SF68
scefrom
A board featuring the Motorola 68000
Components (33)
| Reference | Value | Description |
|---|---|---|
| Q1 | Q_NPN_CBE | |
| Q2 | Q_PNP_CBE | |
| U1,U5 | 74HC04 | Hex Inverter |
| U2,U30 | 74HC08,LM6172 | Quad And2 |
| U3,U7,U9,U10 | 74HC21 | Dual 4-input AND |
| U4,U8 | 74HC73 | Dual JK Flip-Flop, reset |
| U6,U28 | 74HC32 | Quad 2-input OR |
| U11-U16 | 74HC163 | Synchronous 4-bit programmable binary Counter |
| U21-U23,U25,U26,U54-U57 | 74HC541 | 8-bit Buffer/Line Driver 3-state outputs |
| U24 | 28C16 | |
| U27-U29 | 74HC541,LM6171xxN | 8-bit Buffer/Line Driver 3-state outputs |
| U27 | 74HC165 | Shift Register, 8-bit, Parallel Load |
| U32,U33,U35,U36 | AS6C4008-55PCN | 512K x 8 Low Power CMOS RAM, DIP-32 |
| U34,U37 | 74HC157 | Quad 2 to 1 line Multiplexer |
| U38,U40,U42,U44 | 74AHC574 | 8-bit Register, 3-state outputs |
| U39,U41,U43,U45 | 74HC245 | Octal BUS Transceivers, 3-State outputs |
| U46 | 74HC574 | 8-bit Register, 3-state outputs |
| U47,U48 | 74HC688 | 8-bit magnitude comparator |
| U49-U52 | 74AHC541 | 8-bit Buffer/Line Driver 3-state outputs |
| C4,C7 | 100u | |
| J2 | perslota | |
| J4 | vgasupply | |
| J5 | perslotb | |
| J6 | DE15_Socket_HighDensity | |
| R1-R4,R6,R10-R12,R17-R20 | 5.4k | |
| R5,RN1,RN2 | 10k | 8 resistor network, star topology, bussed resistors, small symbol |
| R7,R8,R13-R15 | 2.7k | |
| R21-R23 | 800 | |
| R24,R30,R34,R35 | 1k | |
| R25,R26 | 50 | |
| R27-R29 | 620 | |
| R31-R33 | 33 | |
| Y1 | CXO_DIP8_25.175MHz | Crystal Clock Oscillator, DIP8-style metal package |