74VHCT02A
QUAD 2-INPUT NOR GATE
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HIGH SPEED: tPD = 5ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION:
ICC = 2 µA (MAX.) at TA=25°C
COMPATIBLE WITH TTL OUTPUTS:
VIH = 2V (MIN.), VIL = 0.8V (MAX)
POWER DOWN PROTECTION ON INPUTS
& OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
OPERATING VOLTAGE RANGE:
VCC(OPR) = 4.5V to 5.5V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 02
IMPROVED LATCH-UP IMMUNITY
LOW NOISE: VOLP = 0.8V (MAX.)
DESCRIPTION
The 74VHCT02A is an advanced high-speed
CMOS QUAD 2-INPUT NOR GATE fabricated
with sub-micron silicon gate and double-layer
metal wiring C2MOS technology.
The internal circuit is composed of 3 stages
including buffer output, which provides high noise
immunity and stable output.
SOP
TSSOP
Table 1: Order Codes
PACKAGE
T&R
SOP
TSSOP
74VHCT02AMTR
74VHCT02ATTR
Power down protection is provided on all inputs
and outputs 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 since all
inputs are equipped with TTL threshold.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Figure 1: Pin Connection And IEC Logic Symbols
December 2004
Rev. 4
1/11
74VHCT02A
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
PIN N°
SYMBOL
2, 5, 8, 11
3, 6, 9, 12
1, 4, 10, 13
7
1A to 4A
1B to 4B
1Y to 4Y
GND
VCC
14
NAME AND FUNCTION
Data Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
Table 3: Truth Table
A
B
Y
L
L
H
H
L
H
L
H
H
L
L
L
Table 4: Absolute Maximum Ratings
Symbol
VCC
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 (see note 1)
-0.5 to +7.0
V
VO
DC Output Voltage (see note 2)
-0.5 to VCC + 0.5
- 20
V
mA
± 20
mA
IIK
DC Input Diode Current
IOK
DC Output Diode Current
IO
DC Output Current
ICC or IGND DC VCC or Ground Current
Storage Temperature
Tstg
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
1) VCC = 0V
2) High or Low State
Table 5: Recommended Operating Conditions
Symbol
VCC
Parameter
Supply Voltage
Unit
4.5 to 5.5
V
VI
Input Voltage
0 to 5.5
V
VO
Output Voltage (see note 1)
0 to 5.5
V
VO
Output Voltage (see note 2)
Top
Operating Temperature
dt/dv
Input Rise and Fall Time (see note 3) (VCC = 5.0 ± 0.5V)
1) VCC = 0V
2) High or Low State
3) VIN from 0.8V to 2V
2/11
Value
0 to VCC
V
-55 to 125
°C
0 to 20
ns/V
74VHCT02A
Table 6: DC Specifications
Test Condition
Symbol
VIH
VIL
VOH
VOL
II
ICC
+ICC
IOPD
Parameter
TA = 25°C
VCC
(V)
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
4.5 to
5.5
4.5 to
5.5
Value
Min.
Typ.
Max.
2
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
2
0.8
Max.
2
0.8
Unit
V
0.8
V
4.5
IO=-50 µA
4.4
4.5
IO=-8 mA
3.94
Low Level Output
Voltage
4.5
IO=50 µA
0.1
0.1
0.1
4.5
IO=8 mA
0.36
0.44
0.55
Input Leakage
Current
Quiescent Supply
Current
Additional Worst
Case Supply
Current
0 to
5.5
VI = 5.5V or GND
± 0.1
± 1.0
± 1.0
µA
5.5
VI = VCC or GND
2
20
20
µA
5.5
One Input at 3.4V,
other input at VCC
or GND
1.35
1.5
1.5
mA
0
VOUT = 5.5V
0.5
5.0
5.0
µA
Output Leakage
Current
4.5
0.0
4.4
4.4
3.8
3.7
V
V
Table 7: AC Electrical Characteristics (Input tr = tf = 3ns)
Test Condition
Symbol
Parameter
tPLH
tPHL
Propagation Delay
Time
VCC (*) CL
(V)
(pF)
5.0
5.0
Value
TA = 25°C
Min.
15
50
-40 to 85°C
-55 to 125°C
Typ.
Max.
Min.
Max.
Min.
Max.
5.0
5.5
7.0
8.0
1.0
1.0
8.0
9.0
1.0
1.0
8.0
9.0
Unit
ns
(*) Voltage range is 5.0V ± 0.5V
Table 8: Capacitive Characteristics
Test Condition
Symbol
Value
TA = 25°C
Parameter
Min.
Typ.
Max.
10
CIN
Input Capacitance
4
CPD
Power Dissipation
Capacitance
(note 1)
17
-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/4 (per gate)
3/11
74VHCT02A
Table 9: Dynamic Switching Characteristics
Test Condition
Symbol
VOLP
VOLV
VIHD
VILD
Parameter
Dynamic Low
Voltage Quiet
Output (note 1, 2)
Dynamic High
Voltage Input
(note 1, 3)
Dynamic Low
Voltage Input
(note 1, 3)
TA = 25°C
VCC
(V)
Min.
5.0
5.0
Value
-0.8
CL = 50 pF
5.0
Typ.
Max.
0.3
0.8
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
Unit
Max.
-0.3
V
2
0.8
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.0V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.0V. Inputs under test switching: 3.0V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
Figure 3: Test Circuit
CL =15/ 50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
4/11
74VHCT02A
Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle)
5/11
74VHCT02A
SO-14 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
inch
MAX.
MIN.
TYP.
MAX.
A
1.35
1.75
0.053
0.069
A1
0.1
0.25
0.004
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
8.55
8.75
0.337
0.344
E
3.8
4.0
0.150
0.157
e
1.27
0.050
H
5.8
6.2
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.4
1.27
0.016
0.050
k
0°
8°
0°
8°
ddd
0.100
0.004
0016019D
6/11
74VHCT02A
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
7/11
74VHCT02A
Tape & Reel SO-14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
MAX.
MIN.
330
13.2
TYP.
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
8/11
TYP
0.504
22.4
0.519
0.882
Ao
6.4
6.6
0.252
0.260
Bo
9
9.2
0.354
0.362
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
74VHCT02A
Tape & Reel TSSOP14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
TYP
MAX.
MIN.
330
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
TYP.
0.504
22.4
0.519
0.882
Ao
6.7
6.9
0.264
0.272
Bo
5.3
5.5
0.209
0.217
Ko
1.6
1.8
0.063
0.071
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
9/11
74VHCT02A
Table 10: Revision History
Date
Revision
16-Dec-2004
4
10/11
Description of Changes
Order Codes Revision - pag. 1.
74VHCT02A
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of use of such information nor for any infringement of patents or other rights 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 publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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11/11
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