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PCA9685PW,118 (TSSOP-28) — Symbol, Footprint IPC-7351B & 3D STEP Model

PCA9685PW,118

NXPID: C2678753TSSOP-28 · 28 Pins · Pitch 0.65mmIPC TOLERANCE VARIATION5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · PCA9685PW,118 (TSSOP-28)1A02A13A24A35A46LED07LED18LED29LED310LED411LED512LED613LED714VSS28VDD27SDA26SCL25EXTCLK24A523OE#22LED1521LED1420LED1319LED1218LED1117LED1016LED915LED8Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.822.917.812.77.62.5-2.5-7.6-12.7-17.8-22.9mm
2. 2D FOOTPRINT
12345678910111213141516171819202122232425262728E=4.40mm · Pitch e=0.65mmD=9.70mm-6-5-4-3-2-1012345676543210-1-2-3-4-5-6-7mm
3. 3D CAD MODEL
Package Body: 4.40mm × 9.70mm · Pitch: 0.65mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (28/28)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1A0I/OMultiplexed I/O & Peripheral Pin A0 (General)
2A1I/OMultiplexed I/O & Peripheral Pin A1 (General)
3A2I/OMultiplexed I/O & Peripheral Pin A2 (General)
4A3I/OMultiplexed I/O & Peripheral Pin A3 (General)
5A4I/OMultiplexed I/O & Peripheral Pin A4 (General)
6LED0I/OMultiplexed I/O & Peripheral Pin LED0 (General)
7LED1I/OMultiplexed I/O & Peripheral Pin LED1 (General)
8LED2I/OMultiplexed I/O & Peripheral Pin LED2 (General)
9LED3I/OMultiplexed I/O & Peripheral Pin LED3 (General)
10LED4I/OMultiplexed I/O & Peripheral Pin LED4 (General)
11LED5I/OMultiplexed I/O & Peripheral Pin LED5 (General)
12LED6I/OMultiplexed I/O & Peripheral Pin LED6 (General)
13LED7I/OMultiplexed I/O & Peripheral Pin LED7 (General)
14VSSGNDGround Reference Pin (VSS)
15LED8I/OMultiplexed I/O & Peripheral Pin LED8 (General)
16LED9I/OMultiplexed I/O & Peripheral Pin LED9 (General)
17LED10I/OMultiplexed I/O & Peripheral Pin LED10 (General)
18LED11I/OMultiplexed I/O & Peripheral Pin LED11 (General)
19LED12I/OMultiplexed I/O & Peripheral Pin LED12 (General)
20LED13I/OMultiplexed I/O & Peripheral Pin LED13 (General)
21LED14I/OMultiplexed I/O & Peripheral Pin LED14 (General)
22LED15I/OMultiplexed I/O & Peripheral Pin LED15 (General)
23OE#I/OMultiplexed I/O & Peripheral Pin OE# (General)
24A5I/OMultiplexed I/O & Peripheral Pin A5 (General)
25EXTCLKI/OMultiplexed I/O & Peripheral Pin EXTCLK (General)
26SCLI/OMultiplexed I/O & Peripheral Pin SCL (I2C)
27SDAI/OMultiplexed I/O & Peripheral Pin SDA (I2C)
28VDDPowerPower Supply Input (VDD — 3.3V / 5.0V Standard Logic)
PIN 1 A0
I/O
Multiplexed I/O & Peripheral Pin A0 (General)
Design note: Signal terminal A0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A0. Supported peripheral buses: General.
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: PCA9685PW,118 (NXP · TSSOP-28)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
PCA9685PW,118 (TSSOP-28) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
PCA9685PW,118 (TSSOP-28) - 2. Standard Pinout (Top View)
True package pinout (28 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
PCA9685PW,118 (TSSOP-28) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
PCA9685PW,118 (TSSOP-28) - 4. Package Dimensions (D×E×A)
TSSOP-28 · 4.40×9.70mm · Pitch 0.65mmExpand ›
5. Recommended Land PatternLAND PATTERN
PCA9685PW,118 (TSSOP-28) - 5. Recommended Land Pattern
IPC-7351B Footprint (28 Pads)Expand ›
6. Application SchematicSCHEMATIC
PCA9685PW,118 (TSSOP-28) - 6. Application Schematic
Typical Application SchematicExpand ›

Technical Specifications & Part Details (PCA9685PW,118)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:PCA9685PW,118 (TSSOP-28) is a 28-pin standard electronic & interconnect component featuring a 9.70 × 4.40 × 1.20 mm mechanical envelope (lead pitch e = 0.65 mm). Rated for 1.8V ~ 5.5V (Theo Datasheet) supply operation across -40°C ~ +85°C (Industrial Grade) with integrated I2C interfaces.
Operating Supply VoltageV_CC / V_DD
1.8V ~ 5.5V (Theo Datasheet)
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C ~ +85°C (Industrial Grade)
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
DC / Broadband Passive
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
Observe per-pin absolute maximum current limits
Package Envelope (D × E × A)D × E × A
9.70 × 4.40 × 1.20 mm (A1=0.00 mm)
Package family: TSSOP (TSSOP-28)
Pin Count & Lead PitchN / e
28 Pins | Pitch e = 0.65 mm (25.6 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
I2C
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export
5/5 PASS
IEEE-315 Symbol28 auto-grouped pins
OK
IPC-7351B Land Pattern28 pads · Pitch 0.65mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (TSSOP-28)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
9.70 × 4.40 mm
Height (A) & Pitch (e)IPC-7351B
A=1.00mm · e=0.65mm
Pad Size (W × L)Level B
0.42 × 1.45 mm
Pins / Total PadsTopology
28P / 28Pad (DUAL_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
TSSOP-28
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — PCA9685PW,118 (TSSOP-28)

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats
IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of PCA9685PW,118 (TSSOP-28)?

Manufactured by NXP, the PCA9685PW,118 is housed in a TSSOP-28 package with 28 pins and a 0.65 mm lead pitch. Key pins include: 1 (A0: Multiplexed I/O & Peripheral Pin A0 (General)), 2 (A1: Multiplexed I/O & Peripheral Pin A1 (General)), 3 (A2: Multiplexed I/O & Peripheral Pin A2 (General)), 4 (A3: Multiplexed I/O & Peripheral Pin A3 (General)), 5 (A4: Multiplexed I/O & Peripheral Pin A4 (General)), 6 (LED0: Multiplexed I/O & Peripheral Pin LED0 (General)).

What are the IPC-7351B PCB Footprint dimensions for PCA9685PW,118?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), PCA9685PW,118 (TSSOP-28) has a nominal body envelope of 4.40 × 9.70 mm, pitch e = 0.65 mm, and 28 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for PCA9685PW,118?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for PCA9685PW,118 (NXP, TSSOP-28) 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) & PCA9685 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1A0Digital_IOSignal terminal A0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A0. Supported peripheral buses: General.
2A1Digital_IOSignal terminal A1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A1. Supported peripheral buses: General.
3A2Digital_IOSignal terminal A2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A2. Supported peripheral buses: General.
4A3Digital_IOSignal terminal A3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A3. Supported peripheral buses: General.
5A4Digital_IOSignal terminal A4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A4. Supported peripheral buses: General.
6LED0Digital_IOSignal terminal LED0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED0. Supported peripheral buses: General.
7LED1Digital_IOSignal terminal LED1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED1. Supported peripheral buses: General.
8LED2Digital_IOSignal terminal LED2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED2. Supported peripheral buses: General.
9LED3Digital_IOSignal terminal LED3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED3. Supported peripheral buses: General.
10LED4Digital_IOSignal terminal LED4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED4. Supported peripheral buses: General.
11LED5Digital_IOSignal terminal LED5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED5. Supported peripheral buses: General.
12LED6Digital_IOSignal terminal LED6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED6. Supported peripheral buses: General.
13LED7Digital_IOSignal terminal LED7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED7. Supported peripheral buses: General.
14VSSGND0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks.
15LED8Digital_IOSignal terminal LED8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED8. Supported peripheral buses: General.
16LED9Digital_IOSignal terminal LED9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED9. Supported peripheral buses: General.
17LED10Digital_IOSignal terminal LED10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED10. Supported peripheral buses: General.
18LED11Digital_IOSignal terminal LED11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED11. Supported peripheral buses: General.
19LED12Digital_IOSignal terminal LED12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED12. Supported peripheral buses: General.
20LED13Digital_IOSignal terminal LED13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED13. Supported peripheral buses: General.
21LED14Digital_IOSignal terminal LED14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED14. Supported peripheral buses: General.
22LED15Digital_IOSignal terminal LED15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: LED15. Supported peripheral buses: General.
23OE#Digital_IOSignal terminal OE# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: OE#. Supported peripheral buses: General.
24A5Digital_IOSignal terminal A5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A5. Supported peripheral buses: General.
25EXTCLKDigital_IOSignal terminal EXTCLK (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: EXTCLK. Supported peripheral buses: General.
26SCLDigital_IOSignal terminal SCL (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SCL. Supported peripheral buses: I2C.
27SDADigital_IOSignal terminal SDA (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: SDA. Supported peripheral buses: I2C.
28VDDPower_InPrimary positive power supply input (VDD) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V).
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