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CD4521BM96
Public Made by Adomby adom
Texas Instruments Counters, Dividers, SOIC-16. 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
markdownCD4521BM96
Texas Instruments · Counters, Dividers · SOIC-16
CD4521BM96 from Texas Instruments, in a SOIC-16. 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 | Q24 | output | Counter output Q24 with count capacity 2^24 = 16,777,216. |
| 2 | RESET | input | A HIGH on RESET sets the counter to the all-0's state and disables the oscillator (input range -0.5V to VDD+0.5V). |
| 3 | VSS' | power_in | VSS' pin brought out from the crystal oscillator to allow use of external resistors for low-power operation. |
| 4 | OUT 2 | output | Oscillator output 2 used with IN1/IN2 to build RC or crystal oscillator circuits. |
| 5 | VDD' | power_in | VDD' pin brought out from the crystal oscillator to allow use of external resistors for low-power operation. |
| 6 | IN 2 | input | Oscillator input 2; the count is advanced on the negative transition of IN1 (and IN2). |
| 7 | OUT 1 | output | Oscillator output 1 used with IN1 for RC or crystal oscillator circuits. |
| 8 | VSS | power_in | Ground (VSS) supply terminal; supply voltages are referenced to it. |
| 9 | IN 1 | input | Oscillator/clock input 1; count advances on its negative transition, and it should be tied HIGH or LOW when not in use. |
| 10 | Q18 | output | Counter output Q18 with count capacity 2^18 = 262,144. |
| 11 | Q19 | output | Counter output Q19 with count capacity 2^19 = 524,288. |
| 12 | Q20 | output | Counter output Q20 with count capacity 2^20 = 1,048,576. |
| 13 | Q21 | output | Counter output Q21 with count capacity 2^21 = 2,097,152. |
| 14 | Q22 | output | Counter output Q22 with count capacity 2^22 = 4,194,304. |
| 15 | Q23 | output | Counter output Q23 with count capacity 2^23 = 8,388,608. |
| 16 | VDD | power_in | Positive supply; recommended 3 V to 18 V, absolute maximum -0.5V to +20V referenced to VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
CD4521BM96 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
cd4521bm96-etched.step/cd4521bm96-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd4521bm96.step/cd4521bm96.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (21 pp, sha256
0f0f6fb3629f4701, retrieved 2026-10-01, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-opus-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).