Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | 8-stage parallel/serial-input shift register |
| Supply range | 3 V to 18 V |
| Typical clock rate | 12 MHz at 10 V |
| Load function | Asynchronous parallel load |
| Outputs | Serial output / selected intermediate outputs |
| Package | SOIC-16 |
| Temperature range | -55°C to +125°C |
| Product status | Active |
Product Overview
The CD4021BM96 is TI’s active SOIC-16 tape-and-reel orderable for the CD4021B 8-stage static shift register. It supports asynchronous parallel loading and serial shifting for input expansion and parallel-to-serial conversion.
The asynchronous parallel-load behavior distinguishes CD4021B from related shift registers. Firmware timing should reflect that control method rather than assuming all parallel-in CMOS shift registers load on a clock edge.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Stages | 8 |
| Supply voltage | 3–18 V |
| Parallel load | Asynchronous |
| Typical clock rate | 12 MHz at 10 V |
| Catalog max frequency | 8.5 MHz summary value |
| Input current | 1 µA max at 18 V over full temperature range |
| Noise margin | 1 V / 2 V / 2.5 V at 5 / 10 / 15 V |
| Output current | ±4.2 mA class |
| Operating temperature | -55°C to +125°C |
| Package | SOIC-16 |
Design Considerations
Tie control inputs to defined levels when unused. Because the register is static, data retention does not require a minimum clock frequency.
Clock and parallel-load timing depend on supply voltage, so use the datasheet limits at the actual VDD.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
