74ABT374CSJ Equivalent & Substitute Parts

Part Overview

The 74ABT374CSJ is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering in a 20-SOIC package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ABT series base platform ensures functional compatibility across qualified alternatives from active manufacturers.

Key Parameters

Parameter	Value
Function	D-Type Flip Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Trigger Type	Positive Edge
Clock Frequency	200 MHz
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package Type	20-SOIC

Substitute Part Grouping Explanation

Substitution eligibility for the 74ABT374CSJ is determined by the following critical parameters:

Logic Function: D-Type flip-flop with 1 element, 8-bit configuration
Output Characteristics: Tri-state, non-inverted output
Trigger Mechanism: Positive edge triggering
Clock Performance: 200 MHz operation capability
Electrical Specifications: 4.5V to 5.5V supply voltage, -40°C to 85°C operating range
Package Compatibility: 20-SOIC surface mount package

All qualified substitutes maintain these core functional and electrical parameters. Variations in propagation delay, quiescent current, and input capacitance remain within acceptable tolerances for standard logic applications. Package dimensions may vary within the 20-SOIC specification.

Parameter Comparison

Parameter	74ABT374CSJ (onsemi)	SN74ABT374ANSR (TI)	SN74ABT374ADW (TI)	SN74ABT374ADWR (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Type	D-Type	D-Type	D-Type	D-Type
Number of Elements	1	1	1	1
Number of Bits per Element	8	8	8	8
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Clock Frequency	200 MHz	200 MHz	200 MHz	200 MHz
Max Propagation Delay @ 5V, 50pF	5ns	6.6ns	5.1ns	5.1ns
Current - Output High, Low	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Iq)	50 µA	250 µA	250 µA	250 µA
Input Capacitance	5 pF	4.6 pF	4.6 pF	4.6 pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-SOIC (0.209", 5.30mm Width)	20-SOIC (0.209", 5.30mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74ABT374ANSR is the primary substitute for direct replacement of the 74ABT374CSJ. This Texas Instruments part maintains identical package dimensions (20-SOIC 0.209" width), matching the original PCB footprint precisely. The SN74ABT374ANSR is active in production with ROHS3 compliance and carries the same MSL rating. Propagation delay of 6.6ns remains within acceptable logic timing margins for standard applications.

SN74ABT374ADW and SN74ABT374ADWR are functionally equivalent alternatives with active product status and ROHS3 compliance. These parts feature a wider 20-SOIC package (0.295" width) and require PCB layout verification for footprint compatibility. Both maintain identical electrical performance specifications. The ADWR variant is supplied in tape and reel packaging, while ADW is supplied in tube packaging.

All three Texas Instruments substitutes are qualified alternatives based on matching functional specifications, active manufacturing status, and regulatory compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT374ANSR replace 74ABT374CSJ without PCB modifications?

A: Yes. The SN74ABT374ANSR uses the same 20-SOIC (0.209", 5.30mm width) package as the original 74ABT374CSJ, ensuring direct footprint compatibility without PCB layout changes.

Q: What is the difference between SN74ABT374ADW and SN74ABT374ADWR?

A: Both parts are functionally identical. The primary difference is packaging format: ADW is supplied in tube packaging, while ADWR is supplied in tape and reel format. Select based on procurement and assembly requirements.

Q: Are the Texas Instruments substitutes compatible with existing 74ABT374CSJ designs?

A: Yes. All three Texas Instruments parts (SN74ABT374ANSR, SN74ABT374ADW, SN74ABT374ADWR) maintain the same logic function, output characteristics, trigger mechanism, clock frequency, and electrical specifications as the original 74ABT374CSJ.

Q: Why does the SN74ABT374ANSR have higher propagation delay than the original?

A: The SN74ABT374ANSR propagation delay of 6.6ns versus the original 5ns represents a minor variation within the 74ABT series specification tolerance. This difference does not affect functionality in standard logic applications operating at 200 MHz.

Q: What is the impact of different package widths between substitutes?

A: The SN74ABT374ADW and SN74ABT374ADWR use a wider 20-SOIC package (0.295" versus 0.209"). Verify PCB layout spacing and component placement clearances before selecting these alternatives. The SN74ABT374ANSR maintains the original package width and requires no layout verification.

Q: Are all substitutes RoHS compliant?

A: Yes. All three Texas Instruments substitutes (SN74ABT374ANSR, SN74ABT374ADW, SN74ABT374ADWR) are ROHS3 compliant. The original 74ABT374CSJ RoHS status was not specified in the available data.

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