The Seeed Studio RS-485 Breakout Board is a versatile RS-485 expansion designed for all Seeed Studio XIAO development boards. Equipped with the TP8485E transceiver IC, this breakout board efficiently converts UART serial streams to RS-485 signals. Operating as a half-duplex transceiver, the TP8485E enables unidirectional communication, spanning distances of up to 1200 meters. This breakout board is engineered for efficiency, consuming power from a single 5V or 12VDC power source. Its RS-485 output is facilitated through 3-pin terminals for both signal wires and power connections. These features collectively make it an ideal choice for robust data transmission across extensive distances and in challenging, high-noise environments.

555 Type, Timer/Oscillator (Single) IC 2.1MHz 8-PDIP The TLC555 is a CMOS monolithic timing circuit. The timer is fully compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2MHz. Because of a high input impedance, this device supports smaller timing capacitors than those supported by the NE555 or LM555. As a result, more accurate time delays and oscillations are possible. Power consumption is low across the full range of power-supply voltage. • Very low power consumption: – 1mW typical at VDD = 5V • Capable of operation in astable mode • CMOS output capable of swinging rail to rail • High output current capability – Sink: 100mA typical – Source: 10mA typical • Output fully compatible with CMOS, TTL, and MOS • Low supply current reduces spikes during output transitions • Single-supply operation from 2V to 15V • Functionally interchangeable with the NE555; has same pinout • ESD protection exceeds 1000V per ANSI/ESDA/ JEDEC JS-001 • Available in Q-temp automotive – High-reliability automotive applications – Configuration control and print support – Qualification to automotive standards #CommonPartsLibrary #IntegratedCircuit

555 Type, Timer/Oscillator (Single) IC 2.1MHz 8-PDIP Like the NE555, the TLC555 has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage terminal (CONT). When the trigger input (TRIG) falls below the trigger level, the flip-flop is set and the output goes high. If TRIG is above the trigger level and the threshold input (THRES) is above the threshold level, the flip-flop is reset and the output is low. The reset input (RESET) can override all other inputs and can be used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path is provided between the discharge terminal (DISCH) and GND. All unused inputs must be tied to an appropriate logic level to prevent false triggering. • Very low power consumption: – 1mW typical at VDD = 5V • Capable of operation in astable mode • CMOS output capable of swinging rail to rail • High output current capability – Sink: 100mA typical – Source: 10mA typical • Output fully compatible with CMOS, TTL, and MOS • Low supply current reduces spikes during output transitions • Single-supply operation from 2V to 15V • Functionally interchangeable with the NE555; has same pinout • ESD protection exceeds 1000V per ANSI/ESDA/ JEDEC JS-001 • Available in Q-temp automotive – High-reliability automotive applications – Configuration control and print support – Qualification to automotive standards #CommonPartsLibrary #IntegratedCircuit

Precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. Based on Avia Semiconductor’s patented technology, HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. The input multiplexer selects either Channel A or B differential input to the low-noise programmable gain amplifier (PGA). Channel A can be programmed with a gain of 128 or 64, corresponding to a full-scale differential input voltage of ±20mV or ±40mV respectively, when a 5V supply is connected to AVDD analog power supply pin. Channel B has a fixed gain of 32. Onchip power supply regulator eliminates the need for an external supply regulator to provide analog power for the ADC and the sensor. Clock input is flexible. It can be from an external clock source, a crystal, or the on-chip oscillator that does not require any external component. On-chip poweron-reset circuitry simplifies digital interface initialization. There is no programming needed for the internal registers. All controls to the HX711 are through the pins. • Two selectable differential input channels • On-chip active low noise PGA with selectable gain of 32, 64 and 128 • On-chip power supply regulator for load-cell and ADC analog power supply • On-chip oscillator requiring no external component with optional external crystal • On-chip power-on-reset • Simple digital control and serial interface: pin-driven controls, no programming needed • Selectable 10SPS or 80SPS output data rate • Simultaneous 50 and 60Hz supply rejection • Current consumption including on-chip analog power supply regulator: normal operation < 1.5mA, power down < 1uA • Operation supply voltage range: 2.6 ~ 5.5V • Operation temperature range: -40 ~ +85℃ • 16 pin SOP-16 package #commonpartslibrary #integratedcircuit #analog #digital #converter #sensor

TC4427EOA SOIC-8_L4.9-W3.9-P1.27-LS6.0-TR LCSC Part Number: C636891 JLCPCB Part Class: Extended Part Manufactured by MICROCHIP(美国微芯) Microchip TC4426 dual high-speed MOSFET gate driver, 1.5A peak source/sink output current, 4.5V to 18V supply voltage range, matched rise and fall times, 25ns typical rise/fall time with 1000pF load, 40ns typical propagation delay, 7Ω output impedance, latch-up protected, withstands ±500mA reverse output current, accepts negative input swings up to 5V, ESD protected to 2kV, designed for driving power MOSFETs, SMPS, pulse transformers and line drivers, available in SOIC-8, PDIP-8, MSOP-8 and DFN-8 packages. Search Keywords: TC4426, TC4426CPA, TC4426COA, TC4426A, Microchip TC4426, MOSFET gate driver, dual MOSFET driver, 1.5A gate driver, high speed MOSFET driver, power MOSFET driver, gate driver IC, low side MOSFET driver, SMPS gate driver, pulse transformer driver, TC4426 SOIC-8, TC4426 DFN-8, TC4426 MSOP-8, TC4426 PDIP-8 Hashtags: #TC4426 #MicrochipTC4426 #MOSFETDriver #GateDriver #DualMOSFETDriver #15AGateDriver #PowerMOSFETDriver #HighSpeedGateDriver #LowSideDriver #SMPSDriver #PulseTransformerDriver #LineDriver #SOIC8 #MSOP8 #DFN8 #PDIP8 #Microchip #GateDriverIC #PowerElectronics #SwitchModePowerSupply

TM1814 is four channels LED constant current adjustable driver IC with function of internal control synchronizing, which can achieve a wide range of display as MCU inputs one group of data set by constant current and PWM to TM1814. When input signal is disconnected, it can realize synchronized fixation of colorful pattern change and prevent in-operation of subsequent cascade chip caused by chip damage. Internal chip is integrated with MCU solidification program and single wire digital interface, data flip-latch, LED constant current driver, circuit, etc. Internal VDD pin is integrated with 5V regulator with less peripheral devices, which applies to guardrail tube, point source and LED decorative products. This product has excellent performance and reliable quality. Features  Adopt power CMOS technology  Withstand voltage of OUT output port is 32V  5 V voltage-regulator tube is built into VDD, and the voltage supports 6-24 V after cascading the resistor  Constant current can achieve level 64 adjustment (6.5 mA-38mA)  PWM brightness controls circuit, and 256 brightness is adjustable  Accurate current output value Maximum error (between channels): ±3% Maximum error (between chips): ±5%  Single line serial concatenated port  Oscillation mode: build in RC vibration and conduct clock synchronization according to signals on data line. After receiving the data from this unit, it can reproduce follow-up data and send it to lower level through data output end, and signals will not be distorted and reduced along with cascade  Build in power on reset circuit, and after powering on reset, all registers are initialized to zero  External control mode data transmission rate is 800 KHZ  Internal control mode data transmission rate is 500 KHZ  Internal control mode chip sends 2048 points of data  Encapsulation mode: SOP8 #CommonPartsLibrary #IntegratedCircuit

Power Source Selector Module #Module This innovative module is engineered to intelligently manage and select between multiple power sources including battery (VBAT), solar (VSOLAR), USB (VUSB), and VIN. It features a robust design that ensures efficient switching, optimal power regulation, and enhanced diagnostic capabilities. With carefully selected components such as MOSFETs, resistors, LEDs, diodes, and capacitors, this module provides reliable operation across varied load conditions and complex circuit topologies. Its integrated features are perfect for applications requiring seamless transition between renewable energy sources and conventional power, making it an ideal solution for modern, energy-efficient systems. #PCBDesign #Electronics #PowerManagement #Module #CircuitDesign #RenewableEnergy

A power source which provides a constant current to a load, even despite changes and variance in load resistance