CLVC1G126IDCKREP Equivalent & Substitute Parts

Part Overview

The CLVC1G126IDCKREP is a non-inverting buffer logic IC manufactured by Texas Instruments, part of the 74LVC series. This device provides a single-element, 1-bit buffer with 3-state output capability, operating across a supply voltage range of 1.65V to 5.5V. The part is currently active in production and available in SC-70-5 (5-TSSOP) surface mount packaging. Equivalent and substitute parts are necessary when the primary part experiences supply constraints, lead time extensions, or when design requirements necessitate alternative packaging formats or manufacturer options while maintaining functional compatibility.

Key Parameters

Parameter	Value
Logic Type	Buffer, Non-Inverting
Number of Elements	1
Number of Bits per Element	1
Output Type	3-State
Current - Output High, Low	32mA, 32mA
Voltage - Supply	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	5-TSSOP, SC-70-5, SOT-353
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CLVC1G126IDCKREP is determined by strict equivalence across the following parameters: logic type (buffer, non-inverting), number of elements (1), bits per element (1), output type (3-state), output current capability (32mA high and low), supply voltage range (1.65V ~ 5.5V minimum), package compatibility (5-TSSOP/SC-70-5/SOT-353), and compliance certifications (ROHS3, MSL 1). Operating temperature range may extend beyond the base specification without affecting functional substitution. Substitute parts are categorized as parametric equivalents (identical electrical and mechanical specifications), direct substitutes (functionally equivalent with minor packaging variations), upgrades (extended temperature range), and manufacturer-recommended alternatives (active production status with equivalent performance).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Output Current (mA)	Supply Voltage	Operating Temp (°C)	Package	Product Status	Packaging Type
CLVC1G126IDCKREP	Texas Instruments	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Active	Tape & Reel (TR)
CLVC1G125IDCKREP	Texas Instruments	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Active	Cut Tape (CT) & Digi-Reel®
SN74LVC1G125DCK3	Texas Instruments	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Active	Cut Tape (CT) & Digi-Reel®
NLV17SZ126DFT2G	onsemi	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 125	SC-70-5	Obsolete	Tape & Reel (TR)
74LVC1G126GW,125	Nexperia USA Inc.	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 125	5-TSSOP	Active	Cut Tape (CT) & Digi-Reel®
74LVC1G126GV,125	Nexperia USA Inc.	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 125	SC-74A	Active	Cut Tape (CT) & Digi-Reel®
74LVC1G126SE-7	Diodes Incorporated	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 125	SOT-353	Active	Tape & Reel (TR)
NL17SZ126DFT2G	onsemi	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 125	SC-70-5	Active	Cut Tape (CT) & Digi-Reel®
NC7SZ125P5X	onsemi	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Active	Cut Tape (CT) & Digi-Reel®
NC7SZ125P5X-F22057	onsemi	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Last Time Buy	Tape & Reel (TR)
NC7SZ126P5X-F22057	onsemi	Buffer, Non-Inverting	32, 32	1.65V ~ 5.5V	-40 ~ 85	SC-70-5	Last Time Buy	Tape & Reel (TR)

Engineering Selection Recommendations

For active production designs, prioritize parts with Active product status: CLVC1G125IDCKREP, SN74LVC1G125DCK3, 74LVC1G126GW,125, 74LVC1G126GV,125, 74LVC1G126SE-7, and NL17SZ126DFT2G. All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Texas Instruments parts (CLVC1G125IDCKREP, SN74LVC1G125DCK3) provide direct equivalence with identical operating temperature range (-40°C ~ 85°C) and are available in high inventory quantities. Nexperia USA Inc. alternatives (74LVC1G126GW,125, 74LVC1G126GV,125) and Diodes Incorporated (74LVC1G126SE-7) offer extended operating temperature range (-40°C ~ 125°C), suitable for applications requiring broader thermal performance. onsemi parts (NL17SZ126DFT2G, NC7SZ125P5X) provide equivalent functionality with active or extended product status.

Parts designated Last Time Buy (NC7SZ125P5X-F22057, NC7SZ126P5X-F22057) and Obsolete (NLV17SZ126DFT2G) should be avoided for new designs unless existing inventory commitments require their use.

Frequently Asked Questions (FAQ)

Q: Can CLVC1G125IDCKREP directly replace CLVC1G126IDCKREP? A: Yes. Both parts are Texas Instruments 74LVC series non-inverting buffers with identical electrical specifications (32mA output current, 1.65V ~ 5.5V supply, -40°C ~ 85°C operating range) and SC-70-5 packaging. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel).

Q: What is the difference between SC-70-5 and SC-74A packages? A: SC-70-5 and SC-74A are both 5-pin surface mount packages compatible with the same footprint and pinout. SC-74A is a variant designation used by Nexperia. Both packages support the same electrical specifications and are mechanically interchangeable in PCB design.

Q: Are onsemi NC7SZ125P5X and NC7SZ126P5X functionally equivalent? A: Yes. Both onsemi parts are non-inverting buffers with identical electrical parameters (32mA output current, 1.65V ~ 5.5V supply, -40°C ~ 85°C operating range) and SC-70-5 packaging. Substitution between these parts is electrically valid.

Q: Why do some substitutes have extended operating temperature (-40°C ~ 125°C)? A: Extended temperature range parts (Nexperia 74LVC1G126GW,125 and 74LVC1G126GV,125; onsemi NL17SZ126DFT2G) provide broader thermal performance capability. These parts are fully compatible with designs requiring the base specification (-40°C ~ 85°C) and offer additional margin for high-temperature applications.

Q: Should Last Time Buy parts be used in new designs? A: No. Parts marked Last Time Buy (NC7SZ125P5X-F22057, NC7SZ126P5X-F22057) have limited remaining inventory and discontinued production. These parts should only be used to fulfill existing design commitments or inventory obligations. New designs should select from Active status alternatives.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage requirements.

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