DIGITAL DISPLAY PARTS LIST
This parts list does NOT include ANY items required for the serial RS232 interface... if
you intend to build the serial interface, the EXTRA parts ( required for the RS232
capability ) is included in the SCHEMATIC DIAGRAM for that interface.
Qty Ident Description Newark p/n Digi-Key p/n Jameco p/n
PC boards
1 N/A Counter Board Bob / Fabricate
1 N/A Numeric Display Board Bob / Fabricate
Chips
1 U17 74LS10 08F6652 DM74LS10N-ND 46404
3 U24,U25 74LS47 08F7419 SEE NOTE 1 47790
U26
1 U16 74LS74 N/A DM74LS74AN-ND 48004
3 U21,U22 74LS75 08F7584 DM74LS75N-ND 48021
U23
3 U18,U19 74LS90 08F7653 DM74LS90N-ND 48119
U20
2 U14,U15 74LS93 08F7669 N/A 48151
1 U27 LM340T-5 06F9403 LM340T-5.0-ND 51262
1 U29 74LS123 08F6715 DM74LS123N-ND 46480
Semiconductors ( SEE NOTE 2 )
2 D33,D34 1N914 09F4830 1N4148DICT-ND 36311
3 DS1,DS2 FND507 06F5694 P330-ND 17208
DS3
Resistors
3 R55,R60 10K 1/4W 91F4527 10KQBK-ND 29911
R61
1 R62 47K 1/4W 91F4543 47KQBK-ND 31149
3 RP1,RP2 8X470 1/4W 02F2064 4116R-1-471-ND 108581
RP3
Capacitors
2 C37,C38 0.1 uF 65F651 P4593-ND 25523
2 C39,C41 1000 pF 89F3219 P4551-ND 15190
2 C35,C36 22uF/35V AXIAL 16F2275 ??? 10997
1 C42 22uF/25V RADIAL 91F6300 P5149-ND 158326
NOTE 1 : "LS" VERSION NOT AVAILABLE FROM DIGI-KEY, P/N FOR STANDARD TTL
VERSION IS DM7447AN-ND. ( SHOULD WORK OK )
NOTE 2 : READOUT LED P/N'S ARE FOR RED DIGITS. OTHER COLORS AVAILABLE :
GREEN : (DIGI-KEY) P331-ND (NEWARK) 06F5717
YELLOW : (DIGI-KEY) P332-ND (NEWARK) 06F5724
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