component
STLD1TR
Public Made by Adomby adom
STMicroelectronics Buffers, Drivers, Receivers, Transceivers, QFN-24-EP(4x4). Pinout cross-checked by two models 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
markdownSTLD1TR
STMicroelectronics · Buffers, Drivers, Receivers, Transceivers · QFN-24-EP(4x4)
STLD1TR from STMicroelectronics, in a QFN-24-EP(4x4). 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 | PGND | power_in | Power amplifier ground; must be connected to PGND for the power amplifier return current. |
| 2 | PA2_OUT | output | Power amplifier 2 output; set to Hi-Z (approx. 30 kΩ) when TX_ON_2 is forced low, and the output can swing up to 18 Vpp single-ended or 36 Vpp differential. |
| 3 | PA2_OUT | output | Power amplifier 2 output (second pin of the PA2_OUT pair, shared in the datasheet pin table with pin 2); same Hi-Z and output limits apply. |
| 4 | PA1_OUT | output | Power amplifier 1 output; set to Hi-Z (approx. 30 kΩ) when TX_ON_1 is forced low, and the output can swing up to 18 Vpp single-ended or 36 Vpp differential. |
| 5 | PA1_OUT | output | Power amplifier 1 output (second pin of the PA1_OUT pair, shared in the datasheet pin table with pin 4); same Hi-Z and output limits apply. |
| 6 | PGND | power_in | Power amplifier ground; must be connected to PGND for the power amplifier return current. |
| 7 | PVCC | power_in | 8-18 V power amplifier supply input. |
| 8 | VCC | power_in | 8-18 V analog supply input for the 5 V internal regulator and analog circuitry; must be externally shorted to PVCC. |
| 9 | AGND | power_in | Analog ground; must be externally shorted to PGND. |
| 10 | CSF_OUT | output | Power amplifier current feedback output, proportional to the line driver output current and converted to voltage by an external resistor. |
| 11 | AVDD_5V | power_out | 5 V internal regulator output; requires a bypass capacitor of at least 10 µF to AGND. |
| 12 | RSV0 | passive | Reserved; connect to AGND. |
| 13 | PA1_INN | input | Power amplifier 1 negative input. |
| 14 | PA1_INP | input | Power amplifier 1 positive input. |
| 15 | PA2_INP | input | Power amplifier 2 positive input. |
| 16 | PA2_INN | input | Power amplifier 2 negative input. |
| 17 | RSV1 | unconnected | Reserved; leave floating. |
| 18 | RSV2 | passive | Reserved; connect to AGND. |
| 19 | RSV3 | passive | Reserved; connect to AGND. |
| 20 | THERM | output | Thermal feedback current output, equal to 0 to 4 times IBIAS_IN current depending on junction temperature level. |
| 21 | IBIAS_IN | input | Reference current input (typically 16 or 32 µA) that sets the bias and the thermal feedback current scale. |
| 22 | TX_ON_2 | input | Enable for power amplifier 2 (active high); forcing it low sets PA2_OUT to Hi-Z (approx. 30 kΩ). |
| 23 | TX_ON_1 | input | Enable for power amplifier 1 (active high); forcing it low sets PA1_OUT to Hi-Z (approx. 30 kΩ). |
| 24 | PVCC | power_in | Power amplifier supply input, 8-18 V. |
| 25 | Exposed pad | power_in | Must be connected to an AGND ground plane on the PCB. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | QFN-24-EP(4x4) |
| Category | Logic |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
STLD1TR - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm - 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
stld1tr-etched.step/stld1tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stld1tr.step/stld1tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (13 pp, sha256
ecbb0aba385320bb, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(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).