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74AXP2T45DCH Equivalent & Substitute Parts
Part Overview
The 74AXP2T45DCH is a voltage level translator manufactured by Nexperia USA Inc., designed for bidirectional signal translation across different voltage domains. This device features 2 circuits with 1 channel per circuit and operates across supply voltages from 0.9 V to 5.5 V on both VCCA and VCCB rails. The part is housed in an 8-VSSOP surface mount package and is classified as Active product status with full RoHS3 compliance.
Equivalent and substitute parts are identified when alternative devices provide compatible functional performance within the same logic translation category while maintaining compliance with industry standards and operating within specified electrical parameters.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | 74AXP2T45DCH |
| Manufacturer | Nexperia USA Inc. |
| Category | Logic |
| Translator Type | Voltage Level |
| Channel Type | Bidirectional |
| Number of Circuits | 2 |
| Channels per Circuit | 1 |
| Voltage - VCCA | 0.9 V ~ 5.5 V |
| Voltage - VCCB | 0.9 V ~ 5.5 V |
| Output Type | Tri-State |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-VFSOP (0.091", 2.30mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the 74AXP2T45DCH are identified based on functional equivalence within the logic translation category. The primary substitution criteria are:
Critical Matching Parameters:
- Logic function classification (Translation Transceiver or Voltage Level Translator)
- Output type (Tri-State or 3-State capability)
- Surface mount mounting type
- Active product status
- RoHS3 compliance
- Operating temperature range compatibility
Secondary Considerations:
- Supply voltage range overlap
- Package form factor differences (8-VSSOP vs. 16-pin packages)
- Circuit and channel configuration differences
The substitute parts listed operate within compatible voltage ranges and maintain tri-state output functionality. However, substitute devices from Texas Instruments (74AVC and 74AVCH series) feature different package configurations and circuit densities compared to the original Nexperia 74AXP2T45DCH device.
Parameter Comparison
| Parameter | 74AXP2T45DCH (Main) | SN74AVC4T245PW | SN74AVC4T245PWR | SN74AVCH4T245D | SN74AVCH4T245DR | SN74AVCH4T245PW | SN74AVCH4T245RSVR |
|---|---|---|---|---|---|---|---|
| Manufacturer | Nexperia USA Inc. | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Category | Logic | Logic | Logic | Logic | Logic | Logic | Logic |
| Logic Type | Voltage Level Translator | Translation Transceiver | Translation Transceiver | Translation Transceiver | Translation Transceiver | Translation Transceiver | Translation Transceiver |
| Output Type | Tri-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Voltage - Supply | 0.9 V ~ 5.5 V (VCCA & VCCB) | 1.2V ~ 3.6V | 1.2V ~ 3.6V | 1.2V ~ 3.6V | 1.2V ~ 3.6V | 1.2V ~ 3.6V | 1.2V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-VFSOP (0.091", 2.30mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-UFQFN (2.6x1.8) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All listed substitute parts maintain Active product status and full RoHS3 compliance, ensuring long-term availability and environmental regulatory adherence. The 74AXP2T45DCH operates across a wider supply voltage range (0.9 V to 5.5 V) compared to substitute devices (1.2 V to 3.6 V), which may limit substitution applicability in systems requiring extended voltage domain translation.
The 74AXP2T45DCH features a narrower 8-VSSOP package footprint, while all substitute parts utilize 16-pin configurations (16-TSSOP, 16-SOIC, or 16-UFQFN). This package size difference requires PCB layout modification and may impact board space allocation.
Operating temperature range differs between the main part (-40°C to 125°C) and substitutes (-40°C to 85°C). Applications requiring operation above 85°C cannot use the listed substitute parts.
The 74AXP2T45DCH provides 2 circuits with 1 channel per circuit, while substitute parts provide 2 elements with 2 bits per element, representing different circuit architectures and functional densities.
Selection of substitute parts is appropriate only when supply voltage requirements remain within the 1.2 V to 3.6 V range, operating temperature does not exceed 85°C, and PCB layout can accommodate larger 16-pin packages.
Frequently Asked Questions (FAQ)
Q: Can the SN74AVC4T245PWR directly replace the 74AXP2T45DCH on an existing PCB?
A: Direct PCB replacement is not possible. The 74AXP2T45DCH uses an 8-VSSOP package while the SN74AVC4T245PWR uses a 16-TSSOP package. PCB layout modification is required, including trace routing changes and potential board space reallocation.
Q: What is the primary voltage range limitation when substituting with Texas Instruments parts?
A: The substitute parts operate within 1.2 V to 3.6 V supply voltage range, while the 74AXP2T45DCH supports 0.9 V to 5.5 V. Applications requiring translation at voltages below 1.2 V or above 3.6 V cannot use the listed substitutes.
Q: Are all substitute parts suitable for high-temperature applications?
A: No. The 74AXP2T45DCH operates to 125°C, while all substitute parts operate to 85°C maximum. Applications requiring operation above 85°C must use the original 74AXP2T45DCH or identify alternative parts with extended temperature ratings.
Q: What is the difference between the 74AVC and 74AVCH series substitutes?
A: Both series provide translation transceiver functionality with 3-state output capability. The 74AVCH series is available in multiple package options (16-SOIC, 16-TSSOP, 16-UFQFN), while the 74AVC series is available in 16-TSSOP and Tube packaging. Electrical specifications are equivalent within the 1.2 V to 3.6 V operating range.
Q: Which substitute part offers the smallest package footprint?
A: The SN74AVCH4T245RSVR in 16-UFQFN (2.6x1.8) package provides the smallest footprint among substitutes, though it remains larger than the original 8-VSSOP package.
Q: Are all parts listed RoHS3 compliant?
A: Yes. The 74AXP2T45DCH and all substitute parts maintain RoHS3 compliance with MSL rating of 1 (Unlimited), ensuring compatibility with lead-free manufacturing processes and environmental regulations.
Q: What packaging options are available for the substitute parts?
A: Substitute parts are available in Tube, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR) packaging formats. The original 74AXP2T45DCH is supplied in Tape & Reel format.
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