CD4044BCN Equivalent & Substitute Parts

Part Overview

The CD4044BCN is a quad S-R latch logic integrated circuit manufactured by onsemi, designed for applications requiring set-reset latch functionality with tri-state output capability. This device operates across a wide supply voltage range of 3V to 15V and features four independent 1:1 latch circuits in a 16-pin DIP package. The CD4044BCN is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations where legacy component compatibility is required.

Substiute Parts

CD4044BCN

onsemiIn Stock: 15258CD4044BCN Datasheet

Current PartRFQ

CD4044BE

Harris CorporationIn Stock: 34726CD4044BE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD4044BCN is determined by strict alignment of the following critical parameters:

• Logic Function: S-R Latch with 4 independent circuits at 1:1 ratio
• Output Configuration: Tri-state output capability
• Package Type: 16-pin DIP form factor (0.300", 7.62mm pitch)
• Mounting Method: Through-hole technology
• Supply Voltage Range: Minimum 3V operation and maximum voltage rating of 15V or higher
• Operating Temperature Range: -55°C to 125°C
• Circuit Count: Exactly 4 independent latch circuits

The CD4044BE qualifies as a direct substitute based on matching all functional and physical parameters within the allowed tolerance specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

The CD4044BE manufactured by Harris Corporation is a qualified substitute for the CD4044BCN. Both devices are classified as obsolete products, indicating limited availability through standard distribution channels. The CD4044BE demonstrates electrical performance characteristics that meet or exceed the CD4044BCN specifications: the extended supply voltage range (3V to 18V versus 3V to 15V) provides additional operational margin, the faster propagation delay (50ns versus 60ns) represents improved timing performance, and the symmetric output current specification (6.8mA for both high and low states) ensures consistent drive capability.

Pin-for-pin compatibility is maintained through identical 16-DIP packaging and through-hole mounting configuration. Both devices operate across the full industrial temperature range of -55°C to 125°C. The CD4044BE is classified as RoHS non-compliant, consistent with the obsolete status of both components in this product category.

Frequently Asked Questions (FAQ)

Q: Can the CD4044BE be used as a direct replacement for the CD4044BCN in existing designs?

A: Yes. The CD4044BE is pin-compatible and functionally equivalent. Both devices feature identical 16-DIP packaging, four independent S-R latch circuits with tri-state outputs, and matching operating temperature ranges. The CD4044BE's extended supply voltage range and faster propagation delay represent performance improvements over the original specification.

Q: What are the key differences between the CD4044BCN and CD4044BE?

A: The primary differences are manufacturer origin (onsemi versus Harris Corporation) and electrical performance characteristics. The CD4044BE supports a higher maximum supply voltage (18V versus 15V), exhibits faster propagation delay (50ns versus 60ns), and provides symmetric output current specifications (6.8mA for both high and low states versus 3mA and 6.8mA respectively).

Q: Are there any package or mounting differences between these devices?

A: No. Both the CD4044BCN and CD4044BE use identical 16-pin DIP packaging with 0.300-inch (7.62mm) pitch and through-hole mounting configuration. No PCB layout modifications are required for substitution.

Q: What is the significance of the obsolete product status?

A: Both devices are classified as obsolete, indicating they are no longer in active production. This status necessitates sourcing from inventory stock or secondary markets. Availability may be limited, and long-term supply cannot be guaranteed. For new designs, evaluation of current-generation latch alternatives is recommended.

Q: How do the output current specifications affect circuit design?

A: The CD4044BCN specifies asymmetric output current (3mA high, 6.8mA low), while the CD4044BE provides symmetric output current (6.8mA for both states). The CD4044BE's symmetric specification ensures consistent drive capability across both logic states, potentially simplifying load analysis and improving signal integrity in applications with balanced source and sink requirements.

Q: Are there compliance or certification differences between these parts?

A: The CD4044BE is RoHS non-compliant, consistent with its obsolete classification. Both devices carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The CD4044BCN carries MSL Level 1 (Unlimited) moisture sensitivity rating. Compliance requirements should be evaluated based on specific application and regulatory environment.