DM7445N Equivalent & Substitute Parts

Part Overview

The DM7445N is a BCD to Decimal Decoder/Driver logic IC manufactured by onsemi in a 16-PDIP package. This component converts binary-coded decimal (BCD) inputs into decimal outputs suitable for driving display or control circuits. The DM7445N is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional equivalence in decoder operation, electrical characteristics, and physical packaging to ensure direct replacement capability.

Substiute Parts

DM7445N

onsemiIn Stock: 1546DM7445N Datasheet

Current PartRFQ

SN7445N

Texas InstrumentsIn Stock: 4989SN7445N Datasheet

DirectRFQ

SN74145N

Texas InstrumentsIn Stock: 2205SN74145N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM7445N is determined by strict alignment of the following parameters:

• Logic Function: BCD to Decimal Decoder operation (1 x 4:10 decoder circuit)
• Electrical Specifications: Supply voltage range 4.75V ~ 5.25V; operating temperature 0°C ~ 70°C
• Physical Package: 16-DIP (0.300", 7.62mm) form factor with 16-PDIP pin configuration
• Series Compatibility: 7400 logic family
• Regulatory Compliance: REACH Unaffected status; EAR99 classification

The SN7445N (Texas Instruments) and SN74145N (Texas Instruments) meet all substitution criteria. Both are active products in the 7400 series with identical package specifications and electrical operating ranges. The SN7445N is a direct functional equivalent with matching output current specifications. The SN74145N provides higher output current capability (80mA low-side drive) and serves as a substitute where increased drive capability is acceptable within the application circuit design.

Parameter Comparison

Engineering Selection Recommendations

SN7445N (Direct Substitute): Select this part for direct replacement of DM7445N in existing designs. The SN7445N is an active product from Texas Instruments with identical electrical specifications and package configuration. ROHS3 compliance and active product status ensure long-term availability and supply chain stability.

SN74145N (Alternative Substitute): Select this part when higher output current capability (80mA low-side drive) is required or beneficial to the application circuit. The SN74145N maintains full compatibility with the 16-DIP package and electrical operating range. ROHS3 compliance and active product status provide equivalent supply assurance.

Both substitute parts carry REACH Unaffected and EAR99 classifications, matching the regulatory profile of the original DM7445N. Selection between SN7445N and SN74145N depends solely on output current requirements within the target application.

Frequently Asked Questions (FAQ)

Q: Can SN7445N directly replace DM7445N without circuit modification? A: Yes. The SN7445N is a direct functional equivalent with matching supply voltage (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and 16-DIP package configuration. No circuit modifications are required.

Q: What is the difference between SN7445N and SN74145N? A: Both are 1 x 4:10 decoder ICs in 16-DIP packages with identical supply and temperature specifications. The primary difference is output current capability: SN7445N provides 1.6mA low-side drive, while SN74145N provides 80mA low-side drive. Select based on application current requirements.

Q: Are both substitute parts available in the same packaging format? A: Yes. Both SN7445N and SN74145N are supplied in 16-PDIP tube packaging, matching the through-hole mounting type of the original DM7445N.

Q: Do the substitute parts meet modern compliance standards? A: Yes. Both SN7445N and SN74145N are ROHS3 compliant and carry REACH Unaffected status, meeting current regulatory requirements. The DM7445N is not specified for these certifications due to its obsolete status.

Q: Which substitute should be selected for new designs? A: For new designs, either SN7445N or SN74145N is acceptable. SN7445N is recommended for standard applications matching original specifications. SN74145N is recommended when higher output drive current is required or anticipated in the circuit design.