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SN74LVC4245APW Equivalent & Substitute Parts
Part Overview
The SN74LVC4245APW is a voltage level translator IC manufactured by Texas Instruments, designed for bidirectional translation between different voltage domains. This 24-TSSOP surface mount device operates with VCCA at 4.5V to 5.5V and VCCB at 2.7V to 3.6V, providing 8 channels in a single circuit configuration with tri-state output capability. The part is active in production with 616,400 units currently in stock. Alternative models are necessary when design requirements include extended operating temperature ranges, automotive qualification, different packaging formats, or enhanced voltage compatibility across broader supply ranges.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | SN74LVC4245APW |
| Series | 74LVC |
| Translator Type | Voltage Level |
| Channel Type | Bidirectional |
| Number of Circuits | 1 |
| Channels per Circuit | 8 |
| Voltage - VCCA | 4.5V ~ 5.5V |
| Voltage - VCCB | 2.7V ~ 3.6V |
| Output Type | Tri-State |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the SN74LVC4245APW is determined by the following critical parameters: translator type (voltage level), channel type (bidirectional), number of circuits (1), channels per circuit (8), output type (tri-state), package compatibility, and operating temperature range. Parts are grouped into three categories based on substitution relationship:
Parametric Equivalent: SN74LVCC4245APW maintains identical circuit configuration and package format with extended VCCB voltage range (2.7V ~ 5.5V) and identical operating temperature limits.
Upgrade Substitutes: 74LVC4245APW-Q100J and 74LVC4245APW,118 provide extended operating temperature range (-40°C ~ 125°C), broader voltage compatibility (VCCA 1.5V ~ 5.5V, VCCB 1.5V ~ 3.6V), and automotive qualification (AEC-Q100). These maintain the 24-TSSOP package and 8-channel bidirectional configuration.
Alternative Package Options: 74LVC4245ABQ-Q100J offers the same electrical specifications in 24-DHVQFN package format. 74LVC8T245PW,118 and 74LVC8T245PW-Q100J provide translation transceiver functionality with identical channel count and tri-state output in 24-TSSOP packaging.
Cross-Manufacturer Alternatives: 74LVCH8T245PW-Q10J and 74LVCH8T245BQ-Q10J (Nexperia) provide equivalent translation transceiver performance with automotive qualification. FXL4245MPX (onsemi) offers bidirectional translation in 24-MLP package with power-off protection. FXMA108BQX (onsemi) provides 8-channel bidirectional translation with auto-direction sensing in 20-DQFN package.
Parameter Comparison
| Part Number | Manufacturer | Translator Type | Channels | VCCA Range | VCCB Range | Output Type | Temp Range | Package | Automotive Grade |
|---|---|---|---|---|---|---|---|---|---|
| SN74LVC4245APW | Texas Instruments | Voltage Level | 8 | 4.5V ~ 5.5V | 2.7V ~ 3.6V | Tri-State | -40°C ~ 85°C | 24-TSSOP | No |
| SN74LVCC4245APW | Texas Instruments | Voltage Level | 8 | 4.5V ~ 5.5V | 2.7V ~ 5.5V | Tri-State | -40°C ~ 85°C | 24-TSSOP | No |
| 74LVC4245APW-Q100J | Nexperia USA Inc. | Voltage Level | 8 | 1.5V ~ 5.5V | 1.5V ~ 3.6V | Tri-State | -40°C ~ 125°C | 24-TSSOP | Yes (AEC-Q100) |
| 74LVC4245APW,118 | Nexperia USA Inc. | Voltage Level | 8 | 1.5V ~ 5.5V | 1.5V ~ 3.6V | Tri-State | -40°C ~ 125°C | 24-TSSOP | No |
| 74LVC4245ABQ-Q100J | Nexperia USA Inc. | Voltage Level | 8 | N/A | N/A | Tri-State | N/A | 24-DHVQFN | Yes (AEC-Q100) |
| 74LVC8T245PW,118 | Nexperia USA Inc. | Translation Transceiver | 8 | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 3-State | -40°C ~ 125°C | 24-TSSOP | No |
| 74LVC8T245PW-Q100J | Nexperia USA Inc. | Translation Transceiver | 8 | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 3-State | -40°C ~ 125°C | 24-TSSOP | Yes (AEC-Q100) |
| 74LVCH8T245PW-Q10J | Nexperia USA Inc. | Translation Transceiver | 8 | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 3-State | -40°C ~ 125°C | 24-TSSOP | Yes (AEC-Q100) |
| 74LVCH8T245BQ-Q10J | Nexperia USA Inc. | Translation Transceiver | 8 | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 3-State | -40°C ~ 125°C | 24-DHVQFN | Yes (AEC-Q100) |
| FXL4245MPX | onsemi | Voltage Level | 8 | 1.1V ~ 3.6V | 1.1V ~ 3.6V | Tri-State | -40°C ~ 85°C | 24-MLP | No |
| FXMA108BQX | onsemi | Voltage Level | 8 | 1.65V ~ 5.5V | 1.65V ~ 5.5V | Tri-State | -40°C ~ 85°C | 20-DQFN | No |
Engineering Selection Recommendations
Direct Replacement (Same Package, Same Thermal Range): SN74LVCC4245APW serves as a parametric equivalent when extended VCCB voltage range (up to 5.5V) is beneficial. Both parts maintain -40°C to 85°C operating temperature and 24-TSSOP packaging. Selection depends on whether the application requires VCCB operation above 3.6V.
Extended Temperature Applications: 74LVC4245APW-Q100J and 74LVC4245APW,118 are suitable when operating temperature must reach 125°C. Both provide broader voltage compatibility (VCCA 1.5V ~ 5.5V, VCCB 1.5V ~ 3.6V) and maintain 24-TSSOP packaging. The Q100J variant includes AEC-Q100 automotive qualification; the ,118 variant does not.
Automotive-Qualified Substitutes: 74LVC4245APW-Q100J, 74LVC8T245PW-Q100J, 74LVCH8T245PW-Q10J, and 74LVCH8T245BQ-Q10J all carry AEC-Q100 qualification for automotive applications. These parts support extended temperature operation (-40°C ~ 125°C) and are suitable for designs requiring automotive-grade components.
Alternative Package Formats: 74LVC4245ABQ-Q100J provides identical electrical function in 24-DHVQFN package with automotive qualification. 74LVCH8T245BQ-Q10J offers translation transceiver functionality in 24-DHVQFN format. FXL4245MPX provides bidirectional translation in 24-MLP package. FXMA108BQX offers 8-channel translation in compact 20-DQFN package with auto-direction sensing.
Cross-Manufacturer Options: Nexperia and onsemi alternatives maintain functional equivalence with the original Texas Instruments part. All substitute parts listed are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity).
Frequently Asked Questions (FAQ)
Q: Can SN74LVCC4245APW replace SN74LVC4245APW directly? A: Yes, SN74LVCC4245APW is a parametric equivalent with identical package (24-TSSOP), circuit configuration (1 circuit, 8 channels), and operating temperature range (-40°C ~ 85°C). The primary difference is extended VCCB voltage range (2.7V ~ 5.5V versus 2.7V ~ 3.6V). Direct substitution is valid when VCCB operation above 3.6V is not required.
Q: What is the difference between 74LVC4245 and 74LVC8T245 series? A: Both provide 8-channel bidirectional translation in 24-TSSOP packaging. The 74LVC4245 is a voltage level translator with separate VCCA and VCCB supplies. The 74LVC8T245 is a translation transceiver with unified supply voltage (1.2V ~ 5.5V). Selection depends on whether your application requires dual independent supply voltages or single supply operation.
Q: Are automotive-qualified parts (AEC-Q100) backward compatible with standard industrial parts? A: Automotive-qualified parts (74LVC4245APW-Q100J, 74LVC8T245PW-Q100J, 74LVCH8T245PW-Q10J, 74LVCH8T245BQ-Q10J) are functionally compatible with standard industrial equivalents. AEC-Q100 qualification indicates additional testing and reliability requirements. Automotive parts can be used in industrial applications; however, industrial parts should not be substituted in automotive designs requiring qualification.
Q: What packaging options are available for 8-channel bidirectional translation? A: The primary packaging options are 24-TSSOP (SN74LVC4245APW, 74LVC4245APW-Q100J, 74LVC4245APW,118, 74LVC8T245PW,118, 74LVC8T245PW-Q100J, 74LVCH8T245PW-Q10J), 24-DHVQFN (74LVC4245ABQ-Q100J, 74LVCH8T245BQ-Q10J), 24-MLP (FXL4245MPX), and 20-DQFN (FXMA108BQX). Package selection depends on PCB layout constraints and thermal management requirements.
Q: Can FXL4245MPX or FXMA108BQX replace SN74LVC4245APW? A: FXL4245MPX and FXMA108BQX provide bidirectional translation functionality but with different voltage specifications and package formats. FXL4245MPX operates with VCCA and VCCB both at 1.1V ~ 3.6V (narrower range than the original part). FXMA108BQX supports 1.65V ~ 5.5V on both supplies with auto-direction sensing and operates at 100Mbps. These are functional alternatives when package constraints or voltage requirements differ from the original specification.
Q: What is the inventory status for substitute parts? A: Current inventory levels vary: SN74LVC4245APW (616,400 units), 74LVC4245APW,118 (220,341 units), 74LVC8T245PW-Q100J (9,348 units), 74LVCH8T245BQ-Q10J (28,250 units), 74LVCH8T245PW-Q10J (6,398 units), FXL4245MPX (19,376 units), and FXMA108BQX (15,448 units). Availability should be verified with your component supplier for current stock status.
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