74HCT373D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT373D,652 is a D-Type Transparent Latch logic IC manufactured by Nexperia USA Inc., configured as a single-channel 8:8 latch with tri-state output in a 20-SOIC surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74HCT373 series provides transparent latch functionality suitable for data storage and bus interface applications in digital logic circuits operating at 4.5V to 5.5V supply voltage.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HCT373D,652
Manufacturer	Nexperia USA Inc.
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Independent Circuits	1
Voltage - Supply	4.5V ~ 5.5V
Delay Time - Propagation	14ns
Current - Output High, Low	6mA, 6mA
Operating Temperature	-40°C ~ 125°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HCT373D,652 is determined by strict equivalence across the following critical parameters:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8
Output Type: Tri-State
Independent Circuits: 1
Supply Voltage Range: 4.5V ~ 5.5V
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

All substitute parts listed maintain identical logic functionality and package specifications. Variations in propagation delay time, output current ratings, operating temperature range, and product status are noted but do not prevent functional substitution when application requirements are met. Compliance certifications (RoHS, REACH) and moisture sensitivity levels are provided for design and procurement considerations.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuit	Output Type	Supply Voltage	Propagation Delay	Output Current (High/Low)	Operating Temp	Package	Product Status	RoHS Status
74HCT373D,652	Nexperia USA Inc.	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	14ns	6mA, 6mA	-40°C ~ 125°C	20-SOIC	Obsolete	ROHS3 Compliant
74HCT373D,653	Nexperia USA Inc.	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	14ns	6mA, 6mA	-40°C ~ 125°C	20-SOIC	Active	ROHS3 Compliant
CD74HCT373M	Harris Corporation	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	35ns	6mA, 6mA	-55°C ~ 125°C	20-SOIC	Obsolete	RoHS non-compliant
CD74HCT373M96	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	35ns	6mA, 6mA	-55°C ~ 125°C	20-SOIC	Active	ROHS3 Compliant
CD74HCT373MG4	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	35ns	6mA, 6mA	-55°C ~ 125°C	20-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
MC74HCT373ADWG	onsemi	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	28ns	6mA, 6mA	-55°C ~ 125°C	20-SOIC	Active	ROHS3 Compliant
MC74HCT373ADWR2G	onsemi	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	28ns	6mA, 6mA	-55°C ~ 125°C	20-SOIC	Active	ROHS3 Compliant
MM74HCT373WMX	Fairchild Semiconductor	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	25ns	7.2mA, 7.2mA	-40°C ~ 85°C	20-SOIC	Active	Not specified
SN74HCT373DW	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	25ns	6mA, 6mA	-40°C ~ 85°C	20-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74HCT373DWR	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	4.5V ~ 5.5V	25ns	6mA, 6mA	-40°C ~ 85°C	20-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring the 74HCT373D,652, the following selection criteria apply:

Primary Recommendation - Active Status with ROHS3 Compliance:

74HCT373D,653 (Nexperia USA Inc.) - Direct equivalent with active product status and identical electrical specifications
CD74HCT373M96 (Texas Instruments) - Active status, ROHS3 compliant, extended operating temperature range (-55°C to 125°C)
MC74HCT373ADWR2G (onsemi) - Active status, ROHS3 compliant, tape & reel packaging, 28ns propagation delay
SN74HCT373DWR (Texas Instruments) - Active status, ROHS3 compliant, 25ns propagation delay

Secondary Options - Discontinued or Non-Compliant Status:

CD74HCT373M (Harris Corporation) - Obsolete status, RoHS non-compliant; use only when legacy compatibility is required
SN74HCT373DW (Texas Instruments) - Discontinued at DiGi Electronics; consider only if existing inventory is available
CD74HCT373MG4 (Texas Instruments) - Discontinued at DiGi Electronics; ROHS3 compliant but limited availability

Alternative with Extended Temperature Range:

MC74HCT373ADWG (onsemi) - Active status, operating temperature -55°C to 125°C, suitable for industrial applications

All substitute parts maintain functional equivalence in logic operation, package footprint, and pin configuration. Selection should prioritize active product status and ROHS3 compliance for new designs and long-term production sustainability.

Frequently Asked Questions (FAQ)

Q: Can I use 74HCT373D,653 as a direct replacement for 74HCT373D,652? A: Yes. Both parts are manufactured by Nexperia USA Inc. and share identical electrical specifications, logic type, circuit configuration, and package. The primary difference is product status: 74HCT373D,653 is active while 74HCT373D,652 is obsolete. The 653 variant is the recommended direct substitute.

Q: What is the difference between the various substitute parts? A: All substitutes maintain the same logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (Tri-State), and package (20-SOIC). Differences exist in propagation delay time (14ns to 35ns), output current ratings (6mA to 7.2mA), operating temperature range (-40°C to -55°C minimum), and product status (active, discontinued, or obsolete). These variations do not affect functional substitution when application timing and temperature requirements are met.

Q: Are all substitute parts ROHS3 compliant? A: No. CD74HCT373M (Harris Corporation) is RoHS non-compliant. All other substitutes listed are ROHS3 compliant. For applications requiring RoHS compliance, select from the ROHS3 compliant options.

Q: Does propagation delay variation affect substitution? A: Propagation delay differences (14ns to 35ns) do not prevent functional substitution. However, applications with strict timing requirements must verify that the selected substitute meets the maximum propagation delay specification. The 74HCT373D,652 specifies 14ns; substitutes with 25ns to 35ns delays are suitable for most general-purpose latch applications but may require timing verification in high-speed circuits.

Q: What is the difference between tape & reel and tube packaging? A: Packaging format affects procurement and handling. Tape & reel (TR) packaging is standard for automated assembly lines. Tube packaging is used for manual assembly or lower-volume applications. Both formats contain identical components; selection depends on manufacturing process requirements.

Q: Can I use MM74HCT373WMX as a substitute? A: Yes, functionally. However, MM74HCT373WMX has a reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C) and higher output current (7.2mA versus 6mA). Verify that your application does not require operation above 85°C before selecting this part.

Q: Which substitute offers the best long-term availability? A: SN74HCT373DWR (Texas Instruments) and MC74HCT373ADWR2G (onsemi) are both active products with ROHS3 compliance and strong manufacturer support, making them suitable for long-term production applications.

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