CD4543BM

@@ -0,0 +1,59 @@+# CD4543BM++**HGSEMI** · LCD Drivers · SOP-16++CD4543BM from HGSEMI, 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 | LD | input | Latch Disable input. When LD = 1 the BCD inputs (A-D) are passed through to the decoder; when LD = 0 the last BCD code is stored in the 4-bit latch and the outputs are frozen. |+| 2 | C | input | BCD data input, bit C (weight 4) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD. |+| 3 | B | input | BCD data input, bit B (weight 2) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD. |+| 4 | D | input | BCD data input, bit D (weight 8, MSB) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD. |+| 5 | A | input | BCD data input, bit A (weight 1, LSB) of the 8421 BCD code. CMOS logic input referenced to VSS/VDD. |+| 6 | Ph | input | Phase input. For LCD readouts apply a square wave (VSS to VDD) common with the backplane drive. For common-cathode LED select Ph = 0; for common-anode LED select Ph = 1 to invert the segment output combinations. |+| 7 | BI | input | Blanking input. When BI = 1 all seven segment outputs (a-g) are forced to the blank state (all 0 with Ph = 0). Normal decode occurs when BI = 0. |+| 8 | VSS | power_in | Negative supply / ground reference. Tied to 0 V in single-supply operation. |+| 9 | a | output | Seven-segment decoded output 'a'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 10 | b | output | Seven-segment decoded output 'b'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 11 | c | output | Seven-segment decoded output 'c'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 12 | d | output | Seven-segment decoded output 'd'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 13 | e | output | Seven-segment decoded output 'e'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 14 | g | output | Seven-segment decoded output 'g' (middle segment). Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 15 | f | output | Seven-segment decoded output 'f'. Directly drives an LCD/LED/VF segment; polarity is set by the Ph input. |+| 16 | VDD | power_in | Positive supply pin. Recommended operating range 3.0 V to 15 V (absolute max 18 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-16 |+| Category | LED-drv |+| Pins | 16 |++## Ordering variants++- `CD4543BMBE`+- `CD4543BMBN`+- `CD4543BMBM/TR`+- `CD4543BMBMT/TR`+- `CD4543BMBLQ/TR`++## CAD (KiCad official)++- Symbol: `CD4543BM`+- 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:** [HGSEMI datasheet](docs/cd4543bm-datasheet.pdf) (12 pp, sha256 `e4c42b550d773708`, 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/cd4543bm-datasheet.pdf)

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