74AHC138BQ,115 - NEXPERIA - Datasheet.Support

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

PackageType number

Temperature range Name Description Version

74AHC138D

74AHCT138D

-40 °C to +125 °C SO16 plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

74AHC138PW

74AHCT138PW

-40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

74AHC138BQ

74AHCT138BQ

-40 °C to +125 °C 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

SOT763-1

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

4. Functional diagram

Y7 7

15A0

A23

mna370

Fig. 1. Logic symbol

mna371

X/Y 15

(a) (b)

Fig. 2. IEC logic symbol

mna372

ENABLE

EXITING

Y7 7

3-to-8

DECODER

Fig. 3. Functional diagram

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

A0 VCC

A1 Y0

A2 Y1

E1 Y2

E2 Y3

E3 Y4

Y7 Y5

GND Y6

aaa-032319

Fig. 4. Pin configuration SOT109-1 (SO16) and

SOT403-1 (TSSOP16)

aaa-032320

74AHC138

74AHCT138

GND(1)

Y7 Y5

E3 Y4

E2 Y3

E1 Y2

A2 Y1

A1 Y0

GND

Transparent top view

7 10

6 11

5 12

4 13

3 14

2 15

terminal 1

index area

(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.

Fig. 5. Pin configuration SOT763-1 (DHVQFN16)

5.2. Pin description

Table 2. Pin description

Symbol Pin Description

A0 1 address input

A1 2 address input

A2 3 address input

E1 4 enable input (active LOW)

E2 5 enable input (active LOW)

E3 6 enable input (active HIGH)

GND 8 ground (0 V)

Y0 to Y7 15, 14, 13, 12, 11, 10, 9, 7 output

VCC 16 supply voltage

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 E2 E3 A0 A1 A2 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7

HXXXXXHHHHHHHH

XHXXXXHHHHHHHH

X X L X X X H H H H H H H H

L L H L L L L H H H H H H H

L L HHL L HL HHHHHH

L L HL HL HHL HHHHH

L L HHHL HHHL HHHH

L L HL L HHHHHL HHH

L L HHL HHHHHHL HH

L L HL HHHHHHHHL H

L L HHHHHHHHHHHL

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 Parameter Conditions Min Max Unit

VCC supply voltage -0.5 +7.0 V

VIinput voltage -0.5 +7.0 V

IIK input clamping current VI < -0.5 V [1] -20 - mA

IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V [1] - ±20 mA

IOoutput current VO = -0.5 V to (VCC + 0.5 V) - ±25 mA

ICC supply current - 75 mA

IGND ground current -75 - mA

Tstg storage temperature -65 +150 °C

Ptot total power dissipation Tamb = -40 °C to +125 °C [2] - 500 mW

[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.

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).

74AHC138 74AHCT138Symbol Parameter Conditions

Min Typ Max Min Typ Max

Unit

VCC supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 V

VIinput voltage 0 - 5.5 0 - 5.5 V

VOoutput voltage 0 - VCC 0 - VCC V

Tamb ambient temperature -40 +25 +125 -40 +25 +125 °C

VCC = 3.3 V ± 0.3 V - - 100 - - - ns/VΔt/ΔV input transition rise and

fall rate VCC = 5.0 V ± 0.5 V - - 20 - - 20 ns/V

9. Static characteristics

Table 6. Static characteristics

Voltages are referenced to GND (ground = 0 V).

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

74AHC138

VCC = 2.0 V 1.5 - - 1.5 - 1.5 - V

VCC = 3.0 V 2.1 - - 2.1 - 2.1 - V

VIH HIGH-level

input voltage

VCC = 5.5 V 3.85 - - 3.85 - 3.85 - V

VCC = 2.0 V - - 0.5 - 0.5 - 0.5 V

VCC = 3.0 V - - 0.9 - 0.9 - 0.9 V

VIL LOW-level

input voltage

VCC = 5.5 V - - 1.65 - 1.65 - 1.65 V

VI = VIH or VIL

IO = -50 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V

IO = -50 μA; VCC = 3.0 V 2.9 3.0 - 2.9 - 2.9 - V

IO = -50 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V

IO = -4.0 mA; VCC = 3.0 V 2.58 - - 2.48 - 2.4 - V

VOH HIGH-level

output voltage

IO = -8.0 mA; VCC = 4.5 V 3.94 - - 3.8 - 3.7 - V

VI = VIH or VIL

IO = 50 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V

IO = 50 μA; VCC = 3.0 V - 0 0.1 - 0.1 - 0.1 V

IO = 50 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V

IO = 4.0 mA; VCC = 3.0 V - - 0.36 - 0.44 - 0.55 V

VOL LOW-level

output voltage

IO = 8.0 mA; VCC = 4.5 V - - 0.36 - 0.44 - 0.55 V

IIinput leakage

current

VI = 5.5 V or GND;

VCC = 0 V or 5.5 V

- - 0.1 - 1.0 - 2.0 μA

ICC supply current VI = VCC or GND; IO = 0 A;

VCC = 5.5 V

- - 4.0 - 40 - 80 μA

CIinput

capacitance

- 3.0 10 - 10 - 10 pF

Product data sheet Rev. 5 — 10 September 2020 5 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

74AHCT138

VIH HIGH-level

input voltage

VCC = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V

VIL LOW-level

input voltage

VCC = 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V

VI = VIH or VIL; VCC = 4.5 V

IO = -50 μA 4.4 4.5 - 4.4 - 4.4 - V

VOH HIGH-level

output voltage

IO = -8.0 mA 3.94 - - 3.8 - 3.7 - V

VI = VIH or VIL; VCC = 4.5 V

IO = 50 μA - 0 0.1 - 0.1 - 0.1 V

VOL LOW-level

output voltage

IO = 8.0 mA - - 0.36 - 0.44 - 0.55 V

IIinput leakage

current

VI = 5.5 V or GND;

VCC = 0 V or 5.5 V

- - 0.1 - 1.0 - 2.0 μA

ICC supply current VI = VCC or GND; IO = 0 A;

VCC = 5.5 V

- - 4.0 - 40 - 80 μA

ΔICC additional

supply current

per input pin;

VI = VCC - 2.1 V; IO = 0 A;

other pins at VCC or GND;

VCC = 4.5 V to 5.5 V

- - 1.35 - 1.5 - 1.5 mA

CIinput

capacitance

- 3.0 10 - 10 - 10 pF

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.

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ[1] Max Min Max Min Max

Unit

74AHC138

An to Yn; see Fig. 6 [2]

VCC = 3.0 V to 3.6 V

CL = 15 pF - 6.0 11.4 1.0 13.0 1.0 14.5 ns

CL = 50 pF - 8.6 15.8 1.0 18.0 1.0 20.0 ns

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.4 8.1 1.0 9.5 1.0 10.5 ns

CL = 50 pF - 6.3 10.1 1.0 11.5 1.0 13.0 ns

E3 to Yn; see Fig. 6 [2]

VCC = 3.0 V to 3.6 V

CL = 15 pF - 5.8 12.8 1.0 15.0 1.0 16.0 ns

CL = 50 pF - 8.2 16.3 1.0 18.5 1.0 20.5 ns

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.2 8.1 1.0 9.5 1.0 10.5 ns

CL = 50 pF - 6.0 10.1 1.0 11.5 1.0 13.0 ns

E1, E2 to Yn; see Fig. 7 [2]

VCC = 3.0 V to 3.6 V

CL = 15 pF - 5.7 11.4 1.0 13.5 1.0 14.5 ns

CL = 50 pF - 8.2 14.9 1.0 17.0 1.0 19.0 ns

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.2 8.1 1.0 9.5 1.0 10.5 ns

tpd propagation

delay

CL = 50 pF - 6.0 10.1 1.0 11.5 1.0 13.0 ns

CPD power

dissipation

capacitance

CL = 50 pF; fi = 1 MHz;

VI = GND to VCC

[3] - 18.0 - - - - - pF

74AHCT138

An to Yn; see Fig. 6 [2]

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.4 10.4 1.0 12.0 1.0 13.0 ns

CL = 50 pF - 6.2 11.4 1.0 13.0 1.0 14.5 ns

E3 to Yn; see Fig. 6 [2]

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.3 9.1 1.0 10.5 1.0 11.5 ns

CL = 50 pF - 6.2 10.1 1.0 11.5 1.0 13.0 ns

E1, E2 to Yn; see Fig. 7 [2]

VCC = 4.5 V to 5.5 V

CL = 15 pF - 4.3 9.6 1.0 11.0 1.0 12.0 ns

tpd propagation

delay

CL = 50 pF - 6.2 10.6 1.0 12.0 1.0 13.5 ns

Product data sheet Rev. 5 — 10 September 2020 7 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ[1] Max Min Max Min Max

Unit

CPD power

dissipation

capacitance

CL = 50 pF; fi = 1 MHz;

VI = GND to VCC

[3] - 23.0 - - - - - pF

[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

001aah080

Yn output

VOH

VOL

VCC

GND

An, E3 input VM

tPHL tPLH

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

001aah081

tPLH

tPHL

Yn output

E1, E2 input

VCC

GND

VOH

VOL

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

Input OutputType

VMVM

74AHC138 0.5VCC 0.5VCC

74AHCT138 1.5 V 0.5VCC

Product data sheet Rev. 5 — 10 September 2020 8 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

VMVM

10 %

90 %

0 V

negative

pulse

positive

pulse

0 V

VMVM

90 %

10 %

001aad983

DUT

VCC VCC

VIVO

RLS1

open

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

Input Load S1 positionType

VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ

74AHC138 VCC ≤ 3.0 ns 15 pF, 50 pF 1 kΩ open GND VCC

74AHCT138 3.0 V ≤ 3.0 ns 15 pF, 50 pF 1 kΩ open GND VCC

Product data sheet Rev. 5 — 10 September 2020 9 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

11. Package outline

w M

detail X

v M A

(A )

pin 1 index

UNIT A

max. A

1 A

2 A

3 b

p c D

(1) E

(1) (1)

e H

E L L

p Q Z y w v θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

inches

1.75 0.25

0.10

1.45

1.25 0.25 0.49

0.36

0.25

0.19

10.0

9.8

4.0

3.8 1.27 6.2

5.8

0.7

0.6

0.7

0.3 8

0.25 0.1

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

Note

1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.

1.0

0.4

SOT109-1 99-12-27

03-02-19

076E07 MS-012

0.069 0.010

0.004

0.057

0.049 0.01 0.019

0.014

0.0100

0.0075

0.39

0.38

0.16

0.15 0.05

1.05

0.041

0.244

0.228

0.028

0.020

0.028

0.012

0.01

0.25

0.01 0.004

0.039

0.016

0 2.5 5 mm

scale

SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

Fig. 9. Package outline SOT109-1 (SO16)

Product data sheet Rev. 5 — 10 September 2020 10 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

UNIT A

1 A

2 A

3 b

p c D

(1) E (2) (1)

e H

E L L

p Q Z y w v θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 0.15

0.05

0.95

0.80

0.30

0.19

0.2

0.1

5.1

4.9

4.5

4.3 0.65 6.6

6.2

0.4

0.3

0.40

0.06

0.13 0.1 0.2 1

DIMENSIONS (mm are the original dimensions)

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.

0.75

0.50

SOT403-1 MO-153 99-12-27

03-02-18

w M

0.25

1 8

16 9

detail X

(A )

v M A

0 2.5 5 mm

scale

TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1

max.

1.1

pin 1 index

Fig. 10. Package outline SOT403-1 (TSSOP16)

Product data sheet Rev. 5 — 10 September 2020 11 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

terminal 1

index area

0.5 1

A1 Eh

UNIT y e

0.2

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 3.6

3.4

2.15

1.85

2.6

2.4

1.15

0.85

2.5

0.30

0.18

0.05

0.00 0.05 0.1

DIMENSIONS (mm are the original dimensions)

SOT763-1 MO-241 - - - - - -

0.5

0.3

0.1

0.05

0 2.5 5 mm

scale

SOT763-1

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

A(1)

max.

detail X

y1 C

2 7

15 10

B A

terminal 1

index area

A C

v M

w M

(1)

Note

1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.

(1)

02-10-17

03-01-27

Fig. 11. Package outline SOT763-1 (DHVQFN16)

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 Description

CMOS Complementary Metal Oxide Semiconductor

LSTTL Low-power Schottky Transistor-Transistor Logic

ESD 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 Product data sheet - 74AHC_AHCT138 v.2

74AHC_AHCT138 v.2 19990927 Product specification - 74AHC_AHCT138 v.1

74AHC_AHCT138 v.1 19900331 Product specification - -

Product data sheet Rev. 5 — 10 September 2020 13 / 15

Nexperia 74AHC138; 74AHCT138

3-to-8 line decoder/demultiplexer; inverting

14. Legal information

Data sheet status

Document status

[1][2]

Product

status [3]

Definition

Objective [short]

data sheet

Development This document contains data from

the objective specification for

product development.

Preliminary [short]

data sheet

Qualification This document contains data from

the preliminary specification.

Product [short]

data sheet

Production This document contains the product

specification.

[1] Please consult the most recently issued document before initiating or

completing a design.

[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.

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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.

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.

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.

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.

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 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.

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.

Trademarks

Notice: All referenced brands, product names, service names and

trademarks are the property of their respective owners.

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

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

Product data sheet Rev. 5 — 10 September 2020 15 / 15