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Renesas ISL54503IHZ-T
- Part No.:
- ISL54503IHZ-T
- Manufacturer:
- Renesas
- Package:
- SOT-23-6
- Datasheet:
-
ISL54503IHZ-T.pdf
- Description:
- IC SWITCH SPDT X 1 2.5OHM 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:1,251
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Product details
Overview
ISL54503IHZ-T from Intersil is a single-pole/double-throw (SPDT) analog switch optimized for battery-powered portable systems, featuring 2.5Ω ON-resistance at +5V, 25ns turn-on time, and 1.8V–5.5V single-supply operation. It serves as a bidirectional signal path selector in cellular phone ASIC interface expansion, audio routing, and handheld test equipment.
For engineers reviewing the ISL54503IHZ-T datasheet, ISL54503IHZ-T pinout, ISL54503IHZ-T application, or ISL54503IHZ-T equivalent, key selection criteria include guaranteed break-before-make timing, 6kV HBM ESD rating, 7pF OFF-capacitance, and compatibility with 1.8V CMOS logic under +3V supply conditions.
Technical Context
The ISL54503IHZ-T implements a committed SPDT architecture with one normally open (NO) and one normally closed (NC) channel, enabling use as a 2:1 multiplexer. Its internal CMOS switch structure uses level-shifted gate drive to maintain low rON across the full 1.8V–5.5V supply range.
It guarantees break-before-make switching (tD = 15ns max at +5.5V), supports analog signals from 0V to V+, and features matched rON (≤0.15Ω max) and flat rON (≤0.7Ω max) to minimize distortion in audio and precision signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON-resistance (rON) | 2.5Ω at +5V - enables <10mV insertion loss in 50Ω audio/video paths |
| Turn-on / Turn-off Time | 25ns / 15ns at +4.5V - supports high-speed multiplexing in data acquisition |
| rON Matching | ≤0.15Ω max - ensures ≤0.1% gain error between NO/NC paths in instrumentation |
| Supply Voltage Range | +1.8V to +5.5V - operates directly from Li-ion battery or 3.3V/5V rails without regulation |
| ESD Rating (HBM) | 6kV - meets IEC 61000-4-2 Level 4 for handheld device front-end protection |
| OFF Isolation | 70dB at 1MHz - suppresses crosstalk in multi-channel audio routing |
| Charge Injection | 24pC max - limits glitch amplitude in precision ADC/DAC sample-hold circuits |
Pinout & Package
ISL54503IHZ-T is packaged in a Pb-free 6-lead SOT-23 (MDP0038) with 0.95mm pitch, 1.45mm height, and exposed thermal pad-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | Analog Normally Closed | Connects to COM when IN = logic low; used for default signal path |
| 2 (IN) | Digital Control Input | 1.8V CMOS-compatible; accepts 0.5V/1.4V thresholds at +3V supply |
| 3 (NO) | Analog Normally Open | Connects to COM when IN = logic high; enables active signal selection |
| 4 (V+) | Positive Supply Rail | Single power source for analog switch core and logic interface; 1.8–5.5V range |
| 5 (COM) | Analog Common Terminal | Bidirectional I/O node; supports ±300mA continuous current |
| 6 (GND) | Ground Reference | Return path for supply and signal; must be low-impedance for THD <0.03% |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | 15ns minimum delay prevents momentary short-circuit during switching |
| rON flatness | 0.7Ω max over full signal range - maintains consistent gain in 0–5V sensor interfaces |
| Low leakage | ±300nA max COM ON leakage - preserves accuracy in high-impedance medical sensor front-ends |
| High-frequency bandwidth | 250MHz -3dB point - supports HDMI auxiliary channel and USB 2.0 ID detection |
| 1.8V logic compatibility | Valid VINH/VINL thresholds at +3V supply - eliminates level-shifter in mixed-voltage SoC designs |
Applications
| Cellular Phone Signal Expansion | Portable Audio Routing |
|---|---|
Use Scenario: Expanding limited ASIC analog GPIO count to support additional microphone, speaker, or headset detection paths. IC Role / Device Role / Timing Role: Bidirectional SPDT switch providing mux-in capability for analog sensors and audio peripherals. Use Value: Reduces ASIC redesign risk while maintaining <0.03% THD and 70dB off-isolation in 3.5mm jack detection. | Use Scenario: Routing stereo line-in, line-out, and mic signals in compact Bluetooth speakers or voice recorders. IC Role / Device Role / Timing Role: Low-distortion analog switch enabling dynamic reconfiguration of audio signal paths. Use Value: 2.5Ω rON and 24pC charge injection prevent audible clicks and preserve SNR >95dB. |
| Handheld Test Equipment | Medical Sensor Interface |
Use Scenario: Multiplexing multiple sensor inputs (thermocouple, RTD, strain gauge) into a shared ADC channel. IC Role / Device Role / Timing Role: Precision SPDT switch with matched rON and low leakage for calibrated measurement paths. Use Value: ≤0.15Ω rON matching and ±300nA leakage ensure <0.1% gain error and stable offset in µV-level measurements. | Use Scenario: Isolating ECG electrode inputs during lead-off detection or selecting between differential amplifier configurations. IC Role / Device Role / Timing Role: Bi-directional analog switch with guaranteed break-before-make for patient safety-critical signal routing. Use Value: 15ns tD prevents transient coupling between electrodes; 6kV HBM withstands clinical ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL54050 | Lower rON (1.8Ω @5V), higher supply current (2µA), same SOT-23 package | Better performance in high-bandwidth video routing; higher static power | Select ISL54050 when <2Ω rON and 300MHz bandwidth are required; verify layout for V+ series resistor per Figure 8 |
| TMUX1574DBVR | 4-channel SPDT, 3.5Ω rON, 1.08V–5.5V supply, different pinout | Higher integration for multi-signal systems; not pin-compatible | Choose TMUX1574DBVR for space-constrained designs needing 4 independent switches; requires PCB redesign |
Compared with ISL54503IHZ-T, ISL54050 delivers lower rON and higher bandwidth but increases quiescent current by 20×; TMUX1574DBVR offers channel density at the cost of pin compatibility and slightly higher rON, making it suitable only for new layouts.
Availability
ISL54503IHZ-T is available at Aetrix Electronics and suitable for cellular phone design, portable audio equipment, handheld test instrumentation, and medical sensor interface applications requiring stable component supply and long-term lifecycle support.
Supply support for ISL54503IHZ-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, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The ISL54503 product line targets low-voltage, low-power portable electronics, delivering high-speed analog switching with minimal distortion and robust ESD tolerance in ultra-compact packages.
FAQ
What is the maximum analog signal voltage range supported by the ISL54503IHZ-T?
The ISL54503IHZ-T supports an analog signal range from 0V to V+, where V+ is the positive supply voltage. With V+ operating from +1.8V to +5.5V, the signal range scales accordingly - for example, 0V to +3.3V when powered from a 3.3V rail. Exceeding this range forward-biases internal ESD diodes, limiting fault current to safe levels per absolute maximum ratings.
Does the ISL54503IHZ-T require external level-shifting circuitry when driven by 1.8V logic?
No, the ISL54503IHZ-T does not require external level-shifting when driven by 1.8V CMOS logic under +3V supply conditions. Its digital input thresholds are specified as VINL ≤ 0.5V and VINH ≥ 1.4V at +3V, fully compatible with standard 1.8V logic output levels. This eliminates level shifters in mixed-voltage SoC interfaces.
How does the ON-resistance of the ISL54503IHZ-T vary with supply voltage?
The ISL54503IHZ-T's ON-resistance varies inversely with supply voltage: 7.0Ω typical at +1.8V, 4.0Ω at +3.0V, and 2.5Ω at +5.0V. This behavior is inherent to CMOS switch architecture and is documented in both datasheet tables and Figure 10. Designers must account for rON increase at lower voltages when calculating signal attenuation or THD.
Is the ISL54503IHZ-T pin-compatible with the ISL54503IRUZ-T?
No, the ISL54503IHZ-T (6-lead SOT-23, MDP0038) is not pin-compatible with the ISL54503IRUZ-T (6-lead µTDFN, L6.1.2x1.0A). Pin assignments differ: IN is on pin 2 in SOT-23 but pin 6 in µTDFN; COM is on pin 5 in SOT-23 but pin 4 in µTDFN. Board redesign is required for substitution.
What thermal considerations apply to the ISL54503IHZ-T in continuous operation?
The ISL54503IHZ-T has a θJA of 260°C/W in the SOT-23 package. At maximum 300mA continuous current and 2.5Ω rON, power dissipation is 225mW, resulting in ~58°C junction rise above ambient. For reliable operation at +85°C ambient, keep board copper area around pins 4 (V+) and 6 (GND) ≥25mm² and avoid enclosing the device in sealed enclosures without airflow.
ISL54503IHZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 3mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 15ns
- -3db Bandwidth:
- 250MHz
- Charge Injection:
- 24pC
- Channel Capacitance (CS(off), CD(off)):
- 7pF
- Current - Leakage (IS(off)) (Max):
- 25nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SOT
ISL54503IHZ-T FAQ
1.How can I place an order for ISL54503IHZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL54503IHZ-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 ISL54503IHZ-T reliable?
The price and inventory of ISL54503IHZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL54503IHZ-T is usually 5 days.
3.What payment methods are accepted for ISL54503IHZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL54503IHZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL54503IHZ-T?
ISL54503IHZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL54503IHZ-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 ISL54503IHZ-T?
For technical support, including ISL54503IHZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL54503IHZ-T requirements.
6.How does Aetrix verify that ISL54503IHZ-T is sourced from the original manufacturer or authorized distributors?
All ISL54503IHZ-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 ISL54503IHZ-T meets industry standards.
7.What is the process for return or replacement of ISL54503IHZ-T?
All ISL54503IHZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL54503IHZ-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 ISL54503IHZ-T part is unused and in its original packaging.
Return procedure for ISL54503IHZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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