74HCT163N,652 Binary Counter IC - Equivalent & Substitute Parts

Part Overview

The 74HCT163N,652 is a 4-bit binary counter IC manufactured by NXP USA Inc., designed for synchronous counting applications with positive edge triggering. This component features a single 4-bit counting element with synchronous reset and operates across a supply voltage range of 4.5V to 5.5V. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

74HCT163N,652

NXP USA Inc.In Stock: 98674HCT163N,652 Datasheet

Current PartRFQ

CD74ACT163E

Harris CorporationIn Stock: 6141CD74ACT163E Datasheet

DirectRFQ

CD74HCT163E

Texas InstrumentsIn Stock: 2495CD74HCT163E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HCT163N,652 is determined by the following core parameters:

• Logic Type: Binary Counter (required match)
• Number of Elements: 1 (required match)
• Number of Bits per Element: 4 (required match)
• Direction: Up (required match)
• Reset Type: Synchronous (required match)
• Timing: Synchronous (required match)
• Trigger Type: Positive Edge (required match)
• Voltage - Supply: 4.5V ~ 5.5V (required match)
• Package / Case: 16-DIP (0.300", 7.62mm) (required match)
• Mounting Type: Through Hole (required match)

The identified substitute parts CD74HCT163E and CD74ACT163E satisfy all core functional and mechanical parameters, enabling direct substitution in circuit designs originally specified for the 74HCT163N,652.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring the 74HCT163N,652, the CD74HCT163E manufactured by Texas Instruments is the primary substitute. This part maintains identical functional specifications, operates within the same supply voltage range, and carries active product status with ROHS3 compliance certification. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin compared to the original part.

The CD74ACT163E from Harris Corporation presents an alternative substitute with identical functional parameters and superior count rate performance (80 MHz versus 45 MHz). However, this part carries obsolete product status and does not meet RoHS3 compliance requirements, limiting its applicability to legacy system maintenance or non-regulated applications.

Selection between CD74HCT163E and CD74ACT163E should prioritize compliance requirements and product lifecycle considerations specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT163E directly replace 74HCT163N,652 in existing circuit designs?

A: Yes. Both parts share identical functional specifications, including 4-bit binary counter architecture, synchronous operation, positive edge triggering, and 16-DIP package configuration. No circuit modifications are required.

Q: What is the significance of the count rate difference between substitute parts?

A: Count rate represents the maximum frequency at which the counter can operate reliably. The 74HCT163N,652 operates at 45 MHz, while CD74HCT163E operates at 20 MHz and CD74ACT163E at 80 MHz. Selection should confirm that the application's clock frequency does not exceed the substitute part's maximum count rate specification.

Q: Why is RoHS compliance status relevant for substitution?

A: RoHS3 compliance indicates adherence to hazardous substance restrictions required in regulated markets and applications. The CD74HCT163E maintains ROHS3 compliance matching the original part, while CD74ACT163E does not. Applications subject to regulatory requirements should prioritize the compliant substitute.

Q: Are there packaging or mounting differences between the substitute parts?

A: No. All three parts utilize identical 16-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical compatibility on printed circuit boards designed for the 74HCT163N,652.

Q: What is the operational temperature range difference, and does it affect substitution?

A: The original 74HCT163N,652 operates from -40°C to 125°C, while both substitutes extend the lower limit to -55°C. This expanded range provides additional thermal margin and does not restrict substitution; applications operating within the original temperature range remain fully compatible.