74HC238 Datasheet, PDF (6/7 Pages) NXP Semiconductors – 3-to-8 line decoder/demultiplexer

Philips Semiconductors
3-to-8 line decoder/demultiplexer
Product specification
74HC/HCT238
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
A_n
E_n
E₃
UNIT LOAD COEFFICIENT
0.70
0.40
1.45
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
min.
+25
typ. max.
74HCT
−40 to +85
min. max.
−40 to +125
min. max.
UNIT _VCC
(V)
WAVEFORMS
t_PHL
t_PLH
t_PHL
t_PLH
t_PHL
t_PLH
t_THL/ t_TLH
propagation delay
A_n to Y_n
propagation delay
A_n to Y_n
propagation delay
E₃ to Y_n
propagation delay
E₃ to Y_n
propagation delay
E_n to Y_n
propagation delay
E_n to Y_n
output transition time
21 35
44
53 ns 4.5 Fig.6
17 35
44
53 ns 4.5 Fig.6
22 37
46
56 ns 4.5 Fig.6
18 37
46
56 ns 4.5 Fig.6
21 35
44
53 ns 4.5 Fig.7
18 35
44
53 ns 4.5 Fig.7
7 15
19
22 ns 4.5 Figs 6 and 7
December 1990
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