74VHCT08AMTC AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74VHCT08AMTC is a 4-channel 2-input AND gate logic IC manufactured by onsemi in 14-TSSOP surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74VHCT08 series provides standard AND gate functionality with CMOS technology suitable for general-purpose logic applications requiring 4.5V to 5.5V supply voltage operation.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	8mA / 8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay	7.9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74VHCT08AMTC is determined by strict equivalence in the following parameters:

Logic function: 4-channel 2-input AND gate
Package type: 14-TSSOP surface mount
Supply voltage range: 4.5V ~ 5.5V
Input/output logic levels: 0.8V (low), 2V (high)
Output current capability: 8mA high and low
Quiescent current: 2 µA maximum
Propagation delay: 7.9ns @ 5V, 50pF maximum
Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts are grouped into three categories:

Direct Equivalents: Parts with identical electrical specifications and 14-TSSOP packaging from alternative manufacturers (74VHCT08AMTCX from Fairchild Semiconductor).

Compatible Upgrades: Parts from the 74AHCT08 series that maintain all critical electrical parameters while offering active product status and extended operating temperature range (-40°C ~ 125°C). These include SN74AHCT08PW, SN74AHCT08PWR, 74AHCT08PW,118, and 74VHCT08PW,118.

Automotive-Grade Upgrades: AEC-Q100 qualified parts (74VHCT08PW-Q100J, SN74AHCT08QPWRG4Q1, SN74AHCT08QPWRQ1, 74AHCT08PW-Q100J) meeting automotive reliability standards while maintaining electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Status	Voltage Supply	Quiescent Current	Propagation Delay	Temp Range	Package	RoHS
74VHCT08AMTC	onsemi	74VHCT	Obsolete	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 85°C	14-TSSOP	N/A
74VHCT08AMTCX	Fairchild Semiconductor	74VHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 85°C	14-TSSOP	N/A
SN74AHCT08PW	Texas Instruments	74AHCT	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
SN74AHCT08PWR	Texas Instruments	74AHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
74AHCT08PW,118	Nexperia USA Inc.	74AHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
74VHCT08PW,118	Nexperia USA Inc.	74VHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
74VHCT08PW-Q100J	Nexperia USA Inc.	74VHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
SN74AHCT08QPWRG4Q1	Texas Instruments	74AHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
SN74AHCT08QPWRQ1	Texas Instruments	74AHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
74AHCT08PW-Q100J	Nexperia USA Inc.	74AHCT	Active	4.5V ~ 5.5V	2 µA	7.9ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant
74AHCT08T14-13	Diodes Incorporated	74AHCT	Active	4.5V ~ 5.5V	20 µA	10ns	-40°C ~ 125°C	14-TSSOP	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): 74VHCT08AMTCX from Fairchild Semiconductor is the direct equivalent, maintaining all electrical parameters and operating temperature range of the original 74VHCT08AMTC.

For Active Product Status with Extended Temperature Range: SN74AHCT08PWR (Texas Instruments) and 74AHCT08PW,118 (Nexperia USA Inc.) are active products offering identical electrical performance with extended operating temperature to -40°C ~ 125°C and ROHS3 compliance. These are suitable for applications where long-term availability and compliance certification are required.

For Automotive Applications: 74VHCT08PW-Q100J (Nexperia USA Inc.), SN74AHCT08QPWRG4Q1, and SN74AHCT08QPWRQ1 (Texas Instruments) are AEC-Q100 qualified alternatives for automotive-grade designs. These maintain full electrical compatibility while meeting automotive reliability and qualification standards.

For Cost-Optimized Selection: 74AHCT08T14-13 (Diodes Incorporated) is an active alternative; however, quiescent current is specified at 20 µA maximum and propagation delay at 10ns, which differ from the original specification. This part is suitable only where these parameter variations are acceptable within system design margins.

Frequently Asked Questions (FAQ)

Q: Can I use 74AHCT08 series parts as direct replacements for 74VHCT08AMTC?

A: Yes. The 74AHCT08 series maintains all critical electrical parameters: 4-channel 2-input AND gate function, 4.5V ~ 5.5V supply voltage, 2 µA quiescent current, 7.9ns propagation delay, and 14-TSSOP packaging. The 74AHCT series offers the advantage of active product status and extended operating temperature range (-40°C ~ 125°C).

Q: What is the difference between 74VHCT and 74AHCT series?

A: Both series provide identical logic function and electrical performance in 14-TSSOP packaging. The primary difference is product lifecycle status: 74VHCT08AMTC is obsolete, while 74AHCT08 variants are active. The 74AHCT series also offers extended temperature range support (-40°C ~ 125°C vs. -40°C ~ 85°C).

Q: Are automotive-grade parts (AEC-Q100) compatible with standard industrial applications?

A: Yes. AEC-Q100 qualified parts (74VHCT08PW-Q100J, SN74AHCT08QPWRG4Q1, SN74AHCT08QPWRQ1) meet automotive reliability standards and are fully compatible with standard industrial applications. They provide enhanced reliability margins at no functional cost.

Q: Why does 74AHCT08T14-13 show different quiescent current and propagation delay specifications?

A: The 74AHCT08T14-13 from Diodes Incorporated specifies 20 µA quiescent current (vs. 2 µA) and 10ns propagation delay (vs. 7.9ns). These variations remain within acceptable logic IC tolerances but should be evaluated against specific system power consumption and timing requirements before selection.

Q: What packaging options are available for these substitutes?

A: All substitute parts listed are available in 14-TSSOP surface mount packaging (0.173", 4.40mm width), matching the original 74VHCT08AMTC package. Packaging variants (Tape & Reel, Cut Tape, Tube) differ by supplier but do not affect electrical compatibility.

Q: Are these parts RoHS compliant?

A: The original 74VHCT08AMTC does not specify RoHS status. All active substitute parts listed (SN74AHCT08PW, SN74AHCT08PWR, 74AHCT08PW,118, 74VHCT08PW,118, 74VHCT08PW-Q100J, SN74AHCT08QPWRG4Q1, SN74AHCT08QPWRQ1, 74AHCT08PW-Q100J, 74AHCT08T14-13) are ROHS3 compliant.

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