MC74HCT138A_05 Datasheet, PDF (4/8 Pages) ON Semiconductor – 1−of−8 Decoder/ Demultiplexer with LSTTL Compatible Inputs High−Performance Silicon−Gate CMOS

MC74HCT138A
AC ELECTRICAL CHARACTERISTICS (V_CC = 5.0 V ± 10%, C_L = 50 pF, Input t_r = t_f = 6.0 ns)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Guaranteed Limit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Symbol
Parameter
– 55 to
25_C
v 85_C v 125_C Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tPLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tPHL
Maximum Propagation Delay, Input A to Output Y
(Figures 1 and 4)
30
38
45
ns
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tPLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ t_PHL
Maximum Propagation Delay, CS1 to Output Y
(Figures 2 and 4)
27
34
41
ns
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPLH,
t_PHL
Maximum Output Transition Time, CS2 or CS3 to Output Y
(Figures 3 and 4)
30
38
45
ns
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tTLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _tTHL
Maximum Output Transition Time, Any Output
(Figures 2 and 4)
15
19
22
ns
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{tr, tf Maximum Input Rise and Fall Time}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Cin Maximum Input Capacitance}
500
500
500
ns
10
10
10
pF
NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON
Semiconductor High−Speed CMOS Data Book (DL129/D).
Typical @ 25°C, V_CC = 5.0 V
C_PD Power Dissipation Capacitance (Per Enabled Output)*
51
pF
* Used to determine the no−load dynamic power consumption: P_D = C_PD V_CC2f + I_CC V_CC. For load considerations, see Chapter 2 of the
ON Semiconductor High−Speed CMOS Data Book (DL129/D).
EXPANDED LOGIC DIAGRAM
A0 ¹
A1 ²
A2 ³
CS3 ⁵
CS2 ⁴
CS1 ⁶
15 _Y0
14 _Y1
13 _Y2
12 _Y3
11 _Y4
10 _Y5
9 _Y6
7 _Y7
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