CD4021BE vs CD40257BE

This in-depth comparison of the CD4021BE and CD40257BE provides valuable insights into their specifications and key features. We cover important factors in detail, including RoHS compliance, REACH status, series, mounting style, package type, and other relevant characteristics. Presenting the differences side by side simplifies component selection, making it easier for you to select the best option for your specific application.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Parts at a glance

Part A

CD4021BE

Harris Corporation

Lifecycle: Active
Stock: 7117 PCS
Package: PDIP-16
Series: Logic - Shift Registers

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Part B

CD40257BE

Texas Instruments

Lifecycle: Active
Stock: 4420 PCS
Package: DIP-16
Series: Logic - Signal Switches, Multiplexers, Decoders

+BOM RFQ

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification	CD4021BE	CD40257BE
Supplier	-	Rochester Electronics, LLC,Texas Instruments
Series	4000B	4000B
Part Status	Obsolete	Active
Type	-	Multiplexer
Circuit	-	4 x 1:2
Independent Circuits	-	1
Current - Output High Low	-	6.8mA, 6.8mA
Voltage Supply Source	-	Dual Supply
Voltage - Supply	3V ~ 18V	3V ~ 18V
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole
Logic Type	Shift Register	-
Output Type	Push-Pull	-
Number of Elements	1	-
Number of Bits per Element	8	-
Function	Parallel or Serial to Serial	-

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