24LCS21A/P (PDIP-8) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Q: What is the Pinout and operating voltage specification of 24LCS21A/P (PDIP-8)?

Manufactured by MICROCHIP, the 24LCS21A/P is housed in a PDIP-8 package with 8 pins and a 2.54 mm lead pitch, supporting a VCC supply range of 2.5V to 5.5V. Key pins include: 1 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 2 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 3 (WP#: Multiplexed I/O & Peripheral Pin WP# (General)), 4 (Vss: Ground Reference Pin (Vss)), 5 (SDA: Multiplexed I/O & Peripheral Pin SDA (I2C)), 6 (SCL: Multiplexed I/O & Peripheral Pin SCL (I2C)).

Q: What are the IPC-7351B PCB Footprint dimensions for 24LCS21A/P?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), 24LCS21A/P (PDIP-8) has a nominal body envelope of 6.35 × 9.62 mm, pitch e = 2.54 mm, and 8 copper pads.

Q: Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for 24LCS21A/P?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for 24LCS21A/P (MICROCHIP, PDIP-8) 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.

1. SYMBOL

2. 2D FOOTPRINT

3. 3D CAD MODEL

Package Body: 6.35mm × 9.62mm · Pitch: 2.54mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (8/8)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D

Pin	Symbol	Type	Function (EN)
1	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
2	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
3	WP#	I/O	Multiplexed I/O & Peripheral Pin WP# (General)
4	Vss	GND	Ground Reference Pin (Vss)
5	SDA	I/O	Multiplexed I/O & Peripheral Pin SDA (I2C)
6	SCL	I/O	Multiplexed I/O & Peripheral Pin SCL (I2C)
7	VCLK	I/O	Multiplexed I/O & Peripheral Pin VCLK (General)
8	Vcc	Power	Power Supply Input (Vcc — 2.5V to 5.5V)

PIN 1 NC

I/O

Multiplexed I/O & Peripheral Pin NC (General)

Design note: Signal terminal NC (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.

IPC-7351B Solder Density & Span C/G/Z Tuner

Extracted Drawings Gallery (6 Standard Drawings + 8 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen

1. Realistic 3D PackageREPRESENTATIVE

24LCS21A/P (PDIP-8) - 1. Realistic 3D Package

Detailed solid 3D bodyExpand ›

2. Standard Pinout (Top View)CLEANROOM PINOUT

24LCS21A/P (PDIP-8) - 2. Standard Pinout (Top View)

True package pinout (8 pins)Expand ›

3. Original Datasheet PinoutPDF PINOUT

24LCS21A/P (PDIP-8) - 3. Original Datasheet Pinout

Uncropped datasheet pin diagramExpand ›

4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS

24LCS21A/P (PDIP-8) - 4. Package Dimensions (D×E×A)

PDIP-8 · 6.35×9.62mm · Pitch 2.54mmExpand ›

5. Recommended Land PatternLAND PATTERN

24LCS21A/P (PDIP-8) - 5. Recommended Land Pattern

IPC-7351B Footprint (8 Pads)Expand ›

6. Application SchematicSCHEMATIC

24LCS21A/P (PDIP-8) - 6. Application Schematic

Typical Application SchematicExpand ›

Original Datasheet Pinouts & Technical Drawings (8 figures · Page 1/1)

Showing 1–8 of 8 uncropped original figures for 24LCS21A/P / 24LCS21A

P1 · p01_fig011777×662px

P1 · p01_fig03867×979px

SCL Serial Clock (Bidirectional mode)

P1 · p01_fig041778×932px

Page Latches

P1 · p01_fig04P1

Datasheet Page 1 (p01_fig04)

P18 · p18_fig011616×805px

2. How does this document meet your hardware and software development needs?

P19 · p19_fig011779×2637px

24LCS21A/P (PDIP-8) — © 2007 Microchip Technology Inc. DS21161H-page 19 | Trademarks | AmpLab, FilterLab, Linear Active Thermistor, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Micro

© 2007 Microchip Technology Inc. DS21161H-page 19 | Trademarks | AmpLab, FilterLab, Linear Active Thermistor, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Micro

P19 · p19_fig02782×281px

24LCS21A/P (PDIP-8) — © 2007 Microchip Technology Inc. DS21161H-page 19

P1 · p01_fig02All Packages in PDF

Memory Control

Technical Specifications & Part Details (24LCS21A/P)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)

Standard Electronic & Interconnect Component

Detailed Overview:24LCS21A/P (PDIP-8) is a 8-pin standard electronic & interconnect component featuring a 9.62 × 6.35 × 4.50 mm mechanical envelope (lead pitch e = 2.54 mm). Rated for 2.5V to 5.5V supply operation across -40°C to +70°C with integrated I2C interfaces.

Operating Supply VoltageV_CC / V_DD

2.5V to 5.5V

Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins

Ambient Operating TemperatureT_A

-40°C to +70°C

Industrial temperature grade; T_J(max) = +125°C

Clock / RF Operating Frequencyf_CLK / f_RF

100 kHz

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

9.62 × 6.35 × 4.50 mm (A1=0.51 mm)

Package family: DIP (PDIP-8)

Pin Count & Lead PitchN / e

8 Pins | Pitch e = 2.54 mm (100.0 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 Symbol8 auto-grouped pins

IPC-7351B Land Pattern8 pads · Pitch 2.54mm

IPC-7525 60% Solder PasteReflow 1:1 Standard

DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm

3D STEP AP214 & GLBAligned coordinate origin (0,0,0)

Hardware Verification & Community Engineering Reviews

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

5.00 PCB Verified

IPC-7351B

Family Variants & Same Datasheet Chips — 24LCS21A/P / 24LCS21A (2)

Select package variant or sibling MPN sharing this datasheet

PDIP-8 · 8P

24LCS21A/P

MICROCHIP·PDIP-8

IPC-7351B

8P9.6×6.3×4.50mmP=2.54mm

24LCS21A/P / 24LCS21A (PDIP-8)

SOIC-8 · 8P

24LCS21A-I/SN

MICROCHIP·SOIC-8

IPC-7351B

8P4.9×3.9×1.75mmP=1.27mm

24LCS21A/P / 24LCS21A (SOIC-8)

Mechanical Dimensions & Land Pattern (PDIP-8)

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

9.62 × 6.35 mm

Height (A) & Pitch (e)IPC-7351B

A=4.50mm · e=2.54mm

Pad Size (W × L)Level B

1.60 × 1.60 mm

Pins / Total PadsTopology

8P / 8Pad (THT_DIP)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives

DFM READY

Designator / Replacement MPN	Value / Package	Function & PCB Layout Rule
N/A BOM	Per application circuit PDIP-8	Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — 24LCS21A/P (PDIP-8)

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 24LCS21A/P (PDIP-8)?

Manufactured by MICROCHIP, the 24LCS21A/P is housed in a PDIP-8 package with 8 pins and a 2.54 mm lead pitch, supporting a VCC supply range of 2.5V to 5.5V. Key pins include: 1 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 2 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 3 (WP#: Multiplexed I/O & Peripheral Pin WP# (General)), 4 (Vss: Ground Reference Pin (Vss)), 5 (SDA: Multiplexed I/O & Peripheral Pin SDA (I2C)), 6 (SCL: Multiplexed I/O & Peripheral Pin SCL (I2C)).

What are the IPC-7351B PCB Footprint dimensions for 24LCS21A/P?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), 24LCS21A/P (PDIP-8) has a nominal body envelope of 6.35 × 9.62 mm, pitch e = 2.54 mm, and 8 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for 24LCS21A/P?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for 24LCS21A/P (MICROCHIP, PDIP-8) 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 (8 pins) & 24LCS21A/P / 24LCS21A Family VariantsExpand static table

Pin #	Signal Name	Electrical Type	Functional Description & Design Notes
1	NC	NC	Signal terminal NC (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
2	NC	NC	Signal terminal NC (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
3	WP#	Digital_IO	Signal terminal WP# (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: WP#. Supported peripheral buses: General.
4	Vss	GND	0V electrical ground return terminal (Vss) for internal core logic, I/O drivers, and analog sub-blocks.
5	SDA	Digital_IO	Signal terminal SDA (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: SDA. Supported peripheral buses: I2C.
6	SCL	Digital_IO	Signal terminal SCL (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: SCL. Supported peripheral buses: I2C.
7	VCLK	Digital_IO	Signal terminal VCLK (I/O, 2.5V to 5.5V domain). Multiplexed alternate functions: VCLK. Supported peripheral buses: General.
8	Vcc	Power_In	Primary positive power supply input (Vcc) operating in the 2.5V to 5.5V domain (Max rating: 5.5V).

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