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SN74CBT3306CPWRG4 Equivalent & Substitute Parts
Part Overview
The SN74CBT3306CPWRG4 is a bus switch logic integrated circuit manufactured by Texas Instruments, configured as a 1 x 1:1 switch in an 8-TSSOP surface mount package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The device operates within a single supply voltage range of 4.5V to 5.5V and maintains operational specifications across the industrial temperature range of -40°C to 85°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | SN74CBT3306CPWRG4 |
| Category | Logic |
| Type | Bus Switch |
| Circuit Configuration | 1 x 1:1 |
| Independent Circuits | 2 |
| Voltage Supply | 4.5V ~ 5.5V |
| 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) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the SN74CBT3306CPWRG4 is determined by strict equivalence across the following critical parameters:
Circuit Configuration: All substitute parts maintain the identical 1 x 1:1 bus switch configuration with 2 independent circuits.
Electrical Specifications: Voltage supply range (4.5V ~ 5.5V) and operating temperature range (-40°C ~ 85°C) are identical across all qualified substitutes.
Package Specification: All substitutes utilize the 8-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width).
Compliance Standards: All substitutes maintain ROHS3 compliance, MSL Level 1 rating, and identical ECCN and HTSUS classifications.
Substitute parts are grouped into three categories based on product status and series designation: Active Status (recommended for new designs), Last Time Buy (available but with limited procurement window), and Discontinued/Obsolete (limited availability).
Parameter Comparison
| Part Number | Manufacturer | Series | Product Status | Packaging | Circuit Config | Voltage Supply | Temp Range | Package Type | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| SN74CBT3306CPWRG4 | Texas Instruments | 74CBT | Obsolete | — | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 2200 |
| SN74CBT3306CPWR | Texas Instruments | 74CBT | Active | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 9419 |
| SN74CBT3305CPWR | Texas Instruments | 74CBT | Active | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 3300 |
| SN74CBT3306PWR | Texas Instruments | 74CBT | Last Time Buy | Cut Tape (CT) & Digi-Reel® | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 2300 |
| SN74CBT3306PWRG4 | Texas Instruments | 74CBT | Obsolete | — | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 6496 |
| SN74CBTD3305CPWR | Texas Instruments | 74CBTD | Active | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 3473 |
| SN74CBTD3306CPWR | Texas Instruments | 74CBTD | Active | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 13216 |
| SN74CBTD3306CPWRG4 | Texas Instruments | 74CBTD | Discontinued at DiGi Electronics | — | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 2735 |
| SN74CBTD3306PWR | Texas Instruments | 74CBTD | Last Time Buy | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 2000 |
| SN74CBTS3306PWR | Texas Instruments | 74CBTS | Last Time Buy | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 4836 |
| CBT3306PW,118 | Nexperia USA Inc. | 74CBT | Active | Tape & Reel (TR) | 1 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 3700 |
Engineering Selection Recommendations
For applications requiring immediate component procurement, SN74CBT3306CPWR (Texas Instruments, Active status) is the primary substitute, offering the highest inventory availability (9419 units) with confirmed Active product status and standard Tape & Reel packaging.
SN74CBTD3306CPWR (Texas Instruments, 74CBTD series, Active status) represents an alternative with the largest available inventory (13216 units) and Active product designation, suitable for designs where the 74CBTD series variant is acceptable.
CBT3306PW,118 (Nexperia USA Inc., Active status) provides a cross-manufacturer equivalent with Active product status and 3700 units in stock, offering supply chain diversification.
Parts designated as Last Time Buy (SN74CBT3306PWR, SN74CBTD3306PWR, SN74CBTS3306PWR) remain electrically and mechanically equivalent but have limited procurement windows and should be evaluated based on project timeline requirements.
All substitute parts maintain identical ROHS3 compliance, MSL Level 1 rating, and regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001), ensuring compliance continuity across design transitions.
Frequently Asked Questions (FAQ)
Q: Can SN74CBT3306CPWR be used as a direct replacement for SN74CBT3306CPWRG4?
A: Yes. Both parts share identical electrical specifications (4.5V ~ 5.5V supply, -40°C ~ 85°C operating range), circuit configuration (1 x 1:1 bus switch with 2 independent circuits), and 8-TSSOP package dimensions. The primary difference is packaging format: SN74CBT3306CPWR is supplied in Tape & Reel format, while SN74CBT3306CPWRG4 uses a different packaging designation. Both maintain ROHS3 compliance and MSL Level 1 rating.
Q: What is the difference between 74CBT, 74CBTD, and 74CBTS series variants?
A: All three series (74CBT, 74CBTD, 74CBTS) maintain identical electrical and mechanical parameters for the 3306 configuration: 1 x 1:1 circuit, 4.5V ~ 5.5V supply voltage, -40°C ~ 85°C operating temperature, and 8-TSSOP package. Series designation reflects internal design variants within the bus switch family. Selection between series should be based on product status availability and procurement requirements rather than functional differences.
Q: Are there any packaging considerations when substituting SN74CBT3306CPWRG4?
A: All qualified substitutes utilize the 8-TSSOP surface mount package with identical physical dimensions (0.173" width, 4.40mm). Packaging format differences (Tape & Reel vs. Cut Tape vs. unspecified) do not affect PCB footprint or electrical performance. Verify packaging format availability based on procurement and assembly requirements.
Q: Why is SN74CBT3306CPWRG4 listed as Obsolete?
A: Obsolete status indicates the part is no longer in active production. Substitute parts with Active status (SN74CBT3306CPWR, SN74CBTD3306CPWR, CBT3306PW,118) are recommended for new designs to ensure long-term supply chain stability and continued manufacturer support.
Q: Can I use a Nexperia part (CBT3306PW,118) instead of a Texas Instruments part?
A: Yes. CBT3306PW,118 (Nexperia USA Inc.) maintains identical electrical specifications, circuit configuration, package type, and compliance certifications as the Texas Instruments equivalents. Cross-manufacturer substitution is electrically and mechanically valid based on the provided parameters.
Q: What inventory levels should I consider for procurement planning?
A: SN74CBTD3306CPWR offers the highest inventory (13216 units), followed by SN74CBT3306CPWR (9419 units). For applications with extended lead times or high-volume requirements, these Active status parts provide the most reliable procurement availability. Last Time Buy parts (SN74CBT3306PWR, SN74CBTD3306PWR, SN74CBTS3306PWR) have limited procurement windows and should be evaluated based on project timelines.
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