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CD4543BPWR
Public Made by Adomby adom
Texas Instruments LCD Drivers, TSSOP-16. Pinout reviewed by a person against the datasheet, 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
markdownCD4543BPWR
Texas Instruments · LCD Drivers · TSSOP-16
CD4543BPWR from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | LD | input | Latch Disable input; when LD=0 the four input latches are transparent and BCD data is decoded; when LD=1 the latches hold the last BCD code and inputs are ignored. |
| 2 | C | input | BCD data input C (bit 2); one of four BCD inputs decoded to drive the seven-segment outputs; all inputs protected by CMOS protection network. |
| 3 | B | input | BCD data input B (bit 1); one of four BCD inputs decoded to drive the seven-segment outputs; all inputs protected by CMOS protection network. |
| 4 | D | input | BCD data input D (bit 3, MSB); one of four BCD inputs decoded to drive the seven-segment outputs; all inputs protected by CMOS protection network. |
| 5 | A | input | BCD data input A (bit 0, LSB); one of four BCD inputs decoded to drive the seven-segment outputs; all inputs protected by CMOS protection network. |
| 6 | Ph | input | Phase input; apply square wave for LCD operation; connect to VSS (Ph=0) for common-cathode LED or to VDD (Ph=1) for common-anode LED; when LD=1 outputs are the inverse of normal combinations. |
| 7 | BL | input | Blanking input; when BL=1 and LD=0, all seven segment outputs are forced off regardless of BCD input code. |
| 8 | VSS | power_in | Negative supply (GND) reference, 0 V; supply voltage range VDD−VSS = 3 V min to 18 V max. |
| 9 | a | output | Seven-segment display driver output for segment a (top horizontal); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 10 | b | output | Seven-segment display driver output for segment b (upper-right vertical); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 11 | c | output | Seven-segment display driver output for segment c (lower-right vertical); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 12 | d | output | Seven-segment display driver output for segment d (bottom horizontal); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 13 | e | output | Seven-segment display driver output for segment e (lower-left vertical); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 14 | g | output | Seven-segment display driver output for segment g (middle horizontal); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 15 | f | output | Seven-segment display driver output for segment f (upper-left vertical); output polarity determined by Ph input; capable of driving TTL loads or one low-power Schottky load. |
| 16 | VDD | power_in | Positive supply voltage; operating range 3 V to 18 V (full package temperature range); absolute maximum −0.5 V to +20 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | LED Drivers |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
CD4543BPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
cd4543bpwr-etched.step/cd4543bpwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd4543bpwr.step/cd4543bpwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (20 pp, sha256
3cec60d19f903f4c, retrieved 2026-10-21, tier: manufacturer) - 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).