| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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264 pcs
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264 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The CD4021B from Texas Instruments is an 8-stage static shift register belonging to the CD4000 technology family. It is designed for applications requiring parallel-to-serial data conversion and general-purpose register functions.
This device features standard CMOS input and push-pull output types. It supports a typical clock frequency of 8.5 MHz at a 10V supply, with a maximum supply current of 3000 µA. The operating temperature range is -55 to 125°C, making it suitable for various environmental conditions.
The CD4021B offers balanced outputs and positive input clamp diodes. It meets standard specifications for CMOS devices and is available in multiple package types including PDIP, SOIC, and TSSOP.
Key electrical characteristics include a maximum input current of 1 µA at 18V and noise margins of 1V, 2V, and 2.5V at 5V, 10V, and 15V supply respectively. The maximum output current low (IOL) and high (IOH) are both rated at 4.2 mA.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.64 | $0.64 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The typical clock frequency for the CD4021B is 8.5 MHz at a VDD - VSS of 10 V.
The CD4021B operates within a temperature range of -55 to 125°C.
The noise margin is 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
The maximum input current is 1 µA at 18 V over the full package-temperature range, and 100 nA at 18 V and 25°C.
The CD4021B is RoHS3 Compliant.
The Moisture Sensitivity Level (MSL) is 1.