component
74HC4851BQ
Public Made by Adomby adom
Nexperia Analog Switches, Multiplexers, DHVQFN-16-EP(2.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown74HC4851BQ
Nexperia · Analog Switches, Multiplexers · DHVQFN-16-EP(2.5x3.5)
74HC4851BQ from Nexperia, in a DHVQFN-16-EP(2.5x3.5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Y4 | passive | Independent analog input/output channel 4, connected to Z when E is LOW and S2 = HIGH, S1 = LOW, S0 = LOW; switch voltage is specified from GND to VCC. |
| 2 | Y6 | passive | Independent analog input/output channel 6, connected to Z when E is LOW and S2 = HIGH, S1 = HIGH, S0 = LOW; switch voltage is specified from GND to VCC. |
| 3 | Z | passive | Common analog input/output that is connected to the selected Yn channel when E is LOW; switch voltage is specified from GND to VCC. |
| 4 | Y7 | passive | Independent analog input/output channel 7, connected to Z when E is LOW and S2, S1, S0 are all HIGH; switch voltage is specified from GND to VCC. |
| 5 | Y5 | passive | Independent analog input/output channel 5, connected to Z when E is LOW and S2 = HIGH, S1 = LOW, S0 = HIGH; switch voltage is specified from GND to VCC. |
| 6 | E | input | Active-LOW enable input; when HIGH all switches are in the high-impedance OFF-state regardless of S0 to S2. |
| 7 | n.c. | unconnected | Not connected. |
| 8 | GND | power_in | Ground (0 V) reference for all voltages in the datasheet. |
| 9 | S2 | input | Select input (most significant bit of channel select) for the 1-of-8 channel decoder, active only while E is LOW. |
| 10 | S1 | input | Select input (middle bit of channel select) for the 1-of-8 channel decoder, active only while E is LOW. |
| 11 | S0 | input | Select input (least significant bit of channel select) for the 1-of-8 channel decoder, active only while E is LOW. |
| 12 | Y3 | passive | Independent analog input/output channel 3, connected to Z when E is LOW and S2 = LOW, S1 = HIGH, S0 = HIGH; switch voltage is specified from GND to VCC. |
| 13 | Y0 | passive | Independent analog input/output channel 0, connected to Z when E is LOW and S2, S1, S0 are all LOW; switch voltage is specified from GND to VCC. |
| 14 | Y1 | passive | Independent analog input/output channel 1, connected to Z when E is LOW and S0 = HIGH with S2 = S1 = LOW; switch voltage is specified from GND to VCC. |
| 15 | Y2 | passive | Independent analog input/output channel 2, connected to Z when E is LOW and S1 = HIGH with S2 = S0 = LOW; switch voltage is specified from GND to VCC. |
| 16 | VCC | power_in | Supply voltage; the 74HC4851 is specified for 2.0 V to 6.0 V, and the absolute maximum is 7.0 V. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DHVQFN-16-EP(2.5x3.5) |
| Category | Interface |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| supply voltage | VCC | -0.5 | 7 | V | 5 | ||
| input voltage | VI | -0.5 | V | 5 | |||
| switch voltage | VSW | -0.5 | V | 5 | |||
| input clamping current | IIK | -20 | 20 | mA | VI < -0.5 V or VI > VCC + 0.5 V | 5 | |
| switch clamping current | ISK | -20 | 20 | mA | VSW < -0.5 V or VSW > VCC + 0.5 V | 5 | |
| switch current | ISW | -25 | 25 | mA | VSW > -0.5 V or VSW < VCC + 0.5 V | 5 | |
| supply current | ICC | 50 | mA | 5 | |||
| ground current | IGND | -50 | mA | 5 | |||
| storage temperature | Tstg | -65 | 150 | °C | 5 | ||
| total power dissipation | Ptot | 500 | mW | Tamb = -40 °C to +125 °C | 5 | ||
| supply voltage | VCC | 2 | 6 | V | 6 | ||
| input voltage | VI | 0 | V | 6 | |||
| switch voltage | VSW | 0 | V | 6 | |||
| ambient temperature | Tamb | -40 | 125 | °C | 6 | ||
| input transition rise and fall rate | Δt/ΔV | 1000 | ns/V | VCC = 2.0 V | 6 | ||
| input transition rise and fall rate | Δt/ΔV | 800 | ns/V | VCC = 3.0 V | 6 | ||
| input transition rise and fall rate | Δt/ΔV | 500 | ns/V | VCC = 4.5 V | 6 | ||
| input transition rise and fall rate | Δt/ΔV | 400 | ns/V | VCC = 6.0 V | 6 | ||
| ON resistance (peak) | RON(peak) | 400 | 700 | Ω | VI = VCC to GND; E = VIL; VCC = 2.0 V; ISW = 2 mA; Tamb = -40 °C to +125 °C | 6 | |
| ON resistance (peak) | RON(peak) | 215 | 380 | Ω | VI = VCC to GND; E = VIL; VCC = 3.0 V; ISW ≤ 2 mA; Tamb = -40 °C to +125 °C | 6 | |
| ON resistance (peak) | RON(peak) | 120 | 345 | Ω | VI = VCC to GND; E = VIL; VCC = 3.3 V; ISW ≤ 2 mA; Tamb = -40 °C to +125 °C | 6 | |
| ON resistance (peak) | RON(peak) | 76 | 270 | Ω | VI = VCC to GND; E = VIL; VCC = 4.5 V; ISW ≤ 2 mA; Tamb = -40 °C to +125 °C | 6 | |
| ON resistance (peak) | RON(peak) | 59 | 250 | Ω | VI = VCC to GND; E = VIL; VCC = 6.0 V; ISW ≤ 2 mA; Tamb = -40 °C to +125 °C | 6 | |
| output voltage variation | ΔVO | 0.05 | 1 | mV | /ISW/ ≤ 1 mA; RS ≤ 3.9 kΩ; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.03 | 1 | mV | /ISW/ ≤ 1 mA; RS ≤ 3.9 kΩ; VCC = 5.0 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.55 | 5 | mV | /ISW/ ≤ 10 mA; RS ≤ 3.9 kΩ; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.27 | 5 | mV | /ISW/ ≤ 10 mA; RS ≤ 3.9 kΩ; VCC = 5.0 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.04 | 2 | mV | /ISW/ ≤ 1 mA; RS ≤ 20 kΩ; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.03 | 2 | mV | /ISW/ ≤ 1 mA; RS ≤ 20 kΩ; VCC = 5.0 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.56 | 20 | mV | /ISW/ ≤ 10 mA; RS ≤ 20 kΩ; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 7 | |
| output voltage variation | ΔVO | 0.48 | 20 | mV | /ISW/ ≤ 10 mA; RS ≤ 20 kΩ; VCC = 5.0 V; Tamb = -40 °C to +125 °C | 7 | |
| HIGH-level input voltage | VIH | 1.5 | V | control inputs; VCC = 2.0 V | 7 | ||
| HIGH-level input voltage | VIH | 2.1 | V | control inputs; VCC = 3.0 V | 7 | ||
| HIGH-level input voltage | VIH | 2.3 | V | control inputs; VCC = 3.3 V | 7 | ||
| HIGH-level input voltage | VIH | 3.15 | V | control inputs; VCC = 4.5 V | 7 | ||
| HIGH-level input voltage | VIH | 4.2 | V | control inputs; VCC = 6.0 V | 7 | ||
| LOW-level input voltage | VIL | 0.5 | V | control inputs; VCC = 2.0 V | 7 | ||
| LOW-level input voltage | VIL | 0.9 | V | control inputs; VCC = 3.0 V | 7 | ||
| LOW-level input voltage | VIL | 1 | V | control inputs; VCC = 3.3 V | 7 | ||
| LOW-level input voltage | VIL | 1.35 | V | control inputs; VCC = 4.5 V | 7 | ||
| LOW-level input voltage | VIL | 1.8 | V | control inputs; VCC = 6.0 V | 7 | ||
| input leakage current | II | -1 | 1 | µA | control inputs; VI = GND or VCC; VCC = 6.0 V; Tamb = -40 °C to +125 °C | 8 | |
| input leakage current (per channel) | II | -1 | 1 | µA | E = VIH; VI = GND or VCC; VO = VCC or GND; VCC = 6.0 V; see Fig. 4; per channel; Tamb = -40 °C to +125 °C | 8 | |
| OFF-state leakage current | IS(OFF) | -4 | 4 | µA | all channels; Tamb = -40 °C to +125 °C | 8 | |
| ON-state leakage current | IS(ON) | -1 | 1 | µA | E = VIL; VI = GND or VCC; VO = VCC or GND; VCC = 6.0 V; see Fig. 5; Tamb = -40 °C to +125 °C | 8 | |
| supply current | ICC | 2 | 20 | µA | VI = GND or VCC; VCC = 6.0 V; Tamb = -40 °C to +125 °C | 8 | |
| input capacitance | CI | 2 | 10 | pF | S0, S1, S2 and E | 8 | |
| switch capacitance Z | Csw | 15 | 40 | pF | switch Z; OFF-state | 8 | |
| switch capacitance Yn | Csw | 3 | 15 | pF | Yn; OFF-state | 8 | |
| propagation delay | tpd | 10 | 32 | ns | Z to Yn, Yn to Z; see Fig. 8; VCC = 2.0 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 6 | 19.5 | ns | Z to Yn, Yn to Z; see Fig. 8; VCC = 3.0 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 5 | 18.5 | ns | Z to Yn, Yn to Z; see Fig. 8; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 4 | 13.5 | ns | Z to Yn, Yn to Z; see Fig. 8; VCC = 4.5 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 3 | 12 | ns | Z to Yn, Yn to Z; see Fig. 8; VCC = 6.0 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 18 | 40 | ns | Sn to Z, Sn to Yn; see Fig. 9; VCC = 2.0 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 9.5 | 23 | ns | Sn to Z, Sn to Yn; see Fig. 9; VCC = 3.0 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 8.5 | 22 | ns | Sn to Z, Sn to Yn; see Fig. 9; VCC = 3.3 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 6.5 | 17 | ns | Sn to Z, Sn to Yn; see Fig. 9; VCC = 4.5 V; Tamb = -40 °C to +125 °C | 10 | |
| propagation delay | tpd | 5 | 16.5 | ns | Sn to Z, Sn to Yn; see Fig. 9; VCC = 6.0 V; Tamb = -40 °C to +125 °C | 10 |
CAD (KiCad official)
- Symbol:
74HC4851BQ - Footprint:
Package_DFN_QFN:DHVQFN-16-1EP_2.5x3.5mm_P0.5mm_EP1x2mm - 3D model: DHVQFN-16-EP(2.5x3.5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
74hc4851bq-etched.step/74hc4851bq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hc4851bq.step/74hc4851bq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (19 pp, sha256
244b13d1b9d615b4, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).