74HC257 Datasheet, PDF (5/13 Pages) NXP Semiconductors – Quad 2-input multiplexer 3-state

Philips Semiconductors
Quad 2-input multiplexer; 3-state
Product specification
74HC/HCT257
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
SYMBOL PARAMETER
t_PHL/ t_PLH propagation delay
nI₀ to nY;
nI₁ to nY
t_PHL/ t_PLH propagation delay
S to nY
t_PZH/ t_PZL 3-state output enable time
OE to nY
t_PHZ/ t_PLZ 3-state output disable time
OE to nY
t_THL/ t_TLH output transition time
T_amb (°C)
74HC
UNIT
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
36 110
140
13 22
28
10 19
24
47 150
190
17 30
38
14 26
33
33 150
190
12 30
38
10 26
33
41 150
190
15 30
38
12 26
33
14 60
75
5 12
15
4 10
13
165 ns
33
28
225 ns
45
38
225 ns
45
38
225 ns
45
38
90 ns
18
15
TEST CONDITIONS
V_CC ^WAVEFORMS
(V)
2.0 Fig.6
4.5
6.0
2.0 Fig.6
4.5
6.0
2.0 Fig.7
4.5
6.0
2.0 Fig.7
4.5
6.0
2.0 Fig.6
4.5
6.0
1998 Sep 30
5