component
CD4541BNSR
Public Made by Adomby adom
Texas Instruments Timers / Clock Oscillators, SOP-14-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCD4541BNSR
Texas Instruments · Timers / Clock Oscillators · SOP-14-208mil
CD4541BNSR from Texas Instruments, in a SOP-14-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RTC | passive | Oscillator timing resistor external connection; resistor value in combination with CTC capacitor sets oscillator frequency per f = 1/(2.3 × RTC × CTC). |
| 2 | CTC | passive | Oscillator timing capacitor external connection; capacitor value in combination with RTC resistor sets oscillator frequency per f = 1/(2.3 × RTC × CTC). |
| 3 | RS | input | External oscillator series resistor terminal or external clock input; can accept external clock signal applied to replace internal oscillator circuit. |
| 4 | NC | unconnected | No connection; internally unconnected pin. |
| 5 | AUTO RESET | input | Automatic power-on reset control input; logic 0 enables automatic reset circuit, logic 1 disables auto reset to reduce power dissipation. |
| 6 | MASTER RESET | input | Manual reset input; positive pulse resets all internal counters and latches and sets output to high state. |
| 7 | VSS | power_in | Ground and negative supply terminal reference. |
| 8 | OUTPUT | output | Timer output terminal; provides Q or Q output from selected counter stage (8th, 10th, 13th, or 16th stage selected by A and B inputs). |
| 9 | Q/Q SELECT | input | Output polarity selection input; determines whether output is normal Q or inverted Q from the selected counter stage. |
| 10 | MODE | input | Mode selection input; logic 1 selects recycle (frequency divider) mode for continuous square wave output, logic 0 selects single-transition timer mode. |
| 11 | NC | unconnected | No connection; internally unconnected pin. |
| 12 | A | input | Frequency selection input A; used with B input to select which counter stage (8th, 10th, 13th, or 16th) provides the output. |
| 13 | B | input | Frequency selection input B; used with A input to select which counter stage (8th, 10th, 13th, or 16th) provides the output. |
| 14 | VDD | power_in | Positive supply voltage terminal; device operates from 3V minimum to 20V maximum rated over -55°C to 125°C temperature range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOP-14-208mil |
| Category | RTC/Clock Chip |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
CD4541BNSR - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOP-14-208mil (KiCad packages3D, STEP)
- 3D model files:
cd4541bnsr-etched.step/cd4541bnsr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd4541bnsr.step/cd4541bnsr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (22 pp, sha256
1c648629cd0ba6ed, retrieved 2026-10-03, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).