Radio Shack TRS-80 Service Manual page 28

Ref. No.
U8 SN74LS174N or (D-TYPE F.F)
MB74LS174M or
HD74LS174P
µPD4016C-1 or (STATIC RAM)
U9/10
µPD4016D-1 or
MB8128-15P or
MSM2128-20RS
U11 MC6847P (VDG)
U12 SN74LS14N or (INVERTER)
MB74LS14M or
HD74LS14P
U13 SN74LS32N or (OR-GATE)
MB74LS32M or
HD74LS32P
U14 MC14503BCP or (BUFFER)
HD14503BP or
µPD4503BC or
MSM4503RS
U15 LM339N or (COMPARATOR)
µPC339C
U16 MC1741CP1 or (OP AMP)
HA17741PS
U17 MC7805CT or (VOLTAGE REGULATOR)
NJM7805A or
µPC7805H
U18 SN74LS74AN or (D-F.F)
MB74LS74AM or
HD74LS74AP
U19 SN74LS76AN or (JK-F.F)
MB74LS76AM or
HD74LS76P
U20 SN74LS32N or (OR-GATE)
MB74LS32M or
HD74LS32P
Description R/S Part No. R/S Part No.
– 28 –
Mfr's Part No.
MOTOROLA
FUJITSU
HITACHI
NEC
NEC
FUJITSU
OKI
MOTOROLA
MOTOROLA
FUJITSU
HITACHI
MOTOROLA
FUJITSU
HITACHI
MOTOROLA
HITACHI
NEC
OKI
MOTOROLA
NEC
MOTOROLA
HITACHI
MOTOROLA
JRC
NEC
MOTOROLA
FUJITSU
HITACHI
MOTOROLA
FUJITSU
HITACHI
MOTOROLA
FUJITSU
HITACHI