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74FCT162543CTPACT Equivalent & Substitute Parts
Part Overview
The 74FCT162543CTPACT is a non-inverting transceiver logic IC with 2 elements, 8 bits per element, and 3-state output capability. Manufactured by Texas Instruments in a 56-TSSOP package, this component operates across a 4.5V to 5.5V supply voltage range with output drive capability of 24mA for both high and low states. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74FCT162543CTPACT |
| Manufacturer | Texas Instruments |
| Series | 74FCT |
| 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) |
| Package / Case | 56-TFSOP (0.240", 6.10mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 74FCT162543CTPACT is determined by the following critical parameters:
Functional Equivalence: Logic type (Transceiver, Non-Inverting), number of elements (2), bits per element (8), and output type (3-State) must remain identical.
Electrical Compatibility: Supply voltage range, output current drive capability (24mA), and operating temperature range (-40°C ~ 85°C) define the electrical operating envelope.
Physical Compatibility: Package type (56-TFSOP) and mounting method (Surface Mount) ensure mechanical fit and assembly compatibility.
Compliance Requirements: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental standards.
Substitute parts are grouped into two categories:
-
Manufacturer Recommended Substitute (Active Product): SN74ALVCH16543DGGR operates at a lower voltage range (1.65V ~ 3.6V) while maintaining identical functional and package specifications. This represents the preferred upgrade path due to active product status.
-
Parametric Equivalents (Voltage-Compatible): 74ACT16543DGGR, 74FCT162543ATPACT, 74FCT162646CTPACT, and 74FCT162652CTPACT maintain the 4.5V ~ 5.5V supply voltage range and are functionally identical to the original part.
Parameter Comparison
| Parameter | 74FCT162543CTPACT | SN74ALVCH16543DGGR | 74ACT16543DGGR | 74FCT162543ATPACT | 74FCT162646CTPACT | 74FCT162652CTPACT |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Cypress Semiconductor Corp | Texas Instruments |
| Series | 74FCT | 74ALVCH | 74ACT | 74FCT | 74FCT | 74FCT |
| Logic Type | 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 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 |
| Output Type | 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 |
| Voltage - Supply | 4.5V ~ 5.5V | 1.65V ~ 3.6V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -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) |
| Package / Case | 56-TFSOP (0.240", 6.10mm Width) | 56-TFSOP (0.240", 6.10mm Width) | 56-TFSOP (0.240", 6.10mm Width) | 56-TFSOP (0.240", 6.10mm Width) | 56-TFSOP (0.240", 6.10mm Width) | 56-TFSOP (0.240", 6.10mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Obsolete | Active | Obsolete |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Not specified | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | Not specified | 1 (Unlimited) |
Engineering Selection Recommendations
For New Designs: SN74ALVCH16543DGGR is the recommended substitute. This part maintains active product status with full ROHS3 compliance and MSL rating 1. The lower supply voltage range (1.65V ~ 3.6V) provides enhanced flexibility for modern low-power applications while preserving all functional and electrical parameters of the original 74FCT162543CTPACT.
For Direct Replacement in Existing Systems: 74ACT16543DGGR or 74FCT162543ATPACT provide parametric equivalence with identical 4.5V ~ 5.5V supply voltage operation. Both maintain the same functional specifications, output drive capability, and temperature range. 74ACT16543DGGR holds active product status, while 74FCT162543ATPACT is obsolete but remains available in inventory.
For Voltage-Compatible Applications: 74FCT162646CTPACT and 74FCT162652CTPACT are functionally equivalent alternatives within the 74FCT series. 74FCT162646CTPACT is available from Cypress Semiconductor Corp with active product status. Both parts maintain identical electrical and mechanical specifications.
Compliance Consideration: All recommended substitutes maintain ROHS3 compliance and MSL rating 1, ensuring compatibility with current manufacturing and environmental standards.
Frequently Asked Questions (FAQ)
Q: Can SN74ALVCH16543DGGR replace 74FCT162543CTPACT in a 5V system?
A: No. SN74ALVCH16543DGGR operates at 1.65V ~ 3.6V supply voltage, which is incompatible with 5V systems. For 5V applications, use 74ACT16543DGGR, 74FCT162543ATPACT, 74FCT162646CTPACT, or 74FCT162652CTPACT.
Q: What is the primary reason for substitution?
A: The 74FCT162543CTPACT is classified as obsolete. Substitute parts ensure continued availability and long-term supply chain reliability for both new designs and legacy system support.
Q: Are all substitute parts pin-compatible?
A: Yes. All substitute parts use the 56-TFSOP package with identical pinout, ensuring direct mechanical and electrical compatibility without PCB redesign.
Q: Which substitute has the best long-term availability?
A: SN74ALVCH16543DGGR and 74FCT162646CTPACT both hold active product status, providing the strongest long-term availability and supply chain support.
Q: Do all substitutes meet RoHS3 compliance?
A: SN74ALVCH16543DGGR, 74ACT16543DGGR, 74FCT162543ATPACT, and 74FCT162652CTPACT are confirmed ROHS3 compliant. 74FCT162646CTPACT RoHS status is not specified in available documentation.
Q: What is the output drive capability across all parts?
A: All substitute parts maintain 24mA output drive for both high and low states, identical to the original 74FCT162543CTPACT.
Q: Can substitutes operate across the full -40°C ~ 85°C temperature range?
A: Yes. All substitute parts maintain the identical operating temperature range of -40°C ~ 85°C (TA).
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