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ACA-5320-A1S DN6838 M74HCT74RM13TR SN54HC399J SUB75P03-07-E3
贴插54HC399-54S193J-SN5496J-54F126J-54LS58J-54F174J
贴片直插SN54LS399J SN54HC138J SMT100-230 SN4188JIR1 5
贴插SN5408J-AD977BN-54LS398-54LS399-54HC50J-SP487ES
贴插SN54S471J-54HC279AJ-54HC399AJ-54HC398AJ
