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RS4T774XTSS16

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by Ray

Jiangsu RUNIC Tech Translators / Level Shifters, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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RS4T774XTSS16

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.

  • RS4T774XTSS16
  • RS4T774XTSS16XTQW16
  • RS4T774XTSS16XTQQ16

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).

Datasheet PDF