14
U3
Image Qty Reference Description
1
U3 74HCT08, quad2-input AND gate
Supplier Partnumber
Farnell 9591796
Mouser 595-CD74HCT688E
RS 527-514
Thisintegrated circuitprovides a specialreset signal tothe PIO. Thereis no separate
reset pin on thePIO, so insteadthe M1pin has anextrafunction. WhenM1 islow
and both RD and IORQ arehigh,the PIOenters areset state.
U3 socket
Image Qty Reference Description
1
U3 socket 14pin PDIPIC socket0.3"
Supplier Partnumber
Farnell 2445621
Mouser 571-1-2199298-3
RS 674-2438
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