent of
the clock.
Pinout
CD54ACT174
(CERDIP)
CD74AC174, CD74ACT174
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART
NUMBER TEMP.
RANGE (oC) PACKAGE
CD74AC174E -55 to 125 16 Ld PDIP
CD74AC174M -55 to 125 16 Ld SOIC
CD54ACT174F3A -55 to 125 16 Ld CERDIP
CD74ACT174E -55 to 125 16 Ld PDIP
CD74ACT174M -55 to 125 16 Ld SOIC
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all elec-
trical specifications. Please contact your local TI sales office or cus-
tomer service for ordering information.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
MR
Q0
D0
D1
Q1
D2
GND
Q2
VCC
D5
D4
Q4
D3
Q3
CP
Q5
September 1998 - Revised May 2000
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright © 2000, Texas Instruments Incorporated
CD74AC174,
CD54/74ACT174
Hex D Flip-Flop with Reset
[ /Title
(CD74
AC174
,
CD74
ACT17
4
)
/
Sub-
j
ect
(HexD
Flip-
Flop
with
Reset)
/
Autho
r ()
/
Key-
words
(Har-
ris
Semi-
con-
ductor,
Advan
ced
CMOS
,Harris
Semi-
con-
ductor,
Advan
ced
TTL)
/
Cre-
ator ()
/
DOCI
NFO
2
Functional Diagram
TRUTH TABLE (EACH FLIP-FLOP)
INPUTS OUTPUTS
RESET
(MR) CLOCK
CP DATA
Dn Qn
LXXL
HHH
HLL
HLXQ0
H = High Level (Steady State)
L = Low Level (Steady State)
X = Irrelevant
= Transition from Low to High level
Q0 = Level before the Indicated Steady-State Input conditions
were established.
CP
D
R
2
5
7
10
12
15
Q0
Q1
Q2
Q3
Q4
Q5
GND = 8
VCC = 16
14
1
13
11
6
4
3
9
D0
CP
D1
D2
D3
D4
D5
MR
CD74AC174, CD54/74ACT174
3
Absolute Maximum Ratings Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . . . . .±100mA
Operating Conditions
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range, VCC (Note 4)
AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Slew Rate, dt/dv
AC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . . 50ns (Max)
AC Types, 3.6V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . . 20ns (Max)
ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . 10ns (Max)
Thermal Resistance (Typical, Note 5) θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Maximum Junction Temperature (Plastic Package) . . . . . . . . . 1505oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
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. θJA is measured with the component mounted on an evaluation PC board in free air.
DC Electrical Specifications
PARAMETER SYMBOL
TEST
CONDITIONS VCC
(V)
25oC-40oC TO
85oC-55oC TO
125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
AC TYPES
High Level Input Voltage VIH - - 1.5 1.2 - 1.2 - 1.2 - V
3 2.1 - 2.1 - 2.1 - V
5.5 3.85 - 3.85 - 3.85 - V
Low Level Input Voltage VIL - - 1.5 - 0.3 - 0.3 - 0.3 V
3 - 0.9 - 0.9 - 0.9 V
5.5 - 1.65 - 1.65 - 1.65 V
High Level Output Voltage VOH VIH or VIL -0.05 1.5 1.4 - 1.4 - 1.4 - V
-0.05 3 2.9 - 2.9 - 2.9 - V
-0.05 4.5 4.4 - 4.4 - 4.4 - V
-4 3 2.58 - 2.48 - 2.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75
(Note 6, 7) 5.5 - - 3.85 - - - V
-50
(Note 6, 7) 5.5----3.85 - V
CD74AC174, CD54/74ACT174
4
Low Level Output Voltage VOL VIH or VIL 0.05 1.5 - 0.1 - 0.1 - 0.1 V
0.05 3 - 0.1 - 0.1 - 0.1 V
0.05 4.5 - 0.1 - 0.1 - 0.1 V
12 3 - 0.36 - 0.44 - 0.5 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75
(Note 6, 7) 5.5 - - - 1.65 - - V
50
(Note 6, 7) 5.5-----1.65 V
Input Leakage Current IIVCC or
GND - 5.5 - ±0.1 - ±1-±1µA
Quiescent Supply Current
MSI ICC VCC or
GND 0 5.5 - 8 - 80 - 160 µA
ACT TYPES
High Level Input Voltage VIH - - 4.5 to
5.5 2-2-2-V
Low Level Input Voltage VIL - - 4.5 to
5.5 - 0.8 - 0.8 - 0.8 V
High Level Output Voltage VOH VIH or VIL -0.05 4.5 4.4 - 4.4 - 4.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75
(Note 6, 7) 5.5 - - 3.85 - - - V
-50
(Note 6, 7) 5.5----3.85 - V
Low Level Output Voltage VOL VIH or VIL 0.05 4.5 - 0.1 - 0.1 - 0.1 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75
(Note 6, 7) 5.5 - - - 1.65 - - V
50
(Note 6, 7) 5.5-----1.65 V
Input Leakage Current IIVCC or
GND - 5.5 - ±0.1 - ±1-±1µA
Quiescent Supply Current
MSI ICC VCC or
GND 0 5.5 - 8 - 80 - 160 µA
AdditionalSupplyCurrentper
Input Pin TTL Inputs High
1 Unit Load
ICC VCC
-2.1 - 4.5 to
5.5 - 2.4 - 2.8 - 3 mA
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 50 transmission-line-drive capability at 85oC, 75 at 125oC.
ACT Input Load Table
INPUT UNIT LOAD
Dn, MR 0.5
CP 0.83
NOTE: Unit load is ICC limit specified in DC Electrical Specifications
Table, e.g., 2.4mA max at 25oC.
DC Electrical Specifications (Continued)
PARAMETER SYMBOL
TEST
CONDITIONS VCC
(V)
25oC-40oC TO
85oC-55oC TO
125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
CD74AC174, CD54/74ACT174
5
Prerequisite For Switching Function
PARAMETER SYMBOL VCC (V)
-40oC TO 85oC -55oC TO 125oC
UNITSMIN MAX MIN MAX
AC TYPES
Data to CP Set-Up Time tSU 1.5 2 - 2 - ns
3.3
(Note 9) 2-2-ns
5
(Note 10) 2-2-ns
Hold Time tH1.5 33 - 38 - ns
3.3 3.7 - 4.2 - ns
5 2.6 - 3 - ns
Removal Time, MR to CP tREM 1.5 1.5 - 1.5 - ns
3.3 1.5 - 1.5 - ns
5 1.5 - 1.5 - ns
MR Pulse Width tW1.5 44 - 50 - ns
3.3 4.9 - 5.6 - ns
5 3.5 - 4 - ns
CP Pulse Width tW1.5 57 - 65 - ns
3.3 6.4 - 7.3 - ns
5 4.6 - 5.2 - ns
CP Frequency fMAX 1.5 9 - 8 - MHz
3.3 77 - 68 - MHz
5 108 - 95 - MHz
ACT TYPES
Data to CP Set-Up Time tSU 5
(Note 10) 2-2-ns
Hold Time tH5 2.2 - 2.5 - ns
Removal Time, MR to CP tREM 5 1.5 - 1.5 - ns
MR Pulse Width tW5 3.5 - 4 - ns
Clock Pulse Width tW5 5.4 - 6.2 - ns
CP Frequency fMAX 5 91 - 80 - MHz
Switching Specifications Input tr, tf = 3ns, CL= 50pF (Worst Case)
PARAMETER SYMBOL VCC (V)
-40oC TO 85oC -55oC TO 125oC
UNITSMIN TYP MAX MIN TYP MAX
AC TYPES
Propagation Delay, CP to Qn tPLH, tPHL 1.5 - - 154 - - 169 ns
3.3
(Note 9) 4.9 - 17.2 4.7 - 18.9 ns
5
(Note 10) 3.5 - 12.3 3.4 - 13.5 ns
CD74AC174, CD54/74ACT174
6
Propagation Delay, MR to Qn tPLH, tPHL 1.5 - - 165 - - 181 ns
3.3 5.2 - 18.5 5.1 - 20.3 ns
5 3.7 - 13.2 3.6 - 14.5 ns
Input Capacitance CI- - -10- -10pF
Power Dissipation Capacitance CPD
(Note 11) - - 37 - - 37 - pF
ACT TYPES
Propagation Delay, CP to Qn tPLH, tPHL 5
(Note 10) 3.6 - 12.6 3.5 - 14 ns
Propagation Delay, MR to Qn tPLH, tPHL 5 4 - 14.1 3.9 - 15.5 ns
Input Capacitance CI- - -10- -10pF
Power Dissipation Capacitance CPD
(Note 11) - - 37 - - 37 - pF
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.
PD=C
PD VCC2fi+Σ(CL+V
CC2f
o)+V
CC ICC where fi= input frequency, fo= output frequency, CL= output load capacitance, VCC =
supply voltage.
Switching Specifications Input tr, tf = 3ns, CL= 50pF (Worst Case) (Continued)
PARAMETER SYMBOL VCC (V)
-40oC TO 85oC -55oC TO 125oC
UNITSMIN TYP MAX MIN TYP MAX
FIGURE 1. PROPAGATION DELAYS
FIGURE 2. RESET OR SET PREREQUISITE AND
PROPAGATION DELAYS
INPUT LEVEL CP
GND VStW
tPHL tPLH
VSVS
VS
VS
INPUT LEVEL
GND
INPUT CP
MR
VS
tWtREM
tPHL
Q(Q)
VS
VS
VS
FIGURE 3.
INPUT LEVEL
GND
D
CP
VS
tSU(L) tH(L) tH(H)
tSU(H)
VSVSVS
VS
VS
INPUT LEVEL
GND
DUT
OUTPUT
RL (NOTE)
OUTPUT
LOAD
500
CL
50pF
NOTE: For AC Series Only: When VCC = 1.5V, RL = 1kΩ.
FIGURE 4. PROPAGATION DELAY TIMES
AC ACT
Input Level VCC 3V
Input Switching Voltage, VS0.5 VCC 1.5V
Output Switching Voltage, VS0.5 VCC 0.5 VCC
CD74AC174, CD54/74ACT174
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Copyright 2000, Texas Instruments Incorporated