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74HC4851; 74HCT4851

8-channel analog multiplexer/demultiplexer with injection-current effect control

The 74HC4851; 74HCT4851 are high-speed Si-gate CMOS devices and are specified in compliance with JEDEC standard no. 7A.

The 74HC4851; 74HCT4851 are 8-channel analog multiplexers/demultiplexers with three digital select inputs (S0 to S2), an active-LOW enable input (E), eight independent inputs/outputs (Y0 to Y7) and a common input/output (Z). The devices feature injection-current effect control, which has excellent value in automotive applications where voltages in excess of the supply voltage are common.

With E LOW, one of the eight switches is selected (low impedance ON-state) by S0 to S2. With E HIGH, all switches are in the high-impedance OFF-state, independent of S0 to S2.

The injection-current effect control allows signals at disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel. This eliminates the need for external diode/resistor networks typically used to keep the analog channel signals within the supply-voltage range.

Features and benefits

  • Injection-current cross coupling < 1 mV/mA

  • Wide supply voltage range from 2.0 V to 6.0 V for 74HC4851

  • ESD protection:

    • HBM JESD22-A114E exceeds 2000 V

    • CDM JESD22-C101C exceeds 1000 V

  • Latch-up performance exceeds 100 mA per JESD 78 Class II level A

  • Low ON-state resistance:

    • 400 Ω (typical) at VCC = 2.0 V

    • 215 Ω (typical) at VCC = 3.0 V

    • 120 Ω (typical) at VCC = 3.3 V

    • 76 Ω (typical) at VCC = 4.5 V

    • 59 Ω (typical) at VCC = 6.0 V

Applications

  • Analog multiplexing and demultiplexing

  • Digital multiplexing and demultiplexing

  • Signal gating

Parametrics

Type numberProduct statusConfigurationVCC (V)Logic switching levelsRON (Ω)RON(FLAT) (Ω)f(-3dB) (MHz)THD (%)Xtalk (dB)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC4851BQProductionSP8T-Z2.0 - 10.0CMOS220----very low-40~125804.948DHVQFN16
74HC4851DProductionSP8T-Z2.0 - 10.0CMOS220----very low-40~125803.938SO16
74HC4851PWProductionSP8T-Z2.0 - 10.0CMOS220----very low-40~1251121.740.5TSSOP16
74HCT4851BQProductionSP8T-Z4.5 - 5.5TTL240----very low-40~125804.747DHVQFN16
74HCT4851DProductionSP8T-Z4.5 - 5.5TTL240----very low-40~125793.837.7SO16
74HCT4851PWProductionSP8T-Z4.5 - 5.5TTL240----very low-40~1251121.640.2TSSOP16

(-) dash denotes: "Parameter value not specified for this product"

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC4851BQ
DHVQFN16
(SOT763-1) 		SOT763-1SOT763-1_115ActiveHC485174HC4851BQ,115
( 9352 820 86115 )
74HC4851D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HC4851D74HC4851D,118
( 9352 820 83118 )
74HC4851PW
TSSOP16
(SOT403-1) 		SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHC485174HC4851PW,118
( 9352 820 84118 )
74HCT4851BQ
DHVQFN16
(SOT763-1) 		SOT763-1SOT763-1_115ActiveHT485174HCT4851BQ,115
( 9352 857 32115 )
74HCT4851D
SO16
(SOT109-1) 		SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HCT4851D74HCT4851D,118
( 9352 857 29118 )
74HCT4851PW
TSSOP16
(SOT403-1) 		SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHCT485174HCT4851PW,118
( 9352 857 31118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC4851D9352820831122021-12-312022-06-3074HC4851D
    74HC4851PW9352820841122018-12-312019-06-3074HC4851PW
      74HCT4851D9352857291122018-12-312019-06-3074HCT4851D
        74HCT4851PW9352857311122021-12-312022-06-3074HCT4851PW

          Environmental information

          Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
          74HC4851BQ74HC4851BQ,11574HC4851BQAlways Pb-free
          74HC4851D74HC4851D,11874HC4851DAlways Pb-free
          74HC4851PW74HC4851PW,11874HC4851PWAlways Pb-free
          74HCT4851BQ74HCT4851BQ,11574HCT4851BQAlways Pb-free
          74HCT4851D74HCT4851D,11874HCT4851DAlways Pb-free
          74HCT4851PW74HCT4851PW,11874HCT4851PWAlways Pb-free
          Quality and reliability disclaimer

          Documentation (11)

          File nameTitleTypeDate
          74HC_HCT48518-channel analog multiplexer/demultiplexer with injection-current effect controlData sheet2023-05-15
          AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
          hc485174HC4851 IBIS modelIBIS model2018-09-12
          HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
          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

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          Models

          File nameTitleTypeDate
          hc485174HC4851 IBIS modelIBIS model2018-09-12

          Ordering, pricing & availability

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