NXP USA Inc. MCZ33905CS3EK

The 33905S combines a microcontroller supply regulator, high-speed CAN transceiver, single LIN transceiver, watchdog, wake-up resources and fail-safe functions in one automotive system basis chip. The CS3EK code denotes the C-version, 3.3 V VDD option and 32-pin exposed package. It is intended to consolidate essential power and communication functions around a vehicle control microcontroller.

LCDChip's original record describes 32-SSOP (0.295 inch, 7.50 mm width) Exposed Pad, normalized by the package workbook to 32-SSOP Exposed Pad. DigiKey identifies the supplier package as 32-SOIC-EP, while NXP identifies the 33905S package as a 32-pin exposed SOIC, SOT1746-3 in its current family table. These naming layers require a drawing-level footprint check for the exact legacy CS3EK device.

Mechanical checks

• Confirm the NXP drawing and land pattern for the exact device.
• Check exposed-pad grounding and thermal layout.
• Verify pin-one orientation and the difference between catalog case and supplier package names.

The registered JPG is currently missing locally. Add and inspect the image before publication.

The named signals below follow NXP's 33905S 32-pin connection diagram and family pin-definition table. Use the manufacturer's numbered top-view drawing for PCB placement.

Some pin functions are multiplexed or mode-dependent. Confirm register configuration and the exact numbered pin assignment before wiring.

The LIN electrical-characteristics conditions are not a universal operating-voltage specification for every integrated block. Apply the full data-sheet limits, thermal derating and external-component rules to the final design.

NXP's current family table recommends the 33905 D-version for new designs and states that the C and D versions have no electrical-parameter specification changes, but the D version includes quality improvements. MCZ33905DS3EK exists in the LCDChip catalog as a distinct unpublished product. It still requires confirmation of order-code packaging, qualification, software behavior and customer approval; no automatic drop-in claim is made.

MCZ33905CS5EK and MCZ33904C3EK also exist as distinct unpublished LCDChip models. The former has a 5.0 V rather than 3.3 V VDD option; the latter belongs to a different family configuration. Neither is a direct replacement without MCU rail, CAN/LIN, wake-input, pinout and safety analysis. No internal links are inserted to these unpublished entries.

NXP Semiconductors maintains the MC33903/MC33904/MC33905 family data sheet and an exact MCZ33905CS3EK product record. The current data-sheet revision removes legacy C-version order codes from its ordering table and directs new designs toward the D revision. Procurement of this obsolete exact model should include date-code, authenticity and lifecycle checks.

Verify the complete MCZ33905CS3EK marking, exposed-pad package, tube packaging, date code and manufacturer traceability. Obsolete or last-stock devices need heightened authenticity review. Match the actual package and electrical revision to the previously approved ECU bill of materials; an illustrative JPG is not sufficient proof.

Use NXP's current family data sheet, package drawing, errata and product-change notices for engineering sign-off. Check the legacy C-version against the D-version before any redesign. Distributor stock and tier prices must be confirmed from a fresh exact-part quote before synchronization; the registered package JPG is missing, so this product must remain unpublished pending review.