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DS2431+T&R
Public Made by Adomby adom
Analog Devices Inc Maxim Integrated EEPROM, TO-92-3. 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
markdownDS2431+T&R
Analog Devices Inc Maxim Integrated · EEPROM · TO-92-3
DS2431+T&R from Analog Devices Inc Maxim Integrated, in a TO-92-3. 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 | GND | power_in | Ground reference for the device; the 1-Wire bus requires only a single data lead and a ground return. |
| 2 | IO | bidirectional | 1-Wire bus interface, an open-drain signal that requires an external pullup resistor (RPUP 0.3 kΩ to 2.2 kΩ, VPUP 2.8 V to 5.25 V). |
| 3 | N.C. | unconnected | Not connected; the datasheet specifies no function for this lead on the TO-92 package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | TO-92-3 |
| Category | Memory |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 1-Wire Pullup Voltage | VPUP | 2.8 | 5.25 | V | Note 2 | 2 | |
| 1-Wire Pullup Resistance | RPUP | 0.3 | 2.2 | kΩ | Notes 2, 3 | 2 | |
| Input Capacitance | CIO | 1000 | pF | Notes 4, 5 | 2 | ||
| Input Load Current | IL | 0.05 | 6.7 | µA | IO pin at VPUP | 2 | |
| High-to-Low Switching Threshold | VTL | 0.5 | V | Notes 5, 6, 7; printed max is VPUP - 1.8 V | 2 | ||
| Input Low Voltage | VIL | 0.5 | V | Notes 2, 8 | 2 | ||
| Low-to-High Switching Threshold | VTH | 1 | V | Notes 5, 6, 9; printed max is VPUP - 1.0 V | 2 | ||
| Switching Hysteresis | VHY | 0.21 | 1.7 | V | Notes 5, 6, 10 | 2 | |
| Output Low Voltage | VOL | 0.4 | V | At 4mA (Note 11) | 2 | ||
| Recovery Time (standard speed) | tREC | 5 | µs | Notes 2, 12; standard speed, RPUP = 2.2kΩ | 2 | ||
| Recovery Time (overdrive speed) | tREC | 2 | µs | Notes 2, 12; overdrive speed, RPUP = 2.2kΩ | 2 | ||
| Recovery Time (overdrive, directly prior to reset pulse) | tREC | 5 | µs | Notes 2, 12; overdrive speed directly prior to reset pulse, RPUP = 2.2kΩ | 2 | ||
| Rising-Edge Hold-Off Time (standard speed) | tREH | 0.5 | 5 | µs | Notes 5, 13; standard speed | 2 | |
| Time Slot Duration (standard speed) | tSLOT | 65 | µs | Notes 2, 14; standard speed | 2 | ||
| Time Slot Duration (overdrive speed) | tSLOT | 8 | µs | Notes 2, 14; overdrive speed | 2 | ||
| Reset Low Time (standard speed) | tRSTL | 480 | 640 | µs | Note 2; standard speed | 2 | |
| Reset Low Time (overdrive speed) | tRSTL | 48 | 80 | µs | Note 2; overdrive speed | 2 | |
| Presence-Detect High Time (standard speed) | tPDH | 15 | 60 | µs | standard speed | 2 | |
| Presence-Detect High Time (overdrive speed) | tPDH | 2 | 6 | µs | overdrive speed | 2 | |
| Presence-Detect Low Time (standard speed) | tPDL | 60 | 240 | µs | standard speed | 2 | |
| Presence-Detect Low Time (overdrive speed) | tPDL | 8 | 24 | µs | overdrive speed | 2 | |
| Presence-Detect Sample Time (standard speed) | tMSP | 60 | 75 | µs | Notes 2, 15; standard speed | 2 | |
| Presence-Detect Sample Time (overdrive speed) | tMSP | 6 | 10 | µs | Notes 2, 15; overdrive speed | 2 | |
| Write-Zero Low Time (standard speed) | tW0L | 52.1 | 120 | µs | Notes 2, 16, 17; standard speed | 3 | |
| Write-Zero Low Time (overdrive speed, VPUP > 4.5V) | tW0L | 5 | 15.5 | µs | Notes 2, 16, 17; overdrive speed, VPUP > 4.5V | 3 | |
| Write-Zero Low Time (overdrive speed) | tW0L | 6 | 15.5 | µs | Notes 2, 16, 17; overdrive speed | 3 | |
| Write-One Low Time (standard speed) | tW1L | 1 | 15 | µs | Notes 2, 17; standard speed | 3 | |
| Write-One Low Time (overdrive speed) | tW1L | 1 | 2 | µs | Notes 2, 17; overdrive speed | 3 | |
| Read Low Time (standard speed) | tRL | 5 | µs | Notes 2, 18; standard speed; printed max is 15 - d | 3 | ||
| Read Low Time (overdrive speed) | tRL | 1 | µs | Notes 2, 18; overdrive speed; printed max is 2 - d | 3 | ||
| Read Sample Time (standard speed) | tMSR | 15 | µs | Notes 2, 18; standard speed; printed min is tRL + d | 3 | ||
| Read Sample Time (overdrive speed) | tMSR | 2 | µs | Notes 2, 18; overdrive speed; printed min is tRL + d | 3 | ||
| Programming Current | IPROG | 0.8 | mA | Notes 5, 19 | 3 | ||
| Programming Time | tPROG | 10 | ms | Notes 20, 21; version A2 and later (version A1: 12.5 ms) | 3 | ||
| Write/Erase Cycles (Endurance) at +25°C | NCY | 200 | kcycles | Notes 22, 23; At +25°C | 3 | ||
| Write/Erase Cycles (Endurance) at +85°C (worst case) | NCY | 50 | kcycles | Notes 22, 23; At +85°C (worst case) | 3 | ||
| Data Retention | tDR | 40 | years | Notes 24, 25, 26; At +85°C (worst case) | 3 | ||
| IO Voltage Range to GND | VIO | -0.5 | 6 | V | 2 | ||
| IO Sink Current | IIO | 20 | mA | 2 | |||
| Operating Temperature Range | TA | -40 | 85 | °C | 2 | ||
| Junction Temperature | TJ | 150 | °C | 2 | |||
| Storage Temperature Range | TSTG | -55 | 125 | °C | 2 | ||
| Lead Temperature (excluding UCSP, soldering, 10s) | TLEAD | 300 | °C | Excluding UCSP, soldering, 10s | 2 | ||
| Soldering Temperature (reflow), TO-92 | TSOLDER | 250 | °C | TO-92 package | 2 |
CAD (KiCad official)
- Symbol:
DS2431+T&R - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
ds2431-t-r-etched.step/ds2431-t-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds2431-t-r.step/ds2431-t-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (27 pp, sha256
17faab651646bde6, retrieved 2026-10-18, 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).