74HC138; 74HCT138
Philips Semiconductors
3-to-8 line decoder/demultiplexer; inverting
11. Dynamic characteristics
Table 9:
Dynamic characteristics 74HC138
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified.
For test circuit see Figure 8.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Tamb = 25 °C
tPHL
tPLH
,
propagation delay
An to Yn
see Figure 6
VCC = 2.0 V
-
-
-
-
41
15
12
12
150
30
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
26
E3 to Yn
En to Yn
see Figure 6
VCC = 2.0 V
-
-
-
-
47
17
14
14
150
30
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
26
see Figure 7
VCC = 2.0 V
-
-
-
-
47
17
14
14
150
30
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
26
tTHL
tTLH
,
output transition
time
see Figure 6 and 7
VCC = 2.0 V
-
-
-
-
19
7
75
15
13
-
ns
ns
ns
pF
VCC = 4.5 V
VCC = 6.0 V
6
[1]
CPD
power dissipation
capacitance
VI = GND to VCC
67
Tamb = −40 °C to +85 °C
tPHL
tPLH
,
propagation delay
An to Yn
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
-
-
-
-
190
38
ns
ns
ns
33
E3 to Yn
En to Yn
-
-
-
-
-
-
190
38
ns
ns
ns
33
-
-
-
-
-
-
190
38
ns
ns
ns
33
74HC_HCT138_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 23 December 2005
11 of 23
NXP [ NXP ]
