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PI74LVC4245ALE Equivalent & Substitute Parts
Part Overview
The PI74LVC4245ALE is a bidirectional voltage level translator IC manufactured by Diodes Incorporated, housed in a 24-TSSOP package. This component functions as a translator circuit for logic signal conversion between different voltage domains. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PI74LVC4245ALE |
| Manufacturer | Diodes Incorporated |
| Series | 74LVC |
| Package / Case | 24-TSSOP (0.173", 4.40mm Width) |
| Product Status | Obsolete |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution for the PI74LVC4245ALE is determined by the following critical parameters:
- Package compatibility: 24-TSSOP form factor is the primary mechanical constraint
- Functional equivalence: Translator or transceiver logic functionality
- Voltage domain support: Supply voltage ranges that accommodate the application
- Output type: Tri-state or 3-state output capability
- Compliance standards: RoHS3 compliance and REACH unaffected status
- Product status: Active parts are preferred over obsolete alternatives
Substitute parts are grouped into two categories based on functional architecture:
- Bidirectional Translator variants (74LVC4245 series): Direct functional equivalents with identical translator topology
- Translation Transceiver variants (74AVC8T245 and 74LVC8T245 series): Enhanced transceiver functionality with different electrical characteristics
Parameter Comparison
| Parameter | PI74LVC4245ALE | 74LVC4245APW,118 | 74LVC4245APW-Q100J | 74LVC4245ABQ-Q100J | 74AVC8T245PW,118 | 74AVC8T245PW-Q100J | 74AVC8T245BQ-Q100J | 74LVC8T245PW,118 | 74LVC8T245PW-Q100J | 74LVCH8T245PW,118 | 74LVCH8T245BQ,118 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. |
| Series | 74LVC | 74LVC | 74LVC | 74LVC | 74AVC | 74AVC | 74AVC | 74LVC | 74LVC | 74LVCH | 74LVCH |
| Package / Case | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-DHVQFN (5.5x4.6) | 24-TSSOP | 24-TSSOP | 24-DHVQFN (5.5x4.6) | 24-TSSOP | 24-TSSOP | 24-TSSOP | 24-DHVQFN (5.5x4.6) |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected |
| Automotive Grade | No | No | Yes (AEC-Q100) | Yes (AEC-Q100) | No | Yes (AEC-Q100) | Yes (AEC-Q100) | No | Yes (AEC-Q100) | No | No |
| Voltage - Supply Range | 1.5V ~ 5.5V (VCCA) / 1.5V ~ 3.6V (VCCB) | 1.5V ~ 5.5V (VCCA) / 1.5V ~ 3.6V (VCCB) | 1.5V ~ 5.5V (VCCA) / 1.5V ~ 3.6V (VCCB) | Not specified | 0.8V ~ 3.6V | 0.8V ~ 3.6V | 0.8V ~ 3.6V | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 1.2V ~ 5.5V |
| Output Type | Tri-State | Tri-State | Tri-State | Not specified | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High/Low | Not specified | Not specified | Not specified | Not specified | 12mA / 12mA | 12mA / 12mA | 12mA / 12mA | 32mA / 32mA | 32mA / 32mA | 32mA / 32mA | 32mA / 32mA |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | Not specified | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility)
For direct replacement in 24-TSSOP package applications, the 74LVC4245APW,118 and 74LVC4245APW-Q100J are the preferred substitutes. Both maintain the bidirectional translator architecture and identical package footprint. The -Q100J variant includes automotive-grade qualification (AEC-Q100), suitable for applications requiring automotive compliance.
Alternative Substitutes (Different Functional Architecture)
The 74AVC8T245 and 74LVC8T245 series provide translation transceiver functionality with different electrical characteristics. These parts operate at lower supply voltage ranges (74AVC8T245: 0.8V ~ 3.6V) or higher current output (74LVC8T245: 32mA vs. unspecified for original). Selection depends on specific application voltage and current requirements.
Package Variants
For applications requiring compact form factors, 24-DHVQFN (5.5x4.6) packages are available in the 74LVC4245ABQ-Q100J, 74AVC8T245BQ-Q100J, and 74LVCH8T245BQ,118 variants. These maintain electrical compatibility while reducing board space.
Compliance Considerations
All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory standing. Automotive applications should specify AEC-Q100 qualified variants (identified by -Q100J suffix).
Frequently Asked Questions (FAQ)
Q: Can I directly replace PI74LVC4245ALE with 74LVC4245APW,118?
A: Yes. Both parts share the 24-TSSOP package, bidirectional translator functionality, and identical voltage specifications (1.5V ~ 5.5V VCCA / 1.5V ~ 3.6V VCCB). The 74LVC4245APW,118 is an active product, making it suitable for new designs and ongoing procurement.
Q: What is the difference between 74LVC4245APW,118 and 74LVC4245APW-Q100J?
A: Both parts are electrically identical with the same 24-TSSOP package and voltage specifications. The -Q100J variant includes automotive-grade qualification (AEC-Q100 certified), required for automotive applications. Select the -Q100J variant if your application requires automotive compliance.
Q: Can I use 74AVC8T245PW,118 as a substitute?
A: The 74AVC8T245PW,118 is functionally compatible but operates at a lower supply voltage range (0.8V ~ 3.6V) compared to the original part's 1.5V ~ 5.5V VCCA specification. It also provides lower output current (12mA vs. unspecified). Use this part only if your application operates within the 0.8V ~ 3.6V range and does not require higher output current.
Q: What are the package options for substitutes?
A: Substitutes are available in two packages: 24-TSSOP (standard DIP-like package) and 24-DHVQFN (5.5x4.6mm compact QFN package). The 24-TSSOP variants (74LVC4245APW,118 and 74LVC4245APW-Q100J) provide direct footprint compatibility. The 24-DHVQFN variants (74LVC4245ABQ-Q100J, 74AVC8T245BQ-Q100J, 74LVCH8T245BQ,118) require PCB layout changes but offer reduced board space.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original part's environmental compliance status.
Q: Which substitute has the highest output current capability?
A: The 74LVC8T245PW,118 and 74LVC8T245PW-Q100J provide the highest output current at 32mA (high and low). The 74AVC8T245 series provides 12mA output current. The original PI74LVC4245ALE does not specify output current in the provided data.
Q: Can I use 74LVCH8T245PW,118 for my application?
A: The 74LVCH8T245PW,118 is compatible if your application requires translation transceiver functionality with 32mA output current and operates within the 1.2V ~ 5.5V supply range. This part differs from the original bidirectional translator architecture but maintains the 24-TSSOP package and tri-state output capability.
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