Check the listing for details. 4500 Series CMOS Logic Gates - Plastic & Ceramic - DIP & SO - NEW. Condition: New. Listed at 1.20 USD. These are CMOS Logic (4500 & 14500 series) Manufacturers are primarily RCA, Texas Instruments, National Semiconductor, & Motorola These are factory new parts. They have never been installed and have not been recovered from manufactured electronic components. MC14502 - Strobed Hex Inverter/Buffer - Plastic & Ceramic MC14503 - Tri-State Hex Inverter/Buffer - Ceramic MC14510 - BCD Up/Down Counter - Plastic CD4515 - 4-Bit Latch/4-to-16 Line Decoder - Ceramic MC145157 - Parallel Input PLL Frequency Synthesizer - Plastic MC145158 - Parallel Input PLL Frequency Synthesizer - Plastic MC14518 - Dual BCD Up Counter - Ceramic MC14520 - Dual 4-Bit Binary Up Counter - Plastic & Ceramic MC14529 - Dual 4-Channel Analog Data Selector - Plastic MC14538 - Dual Precision Re-triggerable/Resetable Monostable Multi-vibrator - Plastic (SO16) CD4541 - Programmable Oscillator-Timer - Ceramic MC14541 - Programmable Oscillator-Timer - Plastic F4556 - Dual Binary to 1-of-4 Decoder/Demultiplexer (Inverting) - Ceramic MC14572 - Hex Buffer - Plastic MC14585 - 4-Bit Magnitude Comparator - Plastic MC145406 - Driver/Receiver EIA 232-E and CCITT V.28 - Plastic