74HC245D,653 vs 74HC259D

This in-depth comparison of the 74HC245D,653 and 74HC259D 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

Replacement verdict

Not a drop-in replacement

The 74HC259D and 74HC245D,653 are functionally unrelated logic ICs and cannot serve as substitutes for one another. The 74HC259D is an 8-bit addressable latch with decoder and storage registers, while the 74HC245D,653 is an octal bidirectional bus transceiver with 3-state outputs. Their internal architectures, pin functions, and intended applications differ fundamentally, making direct replacement impossible without complete circuit redesign.

Different logic function Different output type Different pin function Different application role

Parts at a glance

Part A

74HC245D,653

NXP USA Inc.

Lifecycle
Active
Stock
8186 PCS
Series
Logic - Buffers, Drivers, Receivers, Transceivers
+BOM RFQ
Part B

74HC259D

Toshiba Semiconductor and Storage

Lifecycle
Active
Stock
7207 PCS
Package
SOIC-20
Series
Logic - Latches
+BOM RFQ

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification 74HC245D,653 74HC259D
Series 74HC 74HC
Part Status Discontinued at DigiKey Active
Base Product Number 74HC245 -
Logic Type Transceiver, Non-Inverting D-Type, Addressable
Number of Elements 1 -
Number of Bits per Element 8 -
Output Type 3-State Standard
Current - Output High, Low 7.8mA, 7.8mA -
Voltage - Supply 2V ~ 6V 2V ~ 6V
Operating Temperature -40°C ~ 125°C (TA) -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount
Packaging Tape & Reel (TR) -
Circuit - 1:8
Independent Circuits - 1
Delay Time - Propagation - 22ns
Current - Output High Low - 5.2mA, 5.2mA
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