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Renesas ISL5123IH-T
- Part No.:
- ISL5123IH-T
- Manufacturer:
- Renesas
- Package:
- SOT-23-6
- Datasheet:
-
ISL5123IH-T.pdf
- Description:
- IC SWITCH SPDT X 1 20OHM 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
ISL5123IH-T from Intersil is a low-voltage, single-supply, committed SPDT analog switch designed for 2-to-1 multiplexer applications. It operates from +2.7V to +12V, delivers 19Ω ON-resistance at 5V, 28ns turn-on time, and guarantees break-before-make switching. It is used in portable audio/video routing, medical sensor signal selection, and high-speed DAC/ADC channel switching.
For engineers reviewing the ISL5123IH-T datasheet, ISL5123IH-T pinout, ISL5123IH-T application, or ISL5123IH-T equivalent, key selection criteria include guaranteed break-before-make timing (≤10ns), 6-pin SOT-23 package footprint, 10nA max leakage at 5V, 28ns/20ns tON/tOFF performance, and compatibility with TTL/CMOS logic across 3.3V/5V/12V supplies.
Technical Context
The ISL5123IH-T implements a CMOS-based SPDT switch architecture with integrated level shifters enabling TTL/CMOS-compatible digital control across its full 2.7V–12V supply range. Its internal structure uses matched P- and N-channel transistors to achieve low rON and tight rON matching (≤1Ω).
Break-before-make timing is hardware-guaranteed via internal delay circuitry (tD ≤10ns), preventing signal shorting during state transitions. Charge injection is minimized to 5pC max, ensuring minimal voltage glitch in precision sample-and-hold or integrator reset circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +12V single supply - supports direct integration into 3.3V, 5V, and 12V systems without level-shifting circuitry |
| rON (5V) | 19Ω typical - enables <10mV drop at 1mA signal current, preserving accuracy in precision analog paths |
| tON / tOFF | 28ns / 20ns at 5V - supports >20MHz multiplexing rates in high-speed data acquisition |
| Break-before-make tD | ≤10ns over full temp range - eliminates cross-conduction risk in critical signal routing |
| Leakage (ICOM(OFF)) | ≤5nA max at 5.5V - ensures <1µV error in 1GΩ feedback networks at room temperature |
| Charge Injection | 5pC max - limits output voltage glitch to <5mV on 1nF hold capacitors |
| Off Isolation | 76dB at 1MHz - suppresses crosstalk between channels in multi-signal systems |
Pinout & Package
ISL5123IH-T is housed in a RoHS-compliant 6-lead SOT-23 package (P6.064 drawing), optimized for space-constrained portable designs. Pin 1 = IN, Pin 2 = V+, Pin 3 = GND, Pin 4 = NO, Pin 5 = NC, Pin 6 = COM.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Digital control input | Accepts TTL/CMOS logic; switches state at ≤0.8V (low) / ≥2.4V (high) across full supply range |
| V+ | Positive power rail | Supplies both analog switch core and internal level shifter; sets analog signal ceiling (0V to V+) |
| GND | Ground reference | Common return for power, logic, and analog paths; must be low-impedance to minimize noise coupling |
| NO | Normally open switch terminal | Connects to COM only when IN = high; isolated otherwise - used for primary signal path selection |
| NC | Normally closed switch terminal | Connects to COM only when IN = low; isolated otherwise - provides complementary path for SPDT operation |
| COM | Common analog node | Single-pole connection point; routes selected signal (NO or NC) to downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Hardware-enforced tD ≤10ns prevents momentary shorting between NO and NC during switching - critical for protecting sensitive sources/sinks |
| Low 5V rON with tight matching | 19Ω typical rON and ≤1Ω channel-to-channel ΔrON ensure balanced gain and minimal THD in differential or dual-path applications |
| Ultra-low leakage | ≤5nA max COM OFF leakage preserves DC accuracy in high-impedance sensor interfaces and integrator reset nodes |
| 6-pin SOT-23 footprint | Reduces PCB area by >50% vs. 8-pin SOIC variants - ideal for wearables, hearing aids, and compact medical devices |
| Full 3.3V/5V/12V specification | Characterized across all three supply rails with no derating - eliminates need for design-specific validation at each voltage |
Applications
| Portable Audio Routing | Medical Sensor Multiplexing |
|---|---|
Use Scenario: Selecting between microphone and line-in inputs in Bluetooth headsets or voice-controlled wearables. IC Role / Device Role / Timing Role: Committed SPDT analog switch providing hardware-guaranteed break-before-make to prevent pop/click artifacts during source switching. Use Value: 28ns switching enables seamless transitions within audio frame boundaries; 19Ω rON preserves SNR in 20kΩ audio paths. | Use Scenario: Time-division multiplexing of ECG, SpO₂, and temperature sensor outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Low-leakage SPDT switch routing biopotential signals to a shared ADC front-end while maintaining DC integrity. Use Value: ≤5nA leakage avoids baseline drift in µV-level ECG measurements; 6-pin SOT-23 saves board space in compact enclosures. |
| DAC Output Channel Selection | High-Speed Test Equipment Mux |
Use Scenario: Switching between multiple DAC outputs driving different actuator channels in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Precision SPDT switch selecting calibrated analog outputs with minimal gain error and glitch energy. Use Value: 19Ω rON and ≤1Ω matching ensure <0.05% gain mismatch across channels; 5pC charge injection minimizes settling time. | Use Scenario: Signal path routing in automated test equipment requiring sub-100ns channel switching for parallel DUT testing. IC Role / Device Role / Timing Role: High-speed SPDT switch enabling rapid reconfiguration of stimulus/response paths in ATE backplanes. Use Value: 28ns/20ns tON/tOFF supports >10MSPS multiplexing; 76dB off isolation prevents measurement contamination between test channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4677EUT+T | 12Ω rON at 5V, 30ns tON, 6-pin SOT-23, but no guaranteed break-before-make | Suitable for non-critical mux where cross-conduction risk is mitigated externally | Select when lower rON outweighs need for hardware BbM; requires external timing control or RC delay |
| TMUX6219DCKR | 3.5Ω rON at 5V, 105ns tON, 6-pin SC-70, ±16.5V dual-supply capable, no BbM guarantee | Better for wide-VIN industrial sensors; unsuitable for battery-powered 2.7V systems | Choose for ultra-low rON and high-voltage tolerance; not drop-in due to supply architecture and timing behavior |
Compared with MAX4677EUT+T and TMUX6219DCKR, the ISL5123IH-T uniquely delivers guaranteed break-before-make timing in a 2.7V–12V single-supply 6-pin SOT-23 package - making it the only option for space-constrained, safety-critical SPDT routing where cross-conduction must be eliminated by silicon design, not system-level workarounds.
Availability
ISL5123IH-T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered audio accessories, industrial DAC/ADC interface modules, and automated test equipment requiring stable component supply and long-term lifecycle support.
Supply support for ISL5123IH-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil Corporation is a provider of precision analog and power management ICs, now part of Renesas Electronics, with expertise in high-performance signal conditioning and low-power interface solutions.
The ISL5123IH-T belongs to Intersil's low-voltage analog switch family, engineered specifically for battery-powered portable equipment requiring minimal power, tiny footprint, and guaranteed signal integrity during switching transitions.
FAQ
What is the guaranteed break-before-make time for ISL5123IH-T?
The ISL5123IH-T guarantees a break-before-make time delay (tD) of ≤10ns across its full operating temperature range (-40°C to +85°C). This parameter is hardware-enforced and specified in the datasheet under Electrical Specifications – 5V Supply, ensuring no overlap between NO and NC conduction states during switching - a critical feature for protecting sensitive analog sources and sinks in the ISL5123IH-T application.
Does ISL5123IH-T support 3.3V logic control with a 5V analog supply?
Yes, the ISL5123IH-T supports TTL/CMOS-compatible logic inputs with VIH ≥2.4V and VIL ≤0.8V across its entire +2.7V to +12V supply range. When operated at V+ = 5V, a 3.3V logic-high signal fully satisfies the 2.4V minimum VIH requirement, enabling direct interfacing with 3.3V microcontrollers without level shifters - a key advantage confirmed in the ISL5123IH-T datasheet's Digital Input Characteristics table.
What is the maximum analog signal voltage range supported by ISL5123IH-T?
The ISL5123IH-T supports an analog signal range from 0V to V+, meaning the maximum allowable voltage at NO, NC, or COM pins equals the applied V+ supply voltage. For example, with V+ = 5V, the analog signal must stay within 0V to 5V; exceeding this range forward-biases internal ESD diodes. This rail-to-rail capability is explicitly stated in the Analog Signal Range (VANALOG) specification on page 4 of the ISL5123IH-T datasheet.
Can ISL5123IH-T be used in high-frequency RF signal paths?
The ISL5123IH-T is characterized for high-frequency analog performance up to 300MHz, with flat gain response and >76dB off-isolation at 1MHz. While not a dedicated RF switch, its 50Ω system performance (per Figure 16) and low 28pF total capacitance make it suitable for IF routing and sub-100MHz video/audio switching. However, for >500MHz RF applications, dedicated GaAs or SOI switches are recommended - a distinction clarified in the ISL5123IH-T Typical Performance Curves section.
Is ISL5123IH-T pin-compatible with other devices in the ISL512x family?
No, the ISL5123IH-T uses a 6-pin SOT-23 package (P6.064), while ISL5120/5121/5122 variants use 8-pin SOT-23 or SOIC packages. The pin count, layout, and terminal assignments differ fundamentally: ISL5123IH-T has dedicated NO, NC, and COM pins in a 6-pin configuration, whereas the dual-switch variants require separate control inputs and share no pin mapping. This physical incompatibility is documented in the Ordering Information and Pin Configurations sections of the ISL5123IH-T datasheet.
ISL5123IH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 20Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 35ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -105dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SOT
ISL5123IH-T FAQ
1.How can I place an order for ISL5123IH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5123IH-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL5123IH-T reliable?
The price and inventory of ISL5123IH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5123IH-T is usually 5 days.
3.What payment methods are accepted for ISL5123IH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5123IH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5123IH-T?
ISL5123IH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5123IH-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL5123IH-T?
For technical support, including ISL5123IH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5123IH-T requirements.
6.How does Aetrix verify that ISL5123IH-T is sourced from the original manufacturer or authorized distributors?
All ISL5123IH-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL5123IH-T meets industry standards.
7.What is the process for return or replacement of ISL5123IH-T?
All ISL5123IH-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL5123IH-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL5123IH-T part is unused and in its original packaging.
Return procedure for ISL5123IH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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