Philips Semiconductors
Product specification
Quad buffers (3-State)
74F125, 74F126
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
V
CC
= +5.0V
T
amb
= +25°C
C
L
= 50pF, R
L
= 500Ω
MIN
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Qn
Output Enable time
to High or Low level
Output Disable time
from High or Low level
Propagation delay
Dn to Qn
Output Enable time
to High or Low level
Output Disable time
from High or Low level
74F126
74F125
Waveform 1
Waveform 2
Waveform 3
Waveform 2
Waveform 3
Waveform 1
Waveform 2
Waveform 3
Waveform 2
Waveform 3
2.0
3.0
3.5
4.0
1.5
1.5
2.0
3.0
4.0
4.0
2.0
3.0
TYP
4.0
5.5
5.5
6.0
3.5
3.5
4.0
5.5
6.0
6.0
4.5
5.5
MAX
6.0
7.5
7.5
8.0
5.0
5.5
6.5
8.0
7.5
8.0
6.5
7.5
V
CC
= +5.0V
±
10%
T
amb
= 0°C to +70°C
C
L
= 50pF, R
L
= 500Ω
MIN
2.0
3.0
3.5
4.0
1.5
1.5
2.0
3.0
3.5
3.5
2.0
3.0
MAX
6.5
8.0
8.5
9.0
6.0
6.0
7.0
8.5
8.5
8.5
7.5
8.0
ns
ns
ns
ns
ns
ns
UNIT
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
OEn
Dn
V
M
t
PLH
V
M
t
PHL
Qn
V
M
OEn
t
PZL
t
PLZ
V
M
Qn
V
M
V
M
V
M
V
OL
+0.3V
SF00125
SF00127
Waveform 1. Propagation Delay for Input to Output
Waveform 3. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
OEn
V
M
OEn
t
PZH
t
PHZ
V
OH
–0.3V
0V
V
M
Qn
V
M
SF00126
Waveform 2. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
March 28, 1989
5
PHILIPS [ NXP SEMICONDUCTORS ]
