Board Design for WT32-ETH01

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Looking for "package type, recommended package information, pin descriptions for VIN VCC EN SW BOOT FB PG AGND PGND, recommended external components, output current capability" in lmr33620

Looking for "package type, pin descriptions for VCCA VCCB OE A1 A2 B1 B2 GND, direction behavior, recommended usage and any notes for open-drain or push-pull signals" in txs0102.pdf

Searching library for: "Hand-solderable replacement for Texas Instruments LMR33620ARNXT buck regulator in a WT32-ETH01 carrier board. Requirements: 12V input nominal, 5V output around 0.5A or more, easier to hand solder than VQFN, prefer SOIC, SOT-223, TO-263, or through-hole-friendly package, simple external BOM, suitable for prototype PCB."

Searching library for: "Hand-solderable replacement for TXS0102DCTR 2-channel level shifter for Wiegand D0/D1 signals from 5V reader to 3.3V ESP32. Requirements: 2 channels minimum, easier to hand solder than MSOP, prefer SOIC/TSSOP/through-hole-friendly package, works with 3.3V and 5V logic, suitable for low-speed digital open-collector or push-pull style signals on prototype PCB."

Creating search plan for: "Hand-solderable replacement for Texas Instruments LMR33620ARNXT buck regulator in a WT32-ETH01 carrier board. Requirements: 12V input nominal, 5V output around 0.5A or more, easier to hand solder than VQFN, prefer SOIC, SOT-223, TO-263, or through-hole-friendly package, simple external BOM, suitable for prototype PCB. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","availability"] hitsPerPage: 10"

Creating search plan for: "Hand-solderable replacement for TXS0102DCTR 2-channel level shifter for Wiegand D0/D1 signals from 5V reader to 3.3V ESP32. Requirements: 2 channels minimum, easier to hand solder than MSOP, prefer SOIC/TSSOP/through-hole-friendly package, works with 3.3V and 5V logic, suitable for low-speed digital open-collector or push-pull style signals on prototype PCB. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","availability"] hitsPerPage: 10"

Searching: "2-channel bidirectional level shifter for 5V-to-3.3V signals (Wiegand D0/D1), supports open-drain and push-pull, prefers SOIC or TSSOP or through-hole-friendly package for hand soldering"

Searching: "dual MOSFET-based or discrete-friendly level translator for low-speed digital signals (Wiegand), 5V to 3.3V, 2 channels minimum, easy to hand-solder package"

Found 40 results.

Searching: "Hand-solderable replacement for TXS0102DCTR 2-channel level shifter for Wiegand D0/D1 signals from 5V reader to 3.3V ESP32. Requirements: 2 channels minimum, easier to hand solder than MSOP, prefer SOIC/TSSOP/through-hole-friendly package, works with 3.3V and 5V logic, suitable for low-speed digital open-collector or push-pull style signals on prototype PCB. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","availability"] hitsPerPage: 10"

Searching: "12V input to 5V buck regulator, >=0.5A output, hand-solderable package (SOIC, SOT-223, TO-263, TO-220 or through-hole), low external component count, suitable for prototype PCB"

Found 25 results.

Searching: "Hand-solderable replacement for Texas Instruments LMR33620ARNXT buck regulator in a WT32-ETH01 carrier board. Requirements: 12V input nominal, 5V output around 0.5A or more, easier to hand solder than VQFN, prefer SOIC, SOT-223, TO-263, or through-hole-friendly package, simple external BOM, suitable for prototype PCB. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","availability"] hitsPerPage: 10"

Finished searching for components.

Running multiple web searches.

Found 10 results.

Found 10 results.

Found 10 results.

Found 10 results.

Found 10 results.

Sì: per U3 hai alternative più comode da saldare a mano.
Per IC1, sì, ma con compromessi.
Risposta breve
  • IC1: io valuterei seriamente LM2575-5.0WU oppure LM2576-5.0WT
  • U3: se vuoi restare su IC, la sostituzione “più saldabile” non è perfetta; la soluzione che consiglierei di più è fare due canali discreti con MOSFET, invece di cercare un altro translator IC
Per sostituire IC1

Opzioni valide

PartePackageCorrenteNote
LM2575-5.0WUTO-263 / famiglia disponibile anche in TO-220 secondo datasheet web1 Amolto più facile del QFN
LM2576-5.0WTTO-220 / TO-263 dal datasheet TI3 Ala più comoda da prototipare a mano
MP1584SOIC-8E3 Apiù facile del QFN, ma meno comoda del TO-220
Quella che ti consiglierei
  • Se vuoi massima facilità di saldatura manuale: LM2576-5.0WT
  • Se vuoi qualcosa di un po' più compatto ma ancora umano: LM2575-5.0WU
Perché
Dai risultati trovati sul web:
  • LM2575-5.0WU è disponibile in TO-220 e TO-263 con 1 A
  • LM2576-5.0WT è disponibile in TO-220 e TO-263 con 3 A
  • MP1584 è in SOIC-8E, quindi più saldabile del VQFN ma ancora SMD fine-pitch
Per sostituire U3
Qui è più delicato.
Il web conferma che TXS0102DCTR è pensato proprio per:
  • open-drain
  • e anche push-pull
  • con traduzione bidirezionale automatica
Questo lo rende molto adatto a Wiegand.
Il problema è il package piccolo.

Alternative trovate

PartePackageVa bene?Nota
TXB0104DSOIC-14No, sconsigliatopiù comodo da saldare, ma non ideale per linee open-drain
SN74LVC2T45DCURVSSOP-8Possibile ma meno comodorichiede controllo direzione
ADuM1250SOIC-8No, non la userei quiè un isolatore, non una sostituzione pulita
La mia raccomandazione vera
Per sostituire U3, non sceglierei un altro IC.
Farei invece 2 canali discreti con:
  • 2 MOSFET piccoli tipo BSS138 / 2N7002
  • 4 pull-up
Per saldatura a mano è molto più gestibile, e per segnali lenti come D0/D1 è una soluzione molto comune.
Lo dico anche perché la ricerca in libreria/web non ha dato un sostituto “grande-package + stesso comportamento open-drain + zero complicazioni” migliore del TXS0102DCTR.
Quindi cosa farei io Soluzione consigliata per prototipo hand-soldered Conclusione netta
  • Sì, IC1 lo sostituirei volentieri per saldatura a mano
  • Sì, U3 si può sostituire, ma non con un translator IC “ovviamente migliore” trovato in package comodo
  • per U3, la soluzione più pratica è discreta
Se vuoi, posso proporti subito:
  • opzione A: refactor con LM2576-5.0WT + 2 MOSFET level shifter
  • opzione B: tieni IC1 e cambi solo U3
Sostituisci U3 discreto
Cerca IC1 TO-220
Verifica compatibilità U3
Confronta ingombro e BOM
27 days
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    esp32_wiegand

    esp32_wiegand thumbnail
    WT32-ETH01 carrier refactored for a single 2x10 WT32 header, 12V input terminal, 6-pin Wiegand terminal, and a 12V-to-5V buck stage with level-shifted D0/D1 plus transistor-driven LED and BUZZER outputs, prepared for a simple 2-layer layout.

    Properties

    Diagram
    


  
    
  
  
    
  














"12V Input Terminal"
"12V to 3.3V Regulator"
"WT32-ETH01 Module Header"
"D0 D1 Level Shifter node_5V to 3.3V"
"Wiegand 4 Pin Terminal"
"LED and Buzzer NPN Drivers"

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $2.14–$3.44

    Digi-Key

    $2.88–$3.86

    LCSC

    $15.71

    Mouser

    $6.91

    TME

    $1.32

    Verical

    $0.49–$1.11

    Controls