74ACT16861DLRG4 Equivalent & Substitute Parts

Part Overview

The 74ACT16861DLRG4 is a non-inverting transceiver IC featuring 2 elements with 10 bits per element and 3-state output capability in a 56-SSOP package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Series	74ACT
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	10
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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ACT16861DLRG4 is determined by the following critical parameters: logic type (non-inverting transceiver), number of elements (2), output type (3-state), supply voltage range (4.5V ~ 5.5V), output current capability (24mA), operating temperature range (-40°C ~ 85°C), and package type (56-BSSOP).

The substitute parts are grouped into two categories:

Direct Functional Equivalent: 74ACT16861DLR matches all electrical and mechanical parameters identically, differing only in packaging format (Tape & Reel vs. Tube) and product status (Active vs. Discontinued).

Parametric Equivalents: 74ACT16543DLR, 74ACT16646DLR, and 74ACT16657DLR share identical electrical specifications and package dimensions but feature 8 bits per element instead of 10 bits per element. These parts are suitable for applications where the reduced bit width is compatible with system requirements.

Cross-Series Parametric Equivalents: 74FCT162652ATPVCT and CY74FCT162543TPVCT belong to the 74FCT series and provide equivalent electrical performance with 8 bits per element. Both parts carry Obsolete product status.

Parameter Comparison

Part Number	Manufacturer	Series	Elements	Bits per Element	Output Type	Supply Voltage	Output Current (High/Low)	Operating Temp	Package	Product Status	Inventory
74ACT16861DLRG4	Texas Instruments	74ACT	2	10	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Discontinued	1124 Pcs
74ACT16861DLR	Texas Instruments	74ACT	2	10	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Active	2200 Pcs
74ACT16543DLR	Texas Instruments	74ACT	2	8	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Active	1871 Pcs
74ACT16646DLR	Texas Instruments	74ACT	2	8	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Active	2200 Pcs
74ACT16657DLR	Texas Instruments	74ACT	2	8	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Active	768 Pcs
74FCT162652ATPVCT	Texas Instruments	74FCT	2	8	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Obsolete	830 Pcs
CY74FCT162543TPVCT	Texas Instruments	74FCT	2	8	3-State	4.5V ~ 5.5V	24mA, 24mA	-40°C ~ 85°C	56-BSSOP	Obsolete	1018 Pcs

Engineering Selection Recommendations

Primary Selection: 74ACT16861DLR is the manufacturer-recommended direct equivalent. This part maintains identical electrical and mechanical specifications with Active product status and higher inventory availability (2200 pcs). Selection of this part eliminates any functional or compatibility concerns.

Secondary Selection: 74ACT16543DLR, 74ACT16646DLR, and 74ACT16657DLR are suitable alternatives when 8-bit per element configuration is compatible with system architecture. All three maintain Active product status and ROHS3 compliance. 74ACT16646DLR offers the highest inventory level (2200 pcs) among the 8-bit variants.

Tertiary Selection: 74FCT162652ATPVCT and CY74FCT162543TPVCT carry Obsolete product status and should be considered only when Active alternatives are unavailable. Both parts maintain equivalent electrical performance and ROHS3 compliance.

All substitute parts listed maintain identical supply voltage range, output current capability, operating temperature range, package dimensions, RoHS compliance status, and MSL rating as the original 74ACT16861DLRG4.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16861DLR directly replace 74ACT16861DLRG4?

A: Yes. 74ACT16861DLR is the direct functional equivalent with identical electrical specifications, output characteristics, and package dimensions. The difference is packaging format (Tape & Reel vs. Tube) and product status (Active vs. Discontinued).

Q: What is the difference between 10-bit and 8-bit variants?

A: The 74ACT16861DLRG4 features 10 bits per element, while 74ACT16543DLR, 74ACT16646DLR, and 74ACT16657DLR feature 8 bits per element. All other electrical parameters remain identical. Selection depends on whether your application requires the full 10-bit data width.

Q: Are 74FCT series parts compatible with 74ACT series?

A: 74FCT162652ATPVCT and CY74FCT162543TPVCT provide equivalent electrical performance and package compatibility. However, both carry Obsolete product status. Use only when Active alternatives are unavailable.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All listed substitute parts are ROHS3 compliant, carry MSL rating of 1 (Unlimited), and maintain identical supply voltage and operating temperature specifications.

Q: Which substitute part has the best inventory availability?

A: 74ACT16861DLR and 74ACT16646DLR both offer 2200 pcs in stock, providing the highest availability among all alternatives.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message