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SN74LS47DR
Public Made by Adomby adom
Texas Instruments Digital Tube Drivers, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74LS47DR
Texas Instruments · Digital Tube Drivers · SOIC-16
SN74LS47DR from Texas Instruments, in a SOIC-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 B (active high); Req = 25 kΩ NOM, VIH ≥ 2 V, VIL ≤ 0.8 V. |
| 2 | C | input | BCD data input C (active high); Req = 25 kΩ NOM, VIH ≥ 2 V, VIL ≤ 0.8 V. |
| 3 | /LT | input | Lamp-test input (active low); when held low with BI/RBO open or high, all seven segment outputs are forced on regardless of BCD inputs. |
| 4 | BI/RBO | bidirectional | Blanking input (active-low, overrides all other inputs) / Ripple-blanking output (active-low, driven low by the device when zero suppression blanking occurs); IOH = −200 µA max, IOL = 1.6 mA max. |
| 5 | /RBI | input | Ripple-blanking input (active low); when low simultaneously with all BCD inputs low and /LT high, all outputs are blanked and RBO is driven low for cascaded zero suppression. |
| 6 | D | input | BCD data input D, MSB (active high); Req = 25 kΩ NOM, VIH ≥ 2 V, VIL ≤ 0.8 V. |
| 7 | A | input | BCD data input A, LSB (active high); Req = 25 kΩ NOM, VIH ≥ 2 V, VIL ≤ 0.8 V. |
| 8 | GND | power_in | Ground reference, 0 V. |
| 9 | e | output | Seven-segment output e (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 10 | d | output | Seven-segment output d (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 11 | c | output | Seven-segment output c (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 12 | b | output | Seven-segment output b (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 13 | a | output | Seven-segment output a (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 14 | g | output | Seven-segment output g (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 15 | f | output | Seven-segment output f (open-collector, active low); sinks up to 24 mA at VOL ≤ 0.4 V; off-state voltage 15 V max. |
| 16 | VCC | power_in | Positive supply voltage; 4.75 V to 5.25 V (SN74LS47 operating range), 7 V absolute maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | LED Drivers |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74LS47DR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
sn74ls47dr-etched.step/sn74ls47dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ls47dr.step/sn74ls47dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (31 pp, sha256
8f8497047bd80a5e, retrieved 2026-09-21, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-4-6(text+vision), consensusclaude-opus-4-7(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).