DM9374N Equivalent & Substitute Parts

Part Overview

The DM9374N is a 7-segment LED driver IC manufactured by onsemi, housed in a 16-DIP package. This component is classified as a Power Management (PMIC) device designed to drive 7-segment LED displays. The DM9374N is currently listed as obsolete, making equivalent and substitute parts necessary for new designs, maintenance applications, or when original stock is unavailable. The part operates within a 4.75V to 5.5V supply voltage range with a maximum supply current of 50 mA and supports operating temperatures from 0°C to 70°C.

Substiute Parts

DM9374N

onsemiIn Stock: 1644DM9374N Datasheet

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CD4543BE

Texas InstrumentsIn Stock: 17911CD4543BE Datasheet

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ICL7136CMH+TD

Analog Devices Inc./Maxim IntegratedIn Stock: 1892ICL7136CMH+TD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM9374N is determined by the following critical parameters: package type (16-DIP form factor), display driver functionality (7-segment configuration), mounting method (through-hole), and electrical compatibility within the specified voltage and current ranges.

The identified substitute parts are grouped based on these criteria:

CD4543BE (Texas Instruments): Maintains the 16-DIP package and through-hole mounting. Supports 7-segment display driving with BCD interface. Operates across a wider voltage range (3V ~ 18V), encompassing the DM9374N's 4.75V ~ 5.5V requirement. Supply current is significantly lower at 40 nA. Product status is active with ROHS3 compliance.

ICL7136CMH+TD (Analog Devices Inc./Maxim Integrated): Provides display driver functionality for 4.6-digit displays in a 44-MQFP surface-mount package. Operates at 9V single supply with 0°C ~ 70°C temperature range matching the original part. This substitute represents a different package technology (surface mount versus through-hole) and higher digit resolution.

Parameter Comparison

Engineering Selection Recommendations

CD4543BE is the primary substitute for direct replacement in through-hole applications requiring 7-segment display driving. It maintains identical package geometry and mounting method, operates within the DM9374N's voltage specification, and is currently in active production with ROHS3 compliance. The significantly lower supply current (40 nA versus 50 mA) indicates improved power efficiency. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin beyond the original specification.

ICL7136CMH+TD serves as an alternative for applications where surface-mount technology is acceptable and higher display resolution (4.6 digits) is required. This part is active and ROHS3 compliant but requires PCB redesign due to different package type and mounting method. The 9V single supply requirement differs from the DM9374N's 4.75V ~ 5.5V range and must be evaluated against circuit design constraints.

Both substitute parts carry REACH Unaffected status and EAR99 ECCN classification, matching the original part's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can CD4543BE directly replace DM9374N in existing PCB layouts? A: Yes. Both parts use identical 16-DIP (0.300", 7.62mm) package geometry and through-hole mounting. PCB footprints are compatible without modification.

Q: What is the primary difference between CD4543BE and DM9374N? A: CD4543BE is designed for LCD display driving, while DM9374N drives LED displays. Both support 7-segment configuration. CD4543BE operates across a wider voltage range (3V ~ 18V) and draws significantly less supply current (40 nA).

Q: Is ICL7136CMH+TD suitable for direct replacement? A: No. ICL7136CMH+TD uses a 44-MQFP surface-mount package, requiring PCB redesign. It is intended for higher-resolution 4.6-digit display applications and operates at 9V, differing from the DM9374N's 4.75V ~ 5.5V requirement.

Q: What compliance certifications do the substitute parts carry? A: Both CD4543BE and ICL7136CMH+TD are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory profile of the original DM9374N.

Q: Which substitute part has the best availability? A: CD4543BE has the highest inventory (17,900 pcs) among the listed substitutes, followed by ICL7136CMH+TD (1,800 pcs). The original DM9374N has 1,593 pcs available but is obsolete.

Q: Can CD4543BE operate at the DM9374N's 4.75V ~ 5.5V supply voltage? A: Yes. CD4543BE's operating range of 3V ~ 18V fully encompasses the DM9374N's 4.75V ~ 5.5V specification.