CD74HC175EE4 Equivalent & Substitute Parts

Part Overview

The CD74HC175EE4 is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for digital signal processing and sequential logic applications. This device features 1 element with 4 bits per element, complementary output configuration, and positive edge triggering. The part is currently in active product status with 981 pieces available in new original inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when design requirements permit functional equivalents from alternative manufacturers. The CD74HC175E represents a parametric equivalent option with identical electrical and mechanical specifications, though with different manufacturer origin and product status considerations.

Substiute Parts

CD74HC175EE4

Texas InstrumentsIn Stock: 1077CD74HC175EE4 Datasheet

Current PartRFQ

CD74HC175E

Harris CorporationIn Stock: 1873CD74HC175E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC175EE4 is determined by strict parametric matching across electrical and mechanical specifications. The following criteria establish valid substitute relationships:

Electrical Parameters (Must Match Exactly):

• Logic type: D-Type flip-flop
• Number of elements: 1
• Number of bits per element: 4
• Output type: Complementary
• Trigger type: Positive Edge
• Clock frequency: 35 MHz
• Max propagation delay: 30 ns @ 6V, 50pF
• Voltage supply range: 2V to 6V
• Output current: 5.2mA (high and low)
• Quiescent current: 8 µA
• Input capacitance: 10 pF
• Operating temperature: -55°C to 125°C

Mechanical Parameters (Must Match Exactly):

• Package type: 16-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Supplier device package: 16-PDIP

The CD74HC175E meets all parametric requirements for direct substitution with the CD74HC175EE4 across all electrical and mechanical specifications listed above.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CD74HC175EE4 (Texas Instruments)

The CD74HC175EE4 is the recommended primary choice for new designs and applications. This part carries active product status, ensuring long-term availability and manufacturer support. The device is ROHS3 compliant, meeting current environmental and regulatory requirements for commercial and industrial applications. Current inventory of 981 pieces supports immediate procurement for production requirements.

Secondary Selection: CD74HC175E (Harris Corporation)

The CD74HC175E is a parametric equivalent suitable for substitution only when the primary part is unavailable. This part is classified as obsolete, indicating discontinued manufacturing and limited future availability. The device is RoHS non-compliant, which restricts its use in applications subject to RoHS regulations or customer specifications requiring RoHS compliance. Despite higher current inventory (1775 pieces), the obsolete status and non-compliance profile make this option suitable only for legacy system maintenance or applications with no regulatory constraints.

Compliance Considerations:

Applications requiring ROHS3 compliance must use CD74HC175EE4. Applications subject to REACH regulations or requiring REACH compliance documentation should verify the CD74HC175E status independently, as this information is not provided in the substitute part data.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC175E replace the CD74HC175EE4 in new product designs?

A: The CD74HC175E is electrically and mechanically equivalent to the CD74HC175EE4 across all specified parameters. However, the CD74HC175E is classified as obsolete and RoHS non-compliant. New designs should use the CD74HC175EE4 to ensure long-term availability and regulatory compliance.

Q: What is the difference between the CD74HC175EE4 and CD74HC175E?

A: Both parts are identical in electrical performance and mechanical packaging. The differences are: (1) Manufacturer origin (Texas Instruments vs. Harris Corporation), (2) Product status (Active vs. Obsolete), (3) RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant), and (4) Current inventory levels (981 vs. 1775 pieces).

Q: Are there any pin-to-pin compatibility issues between these parts?

A: No. Both the CD74HC175EE4 and CD74HC175E use identical 16-DIP (0.300", 7.62mm) through-hole packaging with the same pinout configuration. Direct board-level substitution is possible without PCB modifications.

Q: Which part should I select for a design requiring RoHS compliance?

A: The CD74HC175EE4 must be used. This part is ROHS3 compliant. The CD74HC175E is RoHS non-compliant and cannot be used in applications with RoHS requirements.

Q: Can I use the CD74HC175E in legacy equipment repair?

A: Yes. The CD74HC175E is suitable for repair and maintenance of existing systems that do not require RoHS compliance. The obsolete status does not affect functional performance in legacy applications where the part is already in use.

Q: What is the base product number for these parts?

A: The base product number is 74HC175, which identifies the core logic function and electrical specifications. Both the CD74HC175EE4 and CD74HC175E are variants of this base product.

Q: Are there any thermal or environmental differences between these parts?

A: No. Both parts operate across the identical temperature range (-55°C to 125°C) and have identical electrical characteristics across all specified parameters.