74HC_HCT238_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 19 February 2013 6 of 17
NXP Semiconductors
74HC238-Q100; 74HCT238-Q100
3-to-8 line decoder/demultiplexer
9. Static characteristics
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max
74HC238-Q100
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V 1.5 1.2 - 1.5 - 1.5 - V
V
CC
= 4.5 V 3.15 2.4 - 3.15 - 3.15 - V
V
CC
= 6.0 V 4.2 3.2 - 4.2 - 4.2 - V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V - 0.8 0.5 - 0.5 - 0.5 V
V
CC
= 4.5 V - 2.1 1.35 - 1.35 - 1.35 V
V
CC
= 6.0 V - 2.8 1.8 - 1.8 - 1.8 V
V
OH
HIGH-level
output voltage
V
I
=V
IH
or V
IL
I
O
= 20 A; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= 20 A; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= 20 A; V
CC
= 6.0 V 5.9 6.0 - 5.9 - 5.9 - V
I
O
= 4.0 mA; V
CC
= 4.5 V 3.98 4.32 - 3.84 - 3.7 - V
I
O
= 5.2 mA; V
CC
= 6.0 V 5.48 5.81 - 5.34 - 5.2 - V
V
OL
LOW-level
output voltage
V
I
=V
IH
or V
IL
I
O
=20A; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 6.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=4.0mA; V
CC
= 4.5 V - 0.15 0.26 - 0.33 - 0.4 V
I
O
=5.2mA; V
CC
= 6.0 V - 0.16 0.26 - 0.33 - 0.4 V
I
I
input leakage
current
V
I
=V
CC
or GND;
V
CC
=6.0V
--0.1 - 1.0 - 1.0 A
I
CC
supply current V
I
=V
CC
or GND; I
O
=0A;
V
CC
=6.0V
- - 8.0 - 80 - 160 A
C
I
input
capacitance
-3.5 - - - - - pF
74HCT238-Q100
V
IH
HIGH-level
input voltage
V
CC
= 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V
V
IL
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V
V
OH
HIGH-level
output voltage
V
I
=V
IH
or V
IL
; V
CC
=4.5V
I
O
= 20 A 4.4 4.5 - 4.4 - 4.4 - V
I
O
= 4.0 mA 3.98 4.32 - 3.84 - 3.7 - V
V
OL
LOW-level
output voltage
V
I
=V
IH
or V
IL
; V
CC
=4.5V
I
O
=20A - 0 0.1 - 0.1 - 0.1 V
I
O
= 4.0 mA - 0.16 0.26 - 0.33 - 0.4 V
I
I
input leakage
current
V
I
=V
CC
or GND;
V
CC
=5.5V
--0.1 - 1.0 - 1.0 A
74HC_HCT238_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 19 February 2013 7 of 17
NXP Semiconductors
74HC238-Q100; 74HCT238-Q100
3-to-8 line decoder/demultiplexer
10. Dynamic characteristics
I
CC
supply current V
I
=V
CC
or GND;
V
CC
=5.5V; I
O
=0A
- - 8.0 - 80 - 160 A
I
CC
additional
supply current
per input pin;
V
I
=V
CC
2.1 V;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V;
I
O
=0A
An inputs - 70 252 - 315 - 343 A
E
1, E2 inputs - 40 144 - 180 - 196 A
E3 input - 145 522 - 653 - 711 A
C
I
input
capacitance
-3.5 - - - - - pF
Table 6. Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max
Table 7. Dynamic characteristics
GND = 0 V; test circuit see Figure 8.
Symbol Parameter Conditions 25 C 40 C to +125 C
Min Typ Max Max
(85 C)
Max
(125 C)
Unit
74HC238-Q100
t
pd
propagation delay An to Yn; see Figure 6
[1]
V
CC
= 2.0 V - 47 150 190 225 ns
V
CC
= 4.5 V - 17 30 38 45 ns
V
CC
= 5.0 V; C
L
=15pF - 14 - - - ns
V
CC
= 6.0 V - 14 26 33 38 ns
E3 to Yn; see Figure 6
[1]
V
CC
= 2.0 V - 52 160 200 240 ns
V
CC
= 4.5 V - 19 32 40 48 ns
V
CC
= 5.0 V; C
L
=15pF - 16 - - - ns
V
CC
= 6.0 V - 15 27 34 41 ns
E
n to Yn or see Figure 7
[1]
V
CC
= 2.0 V - 50 155 195 235 ns
V
CC
= 4.5 V - 18 31 39 47 ns
V
CC
= 5.0 V; C
L
=15pF - 17 - - - ns
V
CC
= 6.0 V - 14 26 33 40 ns
t
t
transition time see Figure 6 and Figure 7
[2]
V
CC
= 2.0 V - 19 75 95 110 ns
V
CC
= 4.5 V - 7 15 19 22 ns
V
CC
= 6.0 V - 6 13 16 19 ns
C
PD
power dissipation
capacitance
per package; V
I
=GNDtoV
CC
[3]
-72- - -pF
74HC_HCT238_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 19 February 2013 8 of 17
NXP Semiconductors
74HC238-Q100; 74HCT238-Q100
3-to-8 line decoder/demultiplexer
[1] t
pd
is the same as t
PHL
and t
PLH
.
[2] t
t
is the same as t
THL
and t
TLH
.
[3] C
PD
is used to determine the dynamic power dissipation (P
D
in W):
P
D
=C
PD
V
CC
2
f
i
N+ (C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of outputs.
11. Waveforms
74HCT238-Q100
t
pd
propagation delay An to Yn; see Figure 6
[1]
V
CC
= 4.5 V - 19 35 44 53 ns
V
CC
= 5.0 V; C
L
=15pF - 18 - - - ns
E3 to Yn; see Figure 6
[1]
V
CC
= 4.5 V - 20 37 46 56 ns
V
CC
= 5.0 V; C
L
=15pF - 20 - - - ns
E
n to Yn or see Figure 7
[1]
V
CC
= 4.5 V - 20 35 44 53 ns
V
CC
= 5.0 V; C
L
=15pF - 21 - - - ns
t
t
transition time V
CC
= 4.5 V;
see Figure 6 and Figure 7
[2]
- 7 15 19 22 ns
C
PD
power dissipation
capacitance
per package;
V
I
=GNDtoV
CC
1.5 V
[3]
-76- - -pF
Table 7. Dynamic characteristics
GND = 0 V; test circuit see Figure 8
.
Symbol Parameter Conditions 25 C 40 C to +125 C
Min Typ Max Max
(85 C)
Max
(125 C)
Unit
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 6. Input (An, E3) to output (Yn) propagation delays and output transition times
001aag757
An, E3 input
Yn output
t
THL
t
TLH
V
M
V
M
V
X
V
Y
t
PHL
t
PLH

74HC238BQ-Q100X

Mfr. #:
Manufacturer:
Nexperia
Description:
Encoders, Decoders, Multiplexers & Demultiplexers 74HC238BQ-Q100/DHVQFN16/REEL 7
Lifecycle:
New from this manufacturer.
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