SN74LVC1G32IDCKREP Equivalent & Substitute Parts

Part Overview

The SN74LVC1G32IDCKREP is a single-channel 2-input OR gate logic IC manufactured by Texas Instruments in SC-70-5 packaging. This device operates across a wide supply voltage range of 1.65V to 5.5V and is designed for low-power digital logic applications. The part is currently active in production with 2120 units in stock.

Substitute parts are necessary when the original part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements call for different thermal or operational specifications within the same functional category.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	1
Number of Inputs	2
Voltage Supply Range	1.65V ~ 5.5V
Current - Quiescent (Max)	10 µA
Current - Output High/Low	32mA / 32mA
Max Propagation Delay @ 5V, 50pF	4.5ns
Operating Temperature Range	-40°C ~ 85°C
Package / Case	5-TSSOP, SC-70-5, SOT-353
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC1G32IDCKREP is determined by the following criteria:

Mandatory Matching Parameters:

Logic Type: OR Gate (1 channel, 2 inputs)
Voltage Supply Range: 1.65V ~ 5.5V minimum
Output Current Capability: 32mA minimum for both high and low states
Package Compatibility: 5-TSSOP, SC-70-5, or SOT-353 equivalent packages
RoHS3 Compliance

Acceptable Variation Parameters:

Quiescent Current: May vary within active product specifications
Propagation Delay: Must not exceed 4.5ns at 5V, 50pF load
Operating Temperature: May extend beyond -40°C ~ 85°C range
Mounting Type: All substitutes are surface mount

Parts meeting these criteria are functionally interchangeable at the circuit level while maintaining electrical performance and compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 5V, 50pF	Operating Temp Range	Package	Product Status
SN74LVC1G32IDCKREP	Texas Instruments	1.65V ~ 5.5V	10 µA	4.5ns	-40°C ~ 85°C	SC-70-5	Active
74LVC1G32SE-7	Diodes Incorporated	1.65V ~ 5.5V	200 µA	1.7ns	-40°C ~ 125°C	SOT-353	Active
NL17SZ32DFT2G	onsemi	1.65V ~ 5.5V	1 µA	4.5ns	-55°C ~ 125°C	SC-88A (SC-70-5/SOT-353)	Active
74LVC1G32GV,125	Nexperia USA Inc.	1.65V ~ 5.5V	4 µA	4ns	-40°C ~ 125°C	SC-74A	Active
74LVC1G32GW,125	Nexperia USA Inc.	1.65V ~ 5.5V	4 µA	4ns	-40°C ~ 125°C	5-TSSOP	Active
74LVCE1G32SE-7	Diodes Incorporated	1.4V ~ 5.5V	10 µA	3.6ns	-40°C ~ 85°C	SOT-353	Active
NC7SZ32P5X	onsemi	1.65V ~ 5.5V	2 µA	4.5ns	-40°C ~ 85°C	SC-70-5	Active
NLV17SZ32DFT2G	onsemi	1.65V ~ 5.5V	1 µA	4.5ns	-55°C ~ 125°C	SC-88A (SC-70-5/SOT-353)	Obsolete
TC7SZ32FU,LJ(CT	Toshiba Semiconductor and Storage	1.8V ~ 5.5V	2 µA	4.5ns	-40°C ~ 85°C	5-SSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

Parts with Active product status and full RoHS3 compliance are preferred for new designs: 74LVC1G32GW,125 (Nexperia), 74LVC1G32SE-7 (Diodes Incorporated), and NC7SZ32P5X (onsemi). These maintain identical functional specifications and voltage supply ranges while offering extended temperature ranges or improved propagation delay characteristics.

Package-Specific Selection:

For SC-70-5 package compatibility: NC7SZ32P5X provides direct pin-compatible substitution with lower quiescent current (2 µA vs. 10 µA).
For 5-TSSOP package: 74LVC1G32GW,125 offers equivalent performance with extended operating temperature range.
For SOT-353 package: 74LVC1G32SE-7 is available with faster propagation delay (1.7ns).

Extended Temperature Applications:

Parts rated to -55°C ~ 125°C (NL17SZ32DFT2G, NLV17SZ32DFT2G) are suitable for industrial and automotive environments. NLV17SZ32DFT2G carries AEC-Q100 automotive qualification but is currently obsolete.

Avoid: NLV17SZ32DFT2G due to obsolete product status, except for legacy system maintenance where AEC-Q100 qualification is required.

Frequently Asked Questions (FAQ)

Q: Can I substitute NC7SZ32P5X for SN74LVC1G32IDCKREP in my existing design?

A: Yes. NC7SZ32P5X is pin-compatible in SC-70-5 packaging and meets all electrical requirements. It operates within the same 1.65V ~ 5.5V supply range with identical propagation delay (4.5ns @ 5V, 50pF) and output current specifications (32mA). Quiescent current is lower (2 µA vs. 10 µA), which is advantageous for low-power applications.

Q: What is the difference between 74LVC1G32GV,125 and 74LVC1G32GW,125?

A: Both parts are manufactured by Nexperia with identical electrical specifications. The primary difference is packaging: 74LVC1G32GV,125 uses SC-74A (SOT-753) package, while 74LVC1G32GW,125 uses 5-TSSOP package. Select based on your PCB layout and assembly process requirements.

Q: Is 74LVCE1G32SE-7 compatible with designs requiring 1.65V minimum supply voltage?

A: No. 74LVCE1G32SE-7 has a minimum supply voltage of 1.4V, which is lower than the original part's 1.65V specification. While this part operates at lower voltages, it is not a direct substitute if your circuit requires the 1.65V ~ 5.5V range as a design constraint.

Q: Why is NLV17SZ32DFT2G listed as obsolete?

A: NLV17SZ32DFT2G is marked obsolete by the manufacturer. While 4400 units remain in inventory, this part should not be selected for new designs. Use NL17SZ32DFT2G (active status) as the current equivalent if extended temperature range and low quiescent current are required.

Q: Can I use TC7SZ32FU,LJ(CT in applications requiring 1.65V minimum supply?

A: No. TC7SZ32FU,LJ(CT has a minimum supply voltage of 1.8V, which exceeds the original part's 1.65V minimum. This part is suitable only for applications with 1.8V ~ 5.5V supply range.

Q: What packaging options are available for direct board-level substitution?

A: SC-70-5 (NC7SZ32P5X), 5-TSSOP (74LVC1G32GW,125), and SOT-353 (74LVC1G32SE-7, 74LVCE1G32SE-7) packages are all mechanically compatible with the original SC-70-5 footprint. Verify your PCB layout supports the selected package before substitution.

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