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PI74FCT16245ATV Equivalent & Substitute Parts
Part Overview
The PI74FCT16245ATV is a non-inverting transceiver logic IC manufactured by Diodes Incorporated, featuring 2 elements with 8 bits per element and 3-state output capability. This 48-SSOP surface mount device operates across a 4.5V to 5.5V supply range and is rated for -40°C to 85°C operating temperature. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-BSSOP (0.295", 7.50mm Width) |
| Series | 74FCT |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the PI74FCT16245ATV is determined by strict equivalence across the following critical parameters:
Primary Substitution Criteria:
- Logic type: Non-inverting transceiver
- Element and bit configuration: 2 elements, 8 bits per element
- Output configuration: 3-state output
- Supply voltage range: 4.5V ~ 5.5V
- Operating temperature range: -40°C ~ 85°C
- Series classification: 74FCT
Package Compatibility Considerations: Substitutes are grouped into two package categories: 48-BSSOP (0.295", 7.50mm Width) and 48-TFSOP (0.240", 6.10mm Width). While both are 48-pin surface mount packages, physical dimensions differ. The 48-BSSOP maintains identical footprint compatibility with the original PI74FCT16245ATV, whereas 48-TFSOP variants require PCB layout verification due to reduced width.
Output Current Variations: The original part specifies 32mA (high) and 64mA (low) output current. Substitute parts from Texas Instruments, Renesas, and Cypress specify 24mA (high) and 24mA (low). These reduced current ratings represent a functional constraint that must be evaluated against system load requirements.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Package / Case | Current - Output High, Low | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|
| PI74FCT16245ATV | Diodes Incorporated | 48-BSSOP (0.295", 7.50mm) | 32mA, 64mA | Obsolete | 701 |
| 74FCT16245ATPVG | IDT | 48-BSSOP (0.295", 7.50mm) | 32mA, 64mA | Active | 1310 |
| 74FCT162245ATPACT | Texas Instruments | 48-TFSOP (0.240", 6.10mm) | 24mA, 24mA | Obsolete | 3200 |
| 74FCT162245ATPAG | Renesas Electronics | 48-TFSOP (0.240", 6.10mm) | 24mA, 24mA | Obsolete | 1114 |
| 74FCT162245ATPVCT | Cypress Semiconductor | 48-BSSOP (0.295", 7.50mm) | 24mA, 24mA | Active | 2060 |
| 74FCT162245ATPVG | Renesas Electronics | 48-BSSOP (0.295", 7.50mm) | 24mA, 24mA | Obsolete | 1214 |
| 74FCT162245CTPACT | Texas Instruments | 48-TFSOP (0.240", 6.10mm) | 24mA, 24mA | Obsolete | 873 |
| 74FCT162245CTPAG | IDT | 48-TFSOP (0.240", 6.10mm) | 24mA, 24mA | Active | 2527 |
| 74FCT162245CTPAG8 | IDT | 48-TFSOP (0.240", 6.10mm) | 24mA, 24mA | Active | 2175 |
| 74FCT16245ATPAG | IDT | 48-TFSOP (0.240", 6.10mm) | 32mA, 64mA | Active | 6679 |
| 74FCT16245ATPAG8 | Renesas Electronics | 48-TFSOP (0.240", 6.10mm) | 32mA, 64mA | Active | 6497 |
Engineering Selection Recommendations
Tier 1 - Direct Replacement (Identical Output Current): The 74FCT16245ATPVG (IDT, Active status) provides direct functional equivalence with matching 32mA/64mA output current and 48-BSSOP package footprint. This part maintains full compatibility with existing PCB designs and system load specifications.
Tier 2 - Package-Compatible Substitutes (Reduced Output Current): The 74FCT162245ATPVCT (Cypress Semiconductor, Active status) offers 48-BSSOP package compatibility but with reduced output current (24mA/24mA). This substitution is valid only when system load requirements do not exceed the reduced current specifications. Cypress Semiconductor maintains active product status, ensuring long-term availability.
Tier 3 - Package Variant Substitutes (Reduced Output Current): The 74FCT16245ATPAG and 74FCT16245ATPAG8 (IDT and Renesas, both Active status) maintain the original 32mA/64mA output current but use the 48-TFSOP package (0.240", 6.10mm width). These parts require PCB layout modification due to package dimension differences but preserve electrical performance characteristics.
Tier 4 - Reduced Current Variants (48-TFSOP Package): The 74FCT162245CTPAG and 74FCT162245CTPAG8 (IDT, Active status) provide active product availability with 48-TFSOP package compatibility. Output current is reduced to 24mA/24mA, requiring load verification.
Compliance Considerations: Parts with ROHS3 compliance designation (74FCT162245ATPACT, 74FCT162245ATPAG, 74FCT162245ATPVG, 74FCT162245CTPACT) meet RoHS3 requirements. All listed substitutes maintain REACH unaffected status and EAR99 export classification consistent with the original part.
Frequently Asked Questions (FAQ)
Q: Can I use 74FCT162245 series parts as substitutes for PI74FCT16245ATV? A: The 74FCT162245 series shares the same logic type, element configuration, and voltage specifications. However, output current is reduced from 32mA/64mA to 24mA/24mA. Substitution is valid only if system load requirements do not exceed 24mA output current. Verify load specifications before implementation.
Q: What is the difference between 48-BSSOP and 48-TFSOP packages? A: Both are 48-pin surface mount packages. The 48-BSSOP measures 0.295" (7.50mm) in width, while 48-TFSOP measures 0.240" (6.10mm) in width. The PI74FCT16245ATV uses 48-BSSOP. Switching to 48-TFSOP requires PCB layout modification and footprint verification. 48-BSSOP substitutes maintain direct PCB compatibility.
Q: Why is the original PI74FCT16245ATV listed as obsolete? A: Obsolete status indicates the manufacturer has discontinued production. Active substitutes from IDT, Cypress Semiconductor, and Renesas Electronics provide equivalent functionality with ongoing availability.
Q: Which substitute offers the best long-term availability? A: The 74FCT16245ATPVG (IDT, Active status) and 74FCT162245ATPVCT (Cypress Semiconductor, Active status) both maintain active product status. IDT parts show higher inventory levels (1310 and 6679 units respectively), indicating stronger supply continuity.
Q: Are there output current limitations I should consider? A: The original PI74FCT16245ATV specifies 32mA (high) and 64mA (low) output current. Many substitutes reduce this to 24mA/24mA. If your system requires the full 32mA/64mA output current, select only 74FCT16245 series parts (not 74FCT162245 variants). Verify your load impedance and current requirements before substitution.
Q: What does RoHS3 compliance mean for my application? A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances requirements. If your application requires RoHS3 certified components, select from: 74FCT162245ATPACT, 74FCT162245ATPAG, 74FCT162245ATPVG, or 74FCT162245CTPACT.
Q: Can I mix different substitute parts in the same design? A: Yes, provided all selected parts meet your electrical requirements (output current, package compatibility, and operating conditions). However, maintaining consistent part sourcing from a single manufacturer simplifies supply chain management and reduces qualification complexity.
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