Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

74HCT251DB

8-input multiplexer; 3-state

The 74HC251; 74HCT251 is an 8-bit multiplexer with eight binary inputs (I0 to I7), three select inputs (S0 to S2) and an output enable input (OE). The select inputs select one of the eight binary inputs and route it to the complementary outputs (Y and Y). A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

This product has been discontinued

Alternatives

Features and benefits

  • Wide supply voltage range from 2.0 V to 6.0 V

  • CMOS low power dissipation

  • High noise immunity

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

  • Complies with JEDEC standards:

    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)

  • Input levels:

    • For 74HC251: CMOS level

    • For 74HCT251: TTL level

  • Non-inverting data path

  • ESD protection:

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

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

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

Parametrics

Type number Package name
74HCT251DB SSOP16

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74HCT251DB 74HCT251DB,112
(935188640112)		 Obsolete HCT251 SOT338-1
SSOP16
(SOT338-1) 		SOT338-1 SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Not available
74HCT251DB,118
(935188640118)		 Obsolete HCT251 Not available

Environmental information

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
74HCT251DB 74HCT251DB,112 74HCT251DB rohs rhf rhf
74HCT251DB 74HCT251DB,118 74HCT251DB rohs rhf rhf
Quality and reliability disclaimer

Series

Documentation (8)

File name Title Type Date
74HC_HCT251 8-input multiplexer; 3-state Data sheet 2024-03-14
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SSOP16_SOT338-1_mk plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body Marcom graphics 2017-01-28
SOT338-1 plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body Package information 2022-06-20
SSOP-TSSOP-VSO-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
SSOP-TSSOP-VSO-WAVE Footprint for wave soldering Wave soldering 2009-10-08

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Models

No documents available

PCB Symbol, Footprint and 3D Model

Model Name Description

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet