SN74AHCT1G14DBVT Equivalent & Substitute Parts

Part Overview

The SN74AHCT1G14DBVT is a single-channel inverter IC with Schmitt trigger functionality manufactured by Texas Instruments in SOT-23-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device operates within a 4.5V to 5.5V supply voltage range and is suitable for logic signal inversion applications requiring hysteresis characteristics.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	1
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	8mA, 8mA
Max Propagation Delay @ 5V, 50pF	8ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74AHCT1G14DBVT is determined by the following criteria:

Primary Substitution Criteria:

Logic type: Inverter with 1 channel, 1 input
Schmitt trigger functionality
Supply voltage range: 4.5V ~ 5.5V (or wider compatible range)
Output current capability: 8mA minimum for both high and low states
Propagation delay: 8ns or better at 5V, 50pF load
Operating temperature range: -40°C ~ 125°C minimum
Surface mount packaging with compatible pinout
RoHS3 compliance and MSL 1 rating

Packaging Compatibility: Substitutes may use different package variants (SOT-23-5, 5-TSOP, 5-TSSOP, SOT-25) provided the pinout and electrical characteristics remain functionally equivalent.

Manufacturer Availability: Active product status substitutes are prioritized over obsolete alternatives to ensure long-term procurement viability.

Parameter Comparison

Part Number	Manufacturer	Status	Supply Voltage	Quiescent Current (Max)	Output Current (H/L)	Propagation Delay @ 5V, 50pF	Operating Temp	Package	Packaging Type
SN74AHCT1G14DBVT	Texas Instruments	Obsolete	4.5V ~ 5.5V	1 µA	8mA, 8mA	8ns	-40°C ~ 125°C	SOT-23-5	Tape & Reel (TR)
SN74AHCT1G14DBVR	Texas Instruments	Active	4.5V ~ 5.5V	1 µA	8mA, 8mA	8ns	-40°C ~ 125°C	SOT-23-5	Cut Tape (CT) & Digi-Reel®
74AHCT1G14GV,125	Nexperia USA Inc.	Active	4.5V ~ 5.5V	1 µA	8mA, 8mA	8.5ns	-40°C ~ 125°C	SC-74A	Tape & Reel (TR)
74AHCT1G14GW,125	Nexperia USA Inc.	Active	4.5V ~ 5.5V	1 µA	8mA, 8mA	8.5ns	-40°C ~ 125°C	5-TSSOP	Cut Tape (CT) & Digi-Reel®
74AHCT1G14W5-7	Diodes Incorporated	Active	4.5V ~ 5.5V	2 µA	8mA, 8mA	8ns	-40°C ~ 125°C	SOT-25	Tape & Reel (TR)
MC74VHC1G14DTT1G	onsemi	Obsolete	2V ~ 5.5V	1 µA	8mA, 8mA	10.6ns	-55°C ~ 125°C	5-TSOP	Cut Tape (CT) & Digi-Reel®
M74VHC1GT14DTT1G	onsemi	Obsolete	2V ~ 5.5V	1 µA	8mA, 8mA	10.6ns	-55°C ~ 125°C	5-TSOP	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status):

SN74AHCT1G14DBVR is the direct equivalent from Texas Instruments with identical electrical specifications and active product status. This part maintains the same supply voltage range, propagation delay, and output current characteristics as the original SN74AHCT1G14DBVT, with the only difference being packaging format (Cut Tape & Digi-Reel® versus Tape & Reel).

74AHCT1G14GV,125 from Nexperia USA Inc. provides an active alternative with matching 74AHCT series specifications. Propagation delay is marginally higher at 8.5ns versus 8ns, which remains within acceptable tolerance for most applications. This part is available in SC-74A packaging with Tape & Reel format.

74AHCT1G14GW,125 from Nexperia USA Inc. offers the same electrical performance as 74AHCT1G14GV,125 but in 5-TSSOP packaging, suitable for applications requiring smaller form factor or specific PCB layout constraints.

74AHCT1G14W5-7 from Diodes Incorporated maintains full electrical compatibility with a maximum quiescent current of 2 µA (versus 1 µA for other 74AHCT variants). This represents a minor increase in standby power consumption and is acceptable for most applications. Active product status ensures long-term availability.

Secondary Alternatives (Obsolete Status):

MC74VHC1G14DTT1G and M74VHC1GT14DTT1G from onsemi are functionally compatible but operate across a wider supply voltage range (2V ~ 5.5V) and extended temperature range (-55°C ~ 125°C). Propagation delay is 10.6ns at 5V, 50pF, which is slower than the primary part. These parts are classified as obsolete and should be considered only when active alternatives are unavailable.

Compliance Verification:

All listed substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74AHCT1G14DBVR be used as a direct replacement for SN74AHCT1G14DBVT?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, supply voltage range (4.5V ~ 5.5V), propagation delay (8ns @ 5V, 50pF), and output current ratings (8mA). The difference is packaging format: DBVT uses Tape & Reel while DBVR uses Cut Tape & Digi-Reel®. Pinout and functionality are identical.

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

A: The 74AHCT series (Texas Instruments, Nexperia) operates at 4.5V ~ 5.5V supply voltage with 8ns propagation delay. The 74VHC series (onsemi) operates at 2V ~ 5.5V with 10.6ns propagation delay. Both provide Schmitt trigger inversion with 8mA output current. The 74VHC series offers wider voltage compatibility but slower switching speed and obsolete status.

Q: Are packaging differences between SOT-23-5, 5-TSOP, 5-TSSOP, and SOT-25 significant for substitution?

A: Packaging differences affect PCB layout and assembly compatibility but not electrical function. All listed packages are surface mount variants with compatible pinout for this single-channel inverter. Verify PCB footprint compatibility before selecting a substitute with different packaging.

Q: Why is the SN74AHCT1G14DBVT marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives such as SN74AHCT1G14DBVR, 74AHCT1G14GV,125, and 74AHCT1G14GW,125 provide identical or superior specifications with ongoing availability.

Q: Can I use MC74VHC1G14DTT1G or M74VHC1GT14DTT1G in a 4.5V ~ 5.5V application?

A: Yes. Both parts operate within the 4.5V ~ 5.5V range as a subset of their wider 2V ~ 5.5V specification. However, propagation delay is 10.6ns versus 8ns for 74AHCT variants. Verify timing requirements before substitution. Both parts are obsolete; active 74AHCT alternatives are preferred.

Q: What is the significance of quiescent current differences (1 µA versus 2 µA)?

A: Quiescent current represents standby power consumption. The 74AHCT1G14W5-7 specifies 2 µA maximum versus 1 µA for other 74AHCT parts. In battery-powered or low-power applications, this difference may be significant over extended operation periods. For standard applications, this difference is negligible.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, meeting standard environmental and manufacturing requirements.

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