74HC4052LQ

@@ -0,0 +1,61 @@+# 74HC4052LQ++**HGSEMI** · Analog Switches, Multiplexers · QFN-16(3x3)++74HC4052LQ from HGSEMI, in a QFN-16(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | Y0B | bidirectional | Mux B independent analog I/O channel 0. Bidirectional analog switch terminal; connected to ZB when A1=L, A0=L and E=L. RON typ 80 Ω at VDD-VEE=9 V. |+| 2 | Y2B | bidirectional | Mux B independent analog I/O channel 2. Connected to ZB when A1=H, A0=L and E=L. |+| 3 | ZB | bidirectional | Mux B common analog I/O. Routed to one of Y0B..Y3B according to A1/A0 when E=L; high-impedance when E=H. |+| 4 | Y3B | bidirectional | Mux B independent analog I/O channel 3. Connected to ZB when A1=H, A0=H and E=L. |+| 5 | Y1B | bidirectional | Mux B independent analog I/O channel 1. Connected to ZB when A1=L, A0=H and E=L. |+| 6 | E | input | Active-low common enable. When E=L, one selected channel per mux (A/B) is turned on; when E=H all switches are OFF (high impedance) regardless of A0/A1. |+| 7 | VEE | power_in | Negative analog supply. Sets the lower rail for the analog switch pass range (VEE ≤ VI/O ≤ VDD). Typical range -6 V to 0 V; VDD-VEE ≤ 9 V recommended. |+| 8 | VSS | power_in | Digital ground (0 V reference for A0, A1, E logic inputs). Tie to VEE when used as a purely digital 4-to-1 mux/demux. |+| 9 | A1 | input | Channel-select address bit 1 (MSB). Digital input referenced VSS..VDD; selects one of four channels per mux together with A0. |+| 10 | A0 | input | Channel-select address bit 0 (LSB). Digital input referenced VSS..VDD; selects one of four channels per mux together with A1. |+| 11 | Y3A | bidirectional | Mux A independent analog I/O channel 3. Connected to ZA when A1=H, A0=H and E=L. |+| 12 | Y0A | bidirectional | Mux A independent analog I/O channel 0. Connected to ZA when A1=L, A0=L and E=L. |+| 13 | ZA | bidirectional | Mux A common analog I/O. Routed to one of Y0A..Y3A according to A1/A0 when E=L; high-impedance when E=H. |+| 14 | Y1A | bidirectional | Mux A independent analog I/O channel 1. Connected to ZA when A1=L, A0=H and E=L. |+| 15 | Y2A | bidirectional | Mux A independent analog I/O channel 2. Connected to ZA when A1=H, A0=L and E=L. |+| 16 | VDD | power_in | Positive supply. Recommended 3.0-9.0 V (typ 5.0 V); VDD-VEE ≤ 9 V. Sets the upper rail for both the digital logic and the analog switch pass range. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | QFN-16(3x3) |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `74HC4052LQ`+- `74HC4052LQ/TR`+- `74HC4052LQN`+- `74HC4052LQM/TR`+- `74HC4052LQMT/TR`+- `74HC4052LQMS/TR`++## CAD (KiCad official)++- Symbol: `74HC4052LQ`+- Footprint: `Package_DFN_QFN:MPS_QFN-16_3x3mm_P0.5mm`+- 3D model: QFN-16(3x3) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/74hc4052lq-datasheet.pdf) (13 pp, sha256 `c10511caf4ff602c`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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](docs/74hc4052lq-datasheet.pdf)

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