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Datasheet Replacement Marking Code
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25LC128
SN74LS6 (123)SN74LS (904)SN74L (1223)SN74 (4991)SN7 (9)
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SN74LS645-1NE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-PDIP
Hotenda

SN74LS645NE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-PDIP
Hotenda

SN74LS640-1DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
Hotenda

SN74LS640DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
Hotenda

SN74LS640DBR

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SSOP
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SN74LS645-1DWG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
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SN74LS641NE4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-PDIP
Hotenda

SN74LS641-1DWE4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
Hotenda

SN74LS641DW

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
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SN74LS641-1DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
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SN74LS641DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
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SN74LS623NE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-PDIP
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SN74LS642DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
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SN74LS642NE4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-PDIP
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SN74LS646NT

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-PDIP
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SN74LS652NT

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-PDIP
Hotenda

SN74LS648NT

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 24-PDIP
Hotenda

SN74LS641DWR

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
Hotenda

SN74LS623DW

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
Hotenda

SN74LS623DWE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
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SN74LS623DWR

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
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SN74LS623DWRE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
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SN74LS623NSR

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SO
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SN74LS623NSRE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SO
Hotenda

SN74LS641DWRE4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
Hotenda

SN74LS646DWR

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS646DWRE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS648DW

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS648DWE4

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS652DWR

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS652DWRE4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS623DWG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
Hotenda

SN74LS623DWRG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SOIC
Hotenda

SN74LS623NSRG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-SO
Hotenda

SN74LS641DWRG4

Transceiver, Inverting 1 Element 8 Bit per Element Open Collector Output 20-SOIC
Hotenda

SN74LS646DWRG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS648DWG4

Transceiver, Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS652DWRG4

Transceiver, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 24-SOIC
Hotenda

SN74LS688N

Magnitude Comparator 8 Bit Active Low Output A=B 20-PDIP
Hotenda

SN74LS684N

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-PDIP
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SN74LS682NSR

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-SO
Hotenda

SN74LS684NSR

IC COMPARATOR MAGNITUDE 20SO
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SN74LS682N

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-PDIP
Hotenda

SN74LS688DW

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOIC
Hotenda

SN74LS682DW

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-SOIC
Hotenda

SN74LS682DWR

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-SOIC
Hotenda

SN74LS682DWRG4

Magnitude Comparator 8 Bit Active Low Output A=B, A>B 20-SOIC
Hotenda

SN74LS688DWR

Magnitude Comparator 8 Bit Active Low Output A=B 20-SOIC
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SN74LS688NSR

Magnitude Comparator 8 Bit Active Low Output A=B 20-SO
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SN74LS688NE4

Magnitude Comparator 8 Bit Active Low Output A=B 20-PDIP
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