54S157FM逻辑芯片《MULTIPLEXER 2 LINE INPUT, TTL》

SNJ54S157FK逻辑芯片《54S157 QUADRUPLE 2-LINE TO 1-LIN》

SN54S157J逻辑芯片《54S157 QUADRUPLE 2-LINE TO 1-LIN》

JM38510/07903BFA逻辑芯片《SN54S157 QUADRUPLE 2-LINE TO 1-L》