Mechanical Dimensions & Land Pattern (TSSOP-20)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit TSSOP-20 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — VSC8115XYA-05-T (TSSOP-20)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of VSC8115XYA-05-T (TSSOP-20)?
Manufactured by MICROCHIP, the VSC8115XYA-05-T is housed in a TSSOP-20 package with 20 pins and a 0.65 mm lead pitch. Key pins include: 1 (VDDA: Power Supply Input (VDDA — 3.3V / 5.0V Standard Logic)), 2 (DATAIN+: Multiplexed I/O & Peripheral Pin DATAIN+ (General)), 3 (DATAIN-: Multiplexed I/O & Peripheral Pin DATAIN- (General)), 4 (VSSA: Ground Reference Pin (VSSA)), 5 (LOCKDET: Multiplexed I/O & Peripheral Pin LOCKDET (General)), 6 (STS12: Multiplexed I/O & Peripheral Pin STS12 (General)).
What are the IPC-7351B PCB Footprint dimensions for VSC8115XYA-05-T?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), VSC8115XYA-05-T (TSSOP-20) has a nominal body envelope of 4.40 × 6.50 mm, pitch e = 0.65 mm, and 20 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for VSC8115XYA-05-T?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for VSC8115XYA-05-T (MICROCHIP, TSSOP-20) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (20 pins) & VSC8115 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | VDDA | Power_In | Primary positive power supply input (VDDA) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 2 | DATAIN+ | Digital_IO | Signal terminal DATAIN+ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: DATAIN+. Supported peripheral buses: General. |
| 3 | DATAIN- | Digital_IO | Signal terminal DATAIN- (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: DATAIN-. Supported peripheral buses: General. |
| 4 | VSSA | GND | 0V electrical ground return terminal (VSSA) for internal core logic, I/O drivers, and analog sub-blocks. |
| 5 | LOCKDET | Digital_IO | Signal terminal LOCKDET (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LOCKDET. Supported peripheral buses: General. |
| 6 | STS12 | Digital_IO | Signal terminal STS12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: STS12. Supported peripheral buses: General. |
| 7 | REFCLK | Digital_IO | Signal terminal REFCLK (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: REFCLK. Supported peripheral buses: General. |
| 8 | LOCKREFN | Digital_IO | Signal terminal LOCKREFN (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LOCKREFN. Supported peripheral buses: General. |
| 9 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 10 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 11 | CLKOUT- | Digital_IO | Signal terminal CLKOUT- (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CLKOUT-. Supported peripheral buses: General. |
| 12 | CLKOUT+ | Digital_IO | Signal terminal CLKOUT+ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CLKOUT+. Supported peripheral buses: General. |
| 13 | DATAOUT- | Digital_IO | Signal terminal DATAOUT- (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: DATAOUT-. Supported peripheral buses: General. |
| 14 | DATAOUT+ | Digital_IO | Signal terminal DATAOUT+ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: DATAOUT+. Supported peripheral buses: General. |
| 15 | SD | Digital_IO | Signal terminal SD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SD. Supported peripheral buses: General. |
| 16 | BYPASS | Digital_IO | Signal terminal BYPASS (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: BYPASS. Supported peripheral buses: General. |
| 17 | CAP- | Digital_IO | Signal terminal CAP- (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CAP-. Supported peripheral buses: General. |
| 18 | CAP+ | Digital_IO | Signal terminal CAP+ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CAP+. Supported peripheral buses: General. |
| 19 | VSSA | GND | 0V electrical ground return terminal (VSSA) for internal core logic, I/O drivers, and analog sub-blocks. |
| 20 | VDDA | Power_In | Primary positive power supply input (VDDA) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
