Communication interface chip UART485/232

High-Performance Silicon-Gate CMOS MC74HC4051A, MC74HC4052A, and MC74HC4053A use silicon-gate CMOS technology to achieve fast propagation delay, low on-resistance, and low off-leakage current. These analog multiplexers/demultiplexers control analog voltages that vary across the entire supply range from VCC to VEE. The HC4051A, HC4052A, and HC4053A have similar pinouts to the metal gate MC14051AB, MC14052AB, and MC14053AB. The channel select input determines which analog input/output is connected to the common output/input via an analog switch. When the enable pin is high, all analog switches are off. Channel select and enable inputs are compatible with standard CMOS outputs; with pull-up resistors, they are compatible with LSTTL outputs. These devices are designed so that the on-resistance (Ron) with respect to input voltage is more linear than the Ron of metal-gate CMOS analog switches. For multiplexer/demultiplexer with injection current protection, see HC4851A and HC4852A.

RS232 transceiver

RS-485/RS-422 Chip Transceiver Driver/Receiver: 1/1 Data Rate: 10Mbps Power Supply Voltage: 3V~3.6V

CMOS Integrated Dual-Tone Multi-Frequency Receiver

TS3A227E TS3A227E Automotive Audio Accessory Detection and Configuration Switch

The FSUSB30 is a low power, two port, high speed USB2.0 switch. It is configured as a double pole double throw (DPDT) switch and is suitable for switching between two high speed (480Mbps) sources or high speed and full speed (12Mbps) sources. The FSUSB30 is USB2.0 compliant with a very low on-capacitance (CON) of 3.7pF. The device's wide bandwidth (720MHz) exceeds that required to pass the third harmonic, resulting in exceptionally low signal edge and phase distortion. Excellent channel-to-channel crosstalk performance also minimizes interference. The FSUSB30 includes special circuitry on the D+/D- pins to allow the device to withstand overvoltage conditions when the power is turned off. The device is designed to minimize current consumption even when the control voltage applied to the S pin is lower than the supply voltage (VCC). This feature is especially useful in ultra-portable applications such as cell phones; it provides a direct interface to the general-purpose I/O of the baseband processor. Other applications include switching and interface sharing in mobile cellular phones, PDAs, digital cameras, printers and notebook computers.

CMOS switch