CD4021BCM – ONSEMI

Overview

The ONSEMI CD4021BCM is an advanced 8-bit parallel-in/serial-out shift register designed for robust data acquisition and serial transmission. Its core strength lies in its ability to capture a parallel data word and output it serially, driven by a synchronous clock. A critical design consideration for this CMOS device is managing the trade-off between its wide operating voltage range (3V to 15V) and potential susceptibility to input capacitance loading, which can impact its maximum operating frequency beyond the specified propagation delays. This makes careful PCB layout and signal integrity analysis paramount for achieving optimal performance in demanding applications.

Key Features

• 8-bit parallel-to-serial conversion
• Synchronous clocking with asynchronous parallel load
• Wide operating supply voltage: 3V to 15V
• Extended temperature range: -55°C to +125°C
• SOIC-16 package (4mm width)
• Low static power dissipation

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Serial data acquisition from multiple sensors in industrial control systems
• Interface expansion for microcontrollers in embedded systems
• Data buffering and serial transmission in telecommunications equipment
• Peripheral interface for test and measurement instrumentation