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Renesas ISL43112IH-T
- Part No.:
- ISL43112IH-T
- Manufacturer:
- Renesas
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL43112IH-T.pdf
- Description:
- IC SWITCH SPST-NO X 1 20OHM 5SOT
- Quantity:
- Payment:
- Shipping:
Inventory:2,648
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Product details
Overview
ISL43112IH-T from Intersil is a low-voltage, dual-supply, single-pole/single-throw (SPST), normally open analog switch optimized for ±1.5V to ±6V operation. It delivers 15Ω on-resistance at ±4.5V, 42ns turn-on time, 25ns turn-off time, 7pC charge injection, and sub-nanoamp off-leakage (5nA max at 85°C), enabling precision signal routing in battery-powered portable instrumentation and medical ultrasound front-ends.
For engineers reviewing the ISL43112IH-T datasheet, ISL43112IH-T pinout, ISL43112IH-T application, or ISL43112IH-T equivalent, this device supports break-before-make switching, CMOS logic compatibility, ±3.3V/±5V supply tolerance, RoHS-compliant SOT-23 packaging, and high-frequency analog multiplexing up to 400MHz bandwidth with >90dB off-isolation at 100kHz.
Technical Context
The ISL43112IH-T uses a CMOS-based analog switch architecture with integrated level shifters that translate CMOS-compatible digital inputs into full-rail gate drive signals across V+ and V−. Its dual-supply topology eliminates ground reference dependency, supporting asymmetric supplies while maintaining precise analog signal range from V− to V+.
Break-before-make timing is guaranteed at ±5V supplies, preventing momentary short-circuits during state transitions. Internal ESD protection diodes (≥2000V per MIL-STD-883 Method 3015.7) clamp input and analog pins to V+ and V−, requiring proper supply sequencing-V+ and V− must be applied before signal or control inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1.5V to ±6V - enables operation in ultra-low-voltage portable systems and robust industrial rails |
| rON | 15Ω typ at ±4.5V - ensures minimal signal attenuation and distortion in precision ADC/DAC interfaces |
| rON Flatness | 5Ω max - preserves linearity and THD over full analog input range (V− to V+) |
| tON/tOFF | 42ns/25ns typ at ±4.5V - supports high-speed multiplexing in data acquisition and test equipment |
| Charge Injection | 7pC typ - minimizes voltage glitch in sample-and-hold and integrator reset circuits |
| Off-Leakage Current | 5nA max at 85°C - critical for long-integration-time medical sensors and low-power battery monitoring |
| Off-Isolation | >90dB at 100kHz - suppresses crosstalk in multi-channel audio/video routing and RF front-end switching |
Pinout & Package
The ISL43112IH-T is housed in a 5-lead SOT-23 package (JEDEC MO-178AA, Intersil P5.064), with exposed pad omitted and thermal resistance θJA = 225°C/W. Pin 1 is marked via laser etch on bottom surface (part marking "112Z").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital Control Input | CMOS-compatible logic input; threshold defined relative to V+, not GND - requires sequencing before analog signals |
| 2 (V+) | Positive Supply Rail | Supplies internal logic, level shifter, and switch gates; sets upper analog voltage limit (V+) |
| 3 (COM) | Analog Common Terminal | Switch output node; connects to load or downstream circuit; carries full analog signal swing |
| 4 (NO) | Normally Open Analog Terminal | Open-circuit when IN = 0; closes to COM when IN = 1 - implements SPST NO function with break-before-make timing |
| 5 (V−) | Negative Supply Rail | Completes dual-supply path; sets lower analog voltage limit (V−); sinks negative supply current |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed at ±5V - prevents transient shorts in multiplexer trees and relay-replacement circuits |
| Sub-nanoamp leakage | 5nA max off-leakage at 85°C - preserves accuracy in high-impedance sensor interfaces and electrochemical measurement |
| Low rON flatness | 5Ω max variation - maintains consistent gain and phase response across full input voltage range |
| High off-isolation | >90dB at 100kHz - enables clean channel separation in portable DMMs and spectrum analyzers |
| ESD robustness | ≥2000V HBM - reduces field failure risk in handheld test gear assembly and end-user handling |
Applications
| Portable Medical Ultrasound Front-End | Battery-Powered Handheld DMM |
|---|---|
Use Scenario: Routing echo return signals from multiple transducer elements to a shared ADC channel under tight power budget. IC Role / Device Role / Timing Role: SPST NO analog switch providing channel selection with <45ns switching and <7pC charge injection to avoid baseline shift. Use Value: Enables 16-channel beamforming in sub-50mW handheld units while preserving SNR >72dB through low rON flatness and high off-isolation. | Use Scenario: Multiplexing DC voltage, current, and resistance ranges onto a single precision op-amp front-end in a palm-sized multimeter. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating unused ranges; operates from ±3.3V dual rail to match MCU I/O levels. Use Value: Achieves 0.01% basic accuracy by limiting off-state leakage to ≤5nA and maintaining rON stability across temperature. |
| Audio Signal Path Switching | High-Speed Data Acquisition MUX |
Use Scenario: Selecting between microphone, line-in, and headset outputs in a voice-controlled smart speaker with noise-sensitive analog paths. IC Role / Device Role / Timing Role: Normally open switch enabling clean signal path activation only when required; supports ±5V audio rails. Use Value: Delivers >90dB channel rejection at 20kHz and <15Ω rON to prevent insertion loss in 600Ω audio lines. | Use Scenario: Scanning 8 thermocouple inputs into a 1MSPS SAR ADC in an industrial PLC module with strict timing jitter limits. IC Role / Device Role / Timing Role: High-speed analog switch with 42ns tON and 25ns tOFF, synchronized to ADC sampling clock. Use Value: Reduces aperture uncertainty to <10ps and avoids inter-channel crosstalk via >90dB off-isolation at 100kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUT+T | Single-supply only (1.8V–6V); no dual-rail support; 20Ω rON at 5V; 100ns tON | Requires external level-shifting for bipolar signal routing; unsuitable for ±3.3V/±5V systems without redesign | Select only if system uses single-ended supplies and tolerates higher rON and slower switching |
| ADG1419BRMZ-REEL | Dual-supply capable (±5V to ±16.5V); 1.3Ω rON; 20ns tON; but 10-lead MSOP package and 3× cost | Over-spec'd for low-voltage portable use; excessive voltage rating increases layout complexity and cost | Prefer for high-precision, high-voltage industrial systems where 1.3Ω rON justifies size and cost premium |
Compared with MAX4617EUT+T and ADG1419BRMZ-REEL, the ISL43112IH-T uniquely balances dual-supply flexibility, SOT-23 compactness, sub-50ns speed, and nanoamp leakage-making it optimal for space-constrained, battery-operated designs needing true bipolar signal handling without level-shift overhead.
Availability
ISL43112IH-T is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, battery-powered audio interfaces, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for ISL43112IH-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 precision analog and power management solutions provider, now part of Renesas Electronics, with deep expertise in high-performance interface and signal-path ICs.
The ISL43112IH-T belongs to Intersil's low-voltage analog switch family, engineered specifically for portable, low-power, and high-fidelity signal routing applications demanding dual-supply operation and nanoscale leakage control.
FAQ
What is the maximum supply voltage rating for the ISL43112IH-T?
The ISL43112IH-T has an absolute maximum V+ to V− rating of 15V. Operation is fully specified from ±1.5V to ±6V, with performance validated at ±3.3V and ±5V supplies including 10% tolerance margins. Exceeding ±6V risks violating recommended operating conditions even if within absolute maximum ratings.
Does the ISL43112IH-T support break-before-make switching across all supply voltages?
Break-before-make timing is explicitly guaranteed only at ±5V supplies per the datasheet truth table and timing specifications. At ±3.3V or ±1.5V, the device remains functional as an SPST NO switch but does not guarantee break-before-make behavior - designers must verify timing margins in their specific application.
Can the ISL43112IH-T be used with single-supply systems?
No - the ISL43112IH-T requires dual supplies (V+ and V−) and lacks a ground reference. For single-supply applications, Intersil recommends the pin-compatible ISL43110 or ISL43111, which share the same SOT-23 footprint but feature TTL/CMOS-compatible inputs referenced to VDD and GND.
What is the thermal resistance (θJA) of the ISL43112IH-T in its SOT-23 package?
The ISL43112IH-T in the 5-lead SOT-23 package (P5.064) has a typical junction-to-ambient thermal resistance (θJA) of 225°C/W when mounted on a low effective thermal conductivity test board in free air, per JEDEC JESD51-2 standards.
How is the digital input threshold defined for the ISL43112IH-T given it has no GND pin?
The ISL43112IH-T's digital input threshold is referenced primarily to V+, not ground. At ±5V, VINH ≥ 3.5V and VINL ≤ 1.5V; at ±3.3V, VINH ≥ 2.0V and VINL ≤ 0.6V. This V+-relative logic interface eliminates ground bounce issues but requires careful supply sequencing - V+ and V− must be stable before applying IN signals.
ISL43112IH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 20Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±1.5V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 70ns, 45ns
- -3db Bandwidth:
- -
- Charge Injection:
- 7pC
- Channel Capacitance (CS(off), CD(off)):
- 13pF, 13pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-SOT
ISL43112IH-T FAQ
1.How can I place an order for ISL43112IH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43112IH-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 ISL43112IH-T reliable?
The price and inventory of ISL43112IH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43112IH-T is usually 5 days.
3.What payment methods are accepted for ISL43112IH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43112IH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43112IH-T?
ISL43112IH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43112IH-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 ISL43112IH-T?
For technical support, including ISL43112IH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43112IH-T requirements.
6.How does Aetrix verify that ISL43112IH-T is sourced from the original manufacturer or authorized distributors?
All ISL43112IH-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 ISL43112IH-T meets industry standards.
7.What is the process for return or replacement of ISL43112IH-T?
All ISL43112IH-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL43112IH-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 ISL43112IH-T part is unused and in its original packaging.
Return procedure for ISL43112IH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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