555 Timer Pulse Conversion
1:12
Considering.
Checking if I can make the changes for you.
Searching for a component.
Dispatching Library tool to find: "Find a 4066B CMOS quad bilateral analog switch IC suitable for a 9 V powered pulse-conditioning design. Prefer standard CD4066B or equivalent variants available in the Flux library, with datasheet and package information."
Creating search plan for: "Find a 4066B CMOS quad bilateral analog switch IC suitable for a 9 V powered pulse-conditioning design. Prefer standard CD4066B or equivalent variants available in the Flux library, with datasheet and package information. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 10"
Searching: "quad bilateral CMOS analog switch (CD4066B equivalent), suitable for single-supply operation around 9 V, DIP-14 or SOIC-14 package preferred, include datasheet and package information"
Found 40 results.
Searching: "Find a 4066B CMOS quad bilateral analog switch IC suitable for a 9 V powered pulse-conditioning design. Prefer standard CD4066B or equivalent variants available in the Flux library, with datasheet and package information. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 10"
Finished searching for a component.
Table
| Part Name | Purpose | Manufacturer Part Number | Quantity | Footprint | Datasheet link |
|---|---|---|---|---|---|
| Quad bilateral analog switch | Controlled by the 555 output to switch the analog path | CD4066BE | 1 | DIP-14 | ___ |
Started implementing a plan
#Goal
- Update an existing NE555 pulse-conditioning circuit to operate at 9 V DC, accept a latching trigger input, and produce a 40 ms active-low output pulse suitable for driving an analog switch.
#Implementation plan
1. **Update Power Supply and System Properties**
1. Change the project operating voltage from 5 V to 9 V and update decoupling components accordingly.
2. Verify that U1 (NE555 timer) and supporting components are rated for 9 V operation.
2. **Modify Trigger Input for Latching Behavior**
1. Rework the trigger conditioning network so that a latching input signal reliably initiates a single pulse event.
2. Integrate a mechanism (e.g., a transistor latch or an RC network combined with diode steering) to ensure that the trigger condition holds until the monostable cycle begins and then resets.
3. **Adjust Monostable Timing Network for 40 ms Pulse**
1. Recalculate and select new values for the resistor and capacitor in the timing network to achieve a pulse duration of 40 ms (targeting a product of 1.1*R*C ≈ 40 ms).
2. Replace or adjust the components labeled on the TIMING net accordingly.
4. **Configure Output Stage for Active-Low Behavior**
1. Modify the output stage so that the 555 timer produces an active-low pulse (logic low for 40 ms) to interface with the analog switch.
2. Possibly add an inverter stage or alter the load configuration to achieve the active-low output if the 555’s native output is not compatible.
5. **Documentation and Schematic Update**
1. Update schematic labels (PULSE_IN, PULSE_OUT, CTRL_REF, TIMING) to reflect the revised functionality.
2. Document the changes to component values and circuit functionality in the project notes.
#Success criteria
- The circuit operates from a 9 V DC supply with appropriate decoupling.
- A latching trigger input reliably initiates a single 40 ms output pulse.
- The monostable network produces an output that is active-low for 40 ms, suitable for driving the analog switch.
- All modifications are annotated and integrated into the project schematic.
Task completed.
4:08
Task completed.
3:52
Using Review (ERC/DRC) Tool.
Started: inspecting existing 555 pulse schematic
Using Calculator Tool.
Using BOM Tool.
Applied changes.
nets {
net +5V = U1:VCC, R1:P1, C2:P1, R2:P1, U1:R;
net GND = C4:P2, R4 P2 - C4 P2:GND, GND:GND, R4:P2, R3:P1, C3:P2, U1:GND, C2:P2, R5:P2, C1:P2;
net TRIG_NODE = R3:P2, C4:P1, U1:TR, R2:P2;
net PULSE_IN = R4:P1;
net PULSE_OUT = U1:Q, R5:P1;
net CTRL_REF = C3:P1, U1:CV;
net TIMING = R1:P2, U1:DIS, U1:THR, C1:P1;
}
Updated 1 document property
0:04
Set Operating Voltage to "9V"
Task completed.
3:34
Dispatching Library tool to find: "CMOS 555 timer IC, SOIC-8 preferred, 9V operation, direct replacement for NE555 in monostable circuit, active output driving CD4066B control input, currently placed NE555D is obsolete so find an active lifecycle 555-compatible timer with same basic function and standard package"
Started: updating 9V timing and latch trigger
Searching: "Pin‑compatible NE555 replacement: CMOS 555 timer suitable for monostable use, operates at 9V (or 2–18V range), SOIC‑8 (preferred) or DIP‑8, output able to directly drive CMOS inputs (e.g., CD4066), active push‑pull output"
Found 10 results.
Searching: "CMOS 555 timer IC, SOIC-8 preferred, 9V operation, direct replacement for NE555 in monostable circuit, active output driving CD4066B control input, currently placed NE555D is obsolete so find an active lifecycle 555-compatible timer with same basic function and standard package --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 5"
Finished searching for components.
Using Schematic Tool.
Finished searching for a component.
Added 3 components
0:02
Added 2x Generic Resistor as R6, R7 (Pins: P2, P1)
Added 1x CD4066BPWR as U2 (Pins: CONTROL_B, VSS, SIG_D_IN/OUT, SIG_D_OUT/IN, VDD, SIG_C_IN/OUT, CONTROL_C, SIG_C_OUT/IN, SIG_A_OUT/IN, CONTROL_A, SIG_B_OUT/IN, SIG_A_IN/OUT, SIG_B_IN/OUT, CONTROL_D)
Plan completed.
Reviews
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #powerjharwinbarrozo11.4M
- A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #genericsjharwinbarrozo15.5k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlinkjharwinbarrozo1.1M
Properties
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $0.79–$1.16 |
Digi-Key | $0.44–$1.75 |
LCSC | $0.82–$0.85 |
Mouser | $2.05 |
TME | $2.18 |
Verical | $0.67–$1.32 |
Assets
Assets are files uploaded to this project which can be used in various ways.
Controls
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