FOSSEE eSim Summer Fellowship 2025 : IC contribution

[Anwesha06]

This pull request contains the contribution for the FOSSEE Summer Fellowship 2025 under the eSim domain.

The following ICs have been implemented using eSim, and their corresponding subcircuit files have been included:

1. CD74HC238- 3: 8 Demultiplexer / Decoder
2. SN74LS76A- Dual J-K Positive-Edge-Triggered Flip-Flops w/ Preset and Clear
3. SN74HC14 – Hex Schmitt Trigger
4. SN54LS181 – Arithmetic Logic Units
5. CD4025B – Triple 3-input CMOS NOR gate
6. SN74AS10 – Triple 3-input CMOS NAND gate
7. SN74ALS677A - 16-Bit Address Comparator
8. SN74LS91- 8 bit Shift registers
9. CD74HC4002 - High-Speed CMOS Logic Dual 4-Input NOR Gate
10. CD4012B – 4-Input CMOS NAND Gate
11. SN74159- 4 Line to 16 Line decoder/demultiplexer.
12. SN74LS147 – 10-line to 4-line priority encoder
13. SN74HC4020 – 14-Bit Asynchronous Binary Counters
14. SN74LS75 – 4-Bit Bistable latch
15. SN74LVC1G57 - Configurable Multiple-Function Gate
16. SN54S182 - Look-ahead carry generator
17. SN74AUP1G99 - Low-Power Ultra-Configurable Multiple-Function Gate with 3-State Outputs
18. SN74LS697 – Synchronous up/down counters with output registers and multiplexed 3-state outputs,
19. SN54ALS560A - Synchronous 4-bit counters with 3-state outputs
20. SN74ALS8161 – Synchronous 8-bit binary counter
21. SN74LVC8T245 8-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and 3-State Outputs

All contributed subcircuits were verified through simulation in eSim to confirm expected logic functionality.

Name: Anwesha Duara
FOSSEE Summer Fellow 2025