Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state

The 74LVC257A is a quad 2-input multiplexer with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (pin S). The data inputs from source 0 (pins 1I0 to 4I0) are selected when pin S is LOW and the data inputs from source 1 (pins 1I1 to 4I1) are selected when pin S is HIGH. Data appears at the outputs (pins 1Y to 4Y) in true (non-inverting) form from the selected inputs. The device is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to pin S. The outputs are forced to a high-impedance OFF-state when pin OE is HIGH.

Inputs can be driven from either 3.3 V or 5.0 V devices. When disabled, up to 5.5 V can be applied to the outputs. These features allow the use of these devices as translators in mixed 3.3 V and 5 V applications.

Features and benefits

  • 5 V tolerant inputs/outputs, for interfacing with 5 V logic
  • Wide supply voltage range from 1.2 V to 3.6 V
  • CMOS low-power consumption
  • Direct interface with TTL levels
  • Output drive capability 50 Ω transmission lines at 85 °C
  • Complies with JEDEC standard:
    • JESD8-7A (1.65 V to 1.95 V)
    • JESD8-5A (2.3 V to 2.7 V)
    • JESD8-C/JESD36 (2.7 V to 3.6 V)
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115B exceeds 200 V
    • CDM JESD22-C101E exceeds 1000 V
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C


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
74LVC257ABQProduction1.2 - 3.6CMOS/LVTTL± 242.4low-40~1259313.862DHVQFN16
74LVC257ADProduction1.2 - 3.6CMOS/LVTTL± 242.4low-40~125929.651.5SO16
Not for design inSSOP16
74LVC257APWProduction1.2 - 3.6CMOS/LVTTL± 242.4low-40~1251254.654.6TSSOP16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveVC257A74LVC257ABQ,115
( 9352 751 74115 )
Reel 13" Q1/T1Active74LVC257AD74LVC257AD,118
( 9352 606 78118 )
Bulk PackActive74LVC257AD74LVC257AD,112
( 9352 606 78112 )

Reel 13" Q1/T1ActiveVC257A74LVC257ADB,118
( 9352 606 79118 )
Bulk PackActiveVC257A74LVC257ADB,112
( 9352 606 79112 )
Reel 13" Q1/T1ActiveLVC257A74LVC257APW,118
( 9352 606 80118 )
Bulk PackActiveLVC257A74LVC257APW,112
( 9352 606 80112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74LVC257ABQ74LVC257ABQ,11574LVC257ABQAlways Pb-free123.83.872.58E811
74LVC257AD74LVC257AD,11874LVC257ADweek 35, 2004123.83.872.58E811
74LVC257AD74LVC257AD,11274LVC257ADweek 35, 2004123.83.872.58E811
74LVC257ADB,11874LVC257ADBweek 12, 200511
74LVC257ADB,11274LVC257ADBweek 12, 200511
74LVC257APW74LVC257APW,11874LVC257APWweek 10, 2005123.83.872.58E811
74LVC257APW74LVC257APW,11274LVC257APWweek 10, 2005123.83.872.58E811
Quality and reliability disclaimer

Documentation (15)

File nameTitleTypeDate
74LVC257AQuad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-stateData sheet2020-06-26
AN11009Pin FMEA for LVC familyApplication note2019-01-09
lvc257alvc257a IBIS modelIBIS model2013-04-07
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
Nexperia_Selection_guide_2021Nexperia Selection Guide 2021Selection guide2021-01-08
lvclvc Spice modelSPICE model2013-05-06
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 information2020-04-21
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave 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 bodyPackage information2020-04-21


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.


File nameTitleTypeDate
lvc257alvc257a IBIS modelIBIS model2013-04-07
lvclvc Spice modelSPICE model2013-05-06

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