TLC555CDR

@@ -0,0 +1,58 @@+# TLC555CDR++**Texas Instruments** · Timers / Counters · SOIC-8++TLC555CDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Ground reference (0 V) for the device. |+| 2 | TRIG | input | Trigger input. When TRIG falls below 1/3 VDD, the internal flip-flop is set and OUT goes high; also starts the timing interval in monostable mode. |+| 3 | OUT | output | Push-pull CMOS output. Sources/sinks up to ~100 mA depending on VDD; swings between GND and near VDD. |+| 4 | RESET | input | Active-low reset. Pulling RESET below ~0.4 V forces OUT low and discharges the timing capacitor regardless of other inputs. Tie to VDD if unused. |+| 5 | CONT | input | Control voltage. Provides access to the internal 2/3 VDD reference of the upper comparator; can be driven externally to modulate timing or bypassed to GND with 10 nF for noise immunity. |+| 6 | THRES | input | Threshold input. When THRES rises above 2/3 VDD (or the voltage on CONT), the internal flip-flop is reset and OUT goes low. |+| 7 | DISCH | output | Discharge. Open-drain N-channel transistor to GND used to discharge the external timing capacitor when OUT is low. |+| 8 | VDD | power_in | Positive supply, 2 V to 15 V (18 V absolute max). Bypass to GND with a 100 nF ceramic near the device. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Clock/Timing |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `TLC555CDR`+- `TLC555CDRIDR`+- `TLC555CDRID`+- `TLC555CDRCP`+- `TLC555CDRIP`+- `TLC555CDRCDGKR`+- `TLC555CDRIDGKR`+- `TLC555CDRCPWR`+- `TLC555CDRIPWR`++## CAD (KiCad official)++- Symbol: `TLC555CDR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tlc555) (49 pp, sha256 `2141b3917cf4918a`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tlc555cdr-datasheet.pdf)

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