Texas Half-H datasheet, Sep. 1986 [Revised Instruments, “Quadruple Drivers,” L293(D) Nov. 2004]. Clock CTS, “HCMOS/TTL Oscillator,” CB3(LV) datasheet.
Texas Instruments, “Quadruple Half-H Drivers,” L293(D) datasheet, Sep. 1986 [Revised Nov. 2004]. CTS, “HCMOS/TTL Clock Oscillator,” CB3(LV) datasheet.