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April 1988
Revised July 1999
74F20
Dual 4-Input NAND Gate
General Description
This device contains two independent gates, each of which
performs the logic NAND function.
Ordering Code:
Order Number Package Number Package Description
74F20SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
74F20SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F20PC N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also availab le in Tape and Reel. Specify by appending the suffix letter “X ” to the ordering code.
74F20 Dual 4-Input NAND Gate
Logic Symbol
IEEE/IEC
Unit Loading/Fan Out
Pin Names Description
An, Bn, Cn, DnInputs 1.0/1.0 20 µA/−0.6 mA
O
n
Connection Diagram
U.L.
HIGH/LOW
Outputs 50/33.3 −1 mA/20 mA
Input I
Output I
IH/IIL
OH/IOL
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Absolute Maximum Ratings(Note 1) Recommended Operating
74F20
Storage Temperature −65°C to +150°C
Ambient Temperature under Bias −55°C to +125°C
Junction Temperature under Bias −55°C to +150°C
V
Pin Potential to Ground Pin −0.5V to +7.0V
CC
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output −0.5V to V
3-STATE Output −0.5V to +5.5V
Current Applied to Output
in LOW State (Max) twice the rated I
OL
Conditions
Free Air Ambient Temperature 0°C to +70°C
Supply Voltage +4.5V to +5.5V
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
CC
under these conditions is not implied.
Note 2: Either v oltage limit or current limit is sufficient to protect inputs.
(mA)
DC Electrical Characteristics
Symbol Parameter Min Typ Max Units
V
V
V
V
V
I
I
I
V
I
I
I
I
I
IH
IL
CD
OH
OL
IH
BVI
CEX
ID
OD
IL
OS
CCH
CCL
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
Input LOW Voltage 0.8 V Recognized as a LOW Signal
Input Clamp Diode Voltage −1.2 V Min IIN = −18 mA
Output HIGH 10% V
Voltage 5% V
Output LOW 10% V
Voltage
Input HIGH
Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage
Test All other pins grounded
Output Leakage
Circuit Current All other pins grounded
Input LOW Current −0.6 mA Max VIN = 0.5V
Output Short-Circuit Current −60 −150 mA Max V
Power Supply Current 0.9 1.4 mA Max VO = HIGH
Power Supply Current 3.4 5.1 mA Max VO = LOW
2.5 V Min IOH = −1 mA
CC
2.7 IOH = −1 mA
CC
CC
4.75 V 0.0
0.5 V Min IOL = 20 mA
5.0 µAMaxVIN = 2.7V
7.0 µAMaxVIN = 7.0V
50 µAMaxV
3.75 µA0.0
AC Electrical Characteristics
Symbol Parameter
t
PLH
t
PHL
Propagation Delay 2.4 3.7 5.0 2.0 7.0 2.4 6.0
An, Bn, Cn, Dn to On
TA = +25°CT
VCC = +5.0V VCC = +5.0V VCC = +5.0V
CL = 50 pF CL = 50 pF CL = 50 pF
Min Typ Max Min Max Min Max
1.5 3.2 4.3 1.5 6.5 1.5 5.3
= −55° to +125°CTA = 0°C to +70°C
A
V
CC
= V
OUT
IID = 1.9 µA
V
= 150 mV
IOD
= 0V
OUT
Conditions
CC
Units
ns
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Physical Dimensions inches (millimeters) unless otherwise noted
74F20
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14A
Package Number M14D
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
74F20 Dual 4-Input NAND Gate
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Fairchild does no t assume any responsibility for use of an y circuitry d escribed, no c ircuit patent l icenses are i mplied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a sig nificant injury to the
user.
Package Number N14A
2. A critical com ponen t in any com pone nt of a life s uppor t
device or system w hose fa ilure to perform can be r easonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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