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Renesas ISL43L840IV-T
- Part No.:
- ISL43L840IV-T
- Manufacturer:
- Renesas
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL43L840IV-T.pdf
- Description:
- IC SWITCH SP4TX2 750MOHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
ISL43L840IV-T from Intersil is a dual 4-to-1 analog multiplexer/demultiplexer IC designed for low-voltage, single-supply operation (1.6V to 3.6V), delivering 0.5Ω ON resistance at +3V, 19ns switching time, and rail-to-rail analog signal handling in battery-powered portable audio/video systems.
For engineers reviewing the ISL43L840IV-T datasheet, ISL43L840IV-T pinout, ISL43L840IV-T application, or ISL43L840IV-T equivalent, key selection criteria include guaranteed break-before-make timing, 1.8V logic compatibility with +3V supply, 300mA continuous current rating, and TSSOP-16 package suitability for space-constrained handheld designs.
Technical Context
The ISL43L840IV-T implements two independent 4:1 analog multiplexers using submicron CMOS process, each with dedicated address inputs (ADDA0/ADDA1 and ADDB0/ADDB1) enabling simultaneous channel selection. Its internal level shifters translate 1.8V-compatible digital inputs into full-rail gate drive signals across the 1.6V–3.6V supply range.
Break-before-make switching ensures no signal shorting during channel transitions, while matched RON (0.12Ω max) and flat RON (0.056Ω max) preserve signal integrity across the full analog input range (0V to V+). Off-isolation exceeds 65dB at 100kHz, and crosstalk remains below –100dB between switches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Dual 4:1 analog multiplexer/demultiplexer - enables independent routing of two analog signal streams |
| ON Resistance (RON) | 0.5Ω at +3V - minimizes voltage drop and power loss in low-level signal paths |
| Switching Time (tTRANS) | 19ns at +3V - supports high-speed signal routing up to ~70MHz bandwidth |
| Supply Range | +1.6V to +3.6V - compatible with Li-ion, Li-poly, and single-cell alkaline battery systems |
| RON Matching | 0.12Ω max - ensures consistent gain and minimal channel-to-channel mismatch |
| Off-Leakage Current | 4nA max at +25°C - preserves accuracy in high-impedance sensor or medical front-end circuits |
| Logic Compatibility | 1.8V CMOS inputs with +3V supply - interfaces directly with modern low-voltage microcontrollers |
| Continuous Current | 300mA per switch - handles line-level audio, video, and sensor signal levels without derating |
Pinout & Package
ISL43L840IV-T is packaged in a 16-lead Thin Shrink Small Outline Plastic (TSSOP) per JEDEC MO-153-AB, with 0.65mm pitch, 4.90–5.10mm body width (D), and 6.25–6.50mm body length (E).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Single rail powering both analog switches and digital logic; accepts 1.6V–3.6V |
| GND | Ground reference | Common return for analog signals, digital inputs, and internal ESD protection diodes |
| COMA / COMB | Analog output channels | Common output nodes for Channel A and B multiplexers; rail-to-rail capable |
| A0–A3 / B0–B3 | Analog input channels | Eight independent analog inputs; each routed to its respective COM node based on address |
| ADDA0/ADDA1 / ADDB0/ADDB1 | Digital address inputs | Two-bit binary select lines per channel; 1.8V logic thresholds (0.5V/1.4V) at +3V supply |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no transient shorting between input channels during switching (tBBM = 4ns typ) |
| Rail-to-rail analog signal range | Supports full 0V to V+ signal swing without clipping or distortion |
| Ultra-low power consumption | <0.2µW typical - extends battery life in always-on portable instrumentation |
| High off-isolation & low crosstalk | 65dB off-isolation and <–100dB crosstalk at 100kHz - critical for multi-channel precision routing |
| Pb-free RoHS-compliant option | ISL43L840IVZ-T variant available with matte tin termination and MSL3 reflow profile |
Applications
| Audio Signal Routing | Portable Medical Sensors |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: Dual 4:1 analog multiplexer providing low-distortion, low-noise signal path selection with 19ns settling. Use Value: 0.5Ω RON and 0.056Ω RON flatness preserve audio fidelity; 1.8V logic compatibility simplifies MCU interface. | Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor outputs in wearable health monitors. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential acquisition from multiple biopotential sensors. Use Value: 4nA max off-leakage at +25°C prevents DC offset errors; rail-to-rail support accommodates varying sensor output ranges. |
| Laptop Docking Interface | Handheld Test Equipment |
Use Scenario: Routing HDMI, USB-C alternate mode, and analog audio signals through a compact docking station. IC Role / Device Role / Timing Role: Dual-path analog switch managing mixed-signal connectivity with minimal PCB footprint. Use Value: 300mA continuous current rating supports hot-plug detection and auxiliary power switching; TSSOP-16 eases layout in dense connector areas. | Use Scenario: Configuring input signal paths (voltage, current, frequency) in pocket-sized multimeters and signal generators. IC Role / Device Role / Timing Role: Low-RON, high-isolation multiplexer enabling accurate, low-crosstalk measurement channel selection. Use Value: 65dB off-isolation suppresses interference between test modes; 0.12Ω RON matching ensures calibration consistency across ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMUX1574RTER | Single-supply 1.8V–5.5V; 0.75Ω RON at 3.3V; 16-pin QFN only | Higher supply ceiling but higher RON; lacks TSSOP option | Prefer when 5.5V operation or thermal performance (θJA = 50°C/W) is required over footprint compatibility |
| ADG732BRUZ | 32-channel single-ended mux; 4.5Ω RON at 3V; 32-pin TSSOP; requires external level shifters for 1.8V logic | Higher channel count but significantly higher RON and power; not drop-in compatible | Choose only when scaling beyond 8 total inputs is mandatory and RON tolerance >4Ω is acceptable |
Compared with TMUX1574RTER and ADG732BRUZ, the ISL43L840IV-T offers the lowest RON (0.5Ω) in a TSSOP-16 package with native 1.8V logic support-making it optimal for ultra-low-loss, space-constrained portable signal routing where supply headroom is limited to ≤3.6V.
Availability
ISL43L840IV-T is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical devices, and audio/video switching applications requiring stable component supply and long-term industrial availability.
Supply support for ISL43L840IV-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 (now part of Renesas Electronics) is a U.S.-based analog and mixed-signal semiconductor company specializing in precision power management, interface, and signal conditioning ICs.
The ISL43L840 product line was engineered specifically for ultra-low-voltage, high-fidelity analog signal routing in portable consumer and medical electronics-prioritizing minimal RON, low leakage, and seamless integration with 1.8V logic ecosystems.
FAQ
What is the maximum supply voltage rating for the ISL43L840IV-T?
The ISL43L840IV-T has an absolute maximum supply voltage (V+ to GND) of 4.7V. Its recommended operating range is +1.6V to +3.6V. This 4.7V rating provides margin against transient overshoot and noise spikes on 3.3V or 3.6V rails, ensuring robustness in real-world battery-powered systems where supply regulation may be imperfect.
Does the ISL43L840IV-T support rail-to-rail analog signal switching?
Yes, the ISL43L840IV-T supports rail-to-rail analog signal switching across its full specified supply range (+1.6V to +3.6V). The analog inputs (A0–A3, B0–B3) and outputs (COMA, COMB) operate from 0V to V+, enabling undistorted passage of signals that swing fully between ground and the positive supply rail-critical for audio, sensor, and video applications.
Is the ISL43L840IV-T pin-compatible with the QFN-packaged ISL43L840IR-T?
No, the ISL43L840IV-T (16-lead TSSOP) and ISL43L840IR-T (16-lead 3×3 QFN) share identical functionality and pin functions but differ in physical pinout and package dimensions. Their pin assignments are not mechanically or electrically interchangeable without PCB redesign-TSSOP uses standard gull-wing leads, while QFN uses bottom-exposed thermal pad and perimeter terminals.
What is the guaranteed break-before-make time for the ISL43L840IV-T?
The ISL43L840IV-T guarantees a break-before-make time (tBBM) of 1ns minimum and 4ns typical at +3.3V supply, measured under RL = 50Ω and CL = 35pF conditions. This ensures no overlap between selected channels during address transitions, eliminating signal shorting-a key requirement for reliable multiplexing in precision analog systems.
Can the ISL43L840IV-T operate from a 1.8V supply, and what performance changes occur?
Yes, the ISL43L840IV-T operates from +1.8V. At this supply, RON increases to 0.62Ω (typ), tTRANS rises to 24ns (typ), and RON flatness degrades to 0.14Ω (typ). However, it retains full 1.8V logic compatibility, 300mA current capability, and rail-to-rail analog range-making it viable for ultra-low-power modes where speed and RON trade-offs are acceptable.
ISL43L840IV-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 750mOhm
- Channel-to-Channel Matching (ΔRon):
- 120mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -96pC
- Channel Capacitance (CS(off), CD(off)):
- 62pF
- Current - Leakage (IS(off)) (Max):
- 4nA
- Crosstalk:
- -100dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
ISL43L840IV-T FAQ
1.How can I place an order for ISL43L840IV-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L840IV-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 ISL43L840IV-T reliable?
The price and inventory of ISL43L840IV-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L840IV-T is usually 5 days.
3.What payment methods are accepted for ISL43L840IV-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L840IV-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L840IV-T?
ISL43L840IV-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L840IV-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 ISL43L840IV-T?
For technical support, including ISL43L840IV-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L840IV-T requirements.
6.How does Aetrix verify that ISL43L840IV-T is sourced from the original manufacturer or authorized distributors?
All ISL43L840IV-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 ISL43L840IV-T meets industry standards.
7.What is the process for return or replacement of ISL43L840IV-T?
All ISL43L840IV-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L840IV-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 ISL43L840IV-T part is unused and in its original packaging.
Return procedure for ISL43L840IV-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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