PI74VCX16245AE Equivalent & Substitute Parts

Part Overview

The PI74VCX16245AE is a non-inverting bus transceiver manufactured by Diodes Incorporated, featuring 2 elements with 8 bits per element and 3-state output capability in a 48-TSSOP package. This component operates across a supply voltage range of 1.8V to 3.6V with output drive capability of 24mA for both high and low states. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74VCX16245AE
Manufacturer	Diodes Incorporated
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	1.8V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PI74VCX16245AE is determined by strict alignment of the following critical parameters:

Core Functional 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
Operating Temperature: -40°C ~ 85°C (TA)

Electrical Compatibility Parameters:

Voltage - Supply: Must support the 1.8V to 3.6V range or a subset thereof that includes the operating voltage of the original design
Output Drive Capability: 24mA minimum for both high and low states

Physical Compatibility Parameters:

Package / Case: 48-TFSOP (0.240", 6.10mm Width) for direct pin-compatible substitution, or alternative packages with equivalent pinout

Substitute parts are grouped based on whether they meet all core functional parameters and maintain electrical compatibility within the specified voltage and current ranges. Parts with extended voltage ranges (lower minimum supply voltage) or active product status are noted as preferred alternatives to obsolete originals.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	I(out) High/Low (mA)	Supply Voltage (V)	Temp Range (°C)	Package	Product Status
PI74VCX16245AE	Diodes Inc.	Non-Inverting	2	8	3-State	24/24	1.8–3.6	-40 to 85	48-TFSOP	Obsolete
74ALVC16245MTDX	Fairchild Semi.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-TFSOP	Active
74ALVC16245PAG	Renesas Elec.	Non-Inverting	2	8	3-State	24/24	2.7–3.6	-40 to 85	48-TFSOP	Obsolete
74ALVC16245PAG8	Renesas Elec.	Non-Inverting	2	8	3-State	24/24	2.7–3.6	-40 to 85	48-TFSOP	Obsolete
74ALVCH16245PAG	Renesas Elec.	Non-Inverting	2	8	3-State	24/24	2.7–3.6	-40 to 85	48-TFSOP	Obsolete
74VCX16245MTDX	Fairchild Semi.	Non-Inverting	2	8	3-State	24/24	1.2–3.6	-40 to 85	48-TFSOP	Active
SN74ALVCH16245DGG	Texas Instr.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-TFSOP	Active
SN74ALVCH16245DGGR	Texas Instr.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-TFSOP	Active
SN74ALVCH16245DGVR	Texas Instr.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-TVSOP	Active
SN74ALVCH16245DL	Texas Instr.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-BSSOP	Active
SN74ALVCH16245DLR	Texas Instr.	Non-Inverting	2	8	3-State	24/24	1.65–3.6	-40 to 85	48-BSSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Direct Package Match):

The 74ALVC16245MTDX (Fairchild Semiconductor) and 74VCX16245MTDX (Fairchild Semiconductor) are the preferred substitutes for the PI74VCX16245AE. Both are active products in the 48-TFSOP package with identical pinout and functional specifications. The 74ALVC16245MTDX operates at 1.65V–3.6V supply voltage, providing extended low-voltage capability compared to the original 1.8V minimum. The 74VCX16245MTDX extends the lower supply limit to 1.2V, offering maximum flexibility for low-voltage applications.

Secondary Substitutes (Active Status, Alternative Packages):

The SN74ALVCH16245 series from Texas Instruments (DGG, DGGR, DL, DLR variants) are active products with identical functional specifications and 1.65V–3.6V supply voltage range. The DGGR and DGG variants maintain the 48-TFSOP package for direct substitution. The DGVR variant uses a 48-TVSOP package (0.173" width versus 0.240" width), requiring PCB layout verification before substitution. The DL and DLR variants use 48-BSSOP packaging (0.295" width), also requiring layout confirmation.

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, matching the original part's environmental specifications. The PI74VCX16245AE's obsolete status makes transition to active alternatives necessary for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the PI74VCX16245AE with any of the listed alternatives?

A: Direct substitution is possible only with parts maintaining identical package dimensions and pinout. The 74ALVC16245MTDX, 74VCX16245MTDX, SN74ALVCH16245DGG, and SN74ALVCH16245DGGR are pin-compatible in the 48-TFSOP package. Alternative packages (TVSOP, BSSOP) require PCB layout verification.

Q: What is the key difference between the 74ALVC16245MTDX and 74VCX16245MTDX?

A: Both are functionally equivalent non-inverting transceivers with identical output drive (24mA) and operating temperature range. The primary difference is supply voltage range: 74ALVC16245MTDX operates at 1.65V–3.6V, while 74VCX16245MTDX operates at 1.2V–3.6V. Select based on your circuit's minimum supply voltage requirement.

Q: Why do some substitutes have different package codes (TVSOP, BSSOP) compared to the original TFSOP?

A: Different package codes indicate variations in physical dimensions and lead spacing. While functional specifications remain identical, alternative packages require verification that PCB footprints and thermal characteristics are compatible with your design before implementation.

Q: Are all listed substitutes ROHS3 compliant?

A: All active substitute parts listed (Fairchild and Texas Instruments variants) are ROHS3 compliant. The obsolete Renesas parts (74ALVC16245PAG, 74ALVC16245PAG8, 74ALVCH16245PAG) are also ROHS3 compliant but are no longer in active production.

Q: What should I consider when transitioning from the obsolete PI74VCX16245AE?

A: Verify supply voltage compatibility with your circuit design. If your design operates at 1.8V minimum, the 74ALVC16245MTDX or SN74ALVCH16245 series are suitable. If lower voltage operation (1.2V–1.65V) is required, select the 74VCX16245MTDX. Confirm package footprint compatibility with your PCB layout before finalizing procurement.

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