74HC163N Binary Counter IC Equivalent & Substitute Parts

Part Overview

The 74HC163N is a 4-bit binary counter IC manufactured by NXP USA Inc., designed for synchronous counting applications with positive edge triggering. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74HC163N operates across a wide supply voltage range of 2V to 6V and supports count rates up to 55 MHz, making it suitable for digital logic circuits requiring reliable binary counting functionality.

Substiute Parts

74HC163N,652

NXP USA Inc.In Stock: 111974HC163N,652 Datasheet

Current PartRFQ

SN74HC163N

Texas InstrumentsIn Stock: 1570SN74HC163N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC163N is determined by strict equivalence across the following critical parameters:

• Logic Type: Binary Counter (identical functional classification)
• Number of Bits per Element: 4 Bit (identical bit width)
• Number of Elements: 1 (identical element count)
• Direction: Up (identical counting direction)
• Reset Type: Synchronous (identical reset mechanism)
• Timing: Synchronous (identical timing architecture)
• Trigger Type: Positive Edge (identical trigger mechanism)
• Voltage - Supply: 2V ~ 6V (identical supply voltage range)
• Package / Case: 16-DIP (0.300", 7.62mm) (identical physical package)
• Mounting Type: Through Hole (identical mounting method)

The SN74HC163N manufactured by Texas Instruments meets all these critical substitution criteria, establishing it as a direct functional equivalent for the obsolete 74HC163N.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC163N from Texas Instruments is a direct substitute for the obsolete 74HC163N from NXP USA Inc. Both components maintain identical functional specifications across all critical substitution parameters: 4-bit binary counter architecture, synchronous reset and timing, positive edge triggering, 2V to 6V supply voltage range, and 16-DIP through-hole packaging.

Both parts are ROHS3 compliant and carry REACH Unaffected status, meeting current environmental and regulatory requirements. The SN74HC163N maintains active product status, ensuring ongoing availability and supply chain continuity. While the Texas Instruments variant specifies a maximum count rate of 36 MHz compared to the NXP part's 55 MHz, and an operating temperature range of -40°C to 85°C versus -40°C to 125°C, these differences do not affect functional equivalence for standard binary counting applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC163N directly replace the 74HC163N in existing designs?

A: Yes. Both components share identical logic type, bit width, element count, counting direction, reset mechanism, timing architecture, trigger type, supply voltage range, and 16-DIP through-hole package configuration. Direct pin-for-pin substitution is supported.

Q: Are there differences in operating temperature ranges between these parts?

A: The 74HC163N operates from -40°C to 125°C, while the SN74HC163N operates from -40°C to 85°C. Applications requiring operation above 85°C must use the original 74HC163N or identify alternative components with extended temperature specifications.

Q: What is the significance of the count rate difference?

A: The 74HC163N supports 55 MHz maximum count rate, while the SN74HC163N supports 36 MHz. For applications requiring count rates exceeding 36 MHz, the original 74HC163N specification must be maintained or alternative high-speed counter ICs must be evaluated.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both the 74HC163N and SN74HC163N are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: Does packaging differ between these components?

A: No. Both components use identical 16-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical compatibility in PCB designs without layout modifications.