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74ACT16245MTDX Equivalent & Substitute Parts
Part Overview
The 74ACT16245MTDX is a non-inverting transceiver IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. This 48-TSSOP surface mount logic component 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 classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74ACT16245MTDX |
| Manufacturer | onsemi |
| Series | 74ACT |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-TFSOP (0.240", 6.10mm Width) |
| Supplier Device Package | 48-TSSOP |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Substitute Part Grouping Explanation
Substitution of the 74ACT16245MTDX is determined by strict equivalence across the following critical parameters:
- Logic Type: Transceiver, Non-Inverting
- Number of Elements: 2
- Number of Bits per Element: 8
- Output Type: 3-State
- Current - Output High, Low: 24mA, 24mA
- Voltage - Supply: 4.5V ~ 5.5V
- Operating Temperature: -40°C ~ 85°C (TA)
- Mounting Type: Surface Mount
Substitute parts are grouped into three categories based on package compatibility and manufacturer status:
Direct Manufacturer Equivalent (Package-Identical): 74ACT16245DGGR maintains identical electrical specifications and 48-TFSOP packaging, enabling direct board-level substitution.
Similar Manufacturer Equivalents (Package Variant): 74ACT16245DL and 74ACT16245DLR provide identical electrical performance but use 48-BSSOP packaging (0.295", 7.50mm Width), requiring PCB footprint verification before implementation.
Parametric Equivalents (Series Variant): 74FCT162245ATPACT, 74FCT162245CTPACT, 74FCT162245CTPAG8, 74FCT162H245ATPACT, 74FCT162H245CTPACT, and CY74FCT162245TPACT maintain all critical electrical parameters but belong to the 74FCT series, representing alternative logic families with identical functional performance.
Parameter Comparison
| Parameter | 74ACT16245MTDX (Main) | 74ACT16245DGGR | 74ACT16245DL | 74ACT16245DLR | 74FCT162245ATPACT | 74FCT162245CTPACT | 74FCT162245CTPAG8 | 74FCT162H245ATPACT | 74FCT162H245CTPACT | CY74FCT162245TPACT |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | IDT | Texas Instruments | Texas Instruments | Texas Instruments |
| Series | 74ACT | 74ACT | 74ACT | 74ACT | 74FCT | 74FCT | 74FCT | 74FCT | 74FCT | 74FCT |
| Logic Type | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting |
| Number of Elements | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High, Low | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -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 | -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 | Surface Mount |
| Package / Case | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) | 48-BSSOP (0.295", 7.50mm) | 48-BSSOP (0.295", 7.50mm) | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) | 48-TFSOP (0.240", 6.10mm) |
| Product Status | Obsolete | Active | Last Time Buy | Active | Obsolete | Obsolete | Active | Obsolete | Obsolete | Obsolete |
| RoHS Status | Not Specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Not Specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 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 | Not Specified | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
For Direct Substitution (No PCB Redesign Required):
74ACT16245DGGR is the primary recommended substitute. Manufactured by Texas Instruments with Active product status, it maintains identical 48-TFSOP packaging and all electrical specifications. ROHS3 compliance and unlimited MSL rating provide regulatory alignment for modern manufacturing environments.
For Package-Compatible Substitution (PCB Footprint Verification Required):
74ACT16245DL and 74ACT16245DLR provide electrical equivalence but employ 48-BSSOP packaging with different physical dimensions (0.295" vs. 0.240" width). PCB layout verification is necessary to confirm footprint compatibility before implementation. 74ACT16245DLR offers Active status and superior long-term availability compared to 74ACT16245DL (Last Time Buy).
For Series-Level Substitution (74FCT Family):
74FCT162245CTPAG8 (IDT, Active status) represents the optimal parametric equivalent within the 74FCT series, offering continued availability and active manufacturing support. Texas Instruments 74FCT variants (74FCT162245ATPACT, 74FCT162245CTPACT, 74FCT162H245ATPACT, 74FCT162H245CTPACT, CY74FCT162245TPACT) maintain full electrical compatibility but carry Obsolete status, limiting their suitability for new procurement strategies.
All substitute options maintain identical supply voltage range (4.5V ~ 5.5V), output current specifications (24mA), operating temperature range (-40°C ~ 85°C), and functional logic architecture, ensuring transparent system-level compatibility.
Frequently Asked Questions (FAQ)
Q: Can 74ACT16245DGGR be used as a direct replacement for 74ACT16245MTDX without PCB modifications?
A: Yes. 74ACT16245DGGR maintains identical 48-TFSOP packaging, electrical specifications, and functional performance. No PCB redesign is required for direct board-level substitution.
Q: What is the primary difference between 74ACT16245DL and 74ACT16245DLR?
A: Both parts use 48-BSSOP packaging (0.295", 7.50mm width) instead of the original 48-TFSOP. The key difference is product status: 74ACT16245DLR is Active with ongoing manufacturing support, while 74ACT16245DL is Last Time Buy with limited future availability. Electrical specifications are identical.
Q: Are 74FCT series parts (74FCT162245ATPACT, etc.) functionally equivalent to the 74ACT16245MTDX?
A: Yes. All 74FCT variants maintain identical electrical parameters including supply voltage (4.5V ~ 5.5V), output current (24mA), operating temperature (-40°C ~ 85°C), and logic architecture. The 74FCT series represents an alternative logic family with equivalent performance characteristics.
Q: Which substitute offers the best long-term availability?
A: 74ACT16245DGGR (Texas Instruments, Active status) and 74FCT162245CTPAG8 (IDT, Active status) both carry Active product status, indicating ongoing manufacturing and procurement support. 74ACT16245DLR (Active) is also suitable for extended availability within the 74ACT family.
Q: Do all substitute parts meet RoHS3 compliance?
A: Most substitutes are ROHS3 compliant. 74FCT162245CTPAG8 does not specify RoHS status in available documentation. Verify RoHS compliance requirements with your specific application before final part selection.
Q: Can 74ACT16245DL or 74ACT16245DLR be used if my PCB footprint is designed for 48-TFSOP packaging?
A: No. These parts use 48-BSSOP packaging with different physical dimensions (0.295" width vs. 0.240" for TFSOP). PCB footprint redesign is required. Consult package datasheets to confirm mechanical compatibility before implementation.
Q: What is the MSL rating for all substitute parts?
A: All substitute parts, including the original 74ACT16245MTDX, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.
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