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CH9326 (SOP-16-150mil) — Symbol, Footprint IPC-7351B & 3D STEP Model

CH9326

WCHID: C77683SOP-16-150mil · 16 Pins · Pitch 1.27mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · CH9326 (SOP-16-150mil)1RSTI2TXD3RXD4T_LED5V36UD+7UD -8GND16ACT#15VCC14IO313IO412IO111IO210XO9XIGrid Pitch = 2.54mm (IEEE-315)-15.2-10.2-5.105.110.215.215.210.25.10-5.1-10.2-15.2mm
2. 2D FOOTPRINT
12345678910111213141516E=3.90mm · Pitch e=1.27mmD=9.90mm-6-5-4-3-2-1012345676543210-1-2-3-4-5-6-7mm
3. 3D CAD MODEL
Package Body: 3.90mm × 9.90mm · Pitch: 1.27mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (16/16)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1RSTII/OMultiplexed I/O & Peripheral Pin RSTI (General)
2TXDI/OMultiplexed I/O & Peripheral Pin TXD (UART)
3RXDI/OMultiplexed I/O & Peripheral Pin RXD (UART)
4T_LEDI/OMultiplexed I/O & Peripheral Pin T_LED (General)
5V3PowerRegulated Power Output (V3 — 3.3V / 5.0V Standard Logic)
6UD+I/OMultiplexed I/O & Peripheral Pin UD+ (USB)
7UD -I/OMultiplexed I/O & Peripheral Pin UD - (USB)
8GNDGNDGround Reference Pin (GND)
9XII/OMultiplexed I/O & Peripheral Pin XI (RTC/CLK)
10XOI/OMultiplexed I/O & Peripheral Pin XO (RTC/CLK)
11IO2I/OMultiplexed I/O & Peripheral Pin IO2 (General)
12IO1I/OMultiplexed I/O & Peripheral Pin IO1 (General)
13IO4I/OMultiplexed I/O & Peripheral Pin IO4 (General)
14IO3I/OMultiplexed I/O & Peripheral Pin IO3 (General)
15VCCPowerPower Supply Input (VCC — 3.3V / 5.0V Standard Logic)
16ACT#I/OMultiplexed I/O & Peripheral Pin ACT# (USB)
PIN 1 RSTI
I/O
Multiplexed I/O & Peripheral Pin RSTI (General)
Design note: External reset input active low built -in pull -up resistor , ,
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 3 Extracted Figures)

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: CH9326 (WCH · SOP-16-150mil)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
CH9326 (SOP-16-150mil) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
CH9326 (SOP-16-150mil) - 2. Standard Pinout (Top View)
True package pinout (16 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
CH9326 (SOP-16-150mil) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
CH9326 (SOP-16-150mil) - 4. Package Dimensions (D×E×A)
SOP-16-150mil · 3.90×9.90mm · Pitch 1.27mmExpand ›
5. Recommended Land PatternLAND PATTERN
CH9326 (SOP-16-150mil) - 5. Recommended Land Pattern
IPC-7351B Footprint (16 Pads)Expand ›
6. Application SchematicSCHEMATIC
CH9326 (SOP-16-150mil) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (3 figures · Page 1/1)
Showing 1–3 of 3 uncropped original figures for CH9326
P1 · p01_fig011569×477px
CH9326 (SOP-16-150mil) — 2. Features | USB | Computer | CH9326 | Client UART device UART
2. Features | USB | Computer | CH9326 | Client UART device UART
P1 · p01_fig02566×542px
CH9326 (SOP-16-150mil) — Package Width Of Plastic Pitch Of Pin Instruction Of Package Ordering Information
Package Width Of Plastic Pitch Of Pin Instruction Of Package Ordering Information
P1 · p01_fig02P1
CH9326 (SOP-16-150mil) — Datasheet Page 1 (p01_fig02)
Datasheet Page 1 (p01_fig02)

Technical Specifications & Part Details (CH9326)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:CH9326 (SOP-16-150mil) is a 16-pin standard electronic & interconnect component featuring a 9.90 × 3.90 × 1.75 mm mechanical envelope (lead pitch e = 1.27 mm). Rated for 1.8V ~ 5.5V (Theo Datasheet) supply operation across -40°C ~ +85°C (Industrial Grade) with integrated USB, UART, RTC/CLK 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
12MHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
500mA
Observe per-pin absolute maximum current limits
Package Envelope (D × E × A)D × E × A
9.90 × 3.90 × 1.75 mm (A1=0.15 mm)
Package family: SOP (SOP-16-150mil)
Pin Count & Lead PitchN / e
16 Pins | Pitch e = 1.27 mm (50.0 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
USB, UART, RTC/CLK
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 Symbol16 auto-grouped pins
OK
IPC-7351B Land Pattern16 pads · Pitch 1.27mm
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 (SOP-16-150mil)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
9.90 × 3.90 mm
Height (A) & Pitch (e)IPC-7351B
A=1.75mm · e=1.27mm
Pad Size (W × L)Level B
0.60 × 1.55 mm
Pins / Total PadsTopology
16P / 16Pad (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
SOP-16-150mil
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — CH9326 (SOP-16-150mil)

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 CH9326 (SOP-16-150mil)?

Manufactured by WCH, the CH9326 is housed in a SOP-16-150mil package with 16 pins and a 1.27 mm lead pitch. Key pins include: 1 (RSTI: Multiplexed I/O & Peripheral Pin RSTI (General)), 2 (TXD: Multiplexed I/O & Peripheral Pin TXD (UART)), 3 (RXD: Multiplexed I/O & Peripheral Pin RXD (UART)), 4 (T_LED: Multiplexed I/O & Peripheral Pin T_LED (General)), 5 (V3: Regulated Power Output (V3 — 3.3V / 5.0V Standard Logic)), 6 (UD+: Multiplexed I/O & Peripheral Pin UD+ (USB)).

What are the IPC-7351B PCB Footprint dimensions for CH9326?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), CH9326 (SOP-16-150mil) has a nominal body envelope of 3.90 × 9.90 mm, pitch e = 1.27 mm, and 16 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for CH9326?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for CH9326 (WCH, SOP-16-150mil) 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 (16 pins) & CH9326 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1RSTIDigital_IOSignal terminal RSTI (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RSTI. Supported peripheral buses: General.
2TXDDigital_IOSignal terminal TXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: TXD. Supported peripheral buses: UART.
3RXDDigital_IOSignal terminal RXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RXD. Supported peripheral buses: UART.
4T_LEDDigital_IOSignal terminal T_LED (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: T_LED. Supported peripheral buses: General.
5V3Power_OutRegulated power output rail (V3) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V).
6UD+Digital_IOSignal terminal UD+ (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UD+. Supported peripheral buses: USB.
7UD -Digital_IOSignal terminal UD - (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: UD -. Supported peripheral buses: USB.
8GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
9XIDigital_IOSignal terminal XI (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XI. Supported peripheral buses: RTC/CLK.
10XODigital_IOSignal terminal XO (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: XO. Supported peripheral buses: RTC/CLK.
11IO2Digital_IOSignal terminal IO2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO2. Supported peripheral buses: General.
12IO1Digital_IOSignal terminal IO1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO1. Supported peripheral buses: General.
13IO4Digital_IOSignal terminal IO4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO4. Supported peripheral buses: General.
14IO3Digital_IOSignal terminal IO3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO3. Supported peripheral buses: General.
15VCCPower_InPrimary positive power supply input (VCC) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V).
16ACT#Digital_IOSignal terminal ACT# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: ACT#. Supported peripheral buses: USB.
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