74HC03
Quadruple 2-Input NAND Gates with Open-Drain Outputs
Features
Wide Operating Voltage Range: 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 20-µA Maximum ICC
Typical tpd = 8 ns at 5 V
±4-mA Output Drive at 5 V
Low Input Current of 1 µA
DIP14
SOP14
TSSOP14
Ordering Information
DEVICE
Package Type
MARKING
Packing
Packing Qty
74HC03N
DIP14
74HC03
TUBE
1000pcs/Box
74HC03M/TR
SOP14
74HC03
REEL
2500pcs/Reel
TSSOP14
74HC03
REEL
2500pcs/Reel
74HC03MT/TR
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2020 MAR
74HC03
Description
This device contains four independent 2-input NAND Gates with open-drain outputs. Each gate performs the
Boolean function Y = A ● B in positive logic
Functional pinout
Pin Configuration
DIP14/SOP14/TSSOP14
Pin Functions
PIN
NAME
DIP/SOP/TSSOP
1A
1B
1Y
2A
2B
2Y
GND
3Y
3A
3B
4Y
4A
4B
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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I/O
Input
Input
Output
Input
Input
Output
—
Output
Input
Input
Output
Input
Input
—
DESCRIPTION
Channel 1, Input A
Channel 1, Input B
Channel 1, Output Y
Channel 2, Input A
Channel 2, Input B
Channel 2, Output Y
Ground
Channel 3, Output Y
Channel 3, Input A
Channel 3, Input B
Channel 4, Output Y
Channel 4, Input A
Channel 4, Input B
Positive Supply
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74HC03
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)
VCC
UNIT
–0.5
7
V
Input clamp current(2)
VI < 0 or VI > VCC
±20
mA
IOK
Output clamp current(2)
VO < 0 or VO > VCC
±20
mA
Continuous output current
VO = 0 to VCC
±25
mA
Continuous current through VCC or GND
±50
mA
Junction temperature(3)
150
°C
150
°C
TJ
Tstg
2.
3.
MAX
IIK
IO
1.
Supply voltage
MIN
Storage temperature
–65
Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These
are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond
those indicated under Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for
extended periods may affect device reliability.
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Guaranteed by design.
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
VCC
VIH
VIL
Supply voltage
High-level input voltage
Low-level input voltage
MIN
NOM
MAX
UNIT
2
5
6
V
VCC = 2 V
1.5
VCC = 4.5 V
3.15
VCC = 6 V
4.2
V
VCC = 2 V
0.5
VCC = 4.5 V
1.35
VCC = 6 V
1.8
V
VI
Input voltage
0
VCC
V
VO
Output voltage
0
VCC
V
Δt/Δv
TA
Input transition rise and fall rate
Operating free-air temperature
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VCC = 2 V
1000
VCC = 4.5 V
500
VCC = 6 V
400
74HC03
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–40
85
ns
°C
2020 MAR
74HC03
Thermal Information
74HC03
THERMAL METRIC(1)
(SOP)
(DIP)
(TSSOP)
14 PINS
14 PINS
14 PINS
133.6
66.0
151.7
°C/W
89
53.7
79.4
°C/W
89.5
45.7
94.7
°C/W
45.5
33.3
25.2
°C/W
89.1
45.5
94.1
°C/W
N/A
N/A
N/A
°C/W
Junction-to-ambient
RθJA
thermal resistance
RθJC(top)
Junction-to-case (top)
thermal resistance
Junction-to-board
RθJB
thermal resistance
Junction-to-top
ΨJT
characterization parameter
Junction-to-board characterization
ΨJB
parameter
RθJC(bot)
Junction-to-case (bottom) thermal
resistance
UNIT
Electrical Characteristics
over operating free-air temperature range (unless otherwise noted) (1) (2)
Operating free-air temperature (TA)
PARAMETER
TEST CONDITIONS
VCC
25°C
MIN
IOH
VOL
VI = VIH
or VIL
Low-level
VI = VIH
output voltage
or VIL
Input leakage
II
current
ICC
Ci
Output voltage
6V
0.01
0.5
5
2V
0.002
0.1
0.1
4.5 V
0.001
0.1
0.1
6V
0.001
0.1
0.1
IOL = 4 mA
4.5 V
0.17
0.26
0.33
IOL = 5.2 mA
6V
0.15
0.26
0.33
6V
±0.1
±1
µA
6V
2
20
µA
10
10
pF
VO = VCC
IOL = 20 µA
IO = 0
Input
capacitance
(1)
VCCI is the VCC associated with the input port.
(2)
VCCO is the VCC associated with the output port.
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2 V to 6 V
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3
MIN
TYP
UNIT
MAX
VI = VCC or 0
Supply current VI = VCC or 0
-40°C to 85°C
TYP
MAX
µA
V
2020 MAR
74HC03
Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
Operating free-air temperature (TA)
PARAMETER
FROM
TO
VCC
25°C
MIN
tplh
tphl
tt
Propagation
delay, low-to-high
Propagation delay
high-to-low
A or B
Y
A or B
Y
Transition-time
Y
–40°C to 85°C
TYP
MAX
MIN
TYP
2V
60
105
131
4.5 V
13
25
31
6V
10
23
27
2V
50
100
125
4.5 V
10
20
25
6V
8
17
21
2V
38
75
95
4.5 V
8
15
19
6V
6
13
16
UNIT
MAX
ns
ns
ns
Operating Characteristics
over operating free-air temperature range; typical values measured at TA = 25°C (unless otherwise noted)
PARAMETER
Cpd
Power dissipation
capacitance per gate
TEST CONDITIONS
VCC
No load
2 V to 6 V
MIN
TYP
20
MAX
UNIT
pF
Typical Characteristics(TA = 25°C )
IOL Output Low Current (mA)
Figure 5-1. Typical output voltage in the low state (VOL)
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74HC03
Parameter Measurement Information
Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators
having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tt < 6 ns.
The outputs are measured one at a time, with one input transition per measurement
A. CL= 50 pF and includes probe and jig capacitance
A. tt is the greater of tr and tf.
Figure 6-1. Load Circuit
Figure 6-2. Voltage Wave forms Transition Times
A. The maximum between tPLH and tPHL is used for tpd.
Figure 6-3. Voltage Wave forms Propagation Delays
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74HC03
Detailed Description
Overview
This device contains four independent 2-input NAND gates with open-drain outputs. Each gate performs the
Boolean function Y = A ● B in positive logic.
Functional Block Diagram
Feature Description
CMOS Open-Drain Outputs
The open-drain output allows the device to sink current to GND but not to source current from VCC. When the
output is not actively pulling the line low, it will go into a high impedance state. This allows the device to be
used for a wide variety of applications, including up-translation and down-translation, as the output voltage can
be determined by an external pull-up resistor.
The current drive capability of this device creates fast edges into light loads, so routing and load conditions
should be considered to prevent ringing. Additionally, the outputs of this device are capable of driving larger
currents than the device can sustain without being damaged. It is important for the power output of the device
to be limited to avoid thermal runaway and damage due to over-current. The electrical and thermal limits
defined the in the Absolute Maximum Ratingsmust be followed at all times.
The 74HC03 can drive a load with a total capacitance less than or equal to the maximum load listed in the
Switching Characteristics connected to a high-impedance CMOS input while still meeting all of the datasheet
specifications. Larger capacitive loads can be applied, however it is not recommended to exceed the provided
load value. If larger capacitive loads are required, it is recommended to add a series resistor between the
output and the capacitor to limit output current to the values given in the Absolute Maximum Ratings.
Standard CMOS Inputs
Standard CMOS inputs are high impedance and are typically modeled as a resistor from the input to ground in
parallel with the input capacitance given in the Electrical Characteristics. The worst case resistance is
calculated with the maximum input voltage, given in the Absolute Maximum Ratings, and the maximum input
leakage current, given in the Electrical Characteristics, using ohm's law (R = V ÷ I).
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74HC03
Signals applied to the inputs need to have fast edge rates, as defined by the input transition time in the
Recommended Operating Conditions to avoid excessive current consumption and oscillations. If a slow or
noisy input signal is required, a device with a Sch mitt -trigger input should be used to condition the input signal
prior to the standard CMOS input.
Clamp Diode Structure
The inputs and outputs to this device have both positive and negative clamping diodes as depicted in Figure
7-1.
CAUTION
Voltages beyond the values specified in the Absolute Maximum Ratings table can cause damage to the device.
The recommended input and output voltage ratings may be exceeded if the input and output clamp-current
ratings are observed.
Figure 7-1. Electrical Placement of Clamping Diodes for Each Input and Output
Device Functional Modes
Table 7-1. Function Table
INPUTS
OUTPUT
A
B
Y
H
H
L
L
X
Z
X
L
Z
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74HC03
Physical Dimensions
DIP14
B
L1
L
E
D1
D
d
A
c
a
Dimensions In Millimeters(DIP14)
A
B
D
D1
E
L
L1
a
c
Min:
6.10
18.94
8.40
7.42
3.10
0.50
3.00
1.50
0.40
Max:
6.68
19.56
9.00
7.82
3.55
0.70
3.60
1.55
0.50
Symbol:
d
2.54 BSC
SOP14
Q
A
C
C1
B
D
A1
a
0.25
b
Dimensions In Millimeters(SOP14)
A
A1
B
C
C1
D
Min:
1.35
0.05
8.55
5.80
3.80
0.40
0°
0.35
Max:
1.55
0.20
8.75
6.20
4.00
0.80
8°
0.45
Symbol:
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Q
a
b
1.27 BSC
2020 MAR
74HC03
Physical Dimensions
TSSOP14
Dimensions In Millimeters(TSSOP14)
A
A1
B
C
C1
D
Min:
0.85
0.05
4.90
6.20
4.30
0.40
0°
0.20
Max:
0.95
0.20
5.10
6.60
4.50
0.80
8°
0.25
Symbol:
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Q
a
b
0.65 BSC
2020 MAR
74HC03
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