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Renesas ISL5123CBZ-T
- Part No.:
- ISL5123CBZ-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5123CBZ-T.pdf
- Description:
- IC SWITCH SPDT X 1 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,715
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Product details
Overview
ISL5123CBZ-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-ideal for precision signal routing in portable audio/video systems.
For engineers reviewing the ISL5123CBZ-T datasheet, ISL5123CBZ-T pinout, ISL5123CBZ-T application, or ISL5123CBZ-T equivalent, key selection criteria include guaranteed break-before-make timing, 19Ω rON at 5V, 8-pin SOIC package compatibility, low 5µW power consumption, and support for battery-powered handheld equipment requiring high off-isolation (>76dB) and minimal charge injection (≤5pC).
Technical Context
The ISL5123CBZ-T implements a fully CMOS-based SPDT architecture with integrated level-shifting logic, enabling TTL/CMOS-compatible control across its full 2.7V–12V supply range. Its internal structure ensures bidirectional analog signal flow with matched channel characteristics and guaranteed break-before-make timing (3ns–10ns).
It features ESD protection exceeding 2000V per MIL-STD-883 Method 3015.7, reverse-biased ESD diodes on all analog pins, and operates only with unipolar supplies-no bipolar operation supported. Input thresholds are fixed at VINL ≤ 0.8V and VINH ≥ 2.4V (up to 11V supply); at 12V, VINH rises to 4V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Committed SPDT - single-pole double-throw with fixed NO/NC/COM topology, no dual-SPST reconfiguration. |
| rON @ 5V | 19Ω typical - enables low insertion loss and minimal signal distortion in audio, video, and ADC/DAC interface paths. |
| tON / tOFF | 28ns / 20ns at 5V - supports high-speed multiplexing up to ~10MHz without significant edge degradation. |
| Break-before-make | Guaranteed 3–10ns delay - prevents momentary shorting between signal sources during switching transitions. |
| Charge Injection | ≤5pC max - minimizes voltage glitch on sample-and-hold or integrator reset nodes. |
| Off Isolation | ≥76dB at 1MHz - suppresses crosstalk and feedthrough in multi-channel analog routing. |
| Supply Range | +2.7V to +12V - supports direct integration into 3.3V, 5V, and 12V systems without level translation. |
Pinout & Package
ISL5123CBZ-T is housed in an 8-lead SOIC package (RoHS-compliant, M8.15 drawing), rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital Control Input | Accepts TTL/CMOS logic; drives internal level shifter to control SPDT state (0 = NC closed, 1 = NO closed). |
| 2 (NO) | Normally Open Switch Terminal | Analog path connected to COM only when IN = high; isolated otherwise. |
| 3 (COM) | Common Analog Terminal | Shared I/O node routed to either NO or NC based on IN logic state. |
| 4 (NC) | Normally Closed Switch Terminal | Analog path connected to COM only when IN = low; isolated otherwise. |
| 5 (GND) | Ground Reference | Return path for V+ and digital/analog signal references; must be low-impedance. |
| 6 (V+) | Positive Supply Rail | Single power source for analog switches and internal logic; sets analog signal range (0V to V+). |
| 7 (N.C.) | No Internal Connection | Unbonded pin; must remain floating-no external connection permitted. |
| 8 (N.C.) | No Internal Connection | Unbonded pin; must remain floating-no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO and NC conduction, eliminating signal shorting in critical multiplexer paths. |
| Low 5µW power consumption | Enables always-on switching in battery-powered devices without measurable impact on runtime. |
| 19Ω rON matching ≤1Ω | Preserves signal integrity across channels in differential or dual-path configurations. |
| 2000V+ ESD protection | Meets MIL-STD-883 Method 3015.7, reducing board-level ESD hardening requirements. |
| RoHS-compliant Pb-free packaging | Supports lead-free reflow profiles per TB493 and complies with global environmental regulations. |
Applications
| Audio Signal Routing | Portable Medical Instrumentation |
|---|---|
Use Scenario: Selecting between two microphone inputs or headphone outputs in a smartphone or Bluetooth headset. IC Role / Device Role / Timing Role: Committed SPDT analog switch providing low-distortion, bidirectional signal path selection with break-before-make timing. Use Value: 19Ω rON and <5pC charge injection prevent audible pop/click and preserve SNR in audio band (20Hz–20kHz). | Use Scenario: Multiplexing sensor signals (ECG leads, temperature probes) into a shared ADC front-end in a handheld patient monitor. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential acquisition of multiple biopotential signals without cross-contamination. Use Value: ≥76dB off-isolation and ≤10nA leakage ensure accurate DC-coupled measurements and minimal baseline drift. |
| Industrial DAC Output Switching | Test Equipment Signal Path Selection |
Use Scenario: Routing output of a high-resolution DAC to one of two calibration reference loads in automated test hardware. IC Role / Device Role / Timing Role: Low-rON SPDT switch acting as a programmable load selector in precision current/voltage sourcing circuits. Use Value: 19Ω rON flatness (<7Ω variation) and 28ns switching enable stable settling within DAC update cycles. | Use Scenario: Configuring signal paths in modular benchtop instruments (e.g., oscilloscope input attenuation or filter selection). IC Role / Device Role / Timing Role: High-speed analog multiplexer supporting rapid reconfiguration of measurement topologies under microcontroller control. Use Value: 200MHz small-signal bandwidth and consistent frequency response across 3.3V–12V supplies simplify wideband design validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL5120IHZ-T | Dual SPST (NO/NO), 6-pin SOT-23, -40°C to +85°C rating, same rON/tON specs but no break-before-make guarantee. | Suitable for independent channel control; not valid for SPDT replacement due to topology mismatch. | Select only if redesign allows dual-SPST layout and break-before-make is not required. |
| TMUX1574DRYR | Single SPDT, 6-pin WSON, 1.8V–5.5V supply, 0.5Ω rON, but no guaranteed break-before-make and higher 15pC charge injection. | Better for ultra-low-voltage systems; unsuitable where 12V operation or sub-5pC injection is mandatory. | Consider only for new designs targeting 3.3V-only operation and relaxed glitch requirements. |
Compared with ISL5123CBZ-T, ISL5120IHZ-T lacks SPDT topology and break-before-make assurance, while TMUX1574DRYR offers lower rON but sacrifices 12V support and fails to meet the ≤5pC charge injection requirement critical for precision sampling.
Availability
ISL5123CBZ-T is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical instrumentation, industrial DAC output switching, and test equipment signal path selection requiring stable component supply and legacy design continuity.
Supply support for ISL5123CBZ-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 emphasis on high-performance signal conditioning and robust industrial-grade solutions.
The ISL512x family was designed specifically for low-power, high-fidelity analog signal routing in space-constrained portable electronics-prioritizing low rON, fast switching, and guaranteed break-before-make behavior over general-purpose switching flexibility.
FAQ
What is the operating temperature range for ISL5123CBZ-T?
The ISL5123CBZ-T is specified for 0°C to +70°C ambient operation, as indicated by the "C" suffix in its ordering code (CBZ-T). This differs from "I"-suffix variants like ISL5123IHZ-T, which support -40°C to +85°C. Thermal derating is not required within this range, and θJA is 170°C/W for the 8-lead SOIC package.
Does ISL5123CBZ-T support 12V operation?
Yes, ISL5123CBZ-T is fully specified for operation from +2.7V to +12V. At 12V, it achieves 11Ω typical rON, 25ns tON, and maintains guaranteed break-before-make timing. The absolute maximum rating is 15V, accommodating 10% supply tolerance and transient overshoot common in 12V systems.
Is ISL5123CBZ-T pin-compatible with other ISL512x variants?
No-ISL5123CBZ-T uses an 8-lead SOIC package with two no-connect (N.C.) pins (pins 7 and 8), while ISL5123IHZ-T uses a 6-lead SOT-23 package with different pinout and no N.C. pins. Pin mapping, package footprint, and thermal characteristics are not interchangeable; PCB layout changes are required for substitution.
What does "committed SPDT" mean for ISL5123CBZ-T?
"Committed SPDT" means ISL5123CBZ-T has a fixed internal configuration: one normally open (NO), one normally closed (NC), and one common (COM) terminal-designed exclusively for 2-to-1 multiplexing. Unlike dual-SPST switches (e.g., ISL5120), it cannot be reconfigured as two independent switches; its truth table is strictly IN = 0 → NC-COM path, IN = 1 → NO-COM path.
Why is break-before-make timing important in ISL5123CBZ-T?
Break-before-make timing prevents simultaneous conduction between NO and NC paths during switching transitions, avoiding momentary short circuits between potentially incompatible signal sources (e.g., two voltage references or conflicting DAC outputs). ISL5123CBZ-T guarantees 3–10ns minimum delay, ensuring safe signal handover in precision analog routing applications.
ISL5123CBZ-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
ISL5123CBZ-T FAQ
1.How can I place an order for ISL5123CBZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5123CBZ-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 ISL5123CBZ-T reliable?
The price and inventory of ISL5123CBZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5123CBZ-T is usually 5 days.
3.What payment methods are accepted for ISL5123CBZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5123CBZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5123CBZ-T?
ISL5123CBZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5123CBZ-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 ISL5123CBZ-T?
For technical support, including ISL5123CBZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5123CBZ-T requirements.
6.How does Aetrix verify that ISL5123CBZ-T is sourced from the original manufacturer or authorized distributors?
All ISL5123CBZ-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 ISL5123CBZ-T meets industry standards.
7.What is the process for return or replacement of ISL5123CBZ-T?
All ISL5123CBZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL5123CBZ-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 ISL5123CBZ-T part is unused and in its original packaging.
Return procedure for ISL5123CBZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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