74ALVCH16244
http://onsemi.com
5
AC CHARACTERISTICS (Note 10; t
R
= t
F
= 2.0 ns; C
L
= 30 pF; R
L
= 500 W)
Symbol Parameter Waveform
Limits
Unit
T
A
= −40°C to +85°C
V
CC
= 3.0 V to 3.6 V V
CC
= 2.3 V to 2.7 V V
CC
= 1.65 V − 1.95 V
Min Max Min Max Min Max
t
PLH
t
PHL
Propagation Delay
Input to Output
1 1.0
1.0
3.0
3.0
1.0
1.0
3.7
3.7
1.0
1.0
6.0
6.0
ns
t
PZH
t
PZL
Output Enable Time to
High and Low Level
2 1.0
1.0
4.4
4.4
1.0
1.0
5.7
5.7
1.0
1.0
8.2
8.2
ns
t
PHZ
t
PLZ
Output Disable Time From
High and Low Level
2 1.0
1.0
4.1
4.1
1.0
1.0
5.2
5.2
1.0
1.0
6.8
6.8
ns
t
OSHL
t
OSLH
Output−to−Output Skew
(Note 11)
0.5
0.5
0.5
0.5
0.75
0.75
ns
10.For C
L
= 50 pF, add approximately 300 ps to the AC maximum specification.
11. 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 same direction, either HIGH−to−LOW (t
OSHL
) or LOW−to−HIGH (t
OSLH
); parameter
guaranteed by design.
CAPACITIVE CHARACTERISTICS
Symbol Parameter Condition Typical Unit
C
IN
Input Capacitance Note 12 6 pF
C
OUT
Output Capacitance Note 12 7 pF
C
PD
Power Dissipation Capacitance Note 12, 10 MHz 20 pF
12.V
CC
= 1.8, 2.5 or 3.3 V; V
I
= 0 4 V or V
CC
.
WAVEFORM 1 − PROPAGATION DELAYS
t
R
= t
F
= 2.0 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
V
IH
0 V
V
OH
V
OL
Dn
On
t
PHL
t
PLH
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
t
R
= t
F
= 2.0 ns, 10% to 90%; f = 1 MHz; t
W
= 500 ns
V
IH
0 V
≈ 0 V
OEn
On
t
PZH
≈ V
CC
t
PHZ
t
PZL
t
PLZ
On
V
m
V
m
V
m
V
m
V
m
V
m
Figure 4. AC Waveforms
V
m
V
OH
V
y
V
x
V
OL
