Document
UNISONIC TECHNOLOGIES CO., LTD U74HC20
DUAL 4-INPUT NAND GATES
DESCRIPTION
The U74HC20 contains two independent 4-input NAND gates.They perform the Boolean function Y=A B C D or Y=A B C D in positive logic.
FEATURES
* Operation voltage range: * Low Quiescent Current: * High speed: * Low input current:
2~6V ICC=2µA (Max.) tPD=11ns (Typ.) 100nA (Max.)
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74HC20L-S14-R
U74HC20G-S14-R
U74HC20L-P14-R
U74HC20G-P14-R
Package
SOP-14 TSSOP-14
CMOS IC
Packing Tape Reel Tape Reel
MARKING
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U74HC20
PIN CONFIGURATION
1A 1 1B 2 NC 3 1C 4 1D 5 1Y 6 GND 7
14 VCC 13 2D 12 2C 11 NC 10 2B 9 2A 8 2Y
FUNCTION TABLE (each gate)
INPUT(A)
H L X X X
INPUT(B) H X L X X
LOGIC DIAGRAM
INPUT(C)
H X X L X
INPUT(D)
H X X X L
CMOS IC
OUTPUT(Y) L H H H H
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U74HC20
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage Input Clamp Current
VCC
-0.5 ~ 7
V
IIK
±20
mA
Output Clamp Current Output Current
IOK
±20
mA
IOUT
±25
mA
VCC or GND Current Storage Temperature
ICC TSTG
±50
mA
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER Junction to Ambient
SOP-14 TSSOP-14
SYMBOL θJA
RECOMMENDED OPERATING CONDITIONS
RATINGS 76 113
UNIT °C/W °C/W
PARAMETER Supply Voltage Input Voltage Output Voltage
Input Transition Rise or Fall Rate
Operating Temperature
SYMBOL VCC VIN VOUT
tR, tF
TA
CONDITIONS
VCC=2V VCC=4.5V VCC=6V
STATIC CHARACTERISTICS (TA=25°С ,unless otherwise specified)
MIN TYP MAX UNIT
2
6
V
0
VCC
V
0
VCC
V
1000 ns
500 ns
400 ns
-40
+125 °C
PARAMETER High-Level Input Voltage Low-Level Input Voltage
High-Level Output Voltage
Low-Level Output Voltage Input Leakage Current Quiescent Supply Current Input Capacitance
SYMBOL VIH VIL
VOH
VOL II(LEAK)
IQ CIN
TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V, IOH=20µA VCC=4.5V, IOH=20µA VCC=6V, IOH=20µA VCC=4.5V, IOH=4mA VCC=6V, IOH=5.2mA VCC=2V, IOL=20µA VCC=4.5V, IOL=20µA VCC=6V, IOL=20µA VCC=4.5V, IOL=4mA VCC=6V, IOL=5.2mA VCC=6V, VIN=VCC or GND VCC=6V, VIN=VCC or GND, IOUT=0 VCC=2V~6V
MIN TYP MAX UNIT
1.5
V
3.15
V
4.2
V
0.5
V
1.35 V
1.8
V
1.9 1.998
V
4.4 4.499
V
5.9 5.999
V
3.98 4.3
V
5.48 5.8
V
0.002 0.1
V
0.001 0.1
V
0.001 0.1
V
0.17 0.26 V
0.15 0.26 V
±0.1 ±100 nA
2
µA
3
10 pF
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U74HC20
CMOS IC
DYNAMIC CHARACTERISTICS (TA=25°С, Input: tR=tF=6ns, unless otherwise specified )
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
Propagation delay from Input(A, B, C or D) to Output(Y)
tPLH, tPHL
VCC=2V, CL=50pF VCC=4.5V, CL=50pF VCC=6V, CL=50pF VCC=2V, CL=50pF
Output Transition Time
tT
VCC=4.5V, CL=50pF
VCC=6V, CL=50pF
OPERATING CHARACTERISTICS (TA=25°С, unless otherwise specified)
TYP MAX UNIT
45 110 ns
14
22
ns
11
19
ns
27
75
ns
9
15
ns
7
13
ns
PARAMETER Power Dissipation Capacitance
SYMBOL
TEST CONDITION
CPD
No load
MIN TYP MAX UNIT
25
pF
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U74HC20
TEST CIRCUIT AND WAVEFORMS
CL (Note)
Note : CL includes probe and jig capacitance.
Output
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. UTC reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof.
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