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74HCT4851BQ

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.

Alternatives

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT4851BQ 74HCT4851BQ,115 935285732115 SOT763-1 Order product

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
74HCT4851BQProductionSP8T-Z4.5 - 5.5TTL240----very low-40~125804.747DHVQFN16

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

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HCT4851BQ74HCT4851BQ,115
( 9352 857 32115 ) 		ActiveHT4851
DHVQFN16
(SOT763-1) 		SOT763-1Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HCT4851BQ74HCT4851BQ,11574HCT4851BQ29.90.91.11E911
Quality and reliability disclaimer

Series

Documentation (3)

File nameTitleTypeDate
74HC_HCT48518-channel analog multiplexer/demultiplexer with injection-current effect controlData sheet2018-08-24
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT4851BQ74HCT4851BQ,115935285732115Reel 7” Q1/T1 or Q2/T3Order product

Sample

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