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74LVC8T245BZX Equivalent & Substitute Parts
Part Overview
The 74LVC8T245BZX is an active-status translation transceiver logic integrated circuit manufactured by Nexperia USA Inc. This component functions as a bidirectional 8-bit translator with 3-state output capability, designed for voltage level translation applications in surface-mount configurations. The device operates across a wide supply voltage range of 1.2V to 5.5V and maintains functionality across industrial temperature ranges from -40°C to 125°C.
Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers or package configurations while maintaining compliance with RoHS3 and REACH standards. Substitution becomes necessary due to inventory constraints, lead time requirements, or specific packaging preferences for board layout optimization.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Translation Transceiver |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High | 32mA |
| Current - Output Low | 32mA |
| Voltage - Supply | 1.2V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 24-XFQFN Exposed Pad |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitute parts for the 74LVC8T245BZX are classified based on the following critical parameters that determine functional equivalence:
Primary Substitution Criteria:
- Translator Type: Voltage Level Translator with Bidirectional capability
- Number of Circuits: 1
- Channels per Circuit: 8
- Output Type: Tri-State, Non-Inverted
- Channel Type: Bidirectional
- Mounting Type: Surface Mount
- RoHS3 Compliance: Required
- REACH Status: Unaffected
Secondary Considerations:
- Voltage supply range overlap with 1.2V ~ 5.5V specification
- Operating temperature range compatibility (-40°C minimum)
- Package form factor and pin count alignment
- Data rate capability (where specified)
Substitute parts are grouped into two categories: direct functional equivalents with alternative packaging, and voltage-level translators with comparable electrical characteristics but different package configurations. All identified substitutes maintain active product status and full regulatory compliance.
Parameter Comparison
| Parameter | 74LVC8T245BZX | ADG3308BCBZ-1-RL7 | ADG3308BCPZ-REEL | ADG3308BRUZ | CLVCC3245AIPWREP | FXLH42245MPX | MAX3000EEUP+ | MAX3001EEUP+ | MAX3002ETP+ |
|---|---|---|---|---|---|---|---|---|---|
| Translator Type | Voltage Level | Voltage Level | Voltage Level | Voltage Level | Voltage Level | Voltage Level | Voltage Level | Voltage Level | Voltage Level |
| Channel Type | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Channels per Circuit | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Output Type | 3-State | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted |
| Voltage - Supply (VCCA) | 1.2V ~ 5.5V | 1.15V ~ 5.5V | 1.15V ~ 5.5V | 1.15V ~ 5.5V | 2.3V ~ 3.6V | 1.1V ~ 3.6V | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 1.2V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 24-XFQFN Exposed Pad | 20-UFBGA, WLCSP | 20-WFQFN Exposed Pad, CSP | 20-TSSOP | 24-TSSOP | 24-WFQFN Exposed Pad | 20-TSSOP | 20-TSSOP | 20-WQFN Exposed Pad |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Not Specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The ADG3308 series from Analog Devices Inc. (ADG3308BCBZ-1-RL7, ADG3308BCPZ-REEL, ADG3308BRUZ) provides direct functional equivalence with 8-channel bidirectional voltage level translation in 1-circuit configuration. All variants maintain ROHS3 compliance and REACH unaffected status. The primary trade-off is the reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C) and alternative package configurations. ADG3308BCPZ-REEL offers the highest inventory availability at 9026 units.
Secondary Substitutes (Functional Equivalence with Constraints):
The CLVCC3245AIPWREP from Texas Instruments provides 24-pin TSSOP packaging with 8-channel bidirectional translation. This part maintains ROHS3 compliance but operates within a narrower voltage range (2.3V to 3.6V for VCCA, 3V to 5.5V for VCCB) and reduced temperature range (-40°C to 85°C). Selection is appropriate for applications operating within these voltage constraints.
The FXLH42245MPX from Fairchild Semiconductor offers 24-pin WFQFN packaging with dual-supply capability (1.1V to 3.6V for both supplies) and power-off protection features. RoHS status is not specified in available documentation.
Maxim Integrated MAX Series (MAX3000EEUP+, MAX3001EEUP+, MAX3002ETP+):
These parts provide 8-channel bidirectional translation with varying data rate specifications (230kbps, 4Mbps, and 35Mbps respectively). All maintain ROHS3 compliance and REACH unaffected status. Operating temperature range is -40°C to 85°C. Package configurations range from 20-TSSOP to 20-WQFN. Selection depends on required data rate performance and package footprint requirements.
Regulatory Compliance:
All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental and regulatory requirements. Moisture sensitivity levels vary from 1 (unlimited) to 3 (168 hours), requiring appropriate handling protocols during storage and assembly.
Frequently Asked Questions (FAQ)
Q: Can the ADG3308 series directly replace the 74LVC8T245BZX in all applications?
A: The ADG3308 series provides equivalent 8-channel bidirectional voltage level translation functionality. However, the operating temperature range is reduced from -40°C to 125°C to -40°C to 85°C. Applications requiring operation above 85°C require alternative selection. Package configurations differ, necessitating PCB layout modifications.
Q: What is the significance of the voltage supply range differences?
A: The 74LVC8T245BZX operates across 1.2V to 5.5V supply voltage. Substitute parts exhibit varying ranges: ADG3308 series supports 1.15V to 5.5V (VCCA) and 1.65V to 5.5V (VCCB); CLVCC3245AIPWREP operates within 2.3V to 3.6V (VCCA) and 3V to 5.5V (VCCB); FXLH42245MPX supports 1.1V to 3.6V for both supplies. Selection must confirm the substitute operates within the application's actual supply voltage range.
Q: How do package differences affect substitution decisions?
A: The 74LVC8T245BZX uses 24-XFQFN (2x4mm) packaging. Substitute parts employ alternative packages: ADG3308BCBZ-1-RL7 uses 20-WLCSP (2.5x2mm); ADG3308BCPZ-REEL uses 20-LFCSP (4x4mm); CLVCC3245AIPWREP uses 24-TSSOP; FXLH42245MPX uses 24-WFQFN. Package selection impacts PCB footprint, routing complexity, and thermal management. Pin count and pinout must be verified for compatibility with existing board designs.
Q: What is the impact of data rate specifications on substitution?
A: The 74LVC8T245BZX does not specify a data rate parameter. Substitute parts with specified data rates (ADG3308 at 50Mbps, MAX3000 at 230kbps, MAX3001 at 4Mbps, MAX3002 at 35Mbps) indicate maximum signal transition speeds. Applications requiring high-speed signal translation benefit from higher-rated parts. Lower-speed applications function with any substitute meeting the minimum required data rate.
Q: Are all substitutes suitable for high-temperature applications?
A: No. The 74LVC8T245BZX operates to 125°C. All identified substitutes operate to a maximum of 85°C. Applications requiring operation above 85°C cannot use these substitutes and require alternative component selection.
Q: What moisture sensitivity considerations apply to substitution?
A: The 74LVC8T245BZX has MSL 3 (168 hours). Substitutes vary: ADG3308BCBZ-1-RL7 and ADG3008BRUZ have MSL 1 (unlimited); ADG3308BCPZ-REEL has MSL 3 (168 hours); all Maxim parts have MSL 1 (unlimited); CLVCC3245AIPWREP has MSL 1 (unlimited). Lower MSL ratings provide extended shelf life and reduced sensitivity to humidity exposure during storage and assembly.
Q: How do I verify pin compatibility when substituting parts?
A: Pin count and pinout must be individually verified for each substitute. The 74LVC8T245BZX uses 24 pins in XFQFN configuration. Substitutes employ 20-pin (ADG3308, MAX series) or 24-pin (CLVCC3245, FXLH42245) packages. Pin assignments differ between manufacturers. Detailed pinout diagrams from each manufacturer's datasheet must be cross-referenced before PCB layout or component placement.
Q: Which substitute offers the best inventory availability?
A: ADG3308BCPZ-REEL provides the highest inventory at 9026 units. FXLH42245MPX offers 31782 units. MAX3000EEUP+ provides 20102 units. Inventory levels should be verified with current suppliers, as availability changes continuously.
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