component

CD74HC4066

Public Made by Adom

by adom

TI quad bilateral (analog) switch, SOIC-14. Four SPST switches, low on-resistance, 2-6 V. Datasheet-verified.

componentanalog-switchbilateral-switchtransmission-gate4066soic-14texas-instruments
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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docs cd74hc4066: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
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CD74HC4066

Texas Instruments · Quad bilateral analog switch · SOIC-14

Four independent bilateral (analog) switches in a SOIC-14, the CMOS-logic sibling of the classic CD4066. Each switch is a transmission gate that passes a signal in either direction when its control pin is high and blocks it when low, with a low on-resistance and no fixed input/output distinction. Because it passes analog as well as digital signals, it routes audio, sensor, and reference voltages, builds simple multiplexers and sample-and-hold front ends, and gates control signals. Keep signals within the supply rails. Runs 2-6 V. This page ships the KiCad CD4066 symbol, which is pin-identical.

Pinout

Pin Name Type Function
1 1Y bidirectional Switch 1 analog I/O terminal (Y side). Bidirectional analog signal path connected internally to 1Z when 1E is high. Handles analog voltages between GND and Vcc.
2 1Z bidirectional Switch 1 analog I/O terminal (Z side). Bidirectional analog signal path connected internally to 1Y when 1E is high.
3 2Z bidirectional Switch 2 analog I/O terminal (Z side). Bidirectional analog signal path connected internally to 2Y when 2E is high.
4 2Y bidirectional Switch 2 analog I/O terminal (Y side). Bidirectional analog signal path connected internally to 2Z when 2E is high.
5 2E input Switch 2 enable/control input. High level (>= VIH) closes the switch between 2Y and 2Z; low level opens it. CMOS logic input referenced to VCC/GND.
6 3E input Switch 3 enable/control input. High level (>= VIH) closes the switch between 3Y and 3Z; low level opens it. CMOS logic input referenced to VCC/GND.
7 GND power_in Ground reference (0 V). Return current path for the device supply and lower bound of the recommended analog signal range.
8 3Y bidirectional Switch 3 analog I/O terminal (Y side). Bidirectional analog signal path connected internally to 3Z when 3E is high.
9 3Z bidirectional Switch 3 analog I/O terminal (Z side). Bidirectional analog signal path connected internally to 3Y when 3E is high.
10 4Z bidirectional Switch 4 analog I/O terminal (Z side). Bidirectional analog signal path connected internally to 4Y when 4E is high.
11 4Y bidirectional Switch 4 analog I/O terminal (Y side). Bidirectional analog signal path connected internally to 4Z when 4E is high.
12 4E input Switch 4 enable/control input. High level (>= VIH) closes the switch between 4Y and 4Z; low level opens it. CMOS logic input referenced to VCC/GND.
13 1E input Switch 1 enable/control input. High level (>= VIH) closes the switch between 1Y and 1Z; low level opens it. CMOS logic input referenced to VCC/GND.
14 VCC power_in Positive supply. 2 V to 10 V for HC types; 4.5 V to 5.5 V for HCT type. Sets the upper bound for analog signal swing and the CMOS logic-input thresholds on the E pins.

Key specifications

Parameter Value
Type Quad bilateral analog switch
Switches 4 independent SPST (bidirectional)
Control one enable per switch (active-high)
On-resistance ~50 Ω typ at 4.5 V
Signal range rail to rail
Supply voltage 2-6 V
Common uses analog mux, routing, sample-hold
Package SOIC-14

Ordering variants

Same part, different packaging or reel option.

  • CD74HC4066M (SOIC-14, tube)
  • CD74HC4066M96 (SOIC-14, tape & reel)

CAD (KiCad official)

  • Symbol: Analog_Switch:CD4066BE (pin-compatible with CD74HC4066)
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D)
  • 3D model files: cd74hc4066-etched.step / cd74hc4066-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cd74hc4066.step / cd74hc4066.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (25 pp, sha256 3d3eafb15fb8109c, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF