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Renesas ISL54066IRTZ-T
- Part No.:
- ISL54066IRTZ-T
- Manufacturer:
- Renesas
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL54066IRTZ-T.pdf
- Description:
- IC SWITCH SPST-NOX2 1OHM 10TDFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL54066IRTZ-T from Intersil is a dual SPST normally open analog switch optimized for low-voltage, high-isolation signal routing in portable electronics. It operates from a single +1.8V to +6.5V supply, delivers 1 Ω rON at 4.3V, 80 dB off-isolation, and supports negative signal swing down to 6.5V below V+, enabling true bipolar signal handling in battery-powered audio and measurement systems.
For engineers reviewing the ISL54066IRTZ-T datasheet, ISL54066IRTZ-T pinout, ISL54066IRTZ-T application, or ISL54066IRTZ-T equivalent, key selection criteria include verified T-switch architecture performance, confirmed 10-lead TDFN (3×3 mm) package mapping, guaranteed 40 ns tON/30 ns tOFF timing at 4.3V, and validated GND1/GND2 shunt resistor configuration for input/output bias control.
Technical Context
The ISL54066IRTZ-T implements a T-switch topology to achieve simultaneous low rON (1 Ω typ. @ 4.3V) and high off-isolation (70–80 dB), with independent digital control per channel (CTL1/CTL2). Its internal 10 kΩ INx-to-GND1 and 200 kΩ OUTx-to-GND2 shunt resistors enable DC offset discharge and output charge bleed-activated only when GND1/GND2 are tied to GND3.
Signal range spans (V+ − 6.5 V) to V+, supporting −1.5 V to +5 V operation at V+ = 5 V. Logic inputs are 1.8V-compatible (VIL ≤ 0.5 V, VIH ≥ 1.4 V @ 3 V supply), and power consumption remains ultra-low (≤1.76 µA I+ over full temp range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST NO - two independent, normally open analog switches for discrete signal path control. |
| rON @ 4.3V | 1 Ω typical - ensures minimal insertion loss (<0.05 dB) in 50 Ω audio/video paths. |
| tON/tOFF | 40 ns / 30 ns @ 4.3V - enables reliable switching in sub-10 MHz multiplexed data acquisition. |
| Off-Isolation | 80 dB - suppresses crosstalk between inactive channels in multi-signal handheld devices. |
| Negative Swing | 6.5 V below V+ - allows AC-coupled signals with DC offsets to pass without clipping or distortion. |
| Supply Range | +1.8V to +6.5V - supports direct interface with Li-ion (3.0–4.2 V), 3.3 V, and 5 V logic domains. |
| ESD Rating | >6 kV HBM - meets IEC 61000-4-2 Level 4 for robustness in consumer handheld assembly and field use. |
Pinout & Package
ISL54066IRTZ-T is packaged in a 10-lead 3×3 mm TDFN (Pb-free, RoHS-compliant) with exposed thermal pad. Pin numbering follows standard top-view orientation with pin 1 marked by index area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Single power input for analog/switch logic; must be applied before any signal or control voltage. |
| GND1 | Input shunt ground | Reference for 10 kΩ INx-to-GND1 resistors; tie to GND3 to enable input DC offset discharge. |
| GND2 | Output shunt ground | Reference for 200 kΩ OUTx-to-GND2 resistors; tie to GND3 to bleed output charge when switch is OFF. |
| GND3 | Main IC ground | Primary return path for internal circuitry; star-ground connection point for optimal off-isolation. |
| IN1 / IN2 | Analog switch inputs | Signal entry points; support (V+ − 6.5 V) to V+ range with ≤300 mA continuous current. |
| OUT1 / OUT2 | Analog switch outputs | Signal exit points; exhibit 124 pF COUT(ON) and 33 pF COFF for predictable impedance matching. |
| CTL1 / CTL2 | Digital control inputs | CMOS-compatible logic inputs; accept 0.5 V (max) low and 1.4 V (min) high thresholds at 3 V supply. |
Key Features
| Feature | Design Value |
|---|---|
| T-switch architecture | Enables concurrent 1 Ω rON and 80 dB off-isolation-critical for high-fidelity audio routing without signal leakage. |
| rON flatness ≤0.27 Ω | Maintains consistent gain and phase response across full analog signal range, minimizing THD+N (0.015% typ). |
| Independent channel control | Allows asymmetric switching (e.g., IN1→OUT1 active while IN2→OUT2 remains open) for flexible signal matrix design. |
| 1.8V logic compatibility | Eliminates level-shifting components when interfacing with ultra-low-power microcontrollers in wearables. |
| Low charge injection (40–200 pC) | Reduces glitch-induced artifacts in precision ADC front-ends and medical sensor interfaces. |
Applications
| Cellular Handset Audio Routing | Portable Medical Sensor Multiplexer |
|---|---|
Use Scenario: Switching microphone and earpiece signals between baseband processor and codec in space-constrained smartphones. IC Role / Device Role / Timing Role: Dual SPST analog switch providing bidirectional audio path selection with <40 ns switching latency. Use Value: 1 Ω rON preserves SNR in 20 Hz–20 kHz band; 80 dB off-isolation prevents audible crosstalk during call handover. | Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor outputs into a shared ADC channel in handheld diagnostics. IC Role / Device Role / Timing Role: Low-leakage, high-isolation analog switch enabling sequential sensor sampling without cross-channel interference. Use Value: (V+ − 6.5 V) signal range accommodates ±2.5 V ECG differential signals; 0.27 Ω rON flatness ensures <0.001% gain error across sensor channels. |
| Laptop Docking Station Video Switching | Battery-Powered Test Equipment Signal Path |
Use Scenario: Selecting between integrated GPU and external HDMI/DisplayPort video sources in ultrabook docking stations. IC Role / Device Role / Timing Role: High-bandwidth analog switch supporting 30 MHz −3 dB bandwidth for VGA/UXGA resolution video routing. Use Value: 33 pF COFF minimizes feedthrough at 100 MHz; T-switch architecture maintains isolation >60 dB up to 10 MHz. | Use Scenario: Configuring input attenuation, coupling mode (AC/DC), and signal path in handheld oscilloscopes and multimeters. IC Role / Device Role / Timing Role: Precision analog switch enabling programmable front-end conditioning with calibrated rON matching (≤10 mΩ). Use Value: rON matching ensures identical gain error across dual-channel measurements; 1.8V operation extends battery life in field-deployed tools. |
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 |
|---|---|---|---|
| MAX4676ETA+ | Higher rON (2.5 Ω @ 5 V), no negative swing capability, 10-lead TDFN (3×3 mm) footprint compatible. | Not suitable for signals extending below GND; limited to unipolar 0–V+ ranges. | Select when negative swing is unnecessary and higher rON tolerance is acceptable. |
| TMUX1574RSVR | Lower rON (0.5 Ω @ 3.3 V), supports −5.5 V to +5.5 V signal range, 10-lead WQFN (2.5×2.5 mm) - smaller footprint but different pinout. | Requires PCB redesign due to non-pin-compatible layout; superior for high-speed USB 2.0 switching. | Choose for space-constrained designs needing lower rON and wider signal range, accepting layout change. |
Compared with MAX4676ETA+ and TMUX1574RSVR, the ISL54066IRTZ-T uniquely balances 1 Ω rON, 6.5 V negative swing, and 80 dB off-isolation in a production-proven 3×3 mm TDFN package-making it optimal for legacy-compatible, bipolar-signal portable designs where pinout retention is critical.
Availability
ISL54066IRTZ-T is available at Aetrix Electronics and suitable for cellular handset audio routing, portable medical sensor multiplexing, and laptop docking station video switching requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ISL54066IRTZ-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 semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The ISL54066 product line was designed for ultra-low-voltage, high-isolation analog switching in battery-powered portable equipment-emphasizing negative signal swing, minimal rON variation, and compact packaging for space-constrained handheld platforms.
FAQ
What is the maximum allowable negative signal voltage for ISL54066IRTZ-T?
The ISL54066IRTZ-T supports analog input signals down to (V+ − 6.5 V). For example, with V+ = 5.0 V, the minimum signal voltage is −1.5 V; with V+ = 3.3 V, it is −3.2 V. This capability is enabled by internal circuitry that extends the analog range beyond GND without requiring a negative supply rail, and is fully characterized in the datasheet's Absolute Maximum Ratings and Typical Performance Curves (Figure 14).
Does ISL54066IRTZ-T require external pull-up or pull-down resistors on CTL1/CTL2?
No, the ISL54066IRTZ-T does not require external pull-up or pull-down resistors on CTL1/CTL2. Its digital inputs are CMOS-compatible with defined thresholds (VIL ≤ 0.5 V, VIH ≥ 1.4 V @ 3 V supply) and draw negligible current (≤0.63 µA). However, if driving from high-impedance or slow-rising sources, a 1 kΩ series resistor is recommended for overvoltage protection per Figure 8 in the ISL54066IRTZ-T datasheet.
How do the GND1, GND2, and GND3 pins function in ISL54066IRTZ-T?
GND3 is the main IC ground reference. GND1 provides the return path for internal 10 kΩ shunt resistors connected to IN1/IN2; GND2 returns the 200 kΩ shunts on OUT1/OUT2. To activate these shunts, GND1 and GND2 must be tied to GND3. Floating GND1 or GND2 disables the corresponding shunt network. Star grounding of all three GND pins is recommended to maximize off-isolation performance, as detailed in Figure 7 of the ISL54066IRTZ-T datasheet.
What is the thermal resistance (θJA) of ISL54066IRTZ-T in its TDFN package?
The ISL54066IRTZ-T in the 10-lead 3×3 mm TDFN package has a typical junction-to-ambient thermal resistance (θJA) of 55°C/W when mounted on a high thermal conductivity test board in free air, as specified in the Absolute Maximum Ratings table on page 3 of the ISL54066IRTZ-T datasheet. This value assumes proper PCB copper pour under the exposed pad and standard JEDEC 2-layer board conditions.
Can ISL54066IRTZ-T operate reliably at 1.8V supply with full signal range?
Yes, the ISL54066IRTZ-T is fully specified for 1.8V operation, including rON = 3 Ω (typ), tON = 180 ns, tOFF = 44 ns, and signal range from −4.7 V to +1.8 V. All parameters are production-tested or characterized across −40°C to +85°C, with electrical specifications tables (pages 5–6) and performance curves (Figures 10–13) confirming functionality at minimum supply voltage.
ISL54066IRTZ-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:
- 2
- On-State Resistance (Max):
- 1Ohm
- Channel-to-Channel Matching (ΔRon):
- 5mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 6.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 39ns, 27ns
- -3db Bandwidth:
- 30MHz
- Charge Injection:
- 170pC
- Channel Capacitance (CS(off), CD(off)):
- 33pF
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -80dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
ISL54066IRTZ-T FAQ
1.How can I place an order for ISL54066IRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL54066IRTZ-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 ISL54066IRTZ-T reliable?
The price and inventory of ISL54066IRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL54066IRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL54066IRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL54066IRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL54066IRTZ-T?
ISL54066IRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL54066IRTZ-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 ISL54066IRTZ-T?
For technical support, including ISL54066IRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL54066IRTZ-T requirements.
6.How does Aetrix verify that ISL54066IRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL54066IRTZ-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 ISL54066IRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL54066IRTZ-T?
All ISL54066IRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL54066IRTZ-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 ISL54066IRTZ-T part is unused and in its original packaging.
Return procedure for ISL54066IRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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