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PI74AVC164245AAEX Equivalent & Substitute Parts
Part Overview
The PI74AVC164245AAEX is a voltage level translator IC manufactured by Diodes Incorporated, designed for bidirectional translation between two different voltage domains. This 48-TSSOP package device features 2 circuits with 8 channels per circuit, operating between VCCA (2.3V–2.7V) and VCCB (3V–3.6V). The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Translator Type | Voltage Level |
| Channel Type | Bidirectional |
| Number of Circuits | 2 |
| Channels per Circuit | 8 |
| Voltage - VCCA | 2.3V ~ 2.7V |
| Voltage - VCCB | 3V ~ 3.6V |
| Output Type | Tri-State, Non-Inverted |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-TFSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the PI74AVC164245AAEX is determined by the following critical parameters:
- Translator Type & Channel Configuration: Bidirectional, 2 circuits, 8 channels per circuit
- Voltage Compatibility: VCCA and VCCB operating ranges must accommodate the original specifications or provide broader ranges
- Output Characteristics: Tri-state, non-inverted output
- Package Compatibility: 48-pin TSSOP or 48-pin SSOP packages
- Operating Temperature Range: Minimum -40°C to 85°C
- Compliance: RoHS3 compliance and MSL rating
Substitute parts are grouped into two categories based on package type: 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width). Parts within each package category are electrically compatible when voltage ranges encompass or match the original specifications.
Parameter Comparison
| Part Number | Manufacturer | Series | Voltage VCCA | Voltage VCCB | Package / Case | Product Status | Operating Temp | RoHS Status | MSL |
|---|---|---|---|---|---|---|---|---|---|
| PI74AVC164245AAEX | Diodes Incorporated | 74AVC | 2.3V ~ 2.7V | 3V ~ 3.6V | 48-TFSOP (0.173", 4.40mm) | Obsolete | -40°C ~ 85°C | ROHS3 | 1 |
| 74ALVC164245PAG8 | IDT | 74ALVC | 2.7V ~ 3.6V | 4.5V ~ 5.5V | 48-TFSOP (0.240", 6.10mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
| 74FCT164245TPAG | Renesas Electronics | 74FCT | 2.7V ~ 3.6V | 4.5V ~ 5.5V | 48-TFSOP (0.240", 6.10mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
| AVC16T245DGGR-D | Texas Instruments | 74AVC | 1.2V ~ 3.6V | 1.2V ~ 3.6V | 48-TFSOP (0.240", 6.10mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
| 74ALVC164245PVG8 | Renesas Electronics | 74ALVC | 2.7V ~ 3.6V | 4.5V ~ 5.5V | 48-BSSOP (0.295", 7.50mm) | Active | -40°C ~ 85°C | ROHS3 | 3 |
| 74AVCB164245GRE4 | Texas Instruments | 74AVCB | 1.4V ~ 3.6V | 1.4V ~ 3.6V | 48-TFSOP (0.240", 6.10mm) | Discontinued | -40°C ~ 85°C | ROHS3 | 1 |
| 74FCT164245TPVG8 | Renesas Electronics | 74FCT | 2.7V ~ 3.6V | 4.5V ~ 5.5V | 48-BSSOP (0.295", 7.50mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
| CALVC164245IDLREP | Texas Instruments | 74ALVC | 2.3V ~ 3.6V | 3V ~ 5.5V | 48-BSSOP (0.295", 7.50mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
| CAVCB164245MDGGREP | Texas Instruments | 74AVCB | 1.4V ~ 3.6V | 1.4V ~ 3.6V | 48-TFSOP (0.240", 6.10mm) | Active | -55°C ~ 125°C | ROHS3 | 1 |
| CAVCB164245QDGGRQ1 | Texas Instruments | 74AVCB | 1.4V ~ 3.6V | 1.4V ~ 3.6V | 48-TFSOP (0.240", 6.10mm) | Active | -40°C ~ 125°C | ROHS3 | 3 |
| CLVC16T245MDGGEP | Texas Instruments | 74LVC | 1.65V ~ 5.5V | 1.65V ~ 5.5V | 48-TFSOP (0.240", 6.10mm) | Active | -40°C ~ 85°C | ROHS3 | 1 |
Engineering Selection Recommendations
For Direct Replacement (48-TFSOP Package, 0.240" Width):
The AVC16T245DGGR-D (Texas Instruments, 74AVC series) provides the closest functional match with active product status. Its voltage range (1.2V–3.6V for both VCCA and VCCB) encompasses the original PI74AVC164245AAEX specifications. This part maintains RoHS3 compliance and MSL-1 rating.
The CAVCB164245MDGGREP and CAVCB164245QDGGRQ1 (Texas Instruments, 74AVCB series) offer extended temperature ranges (-55°C to 125°C and -40°C to 125°C respectively) with symmetric voltage support (1.4V–3.6V). The CAVCB164245QDGGRQ1 includes automotive-grade qualification (AEC-Q100).
For Broader Voltage Compatibility (48-TFSOP Package, 0.240" Width):
The CLVC16T245MDGGEP (Texas Instruments, 74LVC series) supports the widest voltage range (1.65V–5.5V) and maintains active status with RoHS3 compliance and MSL-1 rating.
For 48-BSSOP Package (0.295" Width) Applications:
The CALVC164245IDLREP (Texas Instruments) provides voltage ranges (VCCA: 2.3V–3.6V, VCCB: 3V–5.5V) that directly encompass the original specifications. The 74ALVC164245PVG8 (Renesas) and 74FCT164245TPVG8 (Renesas) are active alternatives with standard voltage ranges (2.7V–3.6V and 4.5V–5.5V).
All recommended substitutes maintain RoHS3 compliance and operate within the -40°C to 85°C temperature range of the original part.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with a different package size?
A: Package size substitution requires PCB layout modification. The original PI74AVC164245AAEX uses 48-TFSOP (0.173", 4.40mm width). Substitutes are available in 48-TFSOP (0.240", 6.10mm width) and 48-BSSOP (0.295", 7.50mm width). Physical footprint differences necessitate board redesign.
Q: What is the voltage compatibility requirement?
A: The substitute part's VCCA and VCCB ranges must either match or exceed the original specifications. The PI74AVC164245AAEX requires VCCA 2.3V–2.7V and VCCB 3V–3.6V. Parts with broader ranges (e.g., 1.2V–3.6V or 1.65V–5.5V) are compatible. Parts with narrower ranges may not support all original operating conditions.
Q: Are all substitutes RoHS3 compliant?
A: Yes, all listed substitute parts are RoHS3 compliant. Moisture sensitivity levels vary between MSL-1 (unlimited) and MSL-3 (168 hours), affecting storage and handling requirements.
Q: Which substitute offers the best temperature range coverage?
A: The CAVCB164245MDGGREP and CAVCB164245QDGGRQ1 extend to -55°C and -40°C respectively at the upper end (125°C), compared to the standard -40°C to 85°C range. The CAVCB164245QDGGRQ1 includes automotive-grade qualification.
Q: Can I substitute an obsolete part with a discontinued part?
A: The 74AVCB164245GRE4 is listed as discontinued at DiGi Electronics. While functionally compatible, discontinued parts may have limited availability. Active-status alternatives are preferred for long-term supply assurance.
Q: What is the difference between 74AVC, 74ALVC, 74AVCB, 74FCT, and 74LVC series?
A: These represent different logic families with varying voltage and speed characteristics. The 74AVC series (original) operates at lower voltages (2.3V–3.6V). The 74ALVC series supports higher VCCB (4.5V–5.5V). The 74AVCB series provides symmetric voltage support (1.4V–3.6V). The 74FCT series matches 74ALVC specifications. The 74LVC series offers the widest voltage range (1.65V–5.5V). Selection depends on system voltage requirements.
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