# CD4538BE

**lingxingic** · Monostable Multivibrators · DIP-16

CD4538BE from lingxingic, in a DIP-16. 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 | 1CEXT | passive | External capacitor connection for timing network, always connected to ground. |
| 2 | 1REXT/CEXT | passive | External resistor and capacitor timing network connection point for monostable multivibrator 1. |
| 3 | 1CD,  | input | Direct reset input (active LOW) that immediately terminates the output pulse for monostable multivibrator 1. |
| 4 | 1B | input | Input triggered by LOW-to-HIGH transitions for monostable multivibrator 1. |
| 5 | 1A,  | input | Input triggered by HIGH-to-LOW transitions for monostable multivibrator 1. |
| 6 | 1Q | output | Output of monostable multivibrator 1. |
| 7 | 1Q,  | output | Complementary output (active LOW) of monostable multivibrator 1. |
| 8 | VSS | power_in | Ground reference (0V). |
| 9 | 2Q,  | output | Complementary output (active LOW) of monostable multivibrator 2. |
| 10 | 2Q | output | Output of monostable multivibrator 2. |
| 11 | 2A,  | input | Input triggered by HIGH-to-LOW transitions for monostable multivibrator 2. |
| 12 | 2B | input | Input triggered by LOW-to-HIGH transitions for monostable multivibrator 2. |
| 13 | 2CD,  | input | Clear direct input (active LOW) that immediately terminates the output pulse for monostable multivibrator 2. |
| 14 | 2REXT/CEXT | passive | External resistor and capacitor timing network connection point for monostable multivibrator 2. |
| 15 | 2CEXT | passive | External capacitor connection for timing network, always connected to ground. |
| 16 | VDD | power_in | Supply voltage (3V to 12V recommended operating range). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| Package | DIP-16 |
| Category | Logic |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `CD4538BE`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files: `cd4538be-etched.step` / `cd4538be-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd4538be.step` / `cd4538be.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [lingxingic datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603388804195491840) (17 pp, sha256 `03e1dc4c8d472ba1`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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).

[Datasheet PDF](docs/cd4538be-datasheet.pdf)