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序号 型号 描述 大小 厂家Logo 下载
1 SN54LS49 BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS 597K TI 4189713
2 SN54LS490 DUAL DECADE COUNTER 165K MOTOROLA 4189712
3 SN54LS490 DUAL 4-BIT DECADE COUNTERS 144K TI 2139088
4 SN54LS490 DUAL 4-BIT DECADE COUNTERS 594K 暂无图片 485252
5 SN54LS490J DUAL DECADE COUNTER 165K MOTOROLA 4189711
6 SN54LS491A 10-Bit Counter SN54/74LS491A 247K ETC 5219633
7 SN54LS491A 10-Bit Counter SN54/74LS491A 251K ETC1 1310851
8 SN54LS49FK BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS 597K TI 4189710
9 SN54LS49J BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS 597K TI 4189709
10 SN54LS49W BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS 597K TI 4189708