NXP Semiconductors
74HC240; 74HCT240
Octal buffer/line driver; 3-state; inverting
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V; for load circuit see
Symbol Parameter
Conditions
Min
74HC240
t
pd
propagation delay nAn to nYn;
see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
V
CC
= 6.0 V
t
en
enable time
nOE to nYn; see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
t
dis
disable time
nOE to nYn or see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
t
t
transition time
see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
C
PD
power dissipation
capacitance
per transceiver;
V
I
= GND to V
CC
25
°C
Typ
Max
−40 °C
to +125
°C
Unit
Max
(85
°C)
Max
(125
°C)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
30
11
9
9
39
14
11
41
15
12
14
5
4
30
100
20
-
17
150
30
26
150
30
26
60
12
10
-
125
25
-
21
190
38
33
190
38
33
75
15
13
-
150
30
-
26
225
45
38
225
45
38
90
18
15
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
74HC_HCT240_3
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 03 — 2 August 2007
7 of 18
PHILIPS [ NXP SEMICONDUCTORS ]
