74LCXZ2245MTCX Equivalent & Substitute Parts

Part Overview

The 74LCXZ2245MTCX is a non-inverting transceiver IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. Designed for 3.6V logic applications, this component operates across -40°C to 85°C and is packaged in a 20-TSSOP surface mount configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LCXZ2245MTCX
Manufacturer	onsemi
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	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74LCXZ2245MTCX is determined by the following critical parameters: logic type (non-inverting transceiver), output configuration (3-state), bit width per element (8 bits), package type (20-TSSOP), and electrical compatibility within the specified voltage and current ranges.

The substitute parts are grouped into two categories:

Direct Functional Equivalent: Parts maintaining identical or superior electrical specifications within the 2.7V to 3.6V supply voltage range, matching 24mA output current capability, and preserving the 20-TSSOP package footprint.

Parametric Equivalent with Extended Specifications: Parts offering broader voltage or temperature operating ranges while maintaining core transceiver functionality and package compatibility. These parts may feature reduced element count (1 element vs. 2) but retain 8-bit per element configuration and 3-state output.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage Supply	Temp Range	Package	Status
74LCXZ2245MTCX	onsemi	Transceiver, Non-Inverting	2	8	3-State	24/24	2.7V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Obsolete
74LVC2245APW,118	Nexperia USA Inc.	Transceiver, Non-Inverting	1	8	3-State	12/12	1.2V ~ 3.6V	-40°C ~ 125°C	20-TSSOP	Active
SN74LVCZ245APWR	Texas Instruments	Transceiver, Non-Inverting	1	8	3-State	24/24	2.7V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Active
SN74LVCZ245APWT	Texas Instruments	Transceiver, Non-Inverting	1	8	3-State	24/24	2.7V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Active
NLV74LCX245DTR2G	onsemi	Transceiver, Non-Inverting	1	8	3-State	24/24	2V ~ 5.5V	-55°C ~ 125°C	20-TSSOP	Obsolete

Engineering Selection Recommendations

For Active Product Continuity: The SN74LVCZ245APWR and SN74LVCZ245APWT (Texas Instruments) provide the closest electrical match to the 74LCXZ2245MTCX, maintaining identical supply voltage range (2.7V ~ 3.6V), output current (24mA), and operating temperature (-40°C ~ 85°C). Both parts are currently active and RoHS3 compliant. The primary design consideration is the reduction from 2 elements to 1 element; applications requiring dual independent transceiver channels must implement two devices or evaluate alternative multi-channel solutions.

For Extended Operating Range: The 74LVC2245APW,118 (Nexperia) offers the broadest voltage compatibility (1.2V ~ 3.6V) and extended temperature range (-40°C ~ 125°C), with active product status and RoHS3 compliance. Output current is reduced to 12mA per line, requiring verification against load requirements. This part is suitable for applications with lower current demands and broader environmental specifications.

For Automotive Applications: The NLV74LCX245DTR2G (onsemi) includes AEC-Q100 automotive qualification and operates across 2V ~ 5.5V with -55°C ~ 125°C temperature range. Despite obsolete status, this part may be considered for automotive legacy system support where qualification requirements are mandatory.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC2245APW,118 directly replace the 74LCXZ2245MTCX in all applications?

A: The 74LVC2245APW,118 is electrically compatible within the 2.7V ~ 3.6V operating window and maintains 8-bit transceiver functionality with 3-state output. However, it provides only 1 element versus the original 2 elements, and output current is reduced from 24mA to 12mA. Applications must verify that single-channel operation and 12mA drive capability meet system requirements.

Q: What is the significance of the element count difference?

A: The 74LCXZ2245MTCX contains 2 independent 8-bit transceiver elements, allowing simultaneous bidirectional data transfer on two separate channels. Substitute parts with 1 element support only a single 8-bit channel. Designs requiring dual-channel operation must either implement two substitute devices or select alternative multi-channel transceiver ICs.

Q: Are all substitute parts available in the same 20-TSSOP package?

A: Yes, all listed substitute parts are packaged in 20-TSSOP (0.173", 4.40mm Width) surface mount configuration, ensuring mechanical and footprint compatibility with the original design.

Q: Which substitute offers the best long-term availability?

A: The SN74LVCZ245APWR and SN74LVCZ245APWT (Texas Instruments) and 74LVC2245APW,118 (Nexperia) are all active products with current manufacturing status, providing superior long-term availability compared to the obsolete 74LCXZ2245MTCX.

Q: Is RoHS3 compliance maintained across all substitutes?

A: All active substitute parts (74LVC2245APW,118, SN74LVCZ245APWR, SN74LVCZ245APWT) are RoHS3 compliant. The NLV74LCX245DTR2G is also RoHS3 compliant but carries obsolete status.

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