74ACTQ16543MTDX Equivalent & Substitute Parts

Part Overview

The 74ACTQ16543MTDX is a non-inverting transceiver IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. This device 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 equivalent and substitute parts necessary for ongoing design support and procurement continuity.

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)
Mounting Type	Surface Mount
Package / Case	56-TFSOP (0.240", 6.10mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 74ACTQ16543MTDX are grouped based on strict electrical and mechanical compatibility. All substitute candidates maintain identical specifications across the following critical parameters:

Logic type: Transceiver, Non-Inverting
Element and bit configuration: 2 elements, 8 bits per element
Output type: 3-State
Output current: 24mA (high and low)
Supply voltage range: 4.5V ~ 5.5V
Operating temperature range: -40°C ~ 85°C
Mounting type: Surface Mount
Moisture sensitivity level: 1 (Unlimited)

Substitutes are differentiated by package type (56-TSSOP vs. 56-SSOP), manufacturer, product status, and packaging format (tube, tape & reel, or bulk). Package compatibility must be verified against PCB layout requirements.

Parameter Comparison

Part Number	Manufacturer	Package / Case	Supplier Device Package	Product Status	Packaging Format	Inventory (Pcs)
74ACTQ16543MTDX	onsemi	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP	Obsolete	-	922
74ACT16543DL	Texas Instruments	56-BSSOP (0.295", 7.50mm Width)	56-SSOP	Last Time Buy	Tube	1332
74ACT16543DLR	Texas Instruments	56-BSSOP (0.295", 7.50mm Width)	56-SSOP	Active	Tape & Reel (TR)	1871
74ACT16543DGGR	Texas Instruments	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP	Active	Tape & Reel (TR)	2138
74FCT162543ATPACT	Texas Instruments	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP	Obsolete	Cut Tape (CT) & Digi-Reel®	1045
74FCT162646CTPACT	Cypress Semiconductor Corp	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP	Active	Bulk	6939
74FCT162652CTPACT	Texas Instruments	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP	Obsolete	Cut Tape (CT) & Digi-Reel®	898

Engineering Selection Recommendations

For new designs and long-term procurement, 74ACT16543DGGR (Texas Instruments, Active status) is the primary equivalent, offering identical 56-TSSOP packaging and active product status with RoHS3 compliance. This part provides the most direct replacement with current manufacturer support.

For applications where 56-SSOP package compatibility exists, 74ACT16543DLR (Texas Instruments, Active status) offers an alternative with RoHS3 compliance and tape & reel packaging suitable for automated assembly.

Parts with obsolete status (74ACTQ16543MTDX, 74FCT162543ATPACT, 74FCT162652CTPACT) should be transitioned to active alternatives. The 74FCT162646CTPACT (Cypress Semiconductor Corp, Active status) maintains 56-TSSOP packaging and offers continued availability.

All recommended substitutes maintain REACH unaffected status and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16543DL be used as a direct replacement for 74ACTQ16543MTDX?

A: Electrical parameters are identical, but the package differs. 74ACT16543DL uses 56-BSSOP (0.295", 7.50mm width) versus the original 56-TFSOP (0.240", 6.10mm width). PCB layout compatibility must be confirmed before substitution.

Q: What is the difference between 74ACT16543DL and 74ACT16543DLR?

A: Both use identical 56-BSSOP packaging and electrical specifications. The primary difference is packaging format: DL is supplied in tubes, while DLR is supplied in tape & reel. 74ACT16543DLR has active product status versus last time buy for DL.

Q: Why is 74ACT16543DGGR recommended over other substitutes?

A: 74ACT16543DGGR maintains the original 56-TSSOP package footprint, eliminating PCB layout modifications. It carries active product status with RoHS3 compliance and current manufacturer support from Texas Instruments.

Q: Are all substitute parts RoHS compliant?

A: 74ACT16543DL, 74ACT16543DLR, 74ACT16543DGGR, 74FCT162543ATPACT, and 74FCT162652CTPACT are RoHS3 compliant. 74FCT162646CTPACT RoHS status is not specified in available data.

Q: What packaging formats are available for the recommended substitutes?

A: 74ACT16543DGGR is available in tape & reel format. 74ACT16543DL is available in tube format. 74FCT162646CTPACT is available in bulk format. Selection depends on assembly process requirements and order quantities.

Q: Do all substitutes maintain the same moisture sensitivity level?

A: Yes. All substitute parts maintain MSL 1 (Unlimited) classification, matching the original 74ACTQ16543MTDX specification.

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