logic-analyzer
TSJR
TTL logic analyzer built from 74xx logic and LED dot matrix display
Components (20)
| Reference | Value | Description |
|---|---|---|
| U3,U6,U9,U12 | 74LS245 | Octal BUS Transceivers, 3-State outputs |
| U13,U14 | 74LS85 | 4-bit Comparator |
| U15 | 74LS21 | Dual 4-input AND |
| U16,U23 | 74LS32 | Quad 2-input OR |
| U17 | 74LS139 | Dual Decoder 1 of 4, Active low outputs |
| U18,U19 | 74LS161 | Synchronous 4-bit programmable binary Counter |
| U20,U21 | 74LS157 | Quad 2 to 1 line Multiplexer |
| U22 | 74LS279 | Quad SR latch, DIP-16/SOIC-16/SOIC-16W |
| U24 | 74LS14 | Hex inverter schmitt trigger |
| C1-C24 | C | Unpolarized capacitor |
| J1 | CLK | Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | Addr In | Generic connector, single row, 01x06, script generated |
| J3 | Data In | Generic connector, single row, 01x08, script generated |
| J5 | Power | Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J6 | Data Out | Generic connector, single row, 01x08, script generated |
| R1-R20 | R | Resistor |
| SW1 | RUN | Push button switch, generic, two pins |
| SW2 | HLT | Push button switch, generic, two pins |
| SW3 | HLT Word | 8x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |
| SW4 | W_EN | 1x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |