CD74AC163E-NG Equivalent & Substitute Parts

Part Overview

The CD74AC163E-NG is a 4-bit binary counter IC manufactured by Texas Instruments, designed for synchronous counting applications with positive edge triggering. This component belongs to the 74AC logic series and operates across a wide supply voltage range of 1.5 V to 5.5 V with a maximum count rate of 90 MHz.

The CD74AC163E-NG is classified as an obsolete product. Finding equivalent substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance where original stock becomes depleted or unavailable.

Substiute Parts

CD74AC163E-NG

Texas InstrumentsIn Stock: 1200CD74AC163E-NG Datasheet

Current PartRFQ

CD74AC163M96

Texas InstrumentsIn Stock: 5878CD74AC163M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74AC163E-NG is determined by strict equivalence across the following core parameters:

Functional Parameters: Logic type (Binary Counter), number of bits per element (4), direction (Up), reset type (Synchronous), timing (Synchronous), trigger type (Positive Edge), and count rate (90 MHz) must remain identical.

Electrical Parameters: Supply voltage range (1.5 V ~ 5.5 V) and operating temperature range (-55°C ~ 125°C) must be maintained or exceeded.

Series Compliance: The substitute part must belong to the 74AC logic series to ensure functional and electrical compatibility.

Regulatory Compliance: RoHS3 compliance status must be maintained.

The primary distinction between the main part and its substitute lies in the packaging and mounting technology: the CD74AC163E-NG uses through-hole mounting (16-DIP), while the substitute uses surface-mount technology (16-SOIC). Both packages contain identical die functionality and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The CD74AC163M96 is the direct functional equivalent of the CD74AC163E-NG. Both parts share identical electrical specifications, logic functionality, and performance characteristics across all operating parameters.

The primary consideration for part selection is mounting technology and board assembly process:

Through-Hole Assembly: The CD74AC163E-NG (16-DIP) is suitable for through-hole PCB designs and manual assembly processes. However, this part is classified as obsolete, limiting future availability.

Surface-Mount Assembly: The CD74AC163M96 (16-SOIC) is the active product offering from Texas Instruments and is suitable for automated surface-mount assembly processes. This part maintains full functional and electrical equivalence while offering superior availability and compliance status.

Both parts maintain ROHS3 compliance and are manufactured by Texas Instruments under the 74AC series designation. Selection between these parts should be based on PCB assembly capability and design requirements rather than electrical or functional considerations.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC163M96 directly replace the CD74AC163E-NG in existing designs?

A: Electrical and functional replacement is complete. The CD74AC163M96 provides identical logic functionality, count rate, voltage specifications, and temperature range. However, physical replacement requires PCB redesign to accommodate the different package footprint (16-SOIC versus 16-DIP).

Q: What is the primary difference between these two parts?

A: The CD74AC163E-NG uses through-hole DIP packaging for manual or wave-soldering assembly. The CD74AC163M96 uses surface-mount SOIC packaging for automated pick-and-place assembly. All electrical and functional specifications are identical.

Q: Why is the CD74AC163E-NG classified as obsolete?

A: The CD74AC163E-NG is obsolete due to industry-wide transition from through-hole to surface-mount technology. Texas Instruments continues to manufacture the equivalent 74AC163 counter in surface-mount packages (CD74AC163M96).

Q: Are there any electrical differences between the 16-DIP and 16-SOIC packages?

A: No. Both packages contain identical silicon die and provide identical electrical performance. The package difference is purely mechanical and relates to assembly process compatibility.

Q: What is the inventory status of these parts?

A: The CD74AC163E-NG has 1090 pieces in stock as new original inventory. The CD74AC163M96 has 5857 pieces in stock as new original inventory in Tape & Reel format.

Q: Are both parts RoHS compliant?

A: Yes. Both the CD74AC163E-NG and CD74AC163M96 are ROHS3 compliant.