BU4052BCF-E2

@@ -0,0 +1,58 @@+# BU4052BCF-E2++**ROHM** · Analog Switches, Multiplexers · SOP-16++BU4052BCF-E2 from ROHM, in a SOP-16. 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 | Y0 | bidirectional | Y-bank analog switch terminal 0. Bidirectional analog I/O; connected to COMMON Y when A=0, B=0 and INHIBIT=L. Signal range VEE to VDD, typical RON 250 Ω at VDD=10 V. |+| 2 | Y2 | bidirectional | Y-bank analog switch terminal 2. Bidirectional analog I/O; connected to COMMON Y when A=0, B=1 and INHIBIT=L. Signal range VEE to VDD. |+| 3 | COMMON Y | bidirectional | Common (pole) terminal for the Y-bank 4:1 analog switch. Bidirectional; routes to whichever Y0-Y3 the A/B decode selects when INHIBIT=L. |+| 4 | Y3 | bidirectional | Y-bank analog switch terminal 3. Bidirectional analog I/O; connected to COMMON Y when A=1, B=1 and INHIBIT=L. |+| 5 | Y1 | bidirectional | Y-bank analog switch terminal 1. Bidirectional analog I/O; connected to COMMON Y when A=1, B=0 and INHIBIT=L. |+| 6 | INHIBIT | input | Active-high enable/disable control. When INHIBIT=H all X and Y switches are OFF (both COMMONs isolated). When INHIBIT=L the A/B decode selects one X-Y channel pair. Digital input referenced VSS to VDD (VIH ≥ 7.0 V at VDD=10 V). |+| 7 | VEE | power_in | Negative analog supply for the switch path. Sets the lower rail of the analog input/output range; must satisfy VEE ≤ VSS. Typically tied to VSS for single-supply operation or to a negative rail for bipolar analog signals. |+| 8 | VSS | power_in | Digital/logic ground (negative supply for the control logic). Reference for VIL/VIH thresholds on A, B and INHIBIT. |+| 9 | B | input | Binary channel-select address input, MSB. Together with A selects one of four channels per bank when INHIBIT=L. Digital input referenced VSS to VDD. |+| 10 | A | input | Binary channel-select address input, LSB. Together with B selects one of four channels per bank when INHIBIT=L. Digital input referenced VSS to VDD. |+| 11 | X3 | bidirectional | X-bank analog switch terminal 3. Bidirectional analog I/O; connected to COMMON X when A=1, B=1 and INHIBIT=L. |+| 12 | X0 | bidirectional | X-bank analog switch terminal 0. Bidirectional analog I/O; connected to COMMON X when A=0, B=0 and INHIBIT=L. |+| 13 | COMMON X | bidirectional | Common (pole) terminal for the X-bank 4:1 analog switch. Bidirectional; routes to whichever X0-X3 the A/B decode selects when INHIBIT=L. |+| 14 | X1 | bidirectional | X-bank analog switch terminal 1. Bidirectional analog I/O; connected to COMMON X when A=1, B=0 and INHIBIT=L. |+| 15 | X2 | bidirectional | X-bank analog switch terminal 2. Bidirectional analog I/O; connected to COMMON X when A=0, B=1 and INHIBIT=L. |+| 16 | VDD | power_in | Positive supply for logic and analog switches. Operating range 3 V to 18 V (absolute max 20 V). Sets the upper rail of the analog signal range and the VIH threshold for the control inputs. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ROHM |+| Package | SOP-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `BU4052BCF-E2`+- `BU4052BCFV`++## CAD (KiCad official)++- Symbol: `BU4052BCF-E2`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ROHM datasheet](docs/bu4052bcf-e2-datasheet.pdf) (22 pp, sha256 `ed206cb8aca49cd6`, retrieved 2026-08-17, tier: lcsc)+- **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/bu4052bcf-e2-datasheet.pdf)

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