74AHC138D [NEXPERIA]
3-to-8 line decoder/demultiplexer; invertingProduction;型号: | 74AHC138D |
厂家: | Nexperia |
描述: | 3-to-8 line decoder/demultiplexer; invertingProduction 驱动 光电二极管 逻辑集成电路 |
文件: | 总15页 (文件大小:256K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
Rev. 5 — 10 September 2020
Product data sheet
1. General description
The 74AHC138; 74AHCT138 are high-speed Si-gate CMOS devices and are pin compatible with
Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A.
The 74AHC138; 74AHCT138 is a 3-to-8 line decoder/demultiplexer. It accepts three binary
weighted address inputs (A0, A1 and A2) and, when enabled, provides eight mutually exclusive
outputs (Y0 to Y7) that are LOW when selected.
There are three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3). Every
output will be HIGH unless E1 and E2 are LOW and E3 is HIGH.
This multiple enable function allows easy parallel expansion of the device to a 1-of-32 (5 lines to
32 lines) decoder with just four 74AHC138; 74AHCT138 devices and one inverter. The 74AHC138;
74AHCT138 can be used as an eight output demultiplexer by using one of the active LOW enable
inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be
permanently tied to their appropriate active HIGH or LOW state.
2. Features and benefits
•
Balanced propagation delays
•
•
•
•
•
•
•
•
All inputs have Schmitt-trigger action
Demultiplexing capability
Multiple input enable for easy expansion
Ideal for memory chip select decoding
Inputs accepts voltages higher than VCC
For 74AHC138 only: operates with CMOS input levels
For 74AHCT138 only: operates with TTL input levels
ESD protection:
•
•
•
HBM JESD22-A114E exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101C exceeds 1000 V
•
•
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range Name
Description
Version
74AHC138D
-40 °C to +125 °C
-40 °C to +125 °C
-40 °C to +125 °C
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
74AHCT138D
74AHC138PW
74AHCT138PW
74AHC138BQ
74AHCT138BQ
TSSOP16
plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1
SOT763-1
DHVQFN16 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 16 terminals;
body 2.5 × 3.5 × 0.85 mm
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
4. Functional diagram
DX
0
X/Y
15
14
13
12
11
10
15
14
13
12
11
10
0
1
2
3
0
1
2
3
1
2
3
1
2
3
0
2
1
2
4
G
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
A0
A1
A2
15
14
13
12
11
10
9
1
2
3
7
4
5
6
7
4
5
6
7
4
4
&
&
E1
E2
E3
9
7
9
7
4
5
6
5
6
5
6
EN
7
mna371
(a)
(b)
mna370
Fig. 1. Logic symbol
Fig. 2. IEC logic symbol
Y0
Y1
15
14
A0
1
2
3
A1
A2
Y2 13
Y3
Y4 11
12
3-to-8
DECODER
ENABLE
EXITING
Y5
Y6
Y7
10
9
7
4
5
6
E1
E2
E3
mna372
Fig. 3. Functional diagram
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
2 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
5. Pinning information
5.1. Pinning
74AHC138
74AHCT138
terminal 1
index area
74AHC138
74AHCT138
2
3
4
5
6
7
15
14
13
12
11
10
A1
A2
E1
E2
E3
Y7
Y0
Y1
Y2
Y3
Y4
Y5
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
A1
V
CC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
A2
(1)
GND
E1
E2
aaa-032320
E3
Transparent top view
Y7
(1) This is not a ground pin. There is no electrical or
mechanical requirement to solder the pad. In case
soldered, the solder land should remain floating or
connected to GND.
GND
aaa-032319
Fig. 4. Pin configuration SOT109-1 (SO16) and
SOT403-1 (TSSOP16)
Fig. 5. Pin configuration SOT763-1 (DHVQFN16)
5.2. Pin description
Table 2. Pin description
Symbol
A0
Pin
1
Description
address input
A1
2
address input
A2
3
address input
E1
4
enable input (active LOW)
enable input (active LOW)
enable input (active HIGH)
ground (0 V)
E2
5
E3
6
GND
Y0 to Y7
VCC
8
15, 14, 13, 12, 11, 10, 9, 7
16
output
supply voltage
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
3 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
6. Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care
Input
Output
E1
H
X
X
L
E2
X
H
X
L
E3
X
A0
X
X
X
L
A1
X
X
X
L
A2
X
X
X
L
Y0
H
H
H
L
Y1
H
H
H
H
L
Y2
H
H
H
H
H
L
Y3
H
H
H
H
H
H
L
Y4
H
H
H
H
H
H
H
L
Y5
H
H
H
H
H
H
H
H
L
Y6
H
H
H
H
H
H
H
H
H
L
Y7
H
H
H
H
H
H
H
H
H
H
L
X
L
H
H
H
H
H
H
H
H
L
L
H
L
L
L
H
H
H
H
H
H
H
L
L
H
H
L
L
H
H
H
H
H
H
L
L
H
L
L
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
L
L
H
L
L
H
H
H
L
L
H
H
H
H
L
L
H
H
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
VCC
VI
Parameter
Conditions
Min
-0.5
-0.5
-20
-
Max Unit
supply voltage
+7.0
+7.0
-
V
input voltage
V
IIK
input clamping current
output clamping current
output current
VI < -0.5 V
[1]
[1]
mA
mA
mA
mA
mA
IOK
VO < -0.5 V or VO > VCC + 0.5 V
VO = -0.5 V to (VCC + 0.5 V)
±20
±25
75
IO
-
ICC
supply current
-
IGND
Tstg
Ptot
ground current
-75
-65
-
-
storage temperature
total power dissipation
+150 °C
500 mW
Tamb = -40 °C to +125 °C
[2]
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SOT109-1 (SO16) package: Ptot derates linearly with 12.4 mW/K above 110 °C.
For SOT403-1 (TSSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C.
For SOT763-1 (DHVQFN16) package: Ptot derates linearly with 11.2 mW/K above 106 °C.
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
4 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
8. Recommended operating conditions
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
74AHC138
74AHCT138
Unit
Min
2.0
0
Typ
Max
5.5
Min
4.5
0
Typ
Max
5.5
VCC
VI
supply voltage
input voltage
5.0
5.0
V
V
V
-
5.5
-
5.5
VO
output voltage
ambient temperature
0
-
VCC
+125
100
20
0
-
VCC
Tamb
Δt/ΔV
-40
-
+25
-40
-
+25
+125 °C
input transition rise and VCC = 3.3 V ± 0.3 V
fall rate
-
-
-
-
-
ns/V
ns/V
VCC = 5.0 V ± 0.5 V
-
-
20
9. Static characteristics
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 °C
Min Typ Max
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
74AHC138
VIH
HIGH-level
input voltage
VCC = 2.0 V
VCC = 3.0 V
VCC = 5.5 V
VCC = 2.0 V
VCC = 3.0 V
VCC = 5.5 V
VI = VIH or VIL
1.5
-
-
-
-
-
-
-
-
1.5
-
-
1.5
-
-
V
V
V
V
V
V
2.1
2.1
2.1
3.85
-
3.85
-
3.85
-
VIL
LOW-level
input voltage
-
-
-
0.5
0.9
1.65
-
-
-
0.5
0.9
1.65
-
-
-
0.5
0.9
1.65
VOH
HIGH-level
output voltage
IO = -50 μA; VCC = 2.0 V
1.9
2.9
2.0
3.0
4.5
-
-
-
-
-
-
1.9
2.9
-
-
-
-
-
1.9
2.9
4.4
2.4
3.7
-
-
-
-
-
V
V
V
V
V
IO = -50 μA; VCC = 3.0 V
IO = -50 μA; VCC = 4.5 V
IO = -4.0 mA; VCC = 3.0 V
IO = -8.0 mA; VCC = 4.5 V
4.4
4.4
2.58
3.94
2.48
3.8
-
VOL
LOW-level
VI = VIH or VIL
output voltage
IO = 50 μA; VCC = 2.0 V
IO = 50 μA; VCC = 3.0 V
IO = 50 μA; VCC = 4.5 V
IO = 4.0 mA; VCC = 3.0 V
IO = 8.0 mA; VCC = 4.5 V
-
-
-
-
-
-
0
0
0
-
0.1
0.1
-
-
-
-
-
-
0.1
0.1
-
-
-
-
-
-
0.1
0.1
V
V
0.1
0.1
0.1
V
0.36
0.36
0.1
0.44
0.44
1.0
0.55
0.55
2.0
V
-
V
II
input leakage VI = 5.5 V or GND;
current VCC = 0 V or 5.5 V
-
μA
ICC
CI
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
-
4.0
10
-
-
40
10
-
-
80
10
μA
pF
input
3.0
capacitance
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
5 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
Symbol Parameter
74AHCT138
Conditions
25 °C
Min Typ Max
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.0
-
-
-
-
2.0
-
-
2.0
-
-
V
V
VIL
LOW-level
0.8
0.8
0.8
input voltage
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = -50 μA
4.4
4.5
-
-
-
4.4
3.8
-
-
4.4
3.7
-
-
V
V
IO = -8.0 mA
3.94
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 50 μA
-
-
-
0
-
0.1
0.36
0.1
-
-
-
0.1
0.44
1.0
-
-
-
0.1
0.55
2.0
V
IO = 8.0 mA
V
II
input leakage VI = 5.5 V or GND;
current VCC = 0 V or 5.5 V
-
μA
ICC
ΔICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
-
-
4.0
-
-
40
-
-
80
μA
additional
per input pin;
1.35
1.5
1.5
mA
supply current VI = VCC - 2.1 V; IO = 0 A;
other pins at VCC or GND;
VCC = 4.5 V to 5.5 V
CI
input
-
3.0
10
-
10
-
10
pF
capacitance
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
6 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; For test circuit see Fig. 8.
Symbol Parameter Conditions
74AHC138
25 °C
Min Typ[1] Max
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
tpd
propagation An to Yn; see Fig. 6
[2]
[2]
[2]
delay
VCC = 3.0 V to 3.6 V
CL = 15 pF
CL = 50 pF
-
-
6.0 11.4
8.6 15.8
1.0
1.0
13.0
18.0
1.0
1.0
14.5 ns
20.0 ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
4.4
8.1
1.0
1.0
9.5
1.0
1.0
10.5 ns
13.0 ns
CL = 50 pF
6.3 10.1
11.5
E3 to Yn; see Fig. 6
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
-
5.8 12.8
8.2 16.3
1.0
1.0
15.0
18.5
1.0
1.0
16.0 ns
20.5 ns
CL = 50 pF
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
4.2
8.1
1.0
1.0
9.5
1.0
1.0
10.5 ns
13.0 ns
CL = 50 pF
6.0 10.1
11.5
E1, E2 to Yn; see Fig. 7
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
-
5.7 11.4
8.2 14.9
1.0
1.0
13.5
17.0
1.0
1.0
14.5 ns
19.0 ns
CL = 50 pF
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
-
4.2
6.0 10.1
18.0
8.1
1.0
1.0
-
9.5
11.5
-
1.0
1.0
-
10.5 ns
13.0 ns
CL = 50 pF
CPD
power
CL = 50 pF; fi = 1 MHz;
dissipation VI = GND to VCC
capacitance
[3]
[2]
-
-
pF
74AHCT138
tpd
propagation An to Yn; see Fig. 6
delay
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
4.4 10.4
6.2 11.4
1.0
1.0
12.0
13.0
1.0
1.0
13.0 ns
14.5 ns
CL = 50 pF
E3 to Yn; see Fig. 6
VCC = 4.5 V to 5.5 V
CL = 15 pF
[2]
[2]
-
-
4.3
9.1
1.0
1.0
10.5
11.5
1.0
1.0
11.5 ns
13.0 ns
CL = 50 pF
6.2 10.1
E1, E2 to Yn; see Fig. 7
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
4.3
9.6
1.0
1.0
11.0
12.0
1.0
1.0
12.0 ns
13.5 ns
CL = 50 pF
6.2 10.6
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
7 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
Symbol Parameter Conditions
25 °C
Min Typ[1] Max
23.0
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
CPD
power
CL = 50 pF; fi = 1 MHz;
[3]
-
-
-
-
-
-
pF
dissipation VI = GND to VCC
capacitance
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL
.
[3] CPD is used to determine the dynamic power dissipation (PD in μW).
PD = CPD x VCC 2 x fi x N + Σ(CL x VCC 2 x fo) where:
fi = input frequency in MHz, fo = output frequency in MHz
CL = output load capacitance in pF
VCC = supply voltage in V
N = number of inputs switching
Σ(CL x VCC 2 x fo) = sum of the outputs.
10.1. Waveforms and test circuit
V
CC
An, E3 input
GND
V
M
t
t
PLH
PHL
V
OH
Yn output
V
M
V
OL
001aah080
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig. 6. The inputs An, E3 to outputs Yn propagation delays
V
CC
E1, E2 input
GND
V
M
t
t
PHL
PLH
V
OH
V
Yn output
M
V
OL
001aah081
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig. 7. The inputs En to outputs Yn propagation delays
Table 8. Measurement points
Type
Input
VM
Output
VM
74AHC138
0.5VCC
1.5 V
0.5VCC
0.5VCC
74AHCT138
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
8 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
t
W
V
I
90 %
negative
pulse
V
V
V
M
M
10 %
0 V
t
t
r
f
t
t
f
r
V
I
90 %
positive
pulse
V
M
M
10 %
0 V
t
W
V
V
CC
CC
V
I
V
O
R
L
S1
G
open
DUT
R
T
C
L
001aad983
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig. 8. Test circuit for measuring switching times
Table 9. Test data
Type
Input
VI
Load
S1 position
tPHL, tPLH
open
tr, tf
CL
RL
tPZH, tPHZ
GND
tPZL, tPLZ
VCC
74AHC138
VCC
3.0 V
≤ 3.0 ns
≤ 3.0 ns
15 pF, 50 pF
15 pF, 50 pF
1 kΩ
1 kΩ
74AHCT138
open
GND
VCC
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
9 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
11. Package outline
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
D
E
A
X
v
c
y
H
M
A
E
Z
16
9
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
8
e
w
M
detail X
b
p
0
2.5
scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
E
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
max.
0.25
0.10
1.45
1.25
0.49
0.36
0.25
0.19
10.0
9.8
4.0
3.8
6.2
5.8
1.0
0.4
0.7
0.6
0.7
0.3
mm
1.27
0.05
1.05
0.041
1.75
0.25
0.01
0.25
0.1
0.25
0.01
8o
0o
0.0100
0.0075
0.010 0.057
0.004 0.049
0.019
0.014
0.39
0.38
0.16
0.15
0.244
0.228
0.039 0.028
0.016 0.020
0.028
0.012
inches
0.069
0.01 0.004
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT109-1
076E07
MS-012
Fig. 9. Package outline SOT109-1 (SO16)
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
10 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
D
E
A
X
c
y
H
v
M
A
E
Z
9
16
Q
(A )
3
A
2
A
A
1
pin 1 index
θ
L
p
L
1
8
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(2)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.
8o
0o
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
5.1
4.9
4.5
4.3
6.6
6.2
0.75
0.50
0.4
0.3
0.40
0.06
mm
1.1
0.65
1
0.2
0.13
0.1
0.25
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-18
SOT403-1
MO-153
Fig. 10. Package outline SOT403-1 (TSSOP16)
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
11 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
16 terminals; body 2.5 x 3.5 x 0.85 mm
SOT763-1
B
A
D
A
A
1
E
c
detail X
terminal 1
index area
C
terminal 1
index area
e
1
y
y
e
b
v
M
C
C
A
B
C
1
w
M
2
7
L
1
8
9
E
h
e
16
15
10
D
h
X
0
2.5
scale
5 mm
DIMENSIONS (mm are the original dimensions)
(1)
A
(1)
(1)
UNIT
A
1
b
c
E
h
e
e
y
D
D
E
L
v
w
y
1
1
h
max.
0.05 0.30
0.00 0.18
3.6
3.4
2.15
1.85
2.6
2.4
1.15
0.85
0.5
0.3
mm
0.05
0.1
1
0.2
0.5
2.5
0.1
0.05
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
02-10-17
03-01-27
SOT763-1
- - -
MO-241
- - -
Fig. 11. Package outline SOT763-1 (DHVQFN16)
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
12 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
12. Abbreviations
Table 10. Abbreviations
Acronym
CMOS
LSTTL
ESD
Description
Complementary Metal Oxide Semiconductor
Low-power Schottky Transistor-Transistor Logic
ElectroStatic Discharge
HBM
Human Body Model
MM
Machine Model
CDM
Charged-Device Model
TTL
Transistor-Transistor Logic
13. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
74AHC_AHCT138 v.5 20200910
Product data sheet
-
74AHC_AHCT138 v.4
Modifications:
•
The format of this data sheet has been redesigned to comply with the identity guidelines of
Nexperia.
•
•
Legal texts have been adapted to the new company name where appropriate.
Table 4: Derating values for Ptot total power dissipation have been updated.
74AHC_AHCT138 v.4 20140402
Product data sheet
-
74AHC_AHCT138 v.3
Modifications:
•
Description for tpd for the 74AHCT138 corrected (errata) in Table 7
74AHC_AHCT138 v.3 20071128
74AHC_AHCT138 v.2 19990927
74AHC_AHCT138 v.1 19900331
Product data sheet
Product specification
Product specification
-
-
-
74AHC_AHCT138 v.2
74AHC_AHCT138 v.1
-
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
13 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
injury, death or severe property or environmental damage. Nexperia and its
suppliers accept no liability for inclusion and/or use of Nexperia products in
such equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
14. Legal information
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Data sheet status
Document status Product
Definition
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
[1][2]
status [3]
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia product is suitable
and fit for the customer’s applications and products planned, as well as
for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
minimize the risks associated with their applications and products.
Preliminary [short]
data sheet
Qualification
Production
This document contains data from
the preliminary specification.
Product [short]
data sheet
This document contains the product
specification.
[1] Please consult the most recently issued document before initiating or
completing a design.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
[2] The term 'short data sheet' is explained in section "Definitions".
[3] The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
Definitions
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the relevant
full data sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of commercial sale — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement is
concluded only the terms and conditions of the respective agreement shall
apply. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Disclaimers
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy
or completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified, the
product is not suitable for automotive use. It is neither qualified nor tested in
accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of non-automotive qualified
products in automotive equipment or applications.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards,
customer (a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s own risk,
and (c) customer fully indemnifies Nexperia for any liability, damages or failed
product claims resulting from customer design and use of the product for
automotive applications beyond Nexperia’s standard warranty and Nexperia’s
product specifications.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards customer
for the products described herein shall be limited in accordance with the
Terms and conditions of commercial sale of Nexperia.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
Right to make changes — Nexperia reserves the right to make changes
to information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Trademarks
Suitability for use — Nexperia products are not designed, authorized or
warranted to be suitable for use in life support, life-critical or safety-critical
systems or equipment, nor in applications where failure or malfunction
of an Nexperia product can reasonably be expected to result in personal
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
14 / 15
Nexperia
74AHC138; 74AHCT138
3-to-8 line decoder/demultiplexer; inverting
Contents
1. General description......................................................1
2. Features and benefits.................................................. 1
3. Ordering information....................................................1
4. Functional diagram.......................................................2
5. Pinning information......................................................3
5.1. Pinning.........................................................................3
5.2. Pin description.............................................................3
6. Functional description................................................. 4
7. Limiting values............................................................. 4
8. Recommended operating conditions..........................5
9. Static characteristics....................................................5
10. Dynamic characteristics............................................ 7
10.1. Waveforms and test circuit........................................ 8
11. Package outline........................................................ 10
12. Abbreviations............................................................13
13. Revision history........................................................13
14. Legal information......................................................14
© Nexperia B.V. 2020. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 10 September 2020
©
74AHC_AHCT138
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2020. All rights reserved
Product data sheet
Rev. 5 — 10 September 2020
15 / 15
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