×

74HC138-Q100; 74HCT138-Q100

3-to-8 line decoder/demultiplexer; inverting

The 74HC138-Q100; 74HCT138-Q100 decodes three binary weighted address inputs (A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1, E2 and E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion to a 1-of-32 (5 to 32 lines) decoder with just four '138 ICs and one inverter. The '138 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. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)

    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

  • Wide supply voltage range from 2.0 to 6.0 V

  • CMOS low power dissipation

  • High noise immunity

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

  • Demultiplexing capability

  • Multiple input enable for easy expansion

  • Ideal for memory chip select decoding

  • Active LOW mutually exclusive outputs

  • Input levels:

    • For 74HC138-Q100: CMOS level

    • For 74HCT138-Q100: TTL level

  • Complies with JEDEC standards:

    • JESD8C (2.7 V to 3.6 V)

    • JESD7A (2.0 V to 6.0 V)

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Multiple package options

  • DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC138BQ-Q100Production2.0 - 6.0CMOS± 5.212low-40~1259314.363DHVQFN16
74HC138D-Q100Production2.0 - 6.0CMOS± 5.212low-40~1259310.053SO16
74HC138PW-Q100Production2.0 - 6.0CMOS± 5.212low-40~1251254.755.5TSSOP16
74HCT138BQ-Q100Production4.5 - 5.5TTL± 419low-40~1259314.363DHVQFN16
74HCT138D-Q100Production4.5 - 5.5TTL± 419low-40~1259310.053SO16
74HCT138PW-Q100Production4.5 - 5.5TTL± 419low-40~1251254.755.5TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC138BQ-Q100
DHVQFN16
(SOT763-1)
SOT763-1SOT763-1_115ActiveHC13874HC138BQ-Q100,115
( 9352 987 42115 )
74HC138D-Q100
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HC138D74HC138D-Q100,118
( 9352 987 43118 )
74HC138PW-Q100
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHC13874HC138PW-Q100,118
( 9352 987 44118 )
74HCT138BQ-Q100
DHVQFN16
(SOT763-1)
SOT763-1SOT763-1_115ActiveHCT13874HCT138BQ-Q100,11
( 9352 987 45115 )
74HCT138D-Q100
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HCT138D74HCT138D-Q100,118
( 9352 987 46118 )
74HCT138PW-Q100
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHCT13874HCT138PW-Q100,11
( 9352 987 47118 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
74HC138BQ-Q10074HC138BQ-Q100,11574HC138BQ-Q100Always Pb-free
74HC138D-Q10074HC138D-Q100,11874HC138D-Q100Always Pb-free
74HC138PW-Q10074HC138PW-Q100,11874HC138PW-Q100Always Pb-free
74HCT138BQ-Q10074HCT138BQ-Q100,1174HCT138BQ-Q100Always Pb-free
74HCT138D-Q10074HCT138D-Q100,11874HCT138D-Q100Always Pb-free
74HCT138PW-Q10074HCT138PW-Q100,1174HCT138PW-Q100Always Pb-free
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
74HC_HCT138_Q1003-to-8 line decoder/demultiplexer; invertingData sheet2024-02-26
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyPackage information2023-05-11
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.