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型号	厂家	描述	大小	页数	厂家标志
54F132DM	National Semiconductor	Quad 2-Input NAND Schmitt Trigger	109 KB	8
54F138DC	National Semiconductor	Quad 2-Input NAND Schmitt Trigger	109 KB	8
54F157AYB	National Semiconductor	Quad 2-Input NAND Schmitt Trigger	109 KB	8
54F174DC	National Semiconductor	Quad 2-Input NAND Schmitt Trigger	109 KB	8
54F240BRAJC	National Semiconductor	Quad 2-Input NAND Schmitt Trigger	109 KB	8
54F243LMQB	National Semiconductor	Quad Bus Transceiver with TRI-STATE Outputs	133 KB	6
54F244LMQB/C	National Semiconductor	Quad Bus Transceiver with TRI-STATE Outputs	133 KB	6
54F245DC	National Semiconductor	BUS TRANSCEIVER|SINGLE|8-BIT|F-TTL|DIP|20PIN|CERAMIC	17 KB	0
54F258AFMQB	National Semiconductor	BUS TRANSCEIVER|SINGLE|8-BIT|F-TTL|DIP|20PIN|CERAMIC	17 KB	0
54F299DC	National Semiconductor	BUS TRANSCEIVER|SINGLE|8-BIT|F-TTL|DIP|20PIN|CERAMIC	17 KB	0
54F399DM	National Semiconductor	Quad 2-Port Register	178 KB	10
54F353LMQB	National Semiconductor	Quad 2-Port Register	178 KB	10
54F521DC	National Semiconductor	Quad 2-Port Register	178 KB	10
54F652SDMQB	National Semiconductor	Single 8-bit Bus Transceiver	179 KB	0
54F74DC	National Semiconductor	FLIP-FLOP|DUAL|D TYPE|F-TTL|DIP|14PIN|CERAMIC	16 KB	0
54FCT139ATEB	National Semiconductor	FLIP-FLOP|DUAL|D TYPE|F-TTL|DIP|14PIN|CERAMIC	16 KB	0

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