74LVX74
LOW VOLTAGE CMOS DUAL D-TYPE FLIP FLOP
WITH PRESET AND CLEAR (5V TOLERANT INPUTS)
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HIGH SPEED :
fMAX = 145MHz (TYP.) at VCC = 3.3V
5V TOLERANT INPUTS
INPUT VOLTAGE LEVEL :
VIL=0.8V, VIH=2V AT VCC=3V
LOW POWER DISSIPATION:
ICC = 2 µA (MAX.) at TA=25°C
LOW NOISE:
VOLP = 0.3V (TYP.) at VCC = 3.3V
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 74
IMPROVED LATCH-UP IMMUNITY
POWER DOWN PROTECTION ON INPUTS
DESCRIPTION
The 74LVX74 is a low voltage CMOS DUAL
D-TYPE FLIP-FLOP WITH PRESET AND CLEAR
NON INVERTING fabricated with sub-micron
silicon gate and double-layer metal wiring C2MOS
technology. It is ideal for low power, battery
operated and low noise 3.3V applications.
SOP
TSSOP
ORDER CODES
PACKAGE
TUBE
T&R
SOP
TSSOP
74LVX74M
74LVX74MTR
74LVX74TTR
A signal on the D INPUT is transferred to the Q
OUTPUT during the positive going transition of the
clock pulse. CLR and PR are independent of the
clock and accomplished by a low setting on the
appropriate input.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V
system. It combines high speed performance with
the true CMOS low power consumption. All inputs
and outputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/11
74LVX74
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
1, 13
1CLR, 2CLR
2, 12
3, 11
1D, 2D
1CK, 2CK
4, 10
1PR, 2PR
5, 9
6, 8
1Q, 2Q
1Q, 2Q
7
14
GND
VCC
NAME AND FUNCTION
Asynchronous Reset Direct Input
Data Inputs
Clock Input
(LOW to HIGH, Edge
Triggered)
Asynchronous Set - Direct
Input
True Flip-Flop Outputs
Complement Flip-Flop
Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
CLR
PR
D
CK
Q
Q
L
H
L
H
L
L
X
X
X
X
X
X
L
H
H
H
L
H
H
H
L
L
H
H
H
H
H
L
H
H
X
Qn
Qn
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
2/11
CLEAR
PRESET
NO CHANGE
74LVX74
ABSOLUTE MAXIMUM RATINGS
Symbol
V CC
Parameter
Value
Unit
Supply Voltage
-0.5 to +7.0
V
VI
DC Input Voltage
-0.5 to +7.0
V
VO
DC Output Voltage
-0.5 to VCC + 0.5
V
IIK
DC Input Diode Current
- 20
mA
IOK
DC Output Diode Current
± 20
mA
IO
DC Output Current
ICC or IGND DC VCC or Ground Current
Tstg
Storage Temperature
TL
Lead Temperature (10 sec)
± 25
mA
± 50
mA
-65 to +150
°C
300
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
V CC
Parameter
Value
Unit
Supply Voltage (note 1)
2 to 3.6
V
VI
Input Voltage
0 to 5.5
V
VO
Output Voltage
Top
Operating Temperature
dt/dv
Input Rise and Fall Time (note 2) (VCC = 3.3V)
0 to VCC
V
-55 to 125
°C
0 to 100
ns/V
1) Truth Table guaranteed: 1.2V to 3.6V
2) VIN from 0.8V to 2.0V
DC SPECIFICATIONS
Test Condition
Symbol
VIH
V IL
VOH
VOL
II
ICC
Parameter
Value
TA = 25°C
VCC
(V)
Min.
Typ.
Max.
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
High Level Input
Voltage
2.0
3.0
1.5
2.0
1.5
2.0
1.5
2.0
2.4
2.4
2.4
Low Level Input
Voltage
3.6
2.0
3.0
3.6
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Quiescent Supply
Current
0.5
0.8
0.8
0.5
0.8
0.8
IO=-50 µA
1.9
2.0
1.9
1.9
3.0
IO=-50 µA
2.9
3.0
2.9
2.9
3.0
IO=-4 mA
2.58
2.0
IO=50 µA
0.0
0.0
2.48
0.1
Max.
V
0.5
0.8
0.8
2.0
Unit
V
V
2.4
0.1
0.1
3.0
IO=50 µA
0.1
0.1
0.1
3.0
IO=4 mA
0.36
0.44
0.55
3.6
VI = 5V or GND
± 0.1
±1
±1
µA
3.6
VI = VCC or GND
2
20
20
µA
V
3/11
74LVX74
DYNAMIC SWITCHING CHARACTERISTICS
Test Condition
Symbol
VOLP
V OLV
V IHD
VILD
Parameter
Dynamic Low
Voltage Quiet
Output (note 1, 2)
Dynamic High
Voltage Input (note
1, 3)
Dynamic Low
Voltage Input (note
1, 3)
Value
TA = 25°C
VCC
(V)
Min.
3.3
-0.5
3.3
Typ.
Max.
0.3
0.5
-55 to 125°C
Min.
Min.
Max.
Unit
Max.
-0.3
2
C L = 50 pF
3.3
-40 to 85°C
V
0.8
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
4/11
74LVX74
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns)
Test Condition
Symbol
Parameter
tPLH tPHL Propagation Delay
Time CK to
Q or Q
tPLH tPHL Propagation Delay
Time
PR or CLR to
Q or Q
tw
tw(L)
ts
th
tREM
fMAX
tOSLH
tOSHL
Minimum Pulse
Width HIGH or
LOW, CK
Minimum Pulse
Width LOW
PR or CLR
Minimum Setup
Time D to CK
HIGH or LOW
Minimum Hold
Time D to CK
HIGH or LOW
Minimum Removal
Time PR or CLR to
CK
Maximum Clock
Frequency
Output To Output
Skew Time (note1,
2)
VCC
(V)
CL
(pF)
2.7
2.7
Value
TA = 25°C
-55 to 125°C
Typ.
Max.
Min.
Max.
Min.
Max.
15
50
7.3
9.8
15.0
18.5
1.0
1.0
18.5
22.0
1.0
1.0
18.5
22.0
3.3 (*)
15
5.7
9.7
1.0
11.5
1.0
11.5
3.3 (*)
2.7
2.7
50
8.2
13.2
1.0
15.0
1.0
15.0
15
50
8.4
10.9
15.6
19.1
1.0
1.0
18.5
22.0
1.0
1.0
18.5
22.0
3.3 (*)
15
6.6
10.1
1.0
12.0
1.0
12.0
3.3 (*)
2.7
50
9.1
13.6
1.0
15.5
1.0
15.5
3.3
50
(*)
50
2.7
3.3
Min.
-40 to 85°C
50
(*)
50
2.7
50
3.3 (*)
50
2.7
50
3.3 (*)
50
ns
10.0
7.0
10.0
7.0
ns
8.5
6.0
10.0
7.0
10.0
7.0
ns
8.0
5.5
9.5
6.5
9.5
6.5
ns
0.5
0.5
0.5
0.5
0.5
0.5
ns
6.5
5.0
7.5
5.0
7.5
5.0
ns
2.7
50
50
2.7
2.7
15
50
55
45
135
60
50
40
50
40
3.3 (*)
15
95
145
80
80
3.3 (*)
2.7
50
60
85
50
50
3.3 (*)
50
0.5
0.5
ns
8.5
6.0
3.3 (*)
50
Unit
1.0
1.0
1.5
1.5
MHz
1.5
1.5
ns
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ± 0.3V
CAPACITIVE CHARACTERISTICS
Test Condition
Symbol
Parameter
TA = 25°C
VCC
(V)
CIN
Input Capacitance
3.3
C PD
Power Dissipation
Capacitance
(note 1)
3.3
Value
Min.
fIN = 10 MHz
Typ.
Max.
4
10
25
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
10
Unit
Max.
10
pF
pF
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/2 (per circuit)
5/11
74LVX74
TEST CIRCUIT
C L =15/50pF or equivalent (includes jig and probe capacitance)
R T = ZOUT of pulse generator (typically 50Ω)
WAVEFORM 1 : PROPAGATION DELAYS, SETUP AND HOLD TIMES (f=1MHz; 50% duty cycle)
6/11
74LVX74
WAVEFORM 2 : PROPAGATION DELAYS, MINIMUM PULSE WIDTH (f=1MHz; 50% duty cycle)
WAVEFORM 3 : RECOVERY TIME (f=1MHz; 50% duty cycle)
7/11
74LVX74
WAVEFORM 4 : MINIMUM PULSE WIDTH
8/11
74LVX74
SO-14 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.068
0.2
a2
MAX.
0.003
0.007
1.65
0.064
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45° (typ.)
D
8.55
8.75
0.336
0.344
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
7.62
0.300
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
S
0.68
0.026
8° (max.)
PO13G
9/11
74LVX74
TSSOP14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
MAX.
1.2
A1
0.05
A2
0.8
b
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
4.9
5
5.1
0.193
0.197
0.201
E
6.2
6.4
6.6
0.244
0.252
0.260
E1
4.3
4.4
4.48
0.169
0.173
0.176
1
e
0.65 BSC
K
0°
L
0.45
A
0.60
0.0256 BSC
8°
0°
0.75
0.018
8°
0.024
0.030
A2
A1
b
e
K
c
L
E
D
E1
PIN 1 IDENTIFICATION
1
0080337D
10/11
74LVX74
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consequences of use of such information nor for any infringe ment of patents or other righ ts of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this pub lication are subject to change without notice. Thi s pub lication supersedes and replaces all information
previously supplied. STMicroelectronics prod ucts are not authori zed for use as critical components in life suppo rt devices or
systems without express written approval of STMicroelectronics.
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11/11
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.
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