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CY74FCT162841CTPVC Equivalent & Substitute Parts
Part Overview
The CY74FCT162841CTPVC is a 20-bit bus interface D-Type transparent latch with dual 10:10 channel configuration and tri-state output capability. Manufactured by Texas Instruments in the 74FCT series, this component operates at 4.5V to 5.5V supply voltage with 1.5ns propagation delay. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CY74FCT162841CTPVC |
| Manufacturer | Texas Instruments |
| Logic Type | D-Type Transparent Latch |
| Circuit Configuration | 10:10 (2 Independent Circuits) |
| Output Type | Tri-State |
| Package / Case | 56-BSSOP (0.295", 7.50mm Width) |
| Voltage - Supply | 4.5V ~ 5.5V |
| Delay Time - Propagation | 1.5ns |
| Current - Output High, Low | 24mA, 24mA |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the CY74FCT162841CTPVC is determined by strict alignment of the following critical parameters:
Functional Equivalence Requirements:
- Logic type: D-Type transparent latch
- Circuit configuration: 10:10 dual channel
- Output type: Tri-state
- Package: 56-BSSOP surface mount
Electrical Compatibility Criteria:
- Pin count and pinout compatibility (56-pin SSOP)
- Output drive capability: 24mA minimum for both high and low states
- Propagation delay: Equal to or faster than 1.5ns
- Operating temperature range: Minimum -40°C to +85°C
Compliance Requirements:
- RoHS3 compliance
- REACH unaffected status
- ECCN EAR99 classification
The SN74ALVCH16841DLR meets all functional and package requirements while offering improved electrical performance characteristics and active product status.
Parameter Comparison
| Parameter | CY74FCT162841CTPVC | SN74ALVCH16841DLR | Compatibility |
|---|---|---|---|
| Logic Type | D-Type Transparent Latch | D-Type Transparent Latch | Equivalent |
| Circuit Configuration | 10:10 (2 Channels) | 10:10 (2 Channels) | Equivalent |
| Output Type | Tri-State | Tri-State | Equivalent |
| Package / Case | 56-BSSOP (0.295", 7.50mm) | 56-BSSOP (0.295", 7.50mm) | Equivalent |
| Voltage - Supply | 4.5V ~ 5.5V | 1.65V ~ 3.6V | Substitute operates at lower voltage |
| Delay Time - Propagation | 1.5ns | 1ns | Substitute is faster |
| Current - Output High, Low | 24mA, 24mA | 24mA, 24mA | Equivalent |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | Equivalent |
| Mounting Type | Surface Mount | Surface Mount | Equivalent |
| Product Status | Obsolete | Active | Substitute is actively manufactured |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
Engineering Selection Recommendations
The SN74ALVCH16841DLR is the direct functional equivalent for the obsolete CY74FCT162841CTPVC. Both components share identical pinout, package geometry, and core logic functionality. The substitute offers the following advantages:
Product Lifecycle Status: The SN74ALVCH16841DLR maintains active manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.
Compliance Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component substitution.
Performance Characteristics: The substitute delivers faster propagation delay (1ns versus 1.5ns) and operates across a lower supply voltage range (1.65V to 3.6V). Systems designed for the original 4.5V to 5.5V supply voltage remain fully compatible, as the substitute operates within this range.
Output Drive Capability: Identical output current specifications (24mA high and low) ensure equivalent bus driving capability and load handling characteristics.
Frequently Asked Questions (FAQ)
Q: Can the SN74ALVCH16841DLR directly replace the CY74FCT162841CTPVC without PCB modifications?
A: Yes. Both components use identical 56-pin SSOP package geometry and pinout configuration. Direct socket substitution is possible without PCB layout changes.
Q: What is the primary reason for substitution?
A: The CY74FCT162841CTPVC is classified as obsolete. The SN74ALVCH16841DLR provides functional equivalence with active manufacturing status and improved availability.
Q: Are there voltage supply considerations for substitution?
A: The substitute operates at 1.65V to 3.6V supply voltage, which overlaps with the original part's 4.5V to 5.5V range. Systems operating at 4.5V to 5.5V will function correctly with the substitute. Systems requiring operation below 4.5V must use the substitute exclusively.
Q: How do propagation delay differences affect system performance?
A: The substitute's faster propagation delay (1ns versus 1.5ns) improves timing margins. No system redesign is required; the substitute is a performance enhancement in this parameter.
Q: Are output drive capabilities identical?
A: Yes. Both parts deliver 24mA output current for high and low states, maintaining equivalent bus driving capability and load handling.
Q: What compliance certifications apply to both parts?
A: Both components are ROHS3 compliant and REACH unaffected, satisfying equivalent regulatory requirements for component substitution.
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