8T28 Quad Bus Transceiver
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations H10 and H11.
N8T28B, 7726 date code.
Total # on board: 2.
Motorola
Parts for my Rev 0 replica.
MC6889P/MC8T28P, 7743 date code. Used, desolded.
8T97 Tri-State Hex Buffer
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations H3, H4, and H5.
MC6887P/MC8T97P, 7737 and 7738 date codes.
Total # on board: 3.
Motorola
Parts for my Rev 0 replica.
MC6887P/MC8T97P, 7739 date code. Used/desoldered.
R03-2513 Character ROM
General Instruments
From a photo of Rev. 0 board 1070 (A2S1-0800), near location A5.
R03-2513/CGR-001, 7736 date code.
Total # on board: 1.
General Instruments
Part for my Rev 0 replica.
R03-2513/CGR-001, 7634 date code, ceramic. NOS. Not sure if a ceramic like this was used on an early Apple ][.
25LS138 3-to-8 Line Decoder/Demultiplexer
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location F13.
AM25LS138PC, 7733O date code.
Total # on board: 1.
AMD
Parts for my Rev 0 replica.
SNLS138N, 7733DQ date codes. NOS.
25LS251 Tri-State 8-Input Multiplexer
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location H14.
AM25LS251PC, 7729P date code.
Total # on board: 1.
Motorola
Parts for my Rev 0 replica.
SN74LS251NDS, 7808 date code. NOS.
74LS00 Quad 2-Input NAND Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location A2.
SN74LS00N, 7733 date code. Squared-off package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
SN74LS00N, 7733 date code. Squared-off package.
74LS02 Quad 2-Input NOR Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B13.
SN74LS02N, 7735 date code. Squared-off package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
SN74LS02N, 7716 date code. Rounded package. NOS.
74LS04 Hex Inverters
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location C11.
SN74LS04N, 7731 date code.
Total # on board: 1.
Texas Instruments
Parts for my Rev 0 replica.
SN74LS04N, 7718 date code. NOS.
74LS08 Quad 2-Input AND Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B11.
SN74LS08N, 7723 date code. Squared-off package. There is another near location H1.
Total # on board: 2.
Motorola
Parts for my Rev 0 replica.
SN74LS08N, 7738 date code. Rounded package. NOS.
74LS11 Triple 3-Input AND Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B12.
SN74LS11N, 7713 date code. Rounded package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
SN74LS11N, 7713 date code rounded package. NOS.
74LS20 Dual 4-Input NAND Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location D2.
SN74LS20N, 7712 date code. Rounded package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
SN74LS20N, 7712 date code. Rounded package. NOS.
74LS32 Quad 2-Input OR Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location C14.
SN74LS32N, 7716 date code.
Total # on board: 1.
Signetics
Part for my Rev 0 replica.
74LS32N, 7708 date code. NOS.
74LS51 Dual AND-OR-INVERT Gate
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location C13.
SN74LS51N, 7725 date code. Squared-off package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
SN74LS51N, 7725 date code. Squared-off package. NOS.
74LS74 Dual D-Type Flip-Flop
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B10. There is another near location J13.
SN74LS74N, 7720 date code. Squared-off package.
Total # on board: 2.
Motorola
Parts for my Rev 0 replica.
SN74LS74N, 77xx date codes. Rounded package.
74LS138 3-To-8 Decoder
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations F12 and H12. There is another near location H2.
SN74LS138N, 7711 date code. Rounded package.
Total # on board: 3.
Motorola
Parts for my Rev 0 replica.
SN74LS138N, 7716 date code, rounded package. NOS.
74LS139 Dual 2-To-4 Decoder
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location F2.
SN74LS139N, 7733P date code. Squared-off notch.
Total # on board: 1.
AMD
Part for my Rev 0 replica.
SN74LS139N, 7805DK date code. Rounded notch. NOS.
74LS151 8-Input Multiplexer
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location A9.
SN74LS151N, 7739DP date code. Squared-off notch.
Total # on board: 1.
AMD
Part for my Rev 0 replica.
SN74LS151N, 7728ML date code. Rounded notch. NOS.
74LS153 Dual 4-To-1 Multiplexer
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations E11, 12 and 13. There is also one near location C1.
SN74LS153N, 7723 date code. Rounded package.
Total # on board: 4.
Motorola
Parts for my Rev 0 replica.
SN74LS153N, 7716 date code. Rounded package. Used, desoldered.
74LS161 Synchronous 4-Bit Binary Counter
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations D11, 12, 13 and 14.
SN74LS161N, 7738K date code. Rounded notch.
Total # on board: 4.
AMD
Parts for my Rev 0 replica.
SN74LS161N, 7706Q date code. Squared-off notch. NOS.
74LS174 Hex D-Type Flip-Flop
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations B5 and B8.
SN74LS174N, 7738K date code. Rounded notch.
Total # on board: 2.
AMD and TI
Parts for my Rev 0 replica.
SN74LS174N, 7802DKP and AZ7637 date codes. Rounded notch on AMD IC. NOS.
74LS194 4-Bit Bidirectional Universal Shift Register
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations B9 and A10. There is another near location B4.
SN74LS194AN, 7734K date code. Rounded notch.
Total # on board: 3.
AMD
Parts for my Rev 0 replica.
SN74LS194AN, SN54LS194AJ, 77xx date codes. 3 different NOS package variations.
74LS257 Quad 2-Input Multiplexer
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations A8, B6 and B7. There are others near locations C12 and J1.
SN74LS257N, 7737M date code. Squared-off notch.
Total # on board: 5.
AMD
Parts for my Rev 0 replica.
SN74LS257N, 7652P date code. Squared-off notch. NOS.
74LS283 4-Bit Binary Adder
Signetics
From a photo of Rev. 0 board 1070 (A2S1-0800), near location E14.
74LS283N, 7738 date code.
Total # on board: 1.
Signetics
Part for my Rev 0 replica.
74LS283N, 7705 date code.
NOS.
74S86 Quad 2-Input Exclusive-OR Gate
Signetics
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B2.
74S86N, 7738 date code.
Total # on board: 1.
Signetics
Parts for my Rev 0 replica.
74S86N, 7847 date code.
NOS.
74S175 Quad D-Type Flip-Flop
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B1.
SN74S175N, 7739 LP date code. Rounded notch, dot below logo.
Total # on board: 1.
AMD
Part for my Rev 0 replica.
SN74S175N, 7739 LP date code. Rounded notch, dot below logo. NOS.
74S195 4-Bit Shift Register
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location C2.
SN74S195N, 7725K date code. Rounded notch.
Total # on board: 1.
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location C2.
SN74S195N, 7725K date code. Rounded notch.
Total # on board: 1.
LM741 Operational Amplifier
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location K13.
LM741CN, 7624 date code. Rounded package.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
1741CP1, 7619 date code. Rounded package.
NOS.
9334 8-Bit Addressable Latch
AMD
From a photo of Rev. 0 board 1070 (A2S1-0800), near location F14.
9334PC, 7737DP date code. Squared-off notch.
Total # on board: 1.
AMD
Part for my Rev 0 replica.
9334PC, 7733P date code. Squared-off notch.
NOS.
74166 8-Bit Shift Register
Signetics
From a photo of Rev. 0 board 1070 (A2S1-0800), near location A3.
N74166B, 7628 date code.
Total # on board: 1.
Signetics
Part for my Rev 0 replica.
N74166B, 7612 date code.
NOS.
555 Timer
Motorola
From a photo of Rev. 0 board 1070 (A2S1-0800), near location B3.
NE555V, 7643 date code. Rounded case.
Total # on board: 1.
Motorola
Part for my Rev 0 replica.
NE555V, 7708 date code. Squared-off case.
NOS.
558 Quad Timer
Signetics
From a photo of Rev. 0 board 1070 (A2S1-0800), near location H13.
NE558N, 7719 date code.
Total # on board: 1.
Signetics
Part for my Rev 0 replica.
NE558N, 7716 date code.
NOS.
Integer BASIC ROMs
Synertek
From a photo of Rev. 0 board 1070 (A2S1-0800), near locations F3 through F8.
C280xxM, 773x date codes.
Total # on board: 4.
Synertek
Parts for my Rev 0 replica.
These are original ROMs from a collection attributed to Robert Sander-Cederlof, from his first Apple ][ system. These have date codes consistent with systems that have a serial number in the lower hundreds.
Dynamic RAM
NEC
From a photo of Rev. 0 board 1070 (A2S1-0800), in rows C and D.
µPD416D, 736 date code. 16kb x 1.
Total # on board: 16.
Texas Instruments
From another photo of Rev. 0 board 1070 (A2S1-0800), in row E.
TMS4116-15JL, P7845 date code. 16kb x 1.
Total # on board: 8.
Motorola
Parts for my Rev 0 replica.
MCM4027L4, 7710 and 7721 date codes. 4kb x 1. Have enough to populate all 3 rows to use with the 4K memory select blocks.
6502 CPU
Synertek
From a photo of Rev. 0 board 1070 (A2S1-0800), near location H7,8.
7732 date code, black plastic.
Total # on board: 1.
Synertek
Part for my Rev 0 replica. Attributed to Robert Sander-Cederlof’s 1st Apple ][. 7720 date code, black plastic.