74HC14DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC14DB,112 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74HC14 series provides logic inversion with hysteresis characteristics suitable for signal conditioning and digital logic applications across industrial and commercial temperature ranges.

Key Parameters

Parameter	Value
Logic Type	Inverter with Schmitt Trigger
Number of Circuits	6 Channels
Number of Inputs	1 per Channel
Supply Voltage Range	2V to 6V
Quiescent Current (Max)	2 µA
Output Current (High/Low)	5.2 mA / 5.2 mA
Input Logic Level Low	0.3V to 1.2V
Input Logic Level High	1.5V to 4.2V
Max Propagation Delay @ 6V, 50pF	21 ns
Operating Temperature	-40°C to 125°C
Package Type	14-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74HC14DB,112 is determined by the following critical parameters:

Logic Function: All substitutes must provide 6-channel inverter operation with Schmitt trigger inputs
Electrical Specifications: Supply voltage (2V–6V), quiescent current (2 µA max), output current (5.2 mA), input logic levels, and propagation delay (21 ns @ 6V, 50pF) must be identical or equivalent
Package Compatibility: Substitutes are grouped by package type—14-SSOP (same as original) or 14-TSSOP (alternative surface mount package with different pitch and width)
Operating Temperature Range: The original part supports -40°C to 125°C; substitutes may support this range or -55°C to 125°C (extended low-temperature capability)
Product Status: Active parts are preferred over discontinued or obsolete variants for long-term availability
Compliance: All substitutes maintain ROHS3 compliance, MSL Level 1, and EAR99 classification

Substitutes are organized into two groups: Same Package (14-SSOP) and Alternative Package (14-TSSOP).

Parameter Comparison

Part Number	Manufacturer	Package	Status	Temp Range (°C)	Prop. Delay (ns)	Inventory
74HC14DB,112	Nexperia USA Inc.	14-SSOP	Obsolete	-40 to 125	21 @ 6V, 50pF	924
SN74HC14DBR	Texas Instruments	14-SSOP	Active	-40 to 85	21 @ 6V, 50pF	3760
74HC14PW,118	Nexperia USA Inc.	14-TSSOP	Active	-40 to 125	21 @ 6V, 50pF	1000200
CD74HC14PWR	Texas Instruments	14-TSSOP	Active	-55 to 125	23 @ 6V, 50pF	4095
MM74HC14MTC	onsemi	14-TSSOP	Active	-55 to 125	21 @ 6V, 50pF	2400
MM74HC14MTCX	onsemi	14-TSSOP	Active	-55 to 125	21 @ 6V, 50pF	5300
SN74HC14PW	Texas Instruments	14-TSSOP	Discontinued at DiGi Electronics	-40 to 85	21 @ 6V, 50pF	3300
SN74HC14PWR	Texas Instruments	14-TSSOP	Active	-40 to 85	21 @ 6V, 50pF	2005400
SN74HC14PWT	Texas Instruments	14-TSSOP	Discontinued at DiGi Electronics	-40 to 85	21 @ 6V, 50pF	5311
SN74HC14QPWRG4Q1	Texas Instruments	14-TSSOP	Active	-40 to 125	21 @ 6V, 50pF	3200
SN74HC14QPWRQ1	Texas Instruments	14-TSSOP	Active	-40 to 125	21 @ 6V, 50pF	6300

Engineering Selection Recommendations

For Same-Package Replacement (14-SSOP):

SN74HC14DBR from Texas Instruments is the only active substitute in the original 14-SSOP package. It maintains identical electrical specifications and propagation delay. The operating temperature range is -40°C to 85°C, which is narrower than the original part's -40°C to 125°C range. Select this part only if your application does not require operation above 85°C.

For Package-Compatible Alternatives (14-TSSOP):

The 14-TSSOP package offers superior availability and active product status across multiple manufacturers. Selection depends on temperature requirements and propagation delay tolerance:

Extended Temperature Range (-55°C to 125°C): MM74HC14MTC, MM74HC14MTCX (onsemi), and CD74HC14PWR (Texas Instruments) support operation to -55°C. CD74HC14PWR has a maximum propagation delay of 23 ns, which is 2 ns higher than the original specification.
Standard Temperature Range (-40°C to 85°C): SN74HC14PWR and SN74HC14QPWRQ1 (Texas Instruments) provide the highest inventory availability. SN74HC14PWR has 2,005,400 units in stock. SN74HC14QPWRQ1 includes AEC-Q100 automotive qualification and supports -40°C to 125°C operation.
Automotive Grade: SN74HC14QPWRG4Q1 and SN74HC14QPWRQ1 carry AEC-Q100 qualification for automotive applications with -40°C to 125°C operating range.

All substitutes maintain ROHS3 compliance, MSL Level 1, and identical supply voltage, quiescent current, and output current specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 14-TSSOP package part as a direct replacement for the 14-SSOP original?

A: Electrically, yes. The 14-TSSOP and 14-SSOP packages are both surface mount with 14 pins and identical pin assignments. However, the packages have different physical dimensions: 14-SSOP is 0.209" wide (5.30mm), while 14-TSSOP is 0.173" wide (4.40mm). PCB layout and footprint must be verified for compatibility. If your PCB is designed for 14-SSOP, you must confirm that 14-TSSOP footprints are acceptable or redesign the layout.

Q: What is the difference between SN74HC14PWR and SN74HC14QPWRQ1?

A: Both parts are Texas Instruments 14-TSSOP inverters with identical electrical specifications. SN74HC14QPWRQ1 includes AEC-Q100 automotive qualification and supports -40°C to 125°C operation, while SN74HC14PWR is rated for -40°C to 85°C. Choose SN74HC14QPWRQ1 for automotive applications or designs requiring full -40°C to 125°C temperature coverage.

Q: Why does CD74HC14PWR show 23 ns propagation delay instead of 21 ns?

A: CD74HC14PWR from Texas Instruments has a maximum propagation delay specification of 23 ns at 6V with 50pF load, compared to 21 ns for most other substitutes. This 2 ns difference is within typical manufacturing tolerance but should be evaluated if your design has tight timing constraints.

Q: Which substitute offers the best long-term availability?

A: SN74HC14PWR (Texas Instruments, 14-TSSOP) has the highest inventory at 2,005,400 units and active product status, making it the most reliable choice for long-term production requirements.

Q: Can I use parts rated for -40°C to 85°C in applications requiring -40°C to 125°C operation?

A: No. If your application requires operation above 85°C, select substitutes with extended temperature ratings: MM74HC14MTC, MM74HC14MTCX (onsemi, -55°C to 125°C), SN74HC14QPWRG4Q1, or SN74HC14QPWRQ1 (Texas Instruments, -40°C to 125°C).

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, MSL Level 1, and identical regulatory classifications (EAR99, HTSUS 8542.39.0001).

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