DDI Telengard CPR3 Cart (2014)
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1 $xx.xx 27C64 8KB EPROM
2 $xx.xx 27C256 32KB EPROM

Mouser Parts:
1 $0.57 Texas Instruments Quad Flip Flop # 595-CD74HCT175E
1 $0.46 Texas Instruments Quad NAND Gate # 595-SN74HCT00N

Optional:
1 $0.50 Kao Speer 680 Ohm 1206 SMT Resistor # 660-SG732BTTD681K
1 $0.57 Vishay 405nm UV 3.2v PLCC-2 SMT LED # 78-VLMU3100-GS08

Optional:
1 $1.16 Harwin 14 Pin Machine Socket # 855-D2814-42
1 $1.36 Harwin 16 Pin Machine Socket # 855-D2816-42
3 $2.19.Harwin 28 Pin Machine Socket # 855-D2828-42

* The cathode of the PLCC-2 LED must face the right PCB edge.