My Inquiry
My Account
Renesas ISL84543CBZ-T
- Part No.:
- ISL84543CBZ-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL84543CBZ-T.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL84543CBZ-T from Renesas Electronics is a dual single-pole/single-throw (SPST) analog switch configured as two normally open (NO) switches, operating from a single +2.7V to +12V supply. It delivers 30Ω on-resistance at 5V, 35ns turn-on time, and 10nA max leakage at 85°C, enabling precision signal routing in space-constrained portable instrumentation and audio multiplexing.
For engineers reviewing the ISL84543CBZ-T datasheet, ISL84543CBZ-T pinout, ISL84543CBZ-T application, or ISL84543CBZ-T equivalent, key selection criteria include guaranteed RON matching (<1Ω), low 5pC charge injection, TTL/CMOS compatibility, and SOT-23-8 package footprint compatibility with ISL84541IHZ-T.
Technical Context
The ISL84543CBZ-T implements CMOS transmission-gate switching architecture with integrated level shifters that translate TTL/CMOS logic inputs (0.8V/2.4V thresholds) into full-rail analog gate control across its 2.7–12V supply range. Its internal ESD protection diodes clamp analog pins to V+ and GND, requiring proper supply sequencing to avoid forward bias.
Unlike bipolar-supply switches, this device operates exclusively on single-ended supplies; analog signal range spans 0V to V+, with RON flatness of 7Ω (typ) and break-before-make timing not applicable-confirming its dedicated SPST NO topology per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V - supports direct interface with 3.3V, 5V, and 12V systems without level translation |
| RON (5V) | 30Ω (typ) - enables low insertion loss in audio and sensor signal paths up to 10mA continuous current |
| RON Matching | <1Ω (typ) - ensures matched gain/attenuation in differential or dual-path circuits |
| tON/tOFF | 35ns / 25ns (typ at 5V) - supports high-speed multiplexing in data acquisition and sample-and-hold applications |
| Charge Injection | 5pC (max) - minimizes voltage glitch in precision integrator reset and DAC output switching |
| Leakage Current | 10nA (max at 85°C) - preserves signal integrity in high-impedance sensor front-ends and battery-monitoring circuits |
| ESD Rating | 2000V (HBM, MIL-STD-883 Method 3015.7) - provides robust handling in automated assembly and field-replaceable modules |
Pinout & Package
ISL84543CBZ-T is housed in an 8-lead SOT-23 package (P8.064 drawing), measuring 3.0mm × 1.7mm × 1.3mm with gull-wing leads. This RoHS-compliant, surface-mount package supports reflow soldering per Pb-free profile TB493 and offers θJA = 215°C/W for thermal management in dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Normally Open Terminal 1 | Switched output path for Channel 1; connects to COM1 only when IN1 = logic high |
| 2 (V+) | Positive Supply Rail | Single power input for analog switches and internal logic; sets analog signal ceiling (0V to V+) |
| 3 (IN2) | Digital Control Input 2 | TTL/CMOS-compatible enable for Channel 2; threshold 0.8V (low), 2.4V (high) |
| 4 (COM2) | Analog Common Terminal 2 | Shared analog node for Channel 2; routes signal between NO2 and NC2 (not present in ISL84543) |
| 5 (COM1) | Analog Common Terminal 1 | Shared analog node for Channel 1; routes signal between NO1 and NC1 (not present in ISL84543) |
| 6 (GND) | Ground Reference | Return path for supply and logic; establishes 0V reference for all analog and digital signals |
| 7 (NO2) | Analog Normally Open Terminal 2 | Switched output path for Channel 2; connects to COM2 only when IN2 = logic high |
| 8 (IN1) | Digital Control Input 1 | TTL/CMOS-compatible enable for Channel 1; identical electrical behavior to IN2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual SPST NO topology | Independent control of two analog paths with no internal NC connection - eliminates cross-talk risk in isolated signal routing |
| Low 5pC charge injection | Reduces voltage transient on high-impedance nodes during switching - critical for precision sample-and-hold and integrator reset |
| 30Ω RON with <1Ω matching | Ensures amplitude consistency between parallel channels in stereo audio or dual-sensor interfaces |
| Single 2.7–12V supply operation | Eliminates need for dual-rail supplies or charge pumps - simplifies power design in portable medical and test equipment |
| 2000V HBM ESD rating | Withstands handling stress without external protection - reduces BOM count in handheld device assemblies |
Applications
| Portable Audio Multiplexing | Medical Sensor Signal Routing |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in Bluetooth headsets and hearing aids. IC Role / Device Role / Timing Role: Dual SPST analog switch providing bidirectional, rail-to-rail audio path selection with minimal distortion. Use Value: 30Ω RON and 5pC charge injection preserve SNR >95dB and prevent pop/click artifacts during real-time channel switching. | Use Scenario: Routing ECG electrode signals to a single ADC input in wearable cardiac monitors. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance biopotential sources during sequential sampling. Use Value: 10nA max leakage at 85°C prevents baseline drift and maintains DC accuracy in sub-μV-level measurements. |
| Industrial Data Acquisition | Test Equipment Signal Conditioning |
Use Scenario: Multiplexing thermocouple or RTD inputs into a shared precision amplifier stage in modular PLC I/O modules. IC Role / Device Role / Timing Role: Precision SPST switch enabling cold-junction compensation and sensor calibration path selection. Use Value: RON flatness of 7Ω (typ) ensures consistent gain across temperature ranges, reducing system-level calibration burden. | Use Scenario: Configuring input attenuation and coupling networks in handheld oscilloscopes and multimeters. IC Role / Device Role / Timing Role: High-isolation analog switch selecting between AC/DC coupling and 1×/10× probe paths. Use Value: 76dB off-isolation at 1MHz suppresses feedthrough from adjacent channels, preserving measurement fidelity in multi-function instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL84541IHZ-T | Identical electrical specs and pinout; same SOT-23-8 package; marked '541Z' on bottom | No functional difference - direct second-source option with identical performance envelope | Select ISL84541IHZ-T when sourcing flexibility or alternate reel packaging (3k units) is required |
| MAX4541EUT+T | 35Ω RON (5V), 45ns tON, 6pC charge injection; SOT-23-6 package with different pin assignment | Requires PCB layout revision due to 6-pin vs. 8-pin footprint and altered pin functions (no separate COM1/COM2) | Choose MAX4541EUT+T only if legacy MAX4541 footprint compatibility is mandatory and performance trade-offs are acceptable |
Compared with ISL84543CBZ-T, ISL84541IHZ-T offers identical functionality and drop-in replacement capability, while MAX4541EUT+T requires board redesign and accepts higher RON and slower switching - making ISL84543CBZ-T optimal for new designs prioritizing precision and layout efficiency.
Availability
ISL84543CBZ-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, and professional audio interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for ISL84543CBZ-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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.
The ISL84543CBZ-T belongs to Renesas' precision analog switch family designed specifically for low-power, high-fidelity signal routing in battery-operated and space-constrained systems where leakage, charge injection, and RON matching are critical.
FAQ
What is the maximum analog signal voltage range supported by the ISL84543CBZ-T?
The ISL84543CBZ-T supports an analog signal range from 0V to V+, where V+ is the positive supply voltage. With a supply range of +2.7V to +12V, the analog input/output voltage must remain within this rail-to-rail span. Exceeding V+ or going below GND risks forward-biasing internal ESD diodes, potentially causing damage or increased leakage - so signal clamping or external protection may be needed in overvoltage scenarios.
Does the ISL84543CBZ-T support break-before-make switching?
No, the ISL84543CBZ-T does not implement break-before-make (BBM) switching. It is a dual SPST NO device with independent control of two normally open paths; BBM timing is specified only for the ISL84544 (SPDT variant). Attempting to use ISL84543CBZ-T in applications requiring BBM - such as power domain isolation or relay replacement - will result in momentary short-circuits if both switches are activated simultaneously.
Can the ISL84543CBZ-T operate from a 3.3V supply while maintaining full performance?
Yes, the ISL84543CBZ-T is fully specified at 3.3V: RON = 50Ω (typ), tON/tOFF = 50ns/20ns (typ), and leakage remains ≤10nA at 85°C. However, RON increases and switching speed degrades relative to 5V operation - verified in Tables on pages 4–6 of FN6016 Rev.8.0. For 3.3V systems where low RON is critical, confirm signal path impedance budgets accommodate the 50Ω value.
What is the thermal resistance (θJA) of the ISL84543CBZ-T in its SOT-23-8 package?
The ISL84543CBZ-T in the 8-lead SOT-23 package (P8.064) has a typical junction-to-ambient thermal resistance (θJA) of 215°C/W, measured on a low effective thermal conductivity test board in free air (per Tech Brief TB379). This value assumes standard JEDEC layout; actual θJA improves with copper pour, thermal vias, or airflow - critical for sustained 10mA operation in enclosed enclosures.
Is the ISL84543CBZ-T pin-compatible with the MAX323 analog switch?
No, the ISL84543CBZ-T is not pin-compatible with the MAX323. While the datasheet notes "Pin Compatible with MAX323" for the broader ISL8454x family, this refers only to the 8-lead SOIC variant (e.g., ISL84541IBZ), not the SOT-23-8 package used by ISL84543CBZ-T. The SOT-23-8 pinout differs fundamentally - MAX323 uses SOT-23-6 with distinct terminal assignments, requiring PCB redesign for substitution.
ISL84543CBZ-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:
- 2
- On-State Resistance (Max):
- 60Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 100ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL84543CBZ-T FAQ
1.How can I place an order for ISL84543CBZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84543CBZ-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 ISL84543CBZ-T reliable?
The price and inventory of ISL84543CBZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84543CBZ-T is usually 5 days.
3.What payment methods are accepted for ISL84543CBZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84543CBZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84543CBZ-T?
ISL84543CBZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84543CBZ-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 ISL84543CBZ-T?
For technical support, including ISL84543CBZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84543CBZ-T requirements.
6.How does Aetrix verify that ISL84543CBZ-T is sourced from the original manufacturer or authorized distributors?
All ISL84543CBZ-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 ISL84543CBZ-T meets industry standards.
7.What is the process for return or replacement of ISL84543CBZ-T?
All ISL84543CBZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL84543CBZ-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 ISL84543CBZ-T part is unused and in its original packaging.
Return procedure for ISL84543CBZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL84543CBZ-T Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
