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UM2268
Union Semiconductor International Limited
IC SWITCH SPDT X 2 750MOHM 10QFN
17319 Pcs New Original In Stock
2 Circuit IC Switch 2:1 750mOhm 10-QFN (1.8x1.4)
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5.0 / 5.0
- (107 Ratings)
UM2268
Product Overview
9831791
DiGi Electronics Part Number
UM2268-DGManufacturer
Union Semiconductor International Limited
UM2268
Description
IC SWITCH SPDT X 2 750MOHM 10QFNInventory
17319 Pcs New Original In Stock
2 Circuit IC Switch 2:1 750mOhm 10-QFN (1.8x1.4)
Quantity
Minimum 1
Minimum 1
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UM2268 Technical Specifications
Category
Interface, Analog Switches, Multiplexers, Demultiplexers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Switch Circuit
SPDT
Multiplexer/Demultiplexer Circuit
2:1
Number of Circuits
2
On-State Resistance (Max)
750mOhm
Channel-to-Channel Matching (ΔRon)
40mOhm
Voltage - Supply, Single (V+)
1.8V ~ 4.4V
Voltage - Supply, Dual (V±)
-
Switch Time (Ton, Toff) (Max)
88ns, 16ns
-3db Bandwidth
80MHz
Charge Injection
4pC
Channel Capacitance (CS(off), CD(off))
-
Current - Leakage (IS(off)) (Max)
1µA
Crosstalk
-90dB @ 1MHz
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-UFQFN
Supplier Device Package
10-QFN (1.8x1.4)
Datasheet & Documents
Datasheets
Download UM2268 Product Specification (PDF)
HTML Datasheet
UM2268-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
HTSUS
8542.39.0001
Additional Information
Other Names
3351-UM2268TR
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Eco-aware packaging and remarkably quick shipping made my shopping delightful.
Dec 02, 2025
Package was solid and secure, ensuring no damage during transit.
Dec 02, 2025
Timely delivery and excellent after-sales support make DiGi Electronics my preferred service provider.
Dec 02, 2025
I appreciate how DiGi Electronics prioritizes parcel integrity with sturdy packaging materials.
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Frequently Asked Questions (FAQ)
Can the UM2268 be used to replace an analog switch in a high-impedance sensor signal path without introducing significant measurement error?
Yes, the UM2268 is suitable for high-impedance sensor applications due to its low on-state resistance (750mΩ max) and minimal charge injection (4pC), which reduces signal distortion during switching. However, its leakage current of up to 1µA can become problematic in ultra-high-impedance circuits (e.g., pH probes or piezoelectric sensors), where it may introduce offset errors. For such cases, consider using a lower-leakage alternative like the TS5A23157 (0.5nA typical leakage) or add guard rings and shielding to mitigate parasitic effects. Always validate performance in your specific signal chain.
Is the UM2268 a drop-in replacement for the NX3L1T3157 in a 2:1 multiplexer design operating at 3.3V?
While both the UM2268 and NX3L1T3157 are SPDT analog switches in similar QFN packages and support 1.8V–4.4V operation, they are not fully pin-compatible due to differing pinouts and enable logic. The NX3L1T3157 includes an active-low enable pin and lower Ron (5Ω vs. 0.75Ω), but the UM2268 offers better channel matching (40mΩ ΔRon) and faster turn-off time (16ns). If your design relies on precise timing or matched signal paths, the UM2268 may offer performance benefits—but you must redesign the PCB layout and verify control logic compatibility before substitution.
What are the risks of using the UM2268 in a battery-powered IoT device with frequent switching cycles?
The UM2268’s fast switching times (88ns on, 16ns off) and low charge injection make it attractive for power-sensitive IoT systems, but frequent switching increases dynamic power consumption due to capacitive loading and internal charge pumping. Additionally, although MSL 3 allows for 168 hours of floor life, repeated thermal cycling in compact designs may stress the 10-QFN (1.8x1.4mm) package, risking solder joint fatigue. To mitigate this, minimize load capacitance, use controlled impedance traces, and consider underfill if the device undergoes mechanical vibration. Monitor long-term reliability through accelerated life testing under expected duty cycles.
How does the UM2268 perform in high-frequency audio routing applications above 20kHz, and what layout precautions are needed?
With a -3dB bandwidth of 80MHz and crosstalk of -90dB @ 1MHz, the UM2268 is well-suited for high-fidelity audio routing, including ultrasonic frequencies used in some MEMS microphone arrays. However, parasitic inductance and capacitance in poor PCB layouts can degrade performance—especially near the tiny 10-QFN footprint. Use short, symmetric traces for differential signals, ground planes beneath the device, and avoid routing high-speed digital lines adjacent to analog paths. Also, ensure supply decoupling with a 100nF ceramic capacitor placed within 1mm of the V+ pin to suppress high-frequency noise and maintain signal integrity.
Can the UM2268 safely handle hot-plug events or transient voltage spikes in industrial sensor interfaces?
The UM2268 lacks built-in ESD protection beyond standard handling levels and has no specified surge tolerance, making it vulnerable during hot-plug events or inductive load transients common in industrial environments. Although it operates from -40°C to 85°C, voltage spikes exceeding the 4.4V absolute maximum can damage the device. For robust industrial use, add external TVS diodes on signal lines and series current-limiting resistors (e.g., 100Ω) at the inputs. Alternatively, consider hardened alternatives like the ADG5412 (with ±15kV ESD protection) if the application involves frequent connector mating or harsh electrical environments.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
UM2268 CAD Models
Union Semiconductor International Limited UM2268 PCB symbols & footprints
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