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NLAS4684FCT1 Equivalent & Substitute Parts
Part Overview
The NLAS4684FCT1 is a 2-circuit IC switch with 2:1 multiplexer/demultiplexer functionality, manufactured by onsemi. It features an 800mOhm on-state resistance and operates across a 1.8V to 5.5V supply voltage range. The device is housed in a 10-Microbump package (10-UFBGA, FCBGA) and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for design continuity and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPDT |
| Multiplexer/Demultiplexer Configuration | 2:1 |
| Number of Circuits | 2 |
| On-State Resistance (Max) | 800mOhm |
| Channel-to-Channel Matching (ΔRon) | 60mOhm |
| Supply Voltage Range | 1.8V ~ 5.5V |
| Switch Time (Ton, Toff) Max | 30ns, 30ns |
| -3dB Bandwidth | 9.5MHz |
| Charge Injection | 15pC |
| Channel Capacitance (CS(off), CD(off)) | 102pF, 104pF |
| Leakage Current (IS(off)) Max | 1µA |
| Crosstalk | -83dB @ 100kHz |
| Operating Temperature Range | -55°C ~ 125°C |
| Package Type | 10-UFBGA, FCBGA (10-Microbump) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the NLAS4684FCT1 is determined by strict equivalence across the following critical parameters:
Switch topology (SPDT 2:1 multiplexer/demultiplexer with 2 circuits), on-state resistance specification (800mOhm maximum), channel-to-channel matching tolerance (60mOhm), supply voltage range (1.8V ~ 5.5V), switching performance (30ns maximum for both Ton and Toff), bandwidth (-3dB at 9.5MHz), charge injection (15pC), channel capacitance values (102pF and 104pF), leakage current (1µA maximum), crosstalk performance (-83dB @ 100kHz), operating temperature range (-55°C ~ 125°C), and package configuration (10-Microbump in 10-UFBGA/FCBGA form factor).
The NLAS4684FCTCG meets all these electrical and mechanical parameters identically, making it a direct parametric equivalent. The primary distinction lies in packaging format (Cut Tape versus unspecified for the main part) and compliance certifications.
Parameter Comparison
| Parameter | NLAS4684FCT1 | NLAS4684FCTCG |
|---|---|---|
| Manufacturer | onsemi | onsemi |
| Switch Circuit | SPDT | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| Number of Circuits | 2 | 2 |
| On-State Resistance (Max) | 800mOhm | 800mOhm |
| Channel-to-Channel Matching (ΔRon) | 60mOhm | 60mOhm |
| Supply Voltage Range | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Switch Time (Ton, Toff) Max | 30ns, 30ns | 30ns, 30ns |
| -3dB Bandwidth | 9.5MHz | 9.5MHz |
| Charge Injection | 15pC | 15pC |
| Channel Capacitance (CS(off), CD(off)) | 102pF, 104pF | 102pF, 104pF |
| Leakage Current (IS(off)) Max | 1µA | 1µA |
| Crosstalk | -83dB @ 100kHz | -83dB @ 100kHz |
| Operating Temperature Range | -55°C ~ 125°C | -55°C ~ 125°C |
| Package / Case | 10-UFBGA, FCBGA | 10-UFBGA, FCBGA |
| Supplier Device Package | 10-Microbump | 10-Microbump |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Obsolete |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The NLAS4684FCTCG is a direct parametric equivalent to the NLAS4684FCT1 across all electrical and mechanical specifications. Both devices are classified as obsolete products from onsemi.
A key distinction exists in regulatory compliance: the NLAS4684FCTCG carries ROHS3 compliance certification, whereas the NLAS4684FCT1 is RoHS non-compliant. For applications subject to RoHS directives or environmental regulations, the NLAS4684FCTCG is the appropriate selection. Both devices maintain identical MSL ratings (1, Unlimited) and REACH status (REACH Unaffected).
Packaging format differs between the two parts: the NLAS4684FCTCG is supplied in Cut Tape (CT) format. This distinction affects procurement and assembly workflows but does not alter electrical or mechanical compatibility.
Frequently Asked Questions (FAQ)
Q: Are the NLAS4684FCT1 and NLAS4684FCTCG electrically identical?
A: Yes. Both devices share identical electrical specifications across all parameters including on-state resistance, switching time, bandwidth, charge injection, channel capacitance, leakage current, and crosstalk performance.
Q: What is the primary difference between these two parts?
A: The NLAS4684FCTCG is ROHS3 compliant, while the NLAS4684FCT1 is RoHS non-compliant. Additionally, the NLAS4684FCTCG is supplied in Cut Tape packaging format.
Q: Can I use the NLAS4684FCTCG as a direct replacement for the NLAS4684FCT1?
A: Yes, provided your application does not have specific packaging format requirements. The electrical and mechanical specifications are identical, and both devices use the same 10-Microbump package configuration.
Q: Are both parts still in production?
A: No. Both the NLAS4684FCT1 and NLAS4684FCTCG are classified as obsolete products.
Q: What does the 10-Microbump package specification mean?
A: The 10-Microbump designation refers to the 10-UFBGA/FCBGA package format with microbump interconnect technology. This is a surface-mount package suitable for high-density applications.
Q: Do both parts have the same moisture sensitivity rating?
A: Yes. Both devices carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.
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