MC74HC390AFR1【DUAL 4-STAGE BINARY RIPPLE COUNT】

贴片直插MC74HC390AFR2 MC74HC390AFL2 MC74HC390AFR1 4

贴片直插MC74HC390DTR2，MC74HC390AFL1，MC74HC390AFR2，4

贴片直插MC74HC390AFR2G MC74HC390ADR2G MC74HC390AFL1G 4

贴片直插MC74HC390ADTG，MC74HC374AFR1，MC74HC390ADR2，4