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- CH340E – TSSOP-10 (Notice pitch is 0.5mm), only need two external parts for USB to UART communication, no need crystal, ultra small size, tested stable speed (150000 for flashing esp8266)
- (Retired) CH340G – SOP-16, price-competitive USB-TTL ICs, same high speed.
- Each purchase is for 5pcs.
- CH340C – SOP-16, fully replace CH340G, but no more need external 12Mhz crystal, for your current design, it is pin to pin replaceable, for your future design, no need crystal anymore.