Mechanical Dimensions & Land Pattern (PLCC-28(11.5x11.5))
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 PLCC-28(11.5x11.5) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — TC14433AELI (PLCC-28(11.5x11.5))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of TC14433AELI (PLCC-28(11.5x11.5))?
Manufactured by MICROCHIP, the TC14433AELI is housed in a PLCC-28(11.5x11.5) package with 28 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 5V -5V. Key pins include: 1 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 2 (V AG: Multiplexed I/O & Peripheral Pin V AG (General)), 3 (VREF: Multiplexed I/O & Peripheral Pin VREF (General)), 4 (V X: Multiplexed I/O & Peripheral Pin V X (General)), 5 (R 1: Multiplexed I/O & Peripheral Pin R 1 (General)), 6 (R /C 1 1: Multiplexed I/O & Peripheral Pin R /C 1 1 (General)).
What are the IPC-7351B PCB Footprint dimensions for TC14433AELI?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), TC14433AELI (PLCC-28(11.5x11.5)) has a nominal body envelope of 11.50 × 11.50 mm, pitch e = 1.27 mm, and 28 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for TC14433AELI?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for TC14433AELI (MICROCHIP, PLCC-28(11.5x11.5)) 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 (28 pins) & TC14433 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | NC | NC | Signal terminal NC (I/O, 5V -5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 2 | V AG | Digital_IO | Signal terminal V AG (I/O, 5V -5V domain). Multiplexed alternate functions: V AG. Supported peripheral buses: General. |
| 3 | VREF | Analog | Signal terminal VREF (Analog, 5V -5V domain). Multiplexed alternate functions: VREF. Supported peripheral buses: General. |
| 4 | V X | Digital_IO | Signal terminal V X (I/O, 5V -5V domain). Multiplexed alternate functions: V X. Supported peripheral buses: General. |
| 5 | R 1 | Digital_IO | Signal terminal R 1 (I/O, 5V -5V domain). Multiplexed alternate functions: R 1. Supported peripheral buses: General. |
| 6 | R /C 1 1 | Digital_IO | Signal terminal R /C 1 1 (I/O, 5V -5V domain). Multiplexed alternate functions: R /C 1 1. Supported peripheral buses: General. |
| 7 | C 1 | Digital_IO | Signal terminal C 1 (I/O, 5V -5V domain). Multiplexed alternate functions: C 1. Supported peripheral buses: General. |
| 8 | NC | NC | Signal terminal NC (I/O, 5V -5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 9 | CO 1 | Digital_IO | Signal terminal CO 1 (I/O, 5V -5V domain). Multiplexed alternate functions: CO 1. Supported peripheral buses: General. |
| 10 | CO 2 | Digital_IO | Signal terminal CO 2 (I/O, 5V -5V domain). Multiplexed alternate functions: CO 2. Supported peripheral buses: General. |
| 11 | DU | Digital_IO | Signal terminal DU (I/O, 5V -5V domain). Multiplexed alternate functions: DU. Supported peripheral buses: General. |
| 12 | CLK 1 | Digital_IO | Signal terminal CLK 1 (I/O, 5V -5V domain). Multiplexed alternate functions: CLK 1. Supported peripheral buses: General. |
| 13 | CLK 0 | Digital_IO | Signal terminal CLK 0 (I/O, 5V -5V domain). Multiplexed alternate functions: CLK 0. Supported peripheral buses: CAN. |
| 14 | V EE | Digital_IO | Signal terminal V EE (I/O, 5V -5V domain). Multiplexed alternate functions: V EE. Supported peripheral buses: General. |
| 15 | NC | NC | Signal terminal NC (I/O, 5V -5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 16 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 17 | EOC | Digital_IO | Signal terminal EOC (I/O, 5V -5V domain). Multiplexed alternate functions: EOC. Supported peripheral buses: General. |
| 18 | OR | Digital_IO | Signal terminal OR (I/O, 5V -5V domain). Multiplexed alternate functions: OR. Supported peripheral buses: General. |
| 19 | DS 4 | Digital_IO | Signal terminal DS 4 (I/O, 5V -5V domain). Multiplexed alternate functions: DS 4. Supported peripheral buses: General. |
| 20 | DS 3 | Digital_IO | Signal terminal DS 3 (I/O, 5V -5V domain). Multiplexed alternate functions: DS 3. Supported peripheral buses: General. |
| 21 | DS 2 | Digital_IO | Signal terminal DS 2 (I/O, 5V -5V domain). Multiplexed alternate functions: DS 2. Supported peripheral buses: General. |
| 22 | NC | NC | Signal terminal NC (I/O, 5V -5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 23 | DS 1 | Digital_IO | Signal terminal DS 1 (I/O, 5V -5V domain). Multiplexed alternate functions: DS 1. Supported peripheral buses: General. |
| 24 | Q 0 | Digital_IO | Signal terminal Q 0 (I/O, 5V -5V domain). Multiplexed alternate functions: Q 0. Supported peripheral buses: General. |
| 25 | Q 1 | Digital_IO | Signal terminal Q 1 (I/O, 5V -5V domain). Multiplexed alternate functions: Q 1. Supported peripheral buses: General. |
| 26 | Q 2 | Digital_IO | Signal terminal Q 2 (I/O, 5V -5V domain). Multiplexed alternate functions: Q 2. Supported peripheral buses: General. |
| 27 | Q 3 | Digital_IO | Signal terminal Q 3 (I/O, 5V -5V domain). Multiplexed alternate functions: Q 3. Supported peripheral buses: General. |
| 28 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 5V -5V domain (Max rating: 5.0V). |







