74ACT16863DLR Equivalent & Substitute Parts

Part Overview

The 74ACT16863DLR is a non-inverting transceiver logic IC manufactured by Texas Instruments, configured with 2 elements and 9 bits per element, housed in a 56-SSOP package. This part is classified as obsolete, which necessitates identification of functionally compatible alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ACT16863DLR
Manufacturer	Texas Instruments
Series	74ACT
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	9
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-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT16863DLR is determined by the following critical parameters:

Primary Substitution Criteria:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 2
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-BSSOP (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Secondary Consideration:

Number of Bits per Element: The 74ACT16863DLR features 9 bits per element. Substitute parts with 8 bits per element (74ACT16543DLR, 74ACT16646DLR, 74ACT16652DLR, 74ACT16657DLR, 74FCT162652ATPVCT, CY74FCT162543TPVCT) are functionally compatible within applications where the reduced bit width accommodates system requirements.

Recommended Direct Replacement:

74ACT16863DL: Identical part number base with active product status and ROHS3 compliance, differing only in packaging format (Tube vs. Tape & Reel).

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage (V)	Temp Range (°C)	Package	Status	RoHS
74ACT16863DLR	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	9	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Obsolete	Non-compliant
74ACT16863DL	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	9	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Active	ROHS3 Compliant
74ACT16543DLR	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Active	ROHS3 Compliant
74ACT16646DLR	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Active	ROHS3 Compliant
74ACT16652DLR	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Active	ROHS3 Compliant
74ACT16657DLR	Texas Instruments	74ACT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Active	ROHS3 Compliant
74FCT162652ATPVCT	Texas Instruments	74FCT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Obsolete	ROHS3 Compliant
CY74FCT162543TPVCT	Texas Instruments	74FCT	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	56-BSSOP	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: 74ACT16863DL is the preferred substitute. It maintains identical electrical and mechanical specifications to the 74ACT16863DLR while offering active product status and ROHS3 compliance. The only difference is packaging format (Tube vs. Tape & Reel), which does not affect functional performance.

Secondary Recommendations (8-Bit Alternatives): For applications where 8-bit per element configuration is acceptable, the following active parts provide superior compliance and availability:

74ACT16543DLR: Active status, ROHS3 compliant, 1871 units in stock
74ACT16646DLR: Active status, ROHS3 compliant, 2200 units in stock
74ACT16652DLR: Active status, ROHS3 compliant, 931 units in stock
74ACT16657DLR: Active status, ROHS3 compliant, 768 units in stock

All secondary alternatives share identical electrical parameters (supply voltage, output current, operating temperature, 3-state output configuration) and package specifications with the original part.

Obsolete Series Alternatives: 74FCT162652ATPVCT and CY74FCT162543TPVCT are obsolete parts with ROHS3 compliance. These are not recommended for new designs due to product status, though they remain functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16543DLR, 74ACT16646DLR, 74ACT16652DLR, or 74ACT16657DLR directly replace 74ACT16863DLR?

A: These parts are functionally compatible substitutes with one critical difference: they feature 8 bits per element instead of 9. All other electrical parameters (supply voltage, output current, operating temperature, 3-state output) and mechanical specifications (56-BSSOP package, surface mount) are identical. Compatibility depends on whether your application requires the full 9-bit configuration or can operate with 8 bits per element.

Q: What is the difference between 74ACT16863DLR and 74ACT16863DL?

A: Both parts are identical in electrical and mechanical specifications. The difference is packaging format: 74ACT16863DLR is supplied in Tape & Reel format, while 74ACT16863DL is supplied in Tube format. Additionally, 74ACT16863DL has active product status and ROHS3 compliance, whereas the DLR variant is obsolete and RoHS non-compliant.

Q: Why are there differences in RoHS compliance between the main part and substitutes?

A: The 74ACT16863DLR is classified as RoHS non-compliant, reflecting its obsolete status. Active substitute parts (74ACT16863DL, 74ACT16543DLR, 74ACT16646DLR, 74ACT16652DLR, 74ACT16657DLR) are ROHS3 compliant, meeting current environmental regulations.

Q: Are 74FCT162652ATPVCT and CY74FCT162543TPVCT suitable replacements?

A: These parts are functionally equivalent but are classified as obsolete. While they maintain identical electrical parameters and ROHS3 compliance, they are not recommended for new designs. Active alternatives from the 74ACT series are preferred.

Q: Does the 56-BSSOP package remain consistent across all substitutes?

A: Yes. All listed substitutes use the 56-BSSOP package (0.295", 7.50mm Width) with surface mount configuration, ensuring mechanical compatibility with existing PCB layouts.

Q: What inventory levels are available for active substitutes?

A: 74ACT16646DLR has the highest availability at 2200 units in stock. 74ACT16543DLR has 1871 units, 74ACT16652DLR has 931 units, and 74ACT16657DLR has 768 units in stock.

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