Product Summary

The CH341A is a USB bus convert chip. The CH341A is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with 2-wire or 4-wire through USB bus. In UART mode. The CH341A provides alternant rate control signals such as serial transfer enable, serial receive in ready etc. It also supplies common MODEM communication signal in order to expand UART for computer or upgrade common synchronous interface device to USB bus directly.

Parametrics

CH341A absolute maximum ratings: (1)TA Ambient operating VCC=5V: -40 to 85 ℃; (2)temperature VCC=V3=3.3V: -40 to 85 ℃; (3)TS Storage temperature: -55 to 125 ℃; (4)VCC Voltage source (VCC connects to power, GND to ground): -0.5 to 6.5 V; (5)VIO The voltage of input or output pin: -0.5 to VCC +0.5 V.

Features

CH341A features: (1)Full speed USB device interface, conforms to USB Specification Version 2.0, only needs crystal and capacitance external; (2)Optional: define Vender ID, production ID and list number through external low-cost serial EEPROM; (3)Supports 5V and 3.3V power source; (4)Low-cost, directly convert serial peripheral equipment, parallel printer and parallel peripheral equipment; (5)SOP-28 and SSOP-20 package lead free, compatible with RoHS; (6)Only compatible with application layer because interfaces are diverted via USB.

Diagrams

CH341A diagram

CH341
CH341
Other

Data Sheet
Negotiable