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RS4T774XTSS16
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Jiangsu RUNIC Tech Translators / Level Shifters, TSSOP-16. Datasheet-verified pinout, 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
markdownRS4T774XTSS16
Jiangsu RUNIC Tech · Translators / Level Shifters · TSSOP-16
RS4T774XTSS16 from Jiangsu RUNIC Tech, 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 | DIR1 | input | Direction-control input referenced to VCCA. Controls signal flow for the first (A1/B1) I/O channel. VIH/VIL thresholds are ratiometric to VCCA (typ. VCCA0.75 / VCCA0.35). |
| 2 | DIR2 | input | Direction-control input referenced to VCCA. Controls signal flow for the second (A2/B2) I/O channel. |
| 3 | A1 | bidirectional | Input/output A1 for channel 1. Referenced to VCCA (0.9V to 3.6V). Direction set by DIR1; placed in Hi-Z when /OE is high. |
| 4 | A2 | bidirectional | Input/output A2 for channel 2. Referenced to VCCA. Direction set by DIR2; Hi-Z when /OE is high. |
| 5 | A3 | bidirectional | Input/output A3 for channel 3. Referenced to VCCA. Direction set by DIR3; Hi-Z when /OE is high. |
| 6 | A4 | bidirectional | Input/output A4 for channel 4. Referenced to VCCA. Direction set by DIR4; Hi-Z when /OE is high. |
| 7 | DIR3 | input | Direction-control input referenced to VCCA. Controls signal flow for the third (A3/B3) I/O channel. |
| 8 | DIR4 | input | Direction-control input referenced to VCCA. Controls signal flow for the fourth (A4/B4) I/O channel. |
| 9 | /OE | input | Active-low 3-state output-mode enable, referenced to VCCA. Pull /OE high to place all A- and B-port outputs into Hi-Z (isolation mode). |
| 10 | GND | power_in | Device ground reference (0 V) for both A- and B-port domains. |
| 11 | B4 | bidirectional | Input/output B4 for channel 4. Referenced to VCCB (0.9V to 3.6V). Direction set by DIR4; Hi-Z when /OE is high. |
| 12 | B3 | bidirectional | Input/output B3 for channel 3. Referenced to VCCB. Direction set by DIR3; Hi-Z when /OE is high. |
| 13 | B2 | bidirectional | Input/output B2 for channel 2. Referenced to VCCB. Direction set by DIR2; Hi-Z when /OE is high. |
| 14 | B1 | bidirectional | Input/output B1 for channel 1. Referenced to VCCB. Direction set by DIR1; Hi-Z when /OE is high. |
| 15 | VCCB | power_in | B-port supply voltage. Operating range 0.9V ≤ VCCB ≤ 3.6V. Sets the B-side I/O logic levels; independently isolated from VCCA when either drops below ~100 mV. |
| 16 | VCCA | power_in | A-port supply voltage. Operating range 0.9V ≤ VCCA ≤ 3.6V. Sets the A-side I/O logic levels and the reference for all control inputs (DIR1-4, /OE). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | TSSOP-16 |
| Category | Logic |
| Pins | 16 |
Ordering variants
Same part, different packaging or reel option.
RS4T774XTSS16RS4T774XTSS16XTQW16RS4T774XTSS16XTQQ16
CAD (KiCad official)
- Symbol:
RS4T774XTSS16 - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jiangsu RUNIC Tech datasheet (20 pp, sha256
6f89a30cfd089c3c, retrieved 2026-08-17, tier: lcsc) - 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).