Philips Semiconductors Product specification
74ABT00Quad 2-input NAND gate
1995 Sep 18
4
AC CHARACTERISTICS
GND = 0V; t
R
= t
F
= 2.5ns; C
L
= 50pF, R
L
= 500Ω
LIMITS
SYMBOL PARAMETER WAVEFORM
T
amb
= +25°C
V
CC
= +5.0V
T
amb
= –40°C to +85°C
V
CC
= +5.0V ±0.5V
UNIT
MIN TYP MAX MIN MAX
t
PLH
t
PHL
Propagation delay
An or Bn to Yn
1
1.0
1.0
2.5
2.0
3.6
2.8
1.0
1.0
4.1
3.4
ns
t
OSHL
t
OSLH
1
Output to Output skew
An or Bn to Yn
2
0.4
0.4
0.5
0.5
0.5
0.5
ns
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
V
M
V
M
V
M
V
M
Yn
An, Bn
t
PHL
t
PLH
SA00336
Waveform 1. Propagation delay for inverting outputs
OUTPUT N
same part
INPUT
SA00381
OUTPUT
t
PLH
MIN
t
PHL
MIN
t
PLH
MAX
t
PHL
MAX
t
OSLH
t
OSHL
Waveform 2. Common edge skew
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
R
T
V
IN
D.U.T.
V
OUT
C
L
R
L
V
CC
Test Circuit for Outputs
V
M
V
M
t
W
AMP (V)
NEGATIVE
PULSE
10% 10%
90%
90%
0V
V
M
V
M
t
W
AMP (V)
POSITIVE
PULSE
90% 90%
10%
10%
0V
t
THL
(t
F
)
t
TLH
(t
R
)t
THL
(t
F
)
t
TLH
(t
R
)
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
74ABT
SH00067
Amplitude Rep. Rate t
W
t
F
3.0V 1MHz 500ns 2.5ns
t
R
2.5ns
