74HCT139DB NRND

Dual 2-to-4 line decoder/demultiplexer

The 74HC139; 74HCT139 decodes two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3). Each decoder features an enable input (nE). When nE is HIGH all outputs are forced HIGH. The enable input can be used as the data input for a 1-to-4 demultiplexer application. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Not recommended for new designs (NRND).

Features

  • Input levels:
    • For 74HC139: CMOS level
    • For 74HCT139: TTL level
  • Demultiplexing capability
  • 2 independent 2-to-4 decoders
  • Multifunction capability
  • Suitable for memory decoding, data routing or code conversion
  • Complies with JEDEC standard no. 7A
  • Active LOW mutually exclusive outputs
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from ‑40 °C to +85 °C and from ‑40 °C to +125 °C

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74HCT139DB
NRND
Not for design in4.5 - 5.5TTL+/- 416low-40~12514842.0SSOP16

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HCT139DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT13974HCT139DB,118
( 9351 885 50118 )
Bulk PackActiveHCT13974HCT139DB,112
( 9351 885 50112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
74HCT139DB
NRND
74HCT139DB,11874HCT139DBweek 12, 200511
74HCT139DB
NRND
74HCT139DB,11274HCT139DBweek 12, 200511
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
74HC_HCT139Dual 2-to-4 line decoder/demultiplexerData sheet2017-03-30
AN11044Pin FMEA 74HC/74HCT familyApplication note2011-03-16
AN252Live Insertion Aspects of Philips Logic FamiliesApplication note2013-03-13
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT338-1plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyOutline drawing2018-10-18

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