component

STLD1TR

Public Made by Adom

by adom

STMicroelectronics Buffers, Drivers, Receivers, Transceivers, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STLD1TR

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stld1tr.step / stld1tr.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF