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SN3257QPWRQ1
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Texas Instruments Analog Switches, Multiplexers, TSSOP-16. Pinout extracted from 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
markdownSN3257QPWRQ1
Texas Instruments · Analog Switches, Multiplexers · TSSOP-16
SN3257QPWRQ1 from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SEL | input | Select pin: controls state of switches (routes SxA or SxB to Dx). 1.8 V-compatible logic input with internal 6 MΩ pull-down to GND (VIH ≥ 1.2 V, VIL ≤ 0.45 V). |
| 2 | S1A | bidirectional | Source pin 1A of channel 1. Analog/digital I/O routed to D1 when SEL selects the A path. RON ≈ 5 Ω, signals 0 V to 2×VDD (max 5.5 V). |
| 3 | S1B | bidirectional | Source pin 1B of channel 1. Analog/digital I/O routed to D1 when SEL selects the B path. RON ≈ 5 Ω, signals 0 V to 2×VDD. |
| 4 | D1 | bidirectional | Drain pin 1 (common) of channel 1. Connects to either S1A or S1B based on SEL. Bidirectional analog switch path. |
| 5 | S2A | bidirectional | Source pin 2A of channel 2. Routed to D2 when SEL selects the A path. |
| 6 | S2B | bidirectional | Source pin 2B of channel 2. Routed to D2 when SEL selects the B path. |
| 7 | D2 | bidirectional | Drain pin 2 (common) of channel 2. Connects to either S2A or S2B based on SEL. |
| 8 | GND | power_in | Ground (0 V) reference. |
| 9 | D3 | bidirectional | Drain pin 3 (common) of channel 3. Connects to either S3A or S3B based on SEL. |
| 10 | S3B | bidirectional | Source pin 3B of channel 3. Routed to D3 when SEL selects the B path. |
| 11 | S3A | bidirectional | Source pin 3A of channel 3. Routed to D3 when SEL selects the A path. |
| 12 | D4 | bidirectional | Drain pin 4 (common) of channel 4. Connects to either S4A or S4B based on SEL. |
| 13 | S4B | bidirectional | Source pin 4B of channel 4. Routed to D4 when SEL selects the B path. |
| 14 | S4A | bidirectional | Source pin 4A of channel 4. Routed to D4 when SEL selects the A path. |
| 15 | EN | input | Active-low enable (EN). When high, all switches are turned off (Hi-Z); when low, SEL controls the signal path selection. Internal 6 MΩ pull-down to GND. |
| 16 | VDD | power_in | Positive power supply (1.5 V to 5.5 V). Connect a 0.1 µF to 10 µF decoupling capacitor between VDD and GND for reliable operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
Ordering variants
Same part, different packaging or reel option.
SN3257QPWRQ1SN3257QPWRQ1DYY
CAD (KiCad official)
- Symbol:
SN3257QPWRQ1 - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
sn3257qpwrq1-etched.step/sn3257qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn3257qpwrq1.step/sn3257qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
2bd0cef536bfca7d, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).