SN74CBTD3306CPWR Equivalent & Substitute Parts

Part Overview

The SN74CBTD3306CPWR is a bus switch logic IC manufactured by Texas Instruments, designed for 1 x 1:1 switching applications in 8-TSSOP surface mount packaging. This part operates with a single 4.5V to 5.5V supply and maintains an operating temperature range of -40°C to 85°C. The device is currently in active product status with 13,216 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, reaches end-of-life status, or when design flexibility requires alternative sourcing from equivalent manufacturers. The parts listed maintain identical electrical specifications and mechanical compatibility, enabling direct substitution in existing designs.

Key Parameters

Parameter	Specification
Type	Bus Switch
Circuit Configuration	1 x 1:1
Independent Circuits	2
Voltage Supply	4.5V ~ 5.5V (Single Supply)
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74CBTD3306CPWR is determined by strict equivalence across the following parameters:

Circuit configuration (1 x 1:1)
Independent circuits count (2)
Voltage supply range (4.5V ~ 5.5V)
Operating temperature range (-40°C ~ 85°C)
Package type (8-TSSOP with 0.173" width, 4.40mm)
Surface mount mounting type
RoHS3 compliance
Moisture sensitivity level (MSL 1)

All substitute parts listed maintain these specifications without deviation. Substitution is valid across different series designations (74CBTD, 74CBT, 74CBTS) and manufacturers (Texas Instruments, Nexperia USA Inc.) when these core parameters remain constant. Packaging format variations (Tape & Reel vs. Cut Tape) do not affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Operating Temp	Package	Product Status	Inventory
SN74CBTD3306CPWR	Texas Instruments	74CBTD	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	13,216 Pcs
SN74CBT3305CPWR	Texas Instruments	74CBT	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	3,300 Pcs
SN74CBT3306CPWR	Texas Instruments	74CBT	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	9,419 Pcs
SN74CBT3306PWR	Texas Instruments	74CBT	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Last Time Buy	2,300 Pcs
SN74CBT3306PWRG4	Texas Instruments	74CBT	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Obsolete	6,496 Pcs
SN74CBTD3305CPWR	Texas Instruments	74CBTD	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	3,473 Pcs
SN74CBTD3306CPWRG4	Texas Instruments	74CBTD	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Discontinued at DiGi Electronics	2,735 Pcs
SN74CBTD3306PWR	Texas Instruments	74CBTD	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Last Time Buy	2,000 Pcs
SN74CBTS3306PWR	Texas Instruments	74CBTS	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Last Time Buy	4,836 Pcs
CBT3306PW,118	Nexperia USA Inc.	74CBT	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	3,700 Pcs
CBTD3306PW,118	Nexperia USA Inc.	74CBTD	4.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	808 Pcs

Engineering Selection Recommendations

For new designs and long-term production, select from parts with Active product status: SN74CBTD3306CPWR, SN74CBT3305CPWR, SN74CBT3306CPWR, CBT3306PW,118, or CBTD3306PW,118. These parts maintain full manufacturer support and ongoing availability.

For existing designs currently using SN74CBTD3306CPWR, direct substitution is available with SN74CBT3306CPWR (Texas Instruments, Active status) or CBT3306PW,118 (Nexperia USA Inc., Active status). Both maintain identical electrical and mechanical specifications with superior long-term availability compared to Last Time Buy or Obsolete variants.

Parts designated as Last Time Buy (SN74CBT3306PWR, SN74CBTD3306PWR, SN74CBTS3306PWR) remain electrically equivalent but should be avoided for new designs due to limited future availability. Parts with Obsolete or Discontinued status (SN74CBT3306PWRG4, SN74CBTD3306CPWRG4) are not recommended for new applications.

All listed parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute SN74CBTD3306CPWR with SN74CBT3306CPWR in my existing design?

A: Yes. Both parts maintain identical electrical specifications (4.5V ~ 5.5V supply, -40°C ~ 85°C operating range), circuit configuration (1 x 1:1), and 8-TSSOP package dimensions. The substitution is electrically and mechanically valid.

Q: What is the difference between the 74CBTD, 74CBT, and 74CBTS series designations?

A: Series designations reflect internal design variations within the same functional category. All listed variants maintain the specified electrical parameters and package compatibility. Series differences do not affect substitution eligibility when core parameters remain constant.

Q: Are Nexperia parts (CBT3306PW,118 and CBTD3306PW,118) compatible with Texas Instruments parts?

A: Yes. Both manufacturers' parts meet identical specifications for voltage supply, operating temperature, circuit configuration, and 8-TSSOP packaging. Substitution between manufacturers is valid based on parameter equivalence.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect compatibility?

A: No. Packaging format differences relate only to supply and handling methods. The electrical and mechanical specifications of the component itself remain unchanged. Both formats are compatible for the same application.

Q: Should I use parts marked as Last Time Buy or Obsolete?

A: Last Time Buy and Obsolete parts are electrically equivalent but should not be selected for new designs due to limited future availability. Use Active status parts for new applications to ensure long-term supply continuity.

Q: What does MSL 1 (Unlimited) mean for this part?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without special moisture control measures. This applies to all listed substitute parts.

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