SN74LS47N

@@ -0,0 +1,59 @@+# SN74LS47N++**XBLW** · Digital Tube Drivers · DIP-16++SN74LS47N from XBLW, in a DIP-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 | B | input | BCD data input bit B (weight 2). Active-high 4-bit BCD input word (A,B,C,D) fed to the decoder. |+| 2 | C | input | BCD data input bit C (weight 4). Active-high input to the BCD-to-seven-segment decoder. |+| 3 | ~LT | input | Lamp Test input (active low). When BI/RBO is high and LT is pulled low, all seven segment outputs (a-g) are driven on to verify the display. |+| 4 | ~BI/RBO | bidirectional | Blanking Input / Ripple-Blanking Output (active low, open-collector/wired-AND). Driving this pin low forces all segment outputs off (blanking). As RBO, it goes low when the internal ripple-blank condition is met (RBI low and input = 0), and can be cascaded to the RBI of the next stage for leading/trailing zero suppression. |+| 5 | ~RBI | input | Ripple-Blanking Input (active low). When RBI is low and the BCD input is zero, the display is blanked and RBO goes low; used with BI/RBO of neighbouring digits to suppress leading/trailing zeros. |+| 6 | D | input | BCD data input bit D (weight 8, MSB). Active-high input to the BCD-to-seven-segment decoder. |+| 7 | A | input | BCD data input bit A (weight 1, LSB). Active-high input to the BCD-to-seven-segment decoder. |+| 8 | GND | power_in | Ground reference, 0 V. |+| 9 | e | output | Segment 'e' data output, active-low open-collector drive intended to sink current from a common-anode LED segment. Max output current ±25 mA. |+| 10 | d | output | Segment 'd' data output, active-low open-collector drive for a common-anode LED segment. |+| 11 | c | output | Segment 'c' data output, active-low open-collector drive for a common-anode LED segment. |+| 12 | b | output | Segment 'b' data output, active-low open-collector drive for a common-anode LED segment. |+| 13 | a | output | Segment 'a' data output, active-low open-collector drive for a common-anode LED segment. |+| 14 | g | output | Segment 'g' data output, active-low open-collector drive for a common-anode LED segment. |+| 15 | f | output | Segment 'f' data output, active-low open-collector drive for a common-anode LED segment. |+| 16 | VCC | power_in | Supply voltage. Operating range 2.0 V to 6.0 V (typ. 5.0 V); absolute max +7 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XBLW |+| Package | DIP-16 |+| Category | LED Drivers |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `SN74LS47NN`+- `SN74LS47NDTR`+- `SN74LS47NTDTR`++## CAD (KiCad official)++- Symbol: `SN74LS47N`+- Footprint: `Package_DIP:DIP-16_W7.62mm`+- 3D model: DIP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XBLW datasheet](docs/sn74ls47n-datasheet.pdf) (12 pp, sha256 `b4f8b46d935ec0df`, 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/sn74ls47n-datasheet.pdf)

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