请问一下，SN74LVC1G3157在规格书后面Layout Guidelines上有建议要"These traces must be designed with a characteristic impedance of either 50 Ω or 75 Ω, as required by the application." 那我产品是应用在UART上，是否需要？
请问一下，SN74LVC1G3157在规格书后面Layout Guidelines上有建议要"These traces must be designed with a characteristic impedance of either 50 Ω or 75 Ω, as required by the application." 那我产品是应用在UART上，是否需要？
