74ACT163PC Binary Counter IC Equivalent & Substitute Parts

Part Overview

The 74ACT163PC is a 4-bit binary counter IC manufactured by onsemi, housed in a 16-DIP package. This synchronous counter operates at a maximum count rate of 140 MHz with positive edge triggering and synchronous reset functionality. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, legacy design support, and component procurement.

Substiute Parts

74ACT163PC

onsemiIn Stock: 81074ACT163PC Datasheet

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CD74ACT163E

Harris CorporationIn Stock: 6141CD74ACT163E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT163PC is determined by the following critical parameters:

• Logic Function: Binary counter with 4-bit capacity, 1 element, up-counting direction
• Electrical Characteristics: Synchronous timing, positive edge trigger, synchronous reset
• Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Supply Voltage: 4.5 V ~ 5.5 V operating range
• Pin Configuration: Identical pinout required for direct substitution

The CD74ACT163E from Harris Corporation meets these core substitution criteria. Both parts share the same base product number (74ACT163), identical package form factor, and compatible electrical specifications within the allowed parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT163E serves as a direct functional substitute for the 74ACT163PC in applications where the following conditions are met:

• System clock frequency does not exceed 80 MHz (the lower count rate specification of the substitute)
• Operating temperature range of -40°C ~ 85°C is sufficient (the substitute supports extended range to -55°C ~ 125°C)
• Through-hole 16-DIP package form factor is required for PCB compatibility

Both parts are classified as obsolete products. The CD74ACT163E is RoHS non-compliant, while the 74ACT163PC is REACH unaffected. Component selection should account for regulatory requirements and supply chain availability. Both parts carry ECCN EAR99 classification and HTSUS code 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT163E replace the 74ACT163PC in all applications?

A: The CD74ACT163E is functionally compatible for applications operating at clock frequencies up to 80 MHz. If your system requires the full 140 MHz count rate capability of the 74ACT163PC, the substitute is not suitable. For lower-frequency applications, the substitute is electrically and mechanically compatible.

Q: Are the pin configurations identical between these parts?

A: Yes. Both the 74ACT163PC and CD74ACT163E use the 16-DIP (0.300", 7.62mm) package with identical pinout. Direct PCB substitution is possible without layout modifications.

Q: What is the difference in operating temperature ranges?

A: The 74ACT163PC operates from -40°C to 85°C, while the CD74ACT163E operates from -55°C to 125°C. The substitute provides extended low-temperature and high-temperature capability. If your application requires operation only within the -40°C to 85°C range, both parts are suitable.

Q: Why is the count rate different between these parts?

A: The 74ACT163PC has a maximum count rate of 140 MHz, while the CD74ACT163E is rated at 80 MHz. This represents a difference in propagation delay specifications between the two manufacturers' implementations. System clock frequency must not exceed 80 MHz when using the substitute.

Q: Are there RoHS or REACH compliance differences?

A: The 74ACT163PC is REACH unaffected. The CD74ACT163E is RoHS non-compliant. Regulatory requirements for your application or region should guide component selection.

Q: What packaging options are available for these parts?

A: Both parts are supplied in 16-DIP through-hole packages. The 74ACT163PC packaging details are not specified in standard form. The CD74ACT163E is supplied in tube packaging. Both are compatible with standard DIP sockets and through-hole PCB assembly processes.