DM74S374N Equivalent & Substitute Parts

Part Overview

The DM74S374N is a logic integrated circuit functioning as a Flip Flop 1 Element D-Type 8 Bit with positive edge triggering in a 20-DIP (0.300", 7.62mm) through-hole package. Manufactured by onsemi, this component is classified as obsolete. Due to its obsolete status and limited availability from original sources, identifying equivalent substitute parts is essential for system maintenance, repair, and legacy design support.

Substiute Parts

DM74S374N

onsemiIn Stock: 1705DM74S374N Datasheet

Current PartRFQ

SN74S374N

Advanced Micro DevicesIn Stock: 2264SN74S374N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74S374N is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Series classification: 74S logic family
• Function: D-Type Flip Flop with 1 element, 8 bits per element
• Trigger mechanism: Positive edge triggering
• Package type: 20-DIP (0.300", 7.62mm) through-hole
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: 0°C ~ 70°C (TA)
• Mounting configuration: Through hole

The SN74S374N from Advanced Micro Devices meets all critical matching parameters and is classified as a direct manufacturer equivalent within the 74S logic series. Both components share identical package specifications, voltage requirements, temperature operating ranges, and functional classification as D-Type flip flops with 8-bit configuration and positive edge triggering.

Parameter Comparison

Engineering Selection Recommendations

Both the DM74S374N and SN74S374N are classified as obsolete components. Selection between these parts should be based on the following factors:

Availability and Inventory Status: The SN74S374N currently maintains higher inventory levels (2200 pcs) compared to the DM74S374N (1633 pcs), making it the preferred choice for immediate procurement requirements.

Performance Characteristics: The SN74S374N demonstrates a higher maximum clock frequency specification of 100 MHz versus the DM74S374N at 75 MHz. For applications operating at or below 75 MHz, both components are functionally equivalent. Applications requiring operation above 75 MHz but within the 100 MHz specification should utilize the SN74S374N.

Compliance Status: The DM74S374N carries REACH Unaffected status. The SN74S374N is classified as RoHS non-compliant. Selection should account for applicable regulatory requirements in the target application environment.

Output Configuration: The DM74S374N specifies non-inverted output type. The SN74S374N specifies tri-state and non-inverted output types, providing additional output control capability.

Frequently Asked Questions (FAQ)

Q: Can the SN74S374N directly replace the DM74S374N in existing designs?

A: Yes, the SN74S374N is a direct substitute for the DM74S374N. Both components share identical package specifications (20-DIP), supply voltage requirements (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and core functional classification as 8-bit D-Type flip flops with positive edge triggering. The SN74S374N's higher clock frequency specification (100 MHz vs. 75 MHz) and tri-state output capability provide equal or enhanced performance in equivalent circuit positions.

Q: What are the package compatibility considerations?

A: Both the DM74S374N and SN74S374N utilize identical 20-DIP (0.300", 7.62mm) through-hole packaging. Pin-to-pin compatibility is maintained, allowing direct socket substitution without PCB modifications. Through-hole mounting characteristics are identical between both components.

Q: Are there differences in output drive capability?

A: The DM74S374N specifies output current of 6.5mA (high) and 20mA (low). The SN74S374N specifies 6.5mA (high) with low output current not specified in the provided data. Both components maintain the same high-side output current specification. Applications dependent on specific low-side output current values should verify compatibility with the SN74S374N's actual specifications.

Q: How do the quiescent current specifications compare?

A: Both components specify identical quiescent current (Iq) of 110 mA at the specified operating voltage range of 4.75V ~ 5.25V. Power consumption characteristics are equivalent between the two parts.

Q: What compliance considerations apply to component selection?

A: The DM74S374N is REACH Unaffected. The SN74S374N is RoHS non-compliant. Applications subject to RoHS or REACH regulatory requirements should verify that the selected component meets applicable compliance mandates for the target market and application environment.