TXS0108E 8-Bit Level Shifter Molecule

An Adom molecule breakout for the Texas Instruments TXS0108E, an 8-bit bidirectional voltage-level translator. Designed for the Adom machine-pin ecosystem with medium-pitch contacts.

Overview

The TXS0108E translates 8 channels bidirectionally between two voltage domains (VCCA: 1.2–3.6 V, VCCB: 1.65–5.5 V). This molecule breaks out all 8 data channels plus power and OE to Adom machine-pin contacts for plug-in use on baseboard layouts.

Parameter Value
IC TXS0108ERGYR (TI, VQFN-20)
Channels 8 bidirectional
VCCA range 1.2 V – 3.6 V
VCCB range 1.65 V – 5.5 V
Data rate Up to 110 Mbps (push-pull)
OE pin Active-high output enable

Pin Map

Contact Signal Side Description
A1 VCCA Left Low-voltage supply
A2 A1 Left Port A channel 1
A3 A2 Left Port A channel 2
A4 A3 Left Port A channel 3
A5 A4 Left Port A channel 4
A6 A5 Left Port A channel 5
A7 A6 Left Port A channel 6
A8 A7 Left Port A channel 7 (active low on silk)
B1 VCCB Right High-voltage supply
B2 B1 Right Port B channel 1
B3 B2 Right Port B channel 2
B4 B3 Right Port B channel 3
B5 B4 Right Port B channel 4
B6 B5 Right Port B channel 5
B7 B6 Right Port B channel 6
B8 B7 Right Port B channel 7
GND GND Bottom-left Ground
OE OE Bottom-right Output enable (active high, pulled high via 100 kΩ)

Components

Ref Value Package Library
U4 TXS0108ERGYR IC_TXS0108ERGYR TXS0108ERGYR
C3 100 nF 0603 (CAPC1608X85) Adom JLCPCB Library
C4 100 nF 0603 (CAPC1608X85) Adom JLCPCB Library
R5 100 kΩ 0603 Adom JLCPCB Library
A1–A8 Machine pin contact CONTACT_MED Adom_Library_Master
B1–B8 Machine pin contact CONTACT_MED Adom_Library_Master
GND, OE, VCCA, VCCB Machine pin (short) MACH_PIN_MED_SHORT Adom_Library_Master

Design Notes

  • Bypass caps (C3, C4) are 100 nF ceramic on both VCCA and VCCB rails, placed close to the IC
  • OE pull-up (R5) is 100 kΩ to VCCB — output enable defaults to active (high) so the level shifter is always on unless OE is driven low
  • Bidirectional auto-direction sensing — no direction pin needed; the TXS0108E detects which side is driving
  • Machine pin contacts use the medium-pitch Adom contact system for plug-in integration with baseboards

Fusion 360 Cloud Location

Main > Molecules > XRP > TimeOfFlightVL53L8 > TXS0108E_8bitLevelShifter.fprj

Export Files

Available in the Fusion 360 Output folder on Google Drive:

  • TXS0108E_8bitLevelShifter v23.brd — EAGLE board file
  • TXS0108E_8bitLevelShifter v14.sch — Schematic file
  • TXS0108E_8bitLevelShifter v23.f3d — Fusion 360 archive (3D)
  • TXS0108E_8bitLevelShifter v23.usdz — 3D model for AR/Hydrogen
  • Silkscreen top/bottom PNGs
  • board_parts.json, board_outline.json, board_netlist.json

Files