74FCT162646ATPACT Equivalent & Substitute Parts

Part Overview

The 74FCT162646ATPACT is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 2 elements with 8 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 56-TSSOP package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74FCT162646ATPACT

Texas InstrumentsIn Stock: 69974FCT162646ATPACT Datasheet

Current PartRFQ

74ACT16543DGGR

Texas InstrumentsIn Stock: 215274ACT16543DGGR Datasheet

Parametric EquivalentRFQ

74FCT162543ATPACT

Texas InstrumentsIn Stock: 108174FCT162543ATPACT Datasheet

Parametric EquivalentRFQ

74FCT162646CTPACT

Cypress Semiconductor CorpIn Stock: 703174FCT162646CTPACT Datasheet

Parametric EquivalentRFQ

74FCT162652CTPACT

Texas InstrumentsIn Stock: 98574FCT162652CTPACT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74FCT162646ATPACT is determined by strict equivalence across the following critical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 56-TFSOP (0.240", 6.10mm Width)
• Mounting Type: Surface Mount

All identified substitute parts maintain identical electrical and mechanical specifications across these parameters, ensuring functional compatibility in applications originally designed for the 74FCT162646ATPACT.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring replacement of the obsolete 74FCT162646ATPACT, the 74ACT16543DGGR and 74FCT162646CTPACT are the primary candidates based on active product status and full compliance documentation.

The 74ACT16543DGGR, manufactured by Texas Instruments, maintains active product status and carries ROHS3 compliance certification. This part is available in Tape & Reel packaging with 2,138 units in current inventory.

The 74FCT162646CTPACT, manufactured by Cypress Semiconductor Corp, also maintains active product status and is available in bulk packaging with 6,939 units in current inventory. This variant represents the same base product number as the original part.

The 74FCT162543ATPACT and 74FCT162652CTPACT are functionally equivalent alternatives; however, both are classified as obsolete. These parts may be considered for applications where existing inventory must be maintained or where design continuity with legacy systems is required.

All substitute parts maintain identical electrical performance specifications and package dimensions, ensuring direct functional replacement without circuit redesign.

Frequently Asked Questions (FAQ)

Q: What makes these parts electrically equivalent to the 74FCT162646ATPACT?

A: All substitute parts maintain identical specifications across critical parameters: 2-element, 8-bit non-inverting transceiver configuration with 3-state output, 24mA output current capability, 4.5V to 5.5V supply voltage range, -40°C to 85°C operating temperature, and 56-TSSOP package dimensions.

Q: Can I use the 74ACT16543DGGR as a direct replacement?

A: Yes. The 74ACT16543DGGR is electrically and mechanically equivalent to the 74FCT162646ATPACT. The primary difference is product status: the 74ACT16543DGGR is active, while the original part is obsolete. No circuit modifications are required.

Q: What is the difference between the 74FCT162646CTPACT and the original 74FCT162646ATPACT?

A: Both parts share the same base product number and are electrically identical. The difference lies in packaging format (bulk versus cut tape) and manufacturer (Cypress Semiconductor Corp versus Texas Instruments). The 74FCT162646CTPACT is currently active in production.

Q: Are there packaging considerations when substituting these parts?

A: All substitute parts use the same 56-TFSOP surface mount package with 0.240" width and 6.10mm dimensions. Packaging format differences (tape & reel, cut tape, or bulk) affect procurement and handling but do not impact PCB assembly compatibility.

Q: Which substitute part should I select for new designs?

A: For new designs, select from parts with active product status: 74ACT16543DGGR or 74FCT162646CTPACT. Both maintain full compliance documentation and current manufacturing support.

Q: Do all substitute parts meet RoHS requirements?

A: The 74ACT16543DGGR, 74FCT162543ATPACT, and 74FCT162652CTPACT are ROHS3 compliant. The 74FCT162646CTPACT does not specify RoHS status in available documentation. Verify compliance requirements for your specific application.