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Replaceable Electrical Parts
8–144
1780R-Series Service Manual
Replaceable electrical parts list (cont.)
Component
number
Mfr. part numberMfr. codeName & description
Serial no.
discont’d
Serial no.
effective
Tektronix
part number
A10U420 156–1917–00 IC,DIGITAL:LSTTL,REGISTER,8–BIT SHIFT,OUTPUT
LATCH,74LS595,DIP16.3,TUBE
01295 SN74LS595N
A10U437 156–1535–00 IC,PROCESSOR:NMOS,PERIPHERAL,PROGRAMMABL
E KEYBOARD INTERFACE,8279–5,DIP40.6
34335 AM8279–5(N OR J)
A10U441 156–2980–00 IC,DIGITAL:HCMOS,QUADRATURE
DECODER/COUNTER INTERFACE,8–BIT TRI
STAR,12–BIT UP/DOWN,12–BIT
50444 HCTL–2000
A10U508 160–6004–00 IC,DIGITAL:CMOS,PLD,EEPLD,16V8,25NS,90MA,PRGM
156–2983–00,16V8–25,DIP20.3
TK0198 160600400
A10U512 156–1172–00 IC,DIGITAL:LSTTL,COUNTER,DUAL 4–BIT
BINARY,74LS393,DIP14.3,TUBE
01295 SN74LS393N
A10U520 156–0721–00 IC,DIGITAL:LSTTL,SCHMITT TRIG,QUAD 2–INPUT
NAND,74LS132,DIP14.3,TUBE
07263 DM74LS132N
A10U530 156–0402–00 IC,MISC:BIPOLAR,TIMER,LM555CN,DIP08.3 27014 LM555CN
A10U541 156–3192–00 IC,DIGITAL:HCMOS,FLIP FLOP,HEX
D–TYPE,CLEAR,74HCT174,DIP16.3,TUBE
04713 MC74HCT174N