PI74VCX16240AE Equivalent & Substitute Parts

Part Overview

The PI74VCX16240AE is a 4-element, 4-bit inverting buffer with 3-state output, manufactured by Diodes Incorporated in the 74VCX logic series. This component operates across a 1.8V to 3.6V supply voltage range and is housed in a 48-TFSOP package. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence while offering active product status and improved availability.

Key Parameters

Parameter	Value
Logic Type	Buffer, Inverting
Number of Elements	4
Number of Bits per Element	4
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74VCX16240AE is determined by strict equivalence across the following critical parameters:

Logic configuration: 4-element, 4-bit inverting buffer with 3-state output
Output drive capability: 24mA high and low
Supply voltage range: Minimum 1.65V to 3.6V (substitute parts support extended lower voltage)
Operating temperature range: -40°C to 85°C
Package form factor: 48-pin TFSOP or compatible 48-pin SSOP
Surface mount technology
RoHS3 compliance and MSL Level 1

Two substitute categories are identified:

Direct Functional Equivalents (48-TFSOP): SN74LVCH16240ADGGR and SN74ALVCH16240DGGR maintain identical package geometry and pinout.

Package Variant (48-SSOP): SN74ALVCH16240DL provides functional equivalence with a wider package footprint (0.295" vs 0.240"), suitable for applications where PCB layout permits the larger form factor.

Parameter Comparison

Parameter	PI74VCX16240AE	SN74LVCH16240ADGGR	SN74ALVCH16240DGGR	SN74ALVCH16240DL
Manufacturer	Diodes Incorporated	Texas Instruments	Texas Instruments	Texas Instruments
Series	74VCX	74LVCH	74ALVCH	74ALVCH
Product Status	Obsolete	Active	Active	Active
Logic Type	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting
Number of Elements	4	4	4	4
Number of Bits per Element	4	4	4	4
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.8V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	48-TFSOP (0.240", 6.10mm Width)	48-TFSOP (0.240", 6.10mm Width)	48-TFSOP (0.240", 6.10mm Width)	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	-	Tape & Reel (TR)	Tape & Reel (TR)	Tube

Engineering Selection Recommendations

All substitute parts are active products from Texas Instruments with full RoHS3 compliance and MSL Level 1 certification, ensuring regulatory compliance and handling compatibility with the original PI74VCX16240AE.

SN74LVCH16240ADGGR is the primary direct substitute, offering identical 48-TFSOP package geometry with 3200 units in stock. This part maintains pinout compatibility and requires no PCB layout modifications.

SN74ALVCH16240DGGR is the manufacturer-recommended alternative, also in 48-TFSOP package with 813 units available. Both Texas Instruments parts support extended lower supply voltage (1.65V minimum vs 1.8V), providing enhanced compatibility with low-voltage applications.

SN74ALVCH16240DL provides functional equivalence in a wider 48-BSSOP package (0.295" width). This variant is suitable only for designs where PCB footprint accommodates the larger package dimensions. Tube packaging is available with 1089 units in stock.

All three substitutes maintain identical electrical performance: 4-element, 4-bit inverting buffer configuration, 24mA output drive, 3-state output control, and -40°C to 85°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can SN74LVCH16240ADGGR directly replace PI74VCX16240AE on existing PCBs?

A: Yes. Both parts use the 48-TFSOP package with identical pinout and footprint. No PCB modifications are required. The SN74LVCH16240ADGGR is a direct pin-for-pin substitute.

Q: What is the difference between SN74LVCH16240ADGGR and SN74ALVCH16240DGGR?

A: Both are 48-TFSOP packages with identical electrical specifications and pinout. The primary difference is series designation (74LVCH vs 74ALVCH) and manufacturer inventory levels. Both are active products suitable for new designs.

Q: Can SN74ALVCH16240DL be used as a substitute?

A: SN74ALVCH16240DL provides functional equivalence but uses a 48-BSSOP package (0.295" width) instead of 48-TFSOP (0.240" width). PCB layout must accommodate the wider package footprint. Pinout remains compatible.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All three substitute parts are ROHS3 compliant with MSL Level 1 certification, matching the original PI74VCX16240AE compliance status.

Q: What is the minimum supply voltage for substitute parts?

A: Substitute parts support 1.65V to 3.6V, compared to the original part's 1.8V to 3.6V. This extended lower voltage range provides additional design flexibility.

Q: Which substitute has the highest inventory availability?

A: SN74LVCH16240ADGGR has 3200 units in stock, providing the highest availability among all substitutes.

Q: Do packaging differences affect electrical performance?

A: No. All substitutes maintain identical electrical specifications regardless of package form factor. Package selection is determined by PCB layout requirements only.

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