SN74LS20N  

The Texas Instruments SN74LS20N is a 2-channel, 4-input, 4.75V to 5.25V bipolar and non-gate that contains two independent 4-input NAND gates. The SN74LS20N is rated to operate over the temperature range of 0°C to 70°C.

Main applications: digital circuits, microcontroller systems, etc.

ISL3172EIBZ-T  

Renesas Electronics ISL3172EIBZ-T is a single transceiver with ±15kV IEC61000 ESD protection, 3.3V power supply, and meets both RS-485 and RS-422 balanced communication standards. These devices have very low bus currents (+125μA/-100μA), so they provide a true "1/8 unit load" for the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification's 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, an RS-485 network is used to route individual meter reads to a concentrator, so the high number of nodes allowed minimizes the number of repeaters required. Receiver (Rx) inputs are designed to be "fully fail-safe", ensuring a logical high Rx output if the Rx input is floating, shorted or terminated but not driven. Hot-swap circuitry ensures that the Tx and Rx outputs remain high impedance when the power supply is stable.

Main applications: AC servo solutions, precision industrial temperature control, automatic utility meter reading systems, high node count systems, fieldbus networks, security camera networks, building environmental control/lighting systems, industrial/process control networks

STM32F103CBT6  

STMicroelectronics STM32F103CBT6 is a mainstream enhanced Arm® Cortex-M3 MCU with 128 KB Flash, 72 MHz CPU, motor control, USB and CAN.

Key applications: motor drives, application control, medical and handheld devices, PC and gaming peripherals, GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, HVA

ADG4612BRUZ-R7  

The ADG4612BRUZ-REEL7 has four independent single-pole, single-throw (SPST) switches built in. the ADG4612BRUZ-REEL7 switches turn on when the associated control input is a logic 1.

When there is no power, the switches remain off and the switch inputs are in a high resistance state. This ensures that no current is flowing and protects the switch from damage. This feature is useful for applications where an analog signal may be present at the switch input before power is turned on, or for applications where the user has no control over the power timing.

In the off state, signal levels of up to 16V can be blocked. In addition, if the analog input signal level is VT higher than VDD, the switch will also be disconnected.

These switches have an ultra-low on-resistance characteristic, making them an ideal solution for data acquisition and gain switching applications where low on-resistance and low distortion performance are critical. The on-resistance curve is very flat over the entire analog input range, ensuring excellent linearity and low distortion performance when switching audio signals.

Key applications: hot-swap applications, data acquisition systems, battery-powered systems, automated test equipment, communication systems, relay replacement solutions

DG445DY-T1-E3 

The Vishay DG445DY-T1-E3 is a four-channel single-blade, single-throw CMOS analog switch designed to provide high-speed, low-error switching of analog signals.The DG445DY-T1-E3 features a normally open function.The DG445DY-T1-E3 combines low power consumption (22 nW, typical) with high speed (tON: 120 ns, typical), making it ideal for upgrading DG211, DG212 slots. Charge injection on the drain is minimized for use in sample and hold circuits.

Main applications: Audio switching, battery-powered systems, data acquisition, sample-and-hold circuits, telecommunication systems, automatic test equipment, single-supply circuits, hard disk drives

SMBJ22A 

The LITTELFUSE SMBJ22A is a transient voltage suppression diode, which is specifically designed by SMBJ to protect sensitive electronic equipment from voltage transients caused by lightning and other transient voltage events.

Main applications: Computer, industrial, and consumer electronics applications

TLE7368-3E 

The TLE7368-3E is a multi-function power supply circuit designed for automotive power systems using standard 12 V batteries. The device is designed to power and monitor the next generation 32-bit microcontroller family of devices (13 μm lithography) that require 5 V, 3.3 V or 1.3 V voltages. The regulator follows the previous generation TLE6368 design, where the pre-regulator output is used as the input to the microcontroller linear power supply. Specifically, the TLE7368-3E cascades the buck converter with a linear regulator and voltage follower to achieve extremely low power loss.

Main Applications: Automotive Powertrain

SN74LVC2G126YZAR 

The Texas Instruments SN74LVC2G126YZAR is a dual-bus buffer gate with 3-state output. This dual bus buffer gate is designed for 1.65 V to 5.5 V VCC operation. NanoStar™ and NanoFree™ packaging technologies are a major breakthrough in IC packaging concepts, and NanoFree™ packaging technology is used in this chip package.

Key Applications: Partial shutdown applications using IOFF

LE25U40CMC-AH 

The ON Semiconductor LE25U40CMC-AH is an SPI bus flash device with a 4MB (512K x 8-bit) configuration that adds a high performance dual output and dual I/O functionality. The LE25U40CMC-AH is available in an 8-pin ultra-miniature package, even though it provides most of the functionality inside a serial flash device. All of these features make this device suitable for storing programs in applications such as portable information devices, where increasingly compact size is required, and the LE25U40CMC-AH has a small sector erase capability, making it suitable for storing parameters or information that have fewer rewrites and cannot be handled by traditional EEPROMs due to insufficient capacity.

Main applications: storage, portable devices

LD57100J105R 

STM LD57100J105R is a high precision regulator that delivers 1 A of current. It is equipped with an NMOS transfer transistor whose gate is biased by a dedicated pin, thus enabling ultra-low dropout performance even at very low input voltages. It uses a Flip Chip6 (0.8x1.2 mm) for maximum space savings. The device is stabilized by a small ceramic capacitor at the output. The ultra-low dropout voltage, low quiescent current, and short-circuit protection make the LD57100J105R suitable for low-power battery-powered applications. The enable logic control function puts the LD57100J105R in shutdown mode, allowing total current consumption to be less than 0.1 μA.

Key applications: smartphones, cameras, low-voltage, low-noise post-regulator

What other chips do you usually use

but are not on the list?please tell me!