74HC245D,652 Equivalent & Substitute Parts

Part Overview

The 74HC245D,652 is a non-inverting transceiver logic IC manufactured by Nexperia USA Inc., designed for 8-bit bidirectional data transfer with 3-state output capability. This component operates across a 2V to 6V supply range and is housed in a 20-SOIC surface mount package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and production continuity. Substitute parts maintain functional equivalence while offering improved availability and active product status from alternative manufacturers.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	7.8mA, 7.8mA
Voltage - Supply	2V ~ 6V
Operating Temperature Range	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC245D,652 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Voltage - Supply: 2V ~ 6V
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Allowable Variations:

Operating Temperature Range: May extend beyond the original -40°C ~ 125°C specification
Current - Output High, Low: May vary within acceptable logic IC tolerances
Moisture Sensitivity Level: May differ based on manufacturer specifications
Product Status: Active or Last Time Buy status preferred over obsolete

All listed substitute parts maintain identical functional specifications for the 8-bit non-inverting transceiver architecture and are pin-compatible within the 20-SOIC package footprint.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Output Current (mA)	Supply Voltage	Operating Temp (°C)	Package	Product Status	MSL
74HC245D,652	Nexperia USA Inc.	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 125	20-SOIC	Obsolete	1
74HC245D,653	Nexperia USA Inc.	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 125	20-SOIC	Active	1
CD74HC245M96	Texas Instruments	Transceiver, Non-Inverting	5.2 / 5.2	2V ~ 6V	-55 ~ 125	20-SOIC	Active	1
MC74HC245ADWG	onsemi	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-55 ~ 125	20-SOIC	Active	3
MC74HC245ADWR2G	onsemi	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-55 ~ 125	20-SOIC	Active	3
MM74HC245AWM	onsemi	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Active	3
MM74HC245AWMX	onsemi	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Active	3
SN74HC245DW	Texas Instruments	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Discontinued at DiGi Electronics	1
SN74HC245DWR	Texas Instruments	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Active	1
SN74HC645DW	Texas Instruments	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Last Time Buy	1
SN74HC645DWR	Texas Instruments	Transceiver, Non-Inverting	7.8 / 7.8	2V ~ 6V	-40 ~ 85	20-SOIC	Active	1

Engineering Selection Recommendations

Primary Recommendation: 74HC245D,653 This Nexperia part is the direct functional equivalent with identical electrical specifications and MSL rating. It maintains the original operating temperature range of -40°C to 125°C and is currently in active production status with 2200 units available.

Secondary Recommendations (Extended Temperature Range):

MC74HC245ADWG and MC74HC245ADWR2G (onsemi) extend the operating temperature to -55°C ~ 125°C, suitable for applications requiring enhanced low-temperature performance. Both are ROHS3 compliant.

High-Volume Availability:

SN74HC245DWR (Texas Instruments) offers the largest inventory at 131,452 units with active product status, MSL 1 rating, and identical electrical specifications to the original part.

Temperature-Constrained Applications:

MM74HC245AWM and MM74HC245AWMX (onsemi) operate within -40°C ~ 85°C range. These are suitable for standard industrial applications where extended low-temperature operation is not required.

All substitute parts maintain ROHS3 compliance and are suitable for direct PCB footprint replacement in 20-SOIC surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can I use CD74HC245M96 as a direct replacement for 74HC245D,652? A: Yes. CD74HC245M96 maintains all critical functional parameters: 8-bit non-inverting transceiver, 3-state output, 2V ~ 6V supply, and 20-SOIC package. The output current specification is lower (5.2mA vs. 7.8mA), which is acceptable for most applications. The extended operating temperature range (-55°C ~ 125°C) provides additional margin.

Q: What is the difference between the onsemi and Texas Instruments variants? A: Both manufacturers produce functionally equivalent 74HC245 logic transceivers. Key differences are in Moisture Sensitivity Level (onsemi parts are MSL 3 vs. Texas Instruments MSL 1) and operating temperature ranges. Texas Instruments SN74HC245DWR offers the highest inventory availability.

Q: Are all substitute parts pin-compatible? A: Yes. All listed substitutes use the 20-SOIC package with identical pinout. Direct PCB replacement is possible without layout modifications.

Q: Which substitute should I choose for new designs? A: For new designs, select from parts with Active product status: 74HC245D,653, CD74HC245M96, MC74HC245ADWG, MC74HC245ADWR2G, MM74HC245AWM, MM74HC245AWMX, SN74HC245DWR, or SN74HC645DWR. Avoid Last Time Buy and Discontinued at DiGi Electronics status parts for long-term production.

Q: Does operating temperature range affect substitution eligibility? A: Operating temperature range does not disqualify a substitute if the original specification is met or exceeded. Parts with extended ranges (-55°C ~ 125°C) are suitable replacements for applications requiring only -40°C ~ 125°C operation.

Q: What does MSL rating mean for component selection? A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) parts have no time restrictions. MSL 3 (168 Hours) parts require controlled storage. Both are acceptable; MSL 1 offers greater handling flexibility.

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