74HC240 Datasheet, PDF (5/7 Pages) NXP Semiconductors – Octal buffer/line driver; 3-state; inverting

Philips Semiconductors
Octal buffer/line driver; 3-state; inverting
Product specification
74HC/HCT240
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I_CC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HC
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
1A_n to 1Y_n;
2A_n to 2Y_n
30 100
125
11 20
25
9 17
21
t_PZH/ t_PZL 3-state output enable time
39 150
190
1OE to 1Y_n;
14 30
38
2OE to 2Y_n
11 26
33
t_PHZ/ t_PLZ 3-state output disable time
41 150
190
1OE to 1Y_n;
15 30
38
2OE to 2Y_n
12 26
33
t_THL/ t_TLH output transition time
14 60
75
5 12
15
4 10
13
150 ns
30
26
225 ns
45
38
225 ns
45
38
90 ns
18
15
TEST CONDITIONS
V_CC ^WAVEFORMS
(V)
2.0 Fig.5
4.5
6.0
2.0 Fig.6
4.5
6.0
2.0 Fig.6
4.5
6.0
2.0 Fig.5
4.5
6.0
December 1990
5