component
SN74LVC1G123DCUR
Public Unreviewedby Ray
Texas Instruments Monostable Multivibrators, VSSOP-8-0.5mm. Datasheet-verified pinout, 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
markdownSN74LVC1G123DCUR
Texas Instruments · Monostable Multivibrators · VSSOP-8-0.5mm
SN74LVC1G123DCUR from Texas Instruments, in a VSSOP-8-0.5mm. 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 | A | input | Falling-edge sensitive trigger input (active-low A). B must be held high and CLR must be held high to trigger the one-shot on the falling edge of A. |
| 2 | B | input | Rising-edge sensitive trigger input. A must be held low and CLR must be held high for a rising edge on B to trigger the output pulse. |
| 3 | CLR | input | Active-low clear input; when low, the Q output pulse is terminated. Can also act as a rising-edge trigger input when A is held low and B is held high. |
| 4 | GND | power_in | Ground reference (0 V) for the device. |
| 5 | Q | output | Monostable pulse output. Drives high for the one-shot pulse duration determined by the external Rext/Cext timing network (or terminated by CLR). |
| 6 | Cext | passive | Timing capacitor connection. External capacitor is connected between Cext (pin 6) and Rext/Cext (pin 7) to set the output pulse width. |
| 7 | Rext/Cext | passive | Junction of external timing resistor and capacitor. Rext ties from this pin to VCC (min Rext: 5 kΩ at VCC=2 V, 1 kΩ at VCC≥3 V); Cext ties from this pin to Cext (pin 6). Must not be tied directly to VCC or GND. |
| 8 | VCC | power_in | Supply voltage input. Recommended operating range 1.65 V to 5.5 V (data retention min 1.5 V); absolute maximum 6.5 V. Bypass locally to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.5mm |
| Category | Logic |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SN74LVC1G123DCURSN74LVC1G123DCURDCUTSN74LVC1G123DCURDCTRSN74LVC1G123DCURYZPR
CAD (KiCad official)
- Symbol:
SN74LVC1G123DCUR - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
6a0cde0b37ee8ff1, 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).