74AHC05T14-13 Equivalent & Substitute Parts

Part Overview

The 74AHC05T14-13 is a 6-channel inverter logic IC manufactured by Diodes Incorporated in a 14-TSSOP surface mount package. This open drain inverter operates across a 2V to 5.5V supply voltage range with a maximum propagation delay of 7.5ns at 5V with 50pF load. The device is active in production status and ROHS3 compliant, making it suitable for modern digital logic applications requiring inversion functionality with open drain output configuration. Alternative equivalent parts may be required due to inventory constraints, regional availability, or specific application requirements for enhanced features such as Schmitt trigger input characteristics or automotive qualification.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Open Drain
Voltage - Supply	2V ~ 5.5V
Current - Quiescent (Max)	20 µA
Current - Output High, Low	-, 8mA
Max Propagation Delay @ V, Max CL	7.5ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74AHC05T14-13 is determined by the following critical parameters: logic type (inverter), circuit count (6 channels), input configuration (1 input per channel), package type (14-TSSOP), supply voltage range (2V ~ 5.5V minimum), output current capability (8mA minimum for low output), and operating temperature range (-40°C ~ 125°C minimum). Parts meeting these core electrical and mechanical specifications are classified as direct equivalents. Parts with enhanced features such as Schmitt trigger input characteristics or automotive qualification (AEC-Q100) are classified as manufacturer-recommended alternatives, provided they maintain compatibility with the primary electrical parameters and package footprint.

Parameter Comparison

Parameter	74AHC05T14-13 (Diodes)	SN74AHC05PWR (TI)	74VHC14YTTR (STMicroelectronics)
Manufacturer	Diodes Incorporated	Texas Instruments	STMicroelectronics
Logic Type	Inverter	Inverter	Inverter
Number of Circuits	6	6	6
Number of Inputs	1	1	1
Features	Open Drain	Open Drain	Schmitt Trigger
Voltage - Supply	2V ~ 5.5V	2V ~ 5.5V	2V ~ 5.5V
Current - Quiescent (Max)	20 µA	2 µA	2 µA
Current - Output High, Low	-, 8mA	-, 8mA	8mA, 8mA
Max Propagation Delay @ V, Max CL	7.5ns @ 5V, 50pF	7.5ns @ 5V, 50pF	10.6ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	Standard	Standard	AEC-Q100 Qualified

Engineering Selection Recommendations

The SN74AHC05PWR from Texas Instruments is a direct parametric equivalent to the 74AHC05T14-13, maintaining identical supply voltage range, propagation delay, and output current specifications. Both devices are ROHS3 compliant and carry MSL 1 rating. The primary distinction is the operating temperature maximum of 85°C for the SN74AHC05PWR versus 125°C for the Diodes part; this substitution is suitable for applications with maximum operating temperatures not exceeding 85°C.

The 74VHC14YTTR from STMicroelectronics is a manufacturer-recommended alternative offering Schmitt trigger input characteristics in place of standard open drain configuration. This device maintains the same supply voltage range, 14-TSSOP package footprint, and full -40°C to 125°C operating temperature range. The 74VHC14YTTR carries AEC-Q100 automotive qualification and exhibits lower quiescent current (2 µA versus 20 µA). The propagation delay is 10.6ns at 5V with 50pF load, representing a 3.1ns increase compared to the primary part. This alternative is suitable for applications requiring enhanced noise immunity through Schmitt trigger hysteresis or automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can the SN74AHC05PWR directly replace the 74AHC05T14-13 in all applications?

A: The SN74AHC05PWR is electrically compatible for applications operating at maximum temperatures of 85°C or below. Both devices share identical supply voltage range (2V ~ 5.5V), propagation delay (7.5ns @ 5V, 50pF), and output current specifications (8mA low). Applications requiring operation above 85°C must use the 74AHC05T14-13 or 74VHC14YTTR.

Q: What is the functional difference between the 74AHC05T14-13 and the 74VHC14YTTR?

A: The 74AHC05T14-13 features open drain output configuration, while the 74VHC14YTTR incorporates Schmitt trigger input characteristics. Schmitt trigger inputs provide hysteresis, improving noise immunity in applications with slow-rising or noisy input signals. Both devices perform 6-channel inversion in the 14-TSSOP package.

Q: Are all three parts pin-compatible?

A: Yes. The 74AHC05T14-13, SN74AHC05PWR, and 74VHC14YTTR all use the 14-TSSOP package with identical pinout, enabling direct PCB footprint compatibility.

Q: Which substitute part has the lowest power consumption?

A: The SN74AHC05PWR and 74VHC14YTTR both exhibit maximum quiescent current of 2 µA, compared to 20 µA for the 74AHC05T14-13. Both alternatives reduce quiescent power consumption by a factor of 10.

Q: Is the 74VHC14YTTR suitable for automotive applications?

A: Yes. The 74VHC14YTTR carries AEC-Q100 automotive qualification and is rated for -40°C to 125°C operation, making it suitable for automotive-grade designs requiring enhanced reliability and environmental stress screening.

Q: What is the impact of the 3.1ns propagation delay increase in the 74VHC14YTTR?

A: The 74VHC14YTTR exhibits 10.6ns maximum propagation delay at 5V with 50pF load, compared to 7.5ns for the primary part. This 3.1ns difference is negligible for most digital logic applications but may be significant in high-speed timing-critical circuits where propagation delay budgets are tightly constrained.

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