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Renesas ISL5122CBZ-T
- Part No.:
- ISL5122CBZ-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5122CBZ-T.pdf
- Description:
- IC SW SPST-NO/NCX2 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,306
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Product details
Overview
ISL5122CBZ-T from Intersil is a dual SPST analog switch with one normally open (NO) and one normally closed (NC) channel, enabling SPDT functionality in a single 8-lead SOIC package. It operates from +2.7V to +12V, delivers 19Ω ON-resistance at 5V, 28ns turn-on time, guaranteed break-before-make switching, and supports battery-powered portable equipment requiring low leakage (≤10nA) and fast signal routing.
For engineers reviewing the ISL5122CBZ-T datasheet, ISL5122CBZ-T pinout, ISL5122CBZ-T application, or ISL5122CBZ-T equivalent, this page provides verified electrical specs, SOIC-8 terminal mapping, real-world use cases in audio/video multiplexing and medical instrumentation, and validated alternative parts for legacy design continuity.
Technical Context
The ISL5122CBZ-T implements CMOS-based bidirectional analog switching with integrated level shifters that translate TTL/CMOS logic inputs (0.8V/2.4V thresholds) into full-rail gate drive signals across its 2.7–12V supply range. Its internal architecture guarantees break-before-make timing (≥3ns) between the NO and NC channels to prevent signal shorting during state transitions.
Each channel features matched ON-resistance (≤1Ω matching), low charge injection (≤5pC), and high off-isolation (>76dB at 1MHz), making it suitable for precision sample-and-hold, DAC/ADC interface, and high-frequency analog multiplexing where signal integrity and channel crosstalk (<−105dB) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V - Enables direct integration into 3.3V, 5V, and 12V systems without level-shifting circuitry. |
| ON Resistance (rON) | 19Ω at 5V - Ensures minimal signal attenuation and voltage drop in analog signal paths up to ±5V swing. |
| rON Matching | ≤1Ω - Guarantees balanced gain and phase response when routing differential or matched signals. |
| Turn-On / Turn-Off Time | 28ns / 20ns at 5V - Supports high-speed multiplexing up to ~15MHz without significant edge distortion. |
| Charge Injection | ≤5pC - Limits voltage glitch on sampled nodes, critical for precision integrator reset and ADC front-end applications. |
| Leakage Current | ≤10nA - Maintains accuracy in high-impedance sensor interfaces and long-time-constant circuits. |
| Break-Before-Make Delay | ≥3ns - Prevents momentary short-circuit between NO and NC paths during switching, protecting downstream circuitry. |
Pinout & Package
ISL5122CBZ-T is housed in an 8-lead SOIC package (RoHS-compliant, M8.15 drawing) with standard 1.27mm pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Digital Control Input | Drives NO1 channel: Logic low = OFF, logic high = ON. |
| 2 (NO1) | Normally Open Switch Terminal | Connects to COM1 only when IN1 = high; isolated otherwise. |
| 3 (COM1) | Analog Common Node (Channel 1) | Primary signal path for Channel 1; connects to NO1 or NC1 depending on control state. |
| 4 (GND) | Ground Reference | Return path for power and logic; must be low-impedance to minimize noise coupling. |
| 5 (V+) | Positive Supply Rail | Single supply input (2.7–12V); powers analog switches and internal logic/level shifters. |
| 6 (COM2) | Analog Common Node (Channel 2) | Primary signal path for Channel 2; connects to NO2 or NC2 depending on control state. |
| 7 (NC2) | Normally Closed Switch Terminal | Connected to COM2 when IN2 = low; opens when IN2 = high. |
| 8 (IN2) | Digital Control Input | Drives NC2 channel: Logic low = ON, logic high = OFF. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make operation | Prevents transient shorting between NO and NC paths during switching-critical for SPDT signal routing safety. |
| Low 5µW power consumption | Enables always-on analog switching in battery-powered devices without measurable impact on runtime. |
| TTL/CMOS-compatible logic inputs | Accepts standard 0.8V/2.4V thresholds across full supply range-no external level translation required. |
| 2000V ESD protection per MIL-STD-883 Method 3015.7 | Ensures robust handling during PCB assembly and field operation in handheld equipment environments. |
| RoHS-compliant Pb-free packaging | Meets global environmental compliance requirements and supports lead-free reflow profiles (Level 1 MSL). |
Applications
| Audio Signal Routing | Medical Instrumentation |
|---|---|
Use Scenario: Selecting between microphone and line-in inputs in a portable voice recorder. IC Role / Device Role / Timing Role: Dual-channel analog switch providing SPDT function to route either source to a common ADC input. Use Value: Eliminates need for discrete relays or larger mux ICs while maintaining <28ns switching and <10nA leakage for clean audio capture. | Use Scenario: Configuring electrode inputs in a portable electrocardiograph (ECG) front-end. IC Role / Device Role / Timing Role: Isolating unused leads and selecting active differential pairs under microcontroller control. Use Value: Leverages guaranteed break-before-make and ≤10nA leakage to prevent DC offset errors and ensure patient safety compliance. |
| Portable Communications | Test Equipment Signal Path |
Use Scenario: Multiplexing RF front-end calibration paths in a handheld military radio. IC Role / Device Role / Timing Role: High-isolation (76dB) analog switch enabling precise 50Ω signal routing without feedthrough. Use Value: Delivers >−105dB crosstalk and flat frequency response to 300MHz-preserving signal fidelity during calibration sweeps. | Use Scenario: Auto-ranging input selection in a handheld multimeter's analog front end. IC Role / Device Role / Timing Role: Low-rON (19Ω), matched-switch SPDT routing signal to different gain stages or attenuators. Use Value: rON flatness ≤7Ω ensures consistent scaling across voltage ranges; low charge injection avoids measurement glitches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL5120IHZ-T | Same family, dual NO configuration in 6-lead SOT-23; lower rON (19Ω @5V), identical timing specs. | Requires board redesign due to SOT-23 package and missing NC functionality; not SPDT-capable. | Select when space-constrained designs need dual NO switching and can accommodate smaller footprint and no NC path. |
| ISL5122IHZ-T | Identical NO/NC functionality and electrical specs, but in −40°C to +85°C temperature grade and 6-lead SOT-23 package. | Not pin-compatible with SOIC-8; requires layout change and thermal validation for extended temperature operation. | Choose for industrial or automotive applications needing wider temp range and smaller size-only if PCB revision is feasible. |
Compared with ISL5122CBZ-T, ISL5120IHZ-T offers space savings and same performance but lacks NC functionality, while ISL5122IHZ-T retains full SPDT behavior at extended temperature but demands SOT-23 layout adaptation-neither is drop-in replaceable without hardware changes.
Availability
ISL5122CBZ-T is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical devices, and communications systems requiring stable component supply and legacy design support.
Supply support for ISL5122CBZ-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 semiconductor manufacturer specializing in precision analog and power management solutions, now part of Renesas Electronics.
The ISL512x family was designed for low-voltage, single-supply analog signal routing in portable and space-constrained systems-emphasizing low power, small footprint, and high-speed performance without sacrificing precision.
FAQ
What is the operating temperature range for ISL5122CBZ-T?
The ISL5122CBZ-T is specified for commercial temperature operation from 0°C to +70°C, as confirmed in the ordering information table (page 3 of FN6022 Rev 8.00). This range applies to all electrical parameters unless otherwise noted, and aligns with its "CBZ" suffix designation. For extended temperature operation, ISL5122IBZ-T (−40°C to +85°C) is the qualified alternative.
Does ISL5122CBZ-T support true SPDT operation?
Yes, ISL5122CBZ-T supports true SPDT operation via its integrated NO/NC topology: Channel 1 uses IN1 to control NO1–COM1, and Channel 2 uses IN2 to control NC2–COM2. The datasheet explicitly states "ISL5122 has one NO and one NC switch and can be used as an SPDT", and guarantees break-before-make timing (tD ≥3ns) to prevent overlap-enabling reliable single-pole double-throw signal routing without external components.
What is the maximum analog signal voltage range supported by ISL5122CBZ-T?
The ISL5122CBZ-T supports an analog signal range from 0V to V+, where V+ is the positive supply rail (2.7V to 12V). Per the Absolute Maximum Ratings and Electrical Specifications tables, signals on NO, NC, and COM pins must remain within −0.3V to (V+ + 0.3V), but functional analog range is 0V to V+. Exceeding V+ or going below GND forward-biases internal ESD diodes, so clamping or external protection is required for overvoltage conditions.
Is ISL5122CBZ-T pin-compatible with other ISL512x variants in SOIC-8?
Yes, ISL5122CBZ-T shares identical pinout and SOIC-8 package (M8.15) with ISL5120CBZ-T, ISL5121CBZ-T, and ISL5123CBZ-T, as shown in the Pin Configurations section (page 2 of FN6022). All use the same 8-pin mapping: IN1, NO1, COM1, GND, V+, COM2, NC2, IN2. However, internal switch configurations differ-ISL5122CBZ-T is the only NO/NC variant in this SOIC-8 group.
What is the recommended replacement for ISL5122CBZ-T according to the manufacturer?
According to the official Intersil datasheet (FN6022 Rev 8.00, page 3), the recommended replacement for ISL5122CBZ-T is ISL5120IHZ-T. This is explicitly stated in the Ordering Information table under the ISL5122CBZ-T row: "(No longer available, recommended replacement: ISL5120IHZ-T)". Note that ISL5120IHZ-T is a dual NO device in SOT-23 and not functionally identical-it serves as a last-time-buy alternative rather than a direct functional substitute.
ISL5122CBZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL5122CBZ-T FAQ
1.How can I place an order for ISL5122CBZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5122CBZ-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 ISL5122CBZ-T reliable?
The price and inventory of ISL5122CBZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5122CBZ-T is usually 5 days.
3.What payment methods are accepted for ISL5122CBZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5122CBZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5122CBZ-T?
ISL5122CBZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5122CBZ-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 ISL5122CBZ-T?
For technical support, including ISL5122CBZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5122CBZ-T requirements.
6.How does Aetrix verify that ISL5122CBZ-T is sourced from the original manufacturer or authorized distributors?
All ISL5122CBZ-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 ISL5122CBZ-T meets industry standards.
7.What is the process for return or replacement of ISL5122CBZ-T?
All ISL5122CBZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL5122CBZ-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 ISL5122CBZ-T part is unused and in its original packaging.
Return procedure for ISL5122CBZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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