74HC157 Datasheet, PDF (6/7 Pages) NXP Semiconductors – Quad 2-input multiplexer

Philips Semiconductors
Quad 2-input multiplexer
Product specification
74HC/HCT157
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
nI₀
nI₁
E
S
UNIT LOAD COEFFICIENT
1.00
1.00
0.60
1.00
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HCT
+25
−40 to +85
min. typ. max. min. max.
t_PHL/ t_PLH propagation delay
16 27
34
nI₀ to nY;
nI₁ to nY
t_PHL/ t_PLH propagation delay
15 26
33
E to nY
t_PHL/ t_PLH propagation delay
22 37
46
S to nY
t_THL/ t_TLH output transition
7 15
19
time
TEST CONDITIONS
−40 to +125
min. max.
UNIT
V_CC ^WAVEFORMS
(V)
41
ns
4.5 Fig.7
39
ns
4.5 Fig.6
56
ns
4.5 Fig.7
22
ns
4.5 Fig.6 and Fig.7
December 1990
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