Elf 2000 Main Board Parts List
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Revision as of 01:22, 18 November 2011 by Bill Donnelly (Talk | contribs)
| Ref/Desig | Manuf. | P/N | Vendor | Stock # | Description |
|---|---|---|---|---|---|
| RESISTORS | |||||
| R1, R5, R6, R7, R8 | common | 330 ohm 1/8W 5% carbon resistor | |||
| R2 | common | 1K ohm 1/8W 5% carbon resistor | |||
| R3 | common | 200 ohm 1/8W 5% carbon resistor | |||
| R4 | common | 3.3K ohm 1/8W 5% carbon resistor | |||
| RP1, RP3 | JameCo | 24643 | 10K x 9 10 pin SIP | ||
| RP2 | JameCo | 856909 | 10K x 7 8 pin SIP | ||
| RP4 | JameCo | 771681 | 10K x 5 6 pin SIP | ||
| CAPACITORS | |||||
| C1 | JameCo | 30017 | 1000uF 16V radial lead aluminum electrolytic capacitor | ||
| C2 | JameCo | 33689 | 10uF 6V tantalum capacitor | ||
| C3 | - | - | - | - | unused |
| C4-C24 | JameCo | 332672 | 0.1uF ceramic monolithic bypass capacitor (0.1" LS) | ||
| SEMICONDUCTORS | |||||
| D2, D3, D4, D6 | 1N914 | JameCo | 36311 | Small signal switching diode | |
| D5 | 1N4001 | JameCo | 35975 | 50PIV 1A power diode | |
| D1 | unused | ||||
| VR1 | 7805 | JameCo | 51262 | 5.0V fixed output TO-220 regulator | |
| U1 | Intersil | CDP1802ACD3 | 8 bit microprocessor | ||
| U2 | RCA | CDP1861D | video co-processor (hard-to-find item – see STG1861 Parts List) | ||
| U3 | STG | 27C256 | STG | 32K 8 bit EPROM | |
| U4 | Hitachi | HM62256LP | JDR | HM62256LP-70 | 32K 8 bit low power SRAM 150ns |
| U5 | Dallas | DS1210 | JameCo | 114198 | Nonvolatile SRAM controller |
| U6 | 74HC373 | JDR | 74HC373 | Octal D Latches | |
| U7 | Atmel | ATF22V10CQZ | STG | Flash GAL (quarter power) | |
| U8 | 74HC04 | JDR | 74HC04 | Hex inverter | |
| U9 | CD4044 | JameCo | 13004 | Quad S-R Latches | |
| U10 | 74HC74 | JDR | 74HC74 | Dual D Flip Flop | |
| U11 | - | - | - | - | unused |
| U12, U13, U14 | 74HC244 | JDR | 74HC244 | Dual Quad Buffer | |
| U15 | Dallas | DS123324 | Digi-Key | DS1233-10+-ND | 5V 10% TO-92 EconoReset |
| U16 | Dallas | DS275 | ? | RS-232 transceiver (2011 — hard-to-find part – see/search: [1] or [2]) | |
| DISP1-6 | TIL311 | ? | LED Hexadecimal Display (2011 — hard-to-find part – see/search: [3]) | ||
| LED1-5 | JDR | LED101 | Red T1 LEDs | ||
| OSC1 | ECS | 2100A-035 | Mouser | 520-TCH357-X | 3.579545Mhz DIP8 crystal oscillator |
| MISCELLANEOUS | |||||
| B1 | CR1225 | Mouser | 614-CR1225 | Lithium coin cell | |
| BH1225 | Digi-Key | 500K-ND | CR1225 coin cell holder | ||
| PB1 | Panasonic | EVQ-PAD05R | Digi-Key | P10890S-ND | PCB mount push button switch |
| S1 | C&K | T101MH9ABE | Digi-key | CKN1067-ND | SPDT Tiny Toggle Switch, PCB Mount Right Angle |
| J1 | PJRAN1X1U04X | Mouser | 502-PJRAN1X1U04X | PCB mount phono jack (Video) | |
| J2 | Cui-Stack | PJ-102AH | Digi-Key | CP-102AH-ND | high current coaxial power jack (2.1 x 5.5mm) |
| J3 | CommConn | 1184-24G2 | ? | 24 pin dual row stacking header | |
| J4 | ? | PCB mount DB9F | |||
| J5 | JameCo | 53480 | 20 pin 0.1" dual row header | ||
| JDR | MPSOC-08 | DIP8 machined pin IC socket | |||
| ? | DIP8 machined pin oscillator socket | ||||
| JDR | MPSOC-14 | DIP14 machined pin IC socket | |||
| JDR | MPSOC-16 | DIP16 machined pin IC socket | |||
| JDR | MPSOC-20 | DIP20 machined pin IC socket (0.300") | |||
| JameCo | 39386 | DIP24 machined pin IC socket (0.300") | |||
| JameCo | 39351 | DIP24 machined pin IC socket (0.600") | |||
| JDR | MPSOC-28 | DIP28 machined pin IC socket (0.600") | |||
| JDR | MPSOC-40 | DIP40 machined pin IC socket | |||
| ? | #4-40 mounting hardware for VR1 | ||||
| JDR | HS507302B | Heat sink for VR1 | |||
| STG | ELF2K-1C | STG | Printed circuit board | ||
NOTE: The following items are hard-to-find parts as of 2011.
Check the sources given.
• U16 – Dallas – DS275 – RS-232 transceiver – www.futurlec.com or www.componentsdirect.com
• DISP1-6 – TIL311 – LED Hexadecimal Display – www.utsource.net
(also note that the hexadecimal displays are optional – you may use none, or only two for data)
