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Renesas ISL84523IBZ-T
- Part No.:
- ISL84523IBZ-T
- Manufacturer:
- Renesas
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL84523IBZ-T.pdf
- Description:
- IC SW SPST-NO/NCX4 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,525
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Product details
Overview
ISL84523IBZ-T from Intersil is a low-voltage, quad SPST analog switch with two normally open (NO) and two normally closed (NC) channels, designed for single-supply (2V–12V) or dual-supply (±2V–±6V) operation. It delivers 65Ω max RON at ±5V, 45ns tON/15ns tOFF, <1nA leakage, and break-before-make timing-enabling precision signal routing in portable medical ultrasound and battery-powered audio multiplexing.
For engineers reviewing the ISL84523IBZ-T datasheet, ISL84523IBZ-T pinout, ISL84523IBZ-T application, or ISL84523IBZ-T equivalent, key selection criteria include verified RON flatness (≤12Ω), channel-to-channel RON mismatch (<1Ω), TTL/CMOS compatibility, ESD rating (>2kV), and SOIC-16 package compatibility with legacy DG411/DG413 footprints.
Technical Context
The ISL84523IBZ-T integrates four independently controlled CMOS analog switches on a single die, with dedicated NO and NC configurations per channel pair to support dual SPDT or 2:1 multiplexer topologies. Its level-shifting logic accepts 0.8V/2.4V TTL thresholds across 2.5V–10V V+, while internal ESD diodes clamp analog pins between V+ and V−.
Supply sequencing requires V+/V− application before signal inputs to prevent forward-biasing protection diodes; operation at 3V yields 260Ω RON and 120ns tON, whereas ±5V operation achieves optimal 65Ω RON and 45ns tON with 90dB OFF isolation at 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON (±5V) | 65Ω max - ensures minimal signal attenuation in high-fidelity audio paths |
| tON/tOFF (±5V) | 45ns/15ns - enables reliable switching in >10MHz multiplexed sensor data acquisition |
| Leakage current | 1nA max at 85°C - preserves accuracy in microamp-level biomedical front-ends |
| Break-before-make delay | 5–20ns - prevents momentary short-circuit during dual-SPDT state transitions |
| ESD rating | 2000V per MIL-STD-883 Method 3015.7 - supports robust handling in assembly lines |
| Supply range | Single: +2V to +12V; Dual: ±2V to ±6V - accommodates Li-ion (3.3V), alkaline (9V), and rail-split systems |
| Signal bandwidth | 400MHz small-signal −3dB - maintains integrity in RF tee-switch and video routing |
Pinout & Package
ISL84523IBZ-T uses a 16-lead narrow-body SOIC (M16.15) package with 1.27mm pitch, 10.0mm × 4.0mm body, and 1.75mm max height. Pin 1 is marked by a beveled corner or dot; pin 9 is GND, pin 16 is V+, pin 8 is V−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control input | TTL/CMOS-compatible logic signals enabling independent channel switching |
| COM1–COM4 | Analog common node | Primary signal path connection point for each switch channel |
| NO1, NO4 | Normally open analog terminal | Connects to COM only when corresponding IN = logic high |
| NC2, NC3 | Normally closed analog terminal | Connects to COM when corresponding IN = logic low; disconnects on high |
| V+ | Positive supply rail | Bias source for internal CMOS switches and level shifters; sets upper analog voltage limit |
| V− | Negative supply rail | Required for dual-supply operation; tied to GND for single-supply use |
| GND | Ground reference | Reference for digital logic and level-shifter circuitry; no analog signal path connection |
| N.C. | No internal connection | Pin 11 is unconnected; must remain floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Two NO + two NC configuration | Enables dual SPDT or 2:1 multiplexer functionality without external components |
| RON matching | <1Ω max mismatch between channels - critical for gain-switching networks in programmable-gain amplifiers |
| RON flatness | ≤12Ω over full signal range - preserves linearity in ±3V audio and sensor signal paths |
| Charge injection | 1pC typical - minimizes voltage glitch in sample-and-hold and ADC front-end circuits |
| OFF isolation | >90dB at 100kHz - suppresses crosstalk between adjacent channels in multi-sensor systems |
Applications
| Ultrasound Signal Routing | Portable Audio Multiplexing |
|---|---|
Use Scenario: Selecting among 4 transducer elements in handheld ultrasound probes using time-division multiplexing. IC Role / Device Role / Timing Role: Quad SPST switch providing low-noise, low-leakage analog path selection synchronized to FPGA control signals. Use Value: 1nA leakage and 65Ω RON preserve weak echo signal integrity; 45ns switching enables ≥22MHz sampling rates. | Use Scenario: Routing microphone inputs and speaker outputs in compact Bluetooth headsets with shared ADC/DAC resources. IC Role / Device Role / Timing Role: Dual 2:1 analog multiplexer managing bidirectional audio paths under I²C-controlled logic. Use Value: Break-before-make timing prevents pop/click artifacts; 2.7V operation extends battery life in 3.3V systems. |
| Medical ECG Front-End | Test Equipment Signal Switching |
Use Scenario: Configuring lead selection (I, II, III, aVR, aVL, aVF) and gain stages in portable electrocardiograph units. IC Role / Device Role / Timing Role: Precision analog switch enabling programmable electrode connectivity and amplifier feedback network reconfiguration. Use Value: <1nA leakage avoids DC offset drift; RON flatness ensures consistent gain across all leads. | Use Scenario: Automating signal path selection in benchtop oscilloscope auxiliary inputs and calibration loops. IC Role / Device Role / Timing Role: High-bandwidth analog switch routing reference voltages, test stimuli, and DUT outputs within automated test fixtures. Use Value: 400MHz bandwidth supports fast edge fidelity; 90dB OFF isolation prevents measurement contamination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL84524IUZ-T | Pin-compatible upgrade with improved RON flatness (≤7Ω) and lower charge injection (0.5pC typ) | Preferred for new designs requiring enhanced linearity in precision instrumentation | Select ISL84524IUZ-T when upgrading for tighter RON flatness or lower glitch energy |
| MAX4523ESA+ | Same 16-pin SOIC footprint; 80Ω RON at ±5V; 60ns/20ns switching; 5nA leakage | Suitable for cost-sensitive industrial controls where 1nA leakage is not mandatory | Choose MAX4523ESA+ if legacy MAX452x compatibility is required and higher leakage is acceptable |
Compared with ISL84523IBZ-T, ISL84524IUZ-T offers superior RON flatness and lower charge injection for precision signal chains, while MAX4523ESA+ provides drop-in compatibility with relaxed leakage and speed specs for general-purpose switching.
Availability
ISL84523IBZ-T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered test equipment, and audio interface modules requiring stable component supply and long-term obsolescence management.
Supply support for ISL84523IBZ-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 leader in precision analog and power management ICs, now part of Renesas Electronics, with a focus on high-reliability solutions for industrial, medical, and communications markets.
The ISL84523IBZ-T belongs to Intersil's low-voltage analog switch family, engineered for ultra-low power consumption and high signal fidelity in space-constrained, battery-operated systems.
FAQ
What supply configurations does the ISL84523IBZ-T support?
The ISL84523IBZ-T operates from a single +2V to +12V supply (with V− tied to GND) or a dual ±2V to ±6V supply. At +5V single supply, it achieves 125Ω RON; at ±5V dual supply, RON drops to 65Ω. The device requires proper sequencing-V+/V− must be applied before analog or digital signals to avoid ESD diode conduction. ISL84523IBZ-T supports both configurations without external components.
How does the ISL84523IBZ-T implement break-before-make timing?
The ISL84523IBZ-T guarantees break-before-make behavior exclusively between its paired NO/NC channels (e.g., IN1 controls NO1 and NC1 simultaneously). Measured tD is 5–20ns at ±5V, ensuring no overlap between NC disconnection and NO connection. This timing is intrinsic to the internal gate drive design and does not require external timing circuitry. ISL84523IBZ-T provides this function natively for dual-SPDT use cases.
Can the ISL84523IBZ-T be used in 3V battery-powered systems?
Yes-the ISL84523IBZ-T functions down to +2.7V supply, delivering 260Ω RON and 120ns tON at 25°C. Its <1μW quiescent power and 1nA leakage make it ideal for coin-cell or single-Li-ion applications. Input thresholds remain TTL-compatible (0.8V/2.4V) across the 2.5V–10V V+ range, ensuring reliable logic interfacing even as battery voltage declines. ISL84523IBZ-T maintains specified performance across the full industrial temperature range (−40°C to +85°C).
What is the maximum analog signal voltage range for the ISL84523IBZ-T?
The ISL84523IBZ-T supports analog signals from V− to V+ across all operating conditions. With ±5V supplies, the range is −5V to +5V; with +5V/V−=GND, it is 0V to +5V. Absolute maximum ratings allow signals up to (V− − 0.3V) to (V+ + 0.3V), but sustained operation beyond V−/V+ risks forward-biasing internal ESD diodes. ISL84523IBZ-T relies on proper supply sequencing and external clamping if overvoltage events are expected.
Is the ISL84523IBZ-T pin-compatible with industry-standard analog switches?
Yes-the ISL84523IBZ-T shares the same 16-pin SOIC (M16.15) footprint and pinout as DG411, DG412, and DG413, enabling direct replacement in existing layouts. It also serves as a drop-in upgrade for MAX4521–MAX4523, offering lower RON, faster switching, and improved leakage. No PCB changes are required when substituting ISL84523IBZ-T into designs originally using those legacy parts.
ISL84523IBZ-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:
- 4
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 80ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 2pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ISL84523IBZ-T FAQ
1.How can I place an order for ISL84523IBZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84523IBZ-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 ISL84523IBZ-T reliable?
The price and inventory of ISL84523IBZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84523IBZ-T is usually 5 days.
3.What payment methods are accepted for ISL84523IBZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84523IBZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84523IBZ-T?
ISL84523IBZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84523IBZ-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 ISL84523IBZ-T?
For technical support, including ISL84523IBZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84523IBZ-T requirements.
6.How does Aetrix verify that ISL84523IBZ-T is sourced from the original manufacturer or authorized distributors?
All ISL84523IBZ-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 ISL84523IBZ-T meets industry standards.
7.What is the process for return or replacement of ISL84523IBZ-T?
All ISL84523IBZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL84523IBZ-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 ISL84523IBZ-T part is unused and in its original packaging.
Return procedure for ISL84523IBZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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