PI74VCX16245A Equivalent & Substitute Parts

Part Overview

The PI74VCX16245A is a non-inverting bus transceiver manufactured by Diodes Incorporated, featuring 2 elements with 8 bits per element and 3-state output capability. Designed for 1.8V to 3.6V supply operation, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent active alternatives is essential for design continuity and procurement reliability.

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	1.8V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the PI74VCX16245A is determined by the following critical parameters:

Logic Configuration: Transceiver, Non-Inverting with 2 elements and 8 bits per element
Output Capability: 3-State output with 24mA drive current (both high and low)
Supply Voltage Range: Must support operation within 1.8V to 3.6V envelope
Package Compatibility: 48-TFSOP surface mount package (0.240", 6.10mm width)
Thermal Operating Range: -40°C to 85°C minimum requirement

Substitute parts are grouped by their ability to meet these core electrical and mechanical specifications. Parts with extended voltage ranges (lower minimum) or broader temperature ranges provide enhanced operational flexibility. Active product status indicates ongoing manufacturer support and availability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Voltage - Supply	Operating Temperature	Product Status	Package / Case	RoHS Status
PI74VCX16245A	Diodes Incorporated	74VCX	1.8V ~ 3.6V	-40°C ~ 85°C	Obsolete	48-TFSOP (0.240", 6.10mm)	RoHS non-compliant
SN74LVCH16245ADGGR	Texas Instruments	74LVCH	1.65V ~ 3.6V	-40°C ~ 125°C	Active	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
74ALVC16245MTDX	Fairchild Semiconductor	74ALVC	1.65V ~ 3.6V	-40°C ~ 85°C	Active	48-TFSOP (0.240", 6.10mm)	Not specified
74ALVC16245PAG	Renesas Electronics Corporation	74ALVC	2.7V ~ 3.6V	-40°C ~ 85°C	Obsolete	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
74ALVC16245PAG8	Renesas Electronics Corporation	74ALVC	2.7V ~ 3.6V	-40°C ~ 85°C	Obsolete	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
74ALVCH16245PAG	Renesas Electronics Corporation	74ALVCH	2.7V ~ 3.6V	-40°C ~ 85°C	Obsolete	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
74VCX16245MTDX	Fairchild Semiconductor	74VCX	1.2V ~ 3.6V	-40°C ~ 85°C	Active	48-TFSOP (0.240", 6.10mm)	Not specified
SN74ALVCH16245DGG	Texas Instruments	74ALVCH	1.65V ~ 3.6V	-40°C ~ 85°C	Active	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
SN74ALVCH16245DGGR	Texas Instruments	74ALVCH	1.65V ~ 3.6V	-40°C ~ 85°C	Active	48-TFSOP (0.240", 6.10mm)	ROHS3 Compliant
SN74ALVCH16245DGVR	Texas Instruments	74ALVCH	1.65V ~ 3.6V	-40°C ~ 85°C	Active	48-TFSOP (0.173", 4.40mm)	ROHS3 Compliant
SN74ALVCH16245DL	Texas Instruments	74ALVCH	1.65V ~ 3.6V	-40°C ~ 85°C	Active	48-BSSOP (0.295", 7.50mm)	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

SN74LVCH16245ADGGR (Texas Instruments) and SN74ALVCH16245DGGR (Texas Instruments) are the preferred substitutes. Both are active products with ROHS3 compliance, extended operating temperature range (-40°C to 125°C for LVCH variant), and identical 48-TFSOP packaging. These parts maintain full electrical compatibility with the PI74VCX16245A while offering improved product lifecycle support.

Alternative with Extended Voltage Range:

74VCX16245MTDX (Fairchild Semiconductor) operates across 1.2V to 3.6V, providing the widest supply voltage envelope. This part remains active and maintains the same package footprint, making it suitable for applications requiring lower voltage operation.

Package Variant Consideration:

SN74ALVCH16245DGVR uses a narrower 48-TVSOP package (0.173", 4.40mm width) instead of the standard 48-TFSOP. This variant is appropriate only if PCB layout accommodates the reduced package width.

Obsolete Part Alternatives:

74ALVC16245PAG, 74ALVC16245PAG8, and 74ALVCH16245PAG are obsolete but remain in stock. These are suitable only for legacy system maintenance where active product sourcing is not feasible. All three are ROHS3 compliant with 2.7V to 3.6V supply range.

Frequently Asked Questions (FAQ)

Q: Can SN74LVCH16245ADGGR directly replace PI74VCX16245A without circuit modification?

A: Yes. Both parts share identical logic configuration (2-element, 8-bit non-inverting transceiver), 3-state output, 24mA drive current, and 48-TFSOP package. The SN74LVCH16245ADGGR operates across 1.65V to 3.6V, which encompasses the PI74VCX16245A's 1.8V to 3.6V range. No circuit changes are required.

Q: What is the difference between 74ALVC16245PAG and 74ALVC16245PAG8?

A: Both parts are electrically identical with 2.7V to 3.6V supply range and -40°C to 85°C operating temperature. The primary difference is packaging: PAG is supplied in Tube, while PAG8 is supplied in Cut Tape (CT). Selection depends on procurement and assembly requirements.

Q: Why does SN74ALVCH16245DGVR have a different package width?

A: SN74ALVCH16245DGVR uses 48-TVSOP (0.173", 4.40mm width) versus the standard 48-TFSOP (0.240", 6.10mm width). This narrower package is a space-optimized variant. It is electrically equivalent but requires PCB layout verification to confirm footprint compatibility.

Q: Is RoHS compliance a substitution requirement?

A: RoHS compliance is not a functional substitution criterion but indicates regulatory alignment with modern manufacturing standards. The PI74VCX16245A is RoHS non-compliant. ROHS3-compliant alternatives (SN74LVCH16245ADGGR, SN74ALVCH16245DGGR, SN74ALVCH16245DL) are recommended for new designs and regulated applications.

Q: Can 74VCX16245MTDX be used in applications requiring 1.8V minimum supply?

A: No. The 74VCX16245MTDX operates from 1.2V minimum, which is lower than the PI74VCX16245A's 1.8V minimum. While this part is compatible with 1.8V operation, applications specifically requiring 1.8V as the absolute minimum should use SN74LVCH16245ADGGR or SN74ALVCH16245DGGR to maintain the original voltage specification.

Q: What is the inventory status for active substitutes?

A: SN74LVCH16245ADGGR has 2,635 units in stock. SN74ALVCH16245DGGR has 3,993 units in stock. SN74ALVCH16245DL has 1,900 units in stock. 74VCX16245MTDX has 5,041 units in stock. All active alternatives maintain adequate inventory for procurement.

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