74FCT162H543CTPACT Equivalent & Substitute Parts

Part Overview

The 74FCT162H543CTPACT is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 2 elements with 8 bits per element and 3-state output capability. Designed for 56-TSSOP surface mount packaging, this component operates across a 4.5V to 5.5V supply voltage range with output drive capability of 24mA for both high and low states.

The 74FCT162H543CTPACT carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this transceiver architecture.

Key Parameters

Parameter	Value
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74FCT162H543CTPACT 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 meet these electrical and mechanical specifications. Variations in product status, packaging format, and manufacturer do not affect functional interchangeability within the defined parameter set.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	RoHS
74FCT162H543CTPACT	Texas Instruments	74FCT	Obsolete	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5V ~ 5.5V	-40°C ~ 85°C	56-TFSOP	ROHS3
74ACT16543DGGR	Texas Instruments	74ACT	Active	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5V ~ 5.5V	-40°C ~ 85°C	56-TFSOP	ROHS3
74FCT162543ATPACT	Texas Instruments	74FCT	Obsolete	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5V ~ 5.5V	-40°C ~ 85°C	56-TFSOP	ROHS3
74FCT162646CTPACT	Cypress Semiconductor Corp	74FCT	Active	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5V ~ 5.5V	-40°C ~ 85°C	56-TFSOP	Not specified
74FCT162652CTPACT	Texas Instruments	74FCT	Obsolete	Transceiver, Non-Inverting	2	8	3-State	24, 24	4.5V ~ 5.5V	-40°C ~ 85°C	56-TFSOP	ROHS3

Engineering Selection Recommendations

74ACT16543DGGR is the primary recommended substitute. This part maintains active product status with Texas Instruments, ensuring ongoing manufacturer support and supply chain availability. It carries ROHS3 compliance identical to the original part and is available in Tape & Reel packaging format suitable for automated assembly processes.

74FCT162646CTPACT offers an alternative from Cypress Semiconductor Corp with active product status. This part meets all electrical and mechanical specifications and provides robust inventory availability. Selection of this part should account for supply chain qualification requirements specific to the Cypress manufacturer designation.

74FCT162543ATPACT and 74FCT162652CTPACT are functionally equivalent alternatives within the 74FCT series. Both maintain ROHS3 compliance and identical electrical parameters. These parts carry obsolete status, limiting their suitability for new long-term supply chain planning despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16543DGGR directly replace 74FCT162H543CTPACT in existing designs?

A: Yes. Both parts share identical electrical specifications (2 elements, 8 bits per element, 3-state output, 24mA drive capability, 4.5V–5.5V supply, -40°C to 85°C operating range) and the same 56-TFSOP package footprint. The primary difference is series designation (74ACT versus 74FCT) and active versus obsolete product status.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active status indicates ongoing manufacturer support, continued production, and long-term supply availability. Obsolete status signals end-of-life designation, with no guarantee of future availability. For new designs or long-term production commitments, active parts are preferred.

Q: Are there packaging format differences among the substitute parts?

A: Yes. The main part (74FCT162H543CTPACT) is supplied in Cut Tape (CT) & Digi-Reel format. The 74ACT16543DGGR is available in Tape & Reel (TR) format. The 74FCT162646CTPACT is supplied in Bulk format. All three packaging formats are compatible with standard surface mount assembly processes; selection depends on production volume and handling requirements.

Q: Do all substitute parts meet RoHS compliance requirements?

A: The 74ACT16543DGGR, 74FCT162543ATPACT, and 74FCT162652CTPACT are ROHS3 compliant. The 74FCT162646CTPACT does not specify RoHS status in available documentation. Compliance verification with the Cypress manufacturer is recommended for applications with mandatory RoHS requirements.

Q: What is the Moisture Sensitivity Level (MSL) for substitute parts?

A: The 74ACT16543DGGR, 74FCT162543ATPACT, and 74FCT162652CTPACT all carry MSL 1 (Unlimited), matching the original part. The 74FCT162646CTPACT does not specify MSL in available documentation. MSL 1 indicates no moisture sensitivity restrictions during storage and handling.

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