English
Language : 

74HC138BQ Datasheet, PDF (5/19 Pages) NXP Semiconductors – 3-to-8 line decoder/demultiplexer inverting
NXP Semiconductors
74HC138; 74HCT138
3-to-8 line decoder/demultiplexer; inverting
Table 4. Limiting values …continued
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
Ptot
total power dissipation
DIP16 package
[1] -
750 mW
SO16 package
[2] -
500 mW
SSOP16 package
[3] -
500 mW
TSSOP16 package
[3] -
500 mW
DHVQFN16 package
[4] -
500 mW
[1] For DIP16 package: Ptot derates linearly with 12 mW/K above 70 °C.
[2] For SO16 package: Ptot derates linearly with 8 mW/K above 70 °C.
[3] For SSOP16 and TSSOP16 packages: Ptot derates linearly with 5.5 mW/K above 60 °C.
[4] For DHVQFN16 packages: Ptot derates linearly with 4.5 mW/K above 60 °C.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
Conditions
VCC
VI
VO
Tamb
Δt/ΔV
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
9. Static characteristics
74HC138
Min Typ
2.0 5.0
0
-
0
-
−40 +25
-
-
-
1.67
-
-
Max
6.0
VCC
VCC
+125
625
139
83
74HCT138
Min Typ
4.5 5.0
0
-
0
-
−40 +25
-
-
-
1.67
-
-
Max
5.5
VCC
VCC
+125
-
139
-
Unit
V
V
V
°C
ns/V
ns/V
ns/V
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Tamb = 25 °C
Tamb = −40 °C to Tamb = −40 °C to Unit
+85 °C
+125 °C
Min Typ Max Min Max
Min
Max
74HC138
VIH
HIGH-level
VCC = 2.0 V
input voltage VCC = 4.5 V
VCC = 6.0 V
VIL
LOW-level
VCC = 2.0 V
input voltage VCC = 4.5 V
VCC = 6.0 V
1.5 1.2 -
1.5
-
1.5
-V
3.15 2.4 - 3.15
-
3.15
-V
4.2 3.2 -
4.2
-
4.2
-V
- 0.8 0.5
-
0.5
-
0.5 V
- 2.1 1.35 -
1.35
-
1.35 V
- 2.8 1.8
-
1.8
-
1.8 V
74HC_HCT138
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 27 June 2012
© NXP B.V. 2012. All rights reserved.
5 of 19