74LV241_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 03 — 10 October 2005 8 of 17
Philips Semiconductors
74LV241
Octal buffer/line driver; 3-state
[1] All typical values are measured at T
amb
=25°C
[2] These typical values are measured at V
CC
= 3.3 V
[3] C
PD
is used to determine the dynamic power dissipation (P
D
in µW).
P
D
=C
PD
× V
CC
2
× f
i
× N+Σ(C
L
× V
CC
2
× f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
Σ(C
L
× V
CC
2
× f
o
) = sum of the outputs.
12. Waveforms
t
PZH
, t
PZL
3-state output enable time
1
OE to 1Yn, 2OE to 2Yn
see
Figure 6 and Figure 7
V
CC
= 1.2 V ---ns
V
CC
= 2.0 V - - 44 ns
V
CC
= 2.7 V - - 33 ns
V
CC
= 3.0 V to 3.6 V - - 26 ns
t
PHZ
, t
PLZ
3-state output disable time
1
OE to 1Yn, 2OE to 2Yn
see
Figure 6 and Figure 7
V
CC
= 1.2 V ---ns
V
CC
= 2.0 V - - 48 ns
V
CC
= 2.7 V - - 36 ns
V
CC
= 3.0 V to 3.6 V - - 29 ns
Table 8: Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); C
L
= 50 pF; unless otherwise stated; for test circuit see Figure 8
Symbol Parameter Conditions Min Typ Max Unit
For measurement points see Table 9
V
OL
and V
OH
are the typical output voltage drop that occur with the output load
Fig 5. Input (1An, 2An) to output (1Yn, 2Yn) propagation delay
mna774
1An, 2An
input
1Yn, 2Yn
output
t
PHL
t
PLH
GND
V
I
V
M
V
M
V
OH
V
OL
