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Renesas ISL5123CB-T
- Part No.:
- ISL5123CB-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5123CB-T.pdf
- Description:
- IC SWITCH SPDT X 1 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,334
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Product details
Overview
ISL5123CB-T from Intersil is a low-voltage, single-supply, committed SPDT analog switch optimized for 2-to-1 multiplexer applications. It operates from +2.7V to +12V, delivers 19Ω ON-resistance at 5V, 28ns turn-on time, 20ns turn-off time, and guarantees break-before-make switching. It is used in portable audio/video routing, medical sensor front-ends, and high-speed DAC/ADC signal path selection.
For engineers reviewing the ISL5123CB-T datasheet, ISL5123CB-T pinout, ISL5123CB-T application, or ISL5123CB-T equivalent, key selection criteria include guaranteed break-before-make timing, low charge injection (≤5pC), sub-10nA leakage at 5V, SOT-23-6 package compatibility, and full specification across 3.3V/5V/12V supplies.
Technical Context
The ISL5123CB-T implements a single-pole double-throw (SPDT) topology with dedicated NO, NC, and COM terminals - unlike dual-SPST variants in the same family. Its internal CMOS switch architecture uses level-shifted TTL/CMOS-compatible control logic to drive gate terminals directly from V+ and GND rails.
Break-before-make operation is guaranteed with ≤10ns delay (tD) across temperature, preventing signal shorting during state transitions. The device achieves high-frequency performance via low OFF capacitance (8pF) and >76dB off isolation at 1MHz, enabling clean signal routing in 50Ω systems up to 300MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Committed SPDT - fixed NO/NC/COM configuration; no channel pairing ambiguity. |
| rON @ 5V | 19Ω typical - ensures minimal signal attenuation and gain error in precision analog paths. |
| tON/tOFF | 28ns / 20ns at 5V - supports multiplexing of signals up to ~10MHz without edge distortion. |
| Charge Injection | ≤5pC max - limits voltage glitch on sample-and-hold or integrator reset nodes. |
| Leakage Current | ≤10nA max at 25°C - preserves DC accuracy in high-impedance sensor interfaces. |
| Supply Range | +2.7V to +12V - enables direct interface with 3.3V microcontrollers and 12V industrial rails. |
| ESD Rating | ≥2000V HBM - meets MIL-STD-883 Method 3015.7 for robust handling in assembly environments. |
Pinout & Package
ISL5123CB-T is housed in a RoHS-compliant 6-lead SOT-23 package (P6.064 drawing), with exposed pad not connected internally. Pin 1 is marked by a dot or beveled edge; orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Digital control input | Accepts TTL/CMOS logic (0.8V/2.4V thresholds); drives internal level shifter to control switch state. |
| V+ | Positive supply rail | Single power source for analog path and logic; sets analog signal range (0V to V+). |
| GND | Ground reference | Common return for supply, logic, and analog signals; must be low-impedance for noise immunity. |
| NO | Normally open switch terminal | Connects to COM only when IN = HIGH; isolated otherwise - used for primary signal path. |
| NC | Normally closed switch terminal | Connects to COM only when IN = LOW; isolated otherwise - used for alternate signal path. |
| COM | Common analog node | Shared I/O port; routes selected input (NO or NC) to system output; bidirectional operation supported. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO-COM and NC-COM conduction, eliminating signal shorting in critical multiplexer paths. |
| Low 5pC charge injection | Minimizes voltage step errors on capacitive nodes - essential for precision sample-and-hold and integrator circuits. |
| 19Ω rON with ≤1Ω matching | Delivers consistent gain and low THD across channels; enables accurate ratiometric measurements in ADC front-ends. |
| Full 3.3V/5V/12V specification | Eliminates derating assumptions - allows direct use with mixed-voltage systems without external level translation. |
| 6-lead SOT-23 footprint | Reduces PCB area by >50% vs. 8-lead SOIC; compatible with high-density portable designs and automated placement. |
Applications
| Portable Audio Routing | Medical Sensor Multiplexing |
|---|---|
Use Scenario: Selecting between stereo line-in sources or microphone inputs in Bluetooth headsets and voice-controlled wearables. IC Role / Device Role / Timing Role: SPDT analog switch providing low-noise, low-distortion signal path selection under microcontroller GPIO control. Use Value: 19Ω rON and <5pC charge injection preserve audio fidelity; 28ns switching enables seamless source handover without audible pop. | Use Scenario: Time-division multiplexing of ECG, SpO₂, and temperature sensor outputs into a shared ADC channel in handheld patient monitors. IC Role / Device Role / Timing Role: Break-before-make SPDT switch isolating high-impedance biopotential electrodes during channel switching. Use Value: ≤10nA leakage prevents baseline drift; guaranteed tD ≤10ns avoids cross-channel coupling artifacts in diagnostic waveforms. |
| Industrial DAC Output Switching | Test Equipment Signal Path Control |
Use Scenario: Routing multiple DAC outputs to a single high-precision op-amp gain stage in programmable voltage/current sources. IC Role / Device Role / Timing Role: Low-rON, low-leakage SPDT switch selecting active DAC channel while maintaining DC accuracy. Use Value: 19Ω rON minimizes gain error; 8pF COFF/CCOM(OFF) ensures wideband settling without peaking in closed-loop configurations. | Use Scenario: Configuring signal paths in automated test equipment (ATE) for RF and baseband stimulus/response routing. IC Role / Device Role / Timing Role: High-isolation SPDT switch enabling reconfigurable 50Ω signal chains with >76dB off isolation at 1MHz. Use Value: 76dB off isolation and −105dB crosstalk suppress feedthrough in multi-channel ATE backplanes; 300MHz bandwidth supports fast pulse testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUT+T | Higher rON (45Ω @ 5V), no guaranteed break-before-make, 8-lead SOT-23 package | Lacks tD guarantee; unsuitable for zero-crossing-critical multiplexing | Select when cost sensitivity outweighs timing integrity requirements |
| TMUX1574DSGR | Lower rON (0.5Ω), 10-bit resolution support, but requires dual supply (±2.5V) or level-shifting for 3.3V logic | Not single-supply compatible; adds complexity in battery-powered systems | Select for ultra-low rON where supply architecture permits |
Compared with MAX4617EUT+T and TMUX1574DSGR, ISL5123CB-T uniquely balances guaranteed break-before-make timing, single-supply operation from 2.7V, and compact 6-lead SOT-23 packaging - making it optimal for space-constrained, low-power, timing-critical multiplexer designs.
Availability
ISL5123CB-T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered test instrumentation, and industrial DAC/ADC signal routing requiring stable component supply and long-term lifecycle support.
Supply support for ISL5123CB-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 U.S.-based semiconductor company specializing in precision analog and power management ICs, now part of Renesas Electronics.
The ISL512x family was designed specifically for low-voltage, high-speed analog signal routing in portable and battery-operated systems - emphasizing low power, small footprint, and robust signal integrity.
FAQ
What is the guaranteed break-before-make time for ISL5123CB-T?
The ISL5123CB-T guarantees a break-before-make time delay (tD) of ≤10ns across its full operating temperature range (−40°C to +85°C) when tested with RL = 300Ω and CL = 35pF. This parameter is explicitly specified in the datasheet for ISL5122 and ISL5123 variants and ensures no overlap between NO-COM and NC-COM conduction states - critical for avoiding signal shorting in multiplexer applications. The ISL5123CB-T inherits this guarantee as a committed SPDT device.
Does ISL5123CB-T support 3.3V logic control with a 12V analog supply?
Yes, ISL5123CB-T supports 3.3V logic-level control (VINH ≥ 2.4V, VINL ≤ 0.8V) even when operating from a 12V analog supply. Its input stage is TTL/CMOS compatible across the full +2.7V to +12V supply range, and the internal level shifter translates logic signals to full-rail V+/GND swing for optimal analog switch performance. No external level-shifting circuitry is required.
What is the maximum analog signal voltage range supported by ISL5123CB-T?
The ISL5123CB-T supports an analog signal range from 0V to V+, where V+ may be set between +2.7V and +12V. Signals applied to NO, NC, or COM terminals must remain within −0.3V to (V+ + 0.3V) to avoid forward-biasing internal ESD diodes. For example, with V+ = 5V, the safe analog range is 0V to 5V; exceeding this risks increased leakage or latch-up.
Is ISL5123CB-T pin-compatible with other devices in the ISL512x family?
No, ISL5123CB-T is not pin-compatible with ISL5120/5121/5122 variants. It uses a 6-lead SOT-23 package (P6.064), whereas ISL5120–5122 in SOT-23 use 8-lead versions (P8.064). The 6-pin layout (IN, V+, GND, NO, NC, COM) is unique to the ISL5123 and reflects its dedicated SPDT topology - no shared pinout exists across the family.
What is the thermal resistance (θJA) of ISL5123CB-T in its SOT-23-6 package?
The ISL5123CB-T in the 6-lead SOT-23 package has a typical junction-to-ambient thermal resistance (θJA) of 230°C/W, as specified in the Absolute Maximum Ratings table on page 4 of FN6022 Rev 8.00. This value assumes mounting on a low effective thermal conductivity test board in free air; actual θJA in production PCBs will improve with copper pour and thermal vias.
ISL5123CB-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:
- 8-SOIC
ISL5123CB-T FAQ
1.How can I place an order for ISL5123CB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5123CB-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 ISL5123CB-T reliable?
The price and inventory of ISL5123CB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5123CB-T is usually 5 days.
3.What payment methods are accepted for ISL5123CB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5123CB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5123CB-T?
ISL5123CB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5123CB-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 ISL5123CB-T?
For technical support, including ISL5123CB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5123CB-T requirements.
6.How does Aetrix verify that ISL5123CB-T is sourced from the original manufacturer or authorized distributors?
All ISL5123CB-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 ISL5123CB-T meets industry standards.
7.What is the process for return or replacement of ISL5123CB-T?
All ISL5123CB-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL5123CB-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 ISL5123CB-T part is unused and in its original packaging.
Return procedure for ISL5123CB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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