The Interactive Database for
Pinouts & Hardware Diagrams.
Interactive diagrams, pin functions and links to technical datasheets for microcontrollers, dev boards, and ICs at a glance.
All Boards, Chips & Connectors
Development platforms, microcontrollers, ICs and standard interfaces
2N3906 PNP General-Purpose Bipolar Transistor
Widely used general-purpose PNP bipolar junction transistor for medium-speed switching and amplification. Max -40V, -200mA, 625mW. Complementary pair to 2N3904 (NPN).
3.5mm TRRS 4-Pole Audio/Headset Jack
Standard 3.5mm (1/8") 4-conductor miniature audio connector for stereo audio output and microphone input (CTIA standard: Left, Right, Ground, Mic).
74HC595 8-Bit Serial-In / Parallel-Out Shift Register
8-bit serial-input / parallel-output shift register with 3-state outputs. Data is clocked in serially on SRCLK, then latched to the output pins on a rising edge of RCLK. Commonly chained for expanding digital outputs over SPI.
ATmega328P 8-Bit AVR Microcontroller
High performance, low power 8-bit AVR RISC-based microcontroller with 32KB flash, standard on Arduino Nano and Uno.
ATtiny13 8-Bit AVR Microcontroller (DIP-8)
20MHz, 1kB Flash, 64B SRAM, 64B EEPROM, debugWIRE, DIP-8
Apple Lightning Connector
Proprietary 8-pin reversible connector used for Apple iOS devices (iPhone, iPad, iPod) carrying power (VBUS), high-speed differential USB data, and accessory control signals.
CD4011B Quad 2-Input NAND Gate
Quad 2-input NAND gate in CMOS logic. 3–18V supply. Each gate output is the inverted AND of its two inputs. Pin-compatible with 74HC00.
CD4060B CMOS 14-Stage Binary Ripple Counter with Oscillator
14-stage ripple-carry binary counter/divider and oscillator with built-in RC/crystal oscillator section, capable of high-ratio frequency division and long timing delays.
CP2102N USB to UART Bridge Controller
USB to UART master bridge, QFN-24
EPS12V 8-Pin CPU Power Connector
Standard 8-pin EPS12V motherboard power connector delivering high-current +12V DC power directly to the CPU VRM voltage regulator module (up to 336W).
HD44780 1602 / 2004 Character LCD Interface
Industry standard 16-pin interface for dot-matrix alphanumeric LCD modules (16x2, 20x4) based on the Hitachi HD44780 controller, supporting 4-bit and 8-bit parallel modes.
L293D Quadruple Half-H Drivers with Internal Flyback Diodes
Quadruple Half-H motor driver IC with internal flyback protection diodes, providing four independently controlled half-bridge outputs rated 600mA each. The D suffix indicates built-in suppression diodes, no external diodes needed for inductive loads.
LM337 Adjustable Negative Voltage Regulator
Negative 1.5A 35V Adjustable Linear Regulator, TO-220
LM35 Precision Centigrade Temperature Sensor (TO-92)
Precision centigrade temperature sensor, TO-92
LM7905 Negative Voltage Regulator
Negative 1A 35V Linear Regulator, Fixed Output -5V, TO-220
Frequently Asked Questions & Transparency
Helpful information about data sources, usage, and privacy
Where does the pinout data and technical specification come from?
The pinout data and technical specifications are based on official manufacturer datasheets as well as publicly available documentation and community resources. As PinoutDatabase is an independent project maintained by me as an individual, I strive for high accuracy, though inadvertent mistakes can still happen.
Can I use the graphics and how are they created?
The SVG vector files and PNG graphics are free to download and use for private/personal purposes. Depending on the component, the diagrams are either crafted manually or generated automatically based on package footprint and pin definitions.
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