74VHC32MTC OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74VHC32MTC is a 4-channel 2-input OR gate logic IC manufactured by onsemi in 14-TSSOP surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74VHC32 series provides standard logic gating functionality across industrial and commercial applications with supply voltage range of 2V to 5.5V and operating temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	2V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	8mA, 8mA
Max Propagation Delay @ 5V, 50pF	7.5ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC32MTC is determined by the following criteria:

Direct Electrical Compatibility Requirements:

Logic Type: OR Gate (4 channel, 2 input)
Voltage Supply Range: 2V ~ 5.5V minimum
Current Output Capability: 8mA minimum (both high and low)
Propagation Delay: 7.5ns maximum @ 5V, 50pF
Quiescent Current: 2 µA maximum

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount
Package options: 14-TSSOP, 14-SSOP, or 14-TVSOP (all 0.173" to 0.209" width range)

Compliance Requirements:

RoHS3 Compliant
MSL Rating: 1 (Unlimited)

Substitute parts are categorized as Direct (identical electrical and package specifications), Upgrade (enhanced operating temperature or automotive qualification), or Similar (alternative package form factors with identical electrical performance).

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Operating Temp	Package	Status	Inventory
74VHC32MTC	onsemi	74VHC	2V ~ 5.5V	-40°C ~ 85°C	14-TSSOP	Obsolete	1400 Pcs
SN74AHC32PWR	Texas Instruments	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	3892 Pcs
74AHC32PW,118	Nexperia USA Inc.	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	2060 Pcs
74VHC32PW,118	Nexperia USA Inc.	74VHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	1085 Pcs
SN74AHC32MPWREP	Texas Instruments	74AHC	2V ~ 5.5V	-55°C ~ 125°C	14-TSSOP	Active	862 Pcs
SN74AHC32QPWRG4Q1	Texas Instruments	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	4036 Pcs
SN74AHC32QPWRQ1	Texas Instruments	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	2306 Pcs
74AHC32PW-Q100J	Nexperia USA Inc.	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TSSOP	Active	3177 Pcs
SN74AHC32DBR	Texas Instruments	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-SSOP	Active	2320 Pcs
SN74AHC32DGVR	Texas Instruments	74AHC	2V ~ 5.5V	-40°C ~ 125°C	14-TVSOP	Active	4685 Pcs

Engineering Selection Recommendations

Direct Replacement (14-TSSOP Package, Active Status):

SN74AHC32PWR and 74AHC32PW,118 provide direct electrical and mechanical compatibility with the 74VHC32MTC. Both parts maintain the 14-TSSOP package form factor and meet all electrical specifications. SN74AHC32PWR offers extended operating temperature range (-40°C to 125°C) compared to the original part (-40°C to 85°C), providing enhanced thermal margin. 74AHC32PW,118 from Nexperia provides equivalent performance with active product status and established supply chain availability.

Automotive-Grade Options:

SN74AHC32QPWRG4Q1 and SN74AHC32QPWRQ1 are AEC-Q100 qualified automotive-grade variants with identical electrical specifications and 14-TSSOP packaging. These parts are suitable for applications requiring automotive qualification or extended reliability assurance. SN74AHC32QPWRG4Q1 provides the highest inventory availability (4036 Pcs).

Extended Temperature Range:

SN74AHC32MPWREP extends the operating temperature range to -55°C to 125°C, accommodating applications requiring operation below -40°C. This part maintains 14-TSSOP packaging and all electrical specifications.

Alternative Package Options:

SN74AHC32DBR (14-SSOP, 0.209" width) and SN74AHC32DGVR (14-TVSOP) provide functionally equivalent alternatives for applications where package footprint variation is acceptable. Both maintain identical electrical performance and active product status.

Frequently Asked Questions (FAQ)

Q: Can I use 74AHC series parts as direct replacements for 74VHC32MTC?

A: Yes. The 74AHC and 74VHC series share identical electrical specifications for this logic gate function: 4-channel 2-input OR gate, 2V to 5.5V supply, 7.5ns propagation delay, and 8mA output current. Both series are ROHS3 compliant with MSL-1 rating. The primary difference is that 74AHC variants offer extended operating temperature range (-40°C to 125°C versus -40°C to 85°C).

Q: What is the difference between 14-TSSOP, 14-SSOP, and 14-TVSOP packages?

A: All three are 14-pin surface mount packages with similar pin pitch and functionality. 14-TSSOP (thin shrink small outline package) measures 0.173" width, 14-SSOP (shrink small outline package) measures 0.209" width, and 14-TVSOP (thin very small outline package) measures 0.173" width. Package selection depends on PCB layout constraints and available footprint space. Electrical performance is identical across all three package types.

Q: Are automotive-qualified parts (AEC-Q100) necessary for my application?

A: AEC-Q100 qualification is required only for automotive applications or systems requiring automotive-grade reliability assurance. SN74AHC32QPWRG4Q1 and SN74AHC32QPWRQ1 carry this qualification. For industrial or commercial applications, standard-grade parts such as SN74AHC32PWR or 74AHC32PW,118 are appropriate.

Q: What is the inventory status for each substitute part?

A: SN74AHC32DGVR has the highest availability (4685 Pcs), followed by SN74AHC32QPWRG4Q1 (4036 Pcs) and SN74AHC32PWR (3892 Pcs). 74AHC32PW-Q100J provides 3177 Pcs, SN74AHC32DBR provides 2320 Pcs, and SN74AHC32QPWRQ1 provides 2306 Pcs. 74AHC32PW,118 offers 2060 Pcs, and SN74AHC32MPWREP has the lowest availability at 862 Pcs.

Q: Can I mix different manufacturers (Texas Instruments, Nexperia, onsemi) in the same design?

A: Yes. All substitute parts meet identical electrical specifications and ROHS3 compliance. Mixing manufacturers is acceptable from an electrical and regulatory standpoint. However, verify that your supply chain and quality assurance processes accommodate multiple sources if required by your procurement standards.

Q: What is the significance of the extended temperature range in SN74AHC32MPWREP (-55°C to 125°C)?

A: The extended lower temperature limit (-55°C versus -40°C) accommodates applications operating in extreme cold environments or high-altitude conditions. The extended upper limit (125°C versus 85°C) provides thermal margin in high-temperature applications. Select this part only if your application requires operation outside the standard -40°C to 85°C range.

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