# PI3B3126LEX

**Diodes Incorporated** · Signal Switches, Multiplexers, Decoders · TSSOP-14

PI3B3126LEX from Diodes Incorporated, in a TSSOP-14. 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 | BE0 | input | Active-HIGH bus enable for switch 0 on the PI3B3126; driving it high connects A0 to B0, and driving it low puts the switch in high impedance (disconnect). |
| 2 | A0 | bidirectional | Bus A, bit 0 port of the 5Ω bus switch, which connects to B0 when BE0 is enabled. |
| 3 | B0 | bidirectional | Bus B, bit 0 port of the 5Ω bus switch, which connects to A0 when BE0 is enabled. |
| 4 | BE1 | input | Active-HIGH bus enable for switch 1 on the PI3B3126; driving it high connects A1 to B1, and driving it low puts the switch in high impedance (disconnect). |
| 5 | A1 | bidirectional | Bus A, bit 1 port of the 5Ω bus switch, which connects to B1 when BE1 is enabled. |
| 6 | B1 | bidirectional | Bus B, bit 1 port of the 5Ω bus switch, which connects to A1 when BE1 is enabled. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | B2 | bidirectional | Bus B, bit 2 port of the 5Ω bus switch, which connects to A2 when BE2 is enabled. |
| 9 | A2 | bidirectional | Bus A, bit 2 port of the 5Ω bus switch, which connects to B2 when BE2 is enabled. |
| 10 | BE2 | input | Active-HIGH bus enable for switch 2 on the PI3B3126; driving it high connects A2 to B2, and driving it low puts the switch in high impedance (disconnect). |
| 11 | B3 | bidirectional | Bus B, bit 3 port of the 5Ω bus switch, which connects to A3 when BE3 is enabled. |
| 12 | A3 | bidirectional | Bus A, bit 3 port of the 5Ω bus switch, which connects to B3 when BE3 is enabled. |
| 13 | BE3 | input | Active-HIGH bus enable for switch 3 on the PI3B3126; driving it high connects A3 to B3, and driving it low puts the switch in high impedance (disconnect). |
| 14 | VCC | power_in | 3.3V supply (VCC = 3.3V ±10% over the operating range); the datasheet gives an absolute maximum supply of -0.5V to +4.6V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Storage Temperature |  | -65 |  | 150 | °C |  | 3 |
| Supply Voltage to Ground Potential |  | -0.5 |  | 4.6 | V |  | 3 |
| DC Input Voltage |  | -0.5 |  | 4.6 | V |  | 3 |
| Power Dissipation |  |  |  | 0.5 | W |  | 3 |
| Junction Temperature | Tj |  |  | 125 | °C |  | 3 |
| Operating Ambient Temperature | TA | -40 |  | 85 | °C | Over the Operating Range | 3 |
| Supply Voltage tolerance | VCC | -10 |  | 10 | % | VCC = 3.3V ±10% | 3 |
| Input HIGH Voltage | VIH | 2 |  |  | V | Guaranteed Logic HIGH Level | 3 |
| Input LOW Voltage | VIL | -0.5 |  | 0.8 | V | Guaranteed Logic LOW Level | 3 |
| Input HIGH Current | IIH | -1 |  | 1 | µA | VCC = Max., VIN = Vcc | 3 |
| Input LOW Current | IIL | -1 |  | 1 | µA | VCC = Max., VIN = GND | 3 |
| Off Current | IOFF |  |  | 10 | µA | VCC = 0, VOUT = 3 to 3.6V | 3 |
| Clamp Diode Voltage | VIK |  |  | -1.2 | V | VCC = Min., IIN= -18mA | 3 |
| Switch On Resistance | RON |  | 5 | 8 | Ω | VCC = Min., VIN = 0.0V, ION = 48mA or 60mA | 3 |
| Switch On Resistance | RON |  | 10 | 17 | Ω | VCC = Min., VIN = 2.4V, ION = 15mA | 3 |
| Input Capacitance | CIN |  | 3.5 |  | pF | TA = 25°C, f = 1 MHz; VIN = 0V | 3 |
| A/B Capacitance, Switch Off | COFF |  | 8 |  | pF | TA = 25°C, f = 1 MHz; VIN = 0V | 3 |
| Propagation Delay Ax to Bx, Bx to Ax (PI3B3126) | tPLH, tPHL |  |  | 0.25 | ns | CL = 50pF, RL = 500Ω | 4 |
| Bus Enable Time (PI3B3126) | tPZH, tPZL | 1 |  | 2.5 | ns | CL = 50pF, RL = 500Ω | 4 |
| Bus Disable Time (PI3B3126) | tPHZ, tPLZ | 1 |  | 4 | ns | RL = 500Ω | 4 |
| Quiescent Power Supply Current | ICC |  | 0.1 | 3 | µA | VCC = Max. VIN = GND or VCC | 4 |
| Supply Current per Input HIGH | ΔICC |  |  | 750 | µA | VCC = Max. VIN = 3.0V | 4 |

## CAD (KiCad official)

- Symbol: `PI3B3126LEX`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `pi3b3126lex-etched.step` / `pi3b3126lex-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pi3b3126lex.step` / `pi3b3126lex.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560090536603107328) (9 pp, sha256 `6ae833bbcf0d58a3`, retrieved 2026-10-18, 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](docs/pi3b3126lex-datasheet.pdf)