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54LS190/BEA
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Rochester Electronics LLC
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54LS190 - BCD Counter, 4-Bit Synchronous Up/Down, With Mode Control - Dual marked (M38510/31513BEA) | 
PDF
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DM54LS168J/B
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Rochester Electronics LLC
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54LS168 - Decade UP/Down Counter | 
PDF
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54L193W/C
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Rochester Electronics LLC
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54L193 - 4 Bit Binary Up/Down Counter | 
PDF
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54LS293/BCA
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Rochester Electronics LLC
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54LS293 - Binary Counter, 4-Bit - Dual marked (M38510/32004BCA) | 
PDF
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54F163/B2A
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Rochester Electronics LLC
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54F163 - Binary Counter, 4-Bit Synchronous - Dual marked (M38510/34302B2A) | 
PDF
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