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Renesas ISL55143IRZ-T
- Part No.:
- ISL55143IRZ-T
- Manufacturer:
- Renesas
- Category:
- Comparators
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
ISL55143IRZ-T.pdf
- Description:
- IC COMPARATOR 4 WINDW 36TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,717
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Product details
Overview
ISL55143IRZ-T from Renesas Electronics (formerly Intersil) is a quad-channel, high-speed 18V CMOS window comparator IC used in digital test systems and power supervision circuits. It delivers 9.5ns typical propagation delay, 65MHz operation, ±50mV input offset voltage, and supports dual reference thresholds (CVA/CVB) per channel for three-state digitalization of up to 13V common-mode input swings. It operates across -40°C to +85°C with 36-pin TQFN packaging.
For engineers reviewing the ISL55143IRZ-T datasheet, ISL55143IRZ-T pinout, ISL55143IRZ-T application, or ISL55143IRZ-T equivalent, this page provides verified technical context, real-world use cases, validated alternative parts, and supply-chain support for ATE burn-in, fast supervisory control, instrumentation, and flash memory test voltage monitoring.
Technical Context
The ISL55143IRZ-T implements four independent dual-threshold window comparators, each with separate CVA and CVB analog reference inputs and shared VOH/VOL output rail controls. Its high-voltage CMOS process enables operation from VEE = -3V to VCC = +15V (18V total), supporting wide common-mode input ranges including negative rails.
Each channel produces two digital outputs (QA/QB) that encode input voltage relative to both thresholds - yielding three distinct states: below CVA, between CVA and CVB, or above CVB. Propagation delay mismatch is ≤2ns, and power-down mode reduces current to <10µA with 10µs entry/15µs exit latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 9.5ns typical at ±50mV overdrive - enables synchronization in 65MHz digital test clock domains. |
| Supply Voltage Range | VCC–VEE = 10V to 18V - supports split-supply operation down to -3V and up to +15V for wide-swing signal capture. |
| Input Offset Voltage | ±50mV max - ensures accurate threshold discrimination for VIH/VIL validation in logic-level testing. |
| Common-Mode Input Range | VEE to VCC–5V - accepts signals as low as negative rail and up to 5V below positive rail, critical for flash device margin testing. |
| Power-Down Current | <10µA - allows system-level power gating without compromising channel isolation or wake-up timing. |
| Output Drive Capability | 18Ω to 37Ω typical output resistance - delivers fast edge rates into 15pF loads while maintaining compatibility with TTL, LVCMOS, and ECL logic families. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade ATE and embedded power supervision environments. |
Pinout & Package
The ISL55143IRZ-T is housed in a 36-lead Thin Quad Flat No-Lead (TQFN) package measuring 6mm × 6mm × 0.8mm, with an exposed thermal pad electrically connected to VEE for enhanced heat dissipation and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CVAX, CVBX (X=0–3) | Channel X dual reference inputs | Set independent high (CVA) and low (CVB) thresholds per comparator; enable precise window qualification of VINPX. |
| VINPX (X=0–3) | Window comparator input | Single analog input shared by both CVA- and CVB-driven comparators per channel; accepts up to 13V swing. |
| QA0–QA3, QB0–QB3 | Digital output pairs | Two-bit encoding per channel: QA=0/QB=0 = below CVA; QA=1/QB=1 = above CVB; QA=0/QB=1 = invalid mid-band. |
| VOH / VOL | User-defined output logic rails | Analog supplies setting all QA/QB high/low voltage levels; unbuffered, must drive external logic's VOH/VOL requirements. |
| VCC / VEE | Positive/negative supply inputs | Power rails referenced to VEE; VEE connection also ties to exposed thermal pad for thermal management. |
| PD | Power-down control | Active-low logic input; connect to VEE to disable comparators and reduce quiescent current to <10µA. |
| NC | No internal connection | Unbonded pins (e.g., Pins 1, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35) - must be left floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dual thresholds per channel | Enables configurable VIH/VIL validation windows without external resistive dividers or op-amp circuitry. |
| User-defined VOH/VOL output rails | Allows direct interface to mixed-voltage logic systems (e.g., 5V VOH driving 3.3V controller) without level shifters. |
| Three-state digital output encoding | QA/QB pair delivers "Valid Low", "Invalid Mid-Band", and "Valid High" states - simplifies test result decoding in ATE firmware. |
| Power-down mode with fast recovery | Reduces system standby power by >99% while enabling sub-20µs wake-up for burst-mode test sequences. |
| Wide common-mode input range | Supports direct connection to flash memory I/O lines, power rails, or sensor outputs spanning –3V to +10V. |
Applications
| Burn-in ATE Testing | Low-Cost ATE Systems |
|---|---|
Use Scenario: Monitoring voltage margins on flash memory I/O during high-temperature burn-in cycles. IC Role / Device Role / Timing Role: Quad window comparator validating VIH/VIL compliance across four parallel DUTs under thermal stress. Use Value: Eliminates need for relay-based isolation and discrete comparator arrays, reducing test head complexity and calibration drift. |
Use Scenario: Real-time pass/fail classification of logic-level signals in entry-level semiconductor testers. IC Role / Device Role / Timing Role: High-speed comparator front-end converting analog stimulus into deterministic QA/QB state codes for FPGA-based analysis. Use Value: Achieves 65MHz sampling without external latches or clock domain crossing logic, lowering BOM cost and PCB area. |
| Fast Supervisory Power Control | Instrumentation Signal Conditioning |
Use Scenario: Detecting overvoltage/undervoltage events on multi-rail power supplies in telecom base stations. IC Role / Device Role / Timing Role: Window comparator monitoring each rail against programmable upper/lower limits with sub-10ns response. Use Value: Enables immediate shutdown or alert generation before downstream damage occurs, meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Converting differential sensor outputs (e.g., strain gauges, thermocouples) into digital presence/absence flags. IC Role / Device Role / Timing Role: Precision threshold detector rejecting common-mode noise while preserving fast transient detection capability. Use Value: Maintains 9.5ns propagation delay even with ±50mV input offset, ensuring accurate timing alignment in synchronized measurement systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3604DR | Quad 1.8V–5.5V comparator; no dual-threshold architecture; fixed internal hysteresis only; 4.5ns propagation delay. | Limited to single-ended comparison; lacks CVA/CVB flexibility and 18V input range; unsuitable for flash test or negative-rail monitoring. | Choose TLV3604DR only for low-voltage, high-speed single-threshold detection where power efficiency outweighs window functionality. |
| MAX961ESA+ | Dual 2.7V–5.5V comparator; includes internal 100mV hysteresis; 4.5ns propagation delay; no user-defined VOH/VOL. | Cannot replicate three-state window behavior; VOH/VOL tied to supply rails; incompatible with mixed-voltage logic interfacing. | Select MAX961ESA+ for cost-sensitive, low-voltage applications requiring basic hysteresis but not programmable thresholds or rail independence. |
Compared with TLV3604DR and MAX961ESA+, the ISL55143IRZ-T uniquely delivers quad dual-threshold window comparison with 18V operation, user-configurable output rails, and negative-rail compatibility - making it irreplaceable for flash memory ATE, power supervision, and instrumentation requiring precise voltage window qualification.
Availability
ISL55143IRZ-T is available at Aetrix Electronics and suitable for burn-in ATE, fast supervisory power control, and instrumentation applications requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.
Supply support for ISL55143IRZ-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 leader in microcontrollers, analog, power, and connectivity solutions, delivering high-reliability semiconductors for industrial, automotive, and infrastructure markets.
The ISL55143IRZ-T belongs to Renesas' high-speed precision analog comparator family, designed specifically for automated test equipment and power supervision systems demanding wide voltage range, fast propagation, and flexible threshold configuration.
FAQ
What is the maximum common-mode input voltage range supported by the ISL55143IRZ-T?
The ISL55143IRZ-T supports a common-mode input voltage range from VEE to VCC–5V. With VCC = +15V and VEE = –3V, this yields –3V to +10V operation - enabling direct interface to flash memory I/O, power rails, and sensors operating below ground potential. This specification is confirmed in the Recommended Operating Conditions table on page 4 of FN6230 Rev 4.00.
How does the ISL55143IRZ-T implement three-state window comparison?
The ISL55143IRZ-T uses two independent comparators per channel: one driven by CVA (high threshold) and one by CVB (low threshold). Their outputs QA and QB encode three states - QA=0/QB=0 for VINP < CVA, QA=1/QB=1 for VINP > CVB, and QA=0/QB=1 for CVA < VINP < CVB. This truth table is defined in Table 1 and Figure 3 of the ISL55143IRZ-T datasheet FN6230.
Can the ISL55143IRZ-T operate with a single supply, and what are the constraints?
Yes, the ISL55143IRZ-T can operate with a single supply by tying VEE to ground. However, the common-mode input range then becomes 0V to VCC–5V, and the minimum VCC must remain ≥10V to meet the 18V total supply rating. Also, the exposed thermal pad must be connected to ground when VEE = 0V, per Package Outline Drawing L36.6x6 notes on page 14.
What is the role of VOH and VOL pins, and how should they be configured?
VOH and VOL are unbuffered analog inputs that set the logic-high and logic-low voltage levels for all QA/QB outputs. They must be driven by clean, low-impedance sources capable of supplying load current - typically connected directly to the target logic device's VDD and GND. VOH must be more positive than VOL, and both must lie within (VEE – 0.5V) to (VCC + 0.5V), as specified in Absolute Maximum Ratings on page 4.
Is the ISL55143IRZ-T pin-compatible with other members of the ISL5514x family?
No, the ISL55143IRZ-T is not pin-compatible with ISL55141 or ISL55142. It uses a 36-pin TQFN package (L36.6x6), whereas ISL55141 uses 16-pin QFN or 14-pin TSSOP, and ISL55142 uses 20-pin QFN or TSSOP. Pin counts, layouts, and terminal assignments differ significantly - confirmed in Pinouts section (page 2) and Ordering Information (page 3) of FN6230 Rev 4.00.
ISL55143IRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 36-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Window
- Number of Elements:
- 4
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- 10V ~ 18V
- :
- 50mV @ -3V, 12V
- Voltage - Input Offset (Max):
- 0.025µA @ -3V, 12V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 12.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 15ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 36-TQFN (6x6)
ISL55143IRZ-T FAQ
1.How can I place an order for ISL55143IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL55143IRZ-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 ISL55143IRZ-T reliable?
The price and inventory of ISL55143IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL55143IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL55143IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL55143IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL55143IRZ-T?
ISL55143IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL55143IRZ-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 ISL55143IRZ-T?
For technical support, including ISL55143IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL55143IRZ-T requirements.
6.How does Aetrix verify that ISL55143IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL55143IRZ-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 ISL55143IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL55143IRZ-T?
All ISL55143IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL55143IRZ-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 ISL55143IRZ-T part is unused and in its original packaging.
Return procedure for ISL55143IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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