Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ABT20
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
I
IK
V
I
I
OK
V
OUT
I
OUT
T
stg
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
3
DC output diode current
DC output voltage
3
DC output current
Storage temperature range
V
O
< 0
output in Off or High state
output in Low state
V
I
< 0
CONDITIONS
RATING
–0.5 to +7.0
–18
–1.2 to +7.0
–50
–0.5 to +5.5
40
–65 to 150
UNIT
V
mA
V
mA
V
mA
°C
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
I
V
IH
V
IL
I
OH
I
OL
∆t/∆v
T
amb
DC supply voltage
Input voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature range
0
–40
PARAMETER
LIMITS
MIN
4.5
0
2.0
0.8
–15
20
10
+85
MAX
5.5
V
CC
UNIT
V
V
V
V
mA
mA
ns/V
°C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
MIN
V
IK
V
OH
V
OL
I
I
I
OFF
I
CEX
I
O
I
CC
∆I
CC
Input clamp voltage
High-level output voltage
Low-level output voltage
Input leakage current
Power-off leakage current
Output High leakage current
Output current
1
Quiescent supply current
Additional supply current per
input pin
2
V
CC
= 4.5V; I
IK
= –18mA
V
CC
= 4.5V; I
OH
= –15mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OL
= 20mA; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 0.0V; V
O
or V
I
≤
4.5V
V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
V
CC
= 5.5V; V
O
= 2.5V
V
CC
= 5.5V; V
I
= GND or V
CC
V
CC
= 5.5V; One data input at 3.4V, other
inputs at V
CC
or GND
–50
2.5
TYP
–0.9
2.9
0.35
±0.01
±5.0
5.0
–75
2
0.25
0.5
±1.0
±100
50
–180
50
500
–50
MAX
–1.2
2.5
0.5
±1.0
±100
50
–180
50
500
T
amb
= –40°C
to +85°C
MIN
MAX
–1.2
V
V
V
µA
µA
µA
mA
µA
µA
UNIT
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. For valid test results, data must not be loaded into the flip-flop or latch after applying the power.
1995 Sep 22
2
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ABT20
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500Ω
LIMITS
SYMBOL
PARAMETER
WAVEFORM
MIN
t
PLH
t
PHL
t
OSHL
t
OSLH1
Propagation delay
An, Bn, Cn, Dn to Yn
Output to Output skew
An or Bn to Yn
1
2
1.0
1.0
T
amb
= +25°C
V
CC
= +5.0V
TYP
2.7
2.2
0.3
MAX
3.9
3.4
0.5
T
amb
= –40°C to +85°C
V
CC
= +5.0V
±0.5V
MIN
1.0
1.0
MAX
4.6
3.8
0.5
ns
ns
UNIT
NOTE:
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same
device. The specification applies to any outputs switching in the the same direction, either HIGH–to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
);
parameter guaranteed by design.
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 3.0V
An, Bn,
Cn, Dn
INPUT
V
M
t
PHL
V
M
t
PLH
OUTPUT
t
PHL
MIN
Yn
V
M
V
M
OUTPUT N
same part
t
PLH
MIN
SA00353
Waveform 1. Propagation Delay for Inverting Outputs
t
PLH
MAX
t
PHL
MAX
t
OSLH
t
OSHL
SA00381
Waveform 2. Common edge skew
TEST CIRCUIT AND WAVEFORMS
V
CC
90%
NEGATIVE
PULSE
V
IN
D.U.T.
R
T
C
L
R
L
POSITIVE
PULSE
V
OUT
V
M
10%
t
THL
(t
F
)
t
TLH
(t
R
)
90%
V
M
t
W
90%
V
M
10%
0V
10%
0V
PULSE
GENERATOR
t
TLH
(t
R
)
t
THL
(t
F
)
AMP (V)
t
W
V
M
90%
AMP (V)
Test Circuit for Outputs
10%
V
M
= 1.5V
Input Pulse Definition
DEFINITIONS
R
L
= Load resistor; see AC CHARACTERISTICS for value.
C
L
= Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
R
T
= Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
Amplitude
74ABT
3.0V
Rep. Rate
1MHz
t
W
500ns
t
R
2.5ns
t
F
2.5ns
SH00067
1995 Sep 22
3
PCB Design
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