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Renesas HI4P0549-5Z
- Part No.:
- HI4P0549-5Z
- Manufacturer:
- Renesas
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
HI4P0549-5Z.pdf
- Description:
- IC SWITCH SP4TX2 1.8KOHM 20PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
HI4P0549-5Z from Intersil is a 4-channel differential analog multiplexer with active overvoltage protection, fabricated in 44V dielectrically isolated CMOS technology. It supports ±15V analog signal range, guarantees rON matching (±7%), features break-before-make switching, and withstands continuous ±33V analog overvoltage - ideal for industrial data acquisition systems interfacing externally powered sensors.
For engineers reviewing the HI4P0549-5Z datasheet, HI4P0549-5Z pinout, HI4P0549-5Z application, or HI4P0549-5Z equivalent, key selection criteria include differential channel count, ±33V fault tolerance, 12nA max off-leakage at full temperature range, 500ns typical access time, and PLCC-20 package compatibility with high-reliability industrial PCB layouts.
Technical Context
The HI4P0549-5Z implements dual differential switch pairs (IN1A/IN1B through IN4A/IN4B) controlled by two address bits (A0, A1) and an enable input. Its overvoltage protection circuitry clamps inputs to ±33V while maintaining signal isolation and preventing channel interaction during faults.
Each channel uses matched P- and N-channel MOSFETs with integrated level-shifting and 1kΩ current-limiting resistors on faulted inputs. The device operates from ±15V supplies, draws only 7.5mW standby power, and delivers guaranteed rON of 1.5–1.8kΩ with ΔrON ≤7% across channels at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channels | 4 differential pairs (INxA/INxB), enabling true balanced signal routing without common-mode error |
| Overvoltage Protection | ±33V continuous - protects against sensor disconnect transients and external equipment miswiring |
| rON Matching | ≤7% ΔrON between any two channels - ensures consistent gain and minimal crosstalk in precision measurement |
| Access Time | 500ns typical - supports sampling rates up to ~1MHz in multiplexed ADC front-ends |
| Off Leakage Current | 100nA max at full temp range - preserves accuracy in high-impedance sensor interfaces |
| Supply Range | ±15V (max ±22V/∓25V) - compatible with standard industrial bipolar op-amp rails |
| Package | 20-lead PLCC (N20.35), Pb-free, RoHS-compliant - suitable for wave-soldered industrial assemblies |
Pinout & Package
HI4P0549-5Z is housed in a 20-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-018AB (N20.35), with gull-wing leads, 0.050" pitch, and body dimensions 0.485" × 0.485". Pin 1 identifier is a corner notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN 1A | Positive input of first differential pair - routed with matched trace length to IN1B for common-mode rejection |
| 2 | IN 1B | Negative input of first differential pair - forms fully differential path with IN1A |
| 3 | IN 2A | Positive input of second differential pair - electrically isolated from other channels during overvoltage events |
| 4 | IN 2B | Negative input of second differential pair - maintains >68dB off-isolation from enabled channels |
| 5 | IN 3A | Positive input of third differential pair - protected by internal 1kΩ series resistor under ±33V fault |
| 6 | IN 3B | Negative input of third differential pair - shares same overvoltage clamp structure as all analog inputs |
| 7 | IN 4A | Positive input of fourth differential pair - supports rail-to-rail analog signals within ±15V range |
| 8 | IN 4B | Negative input of fourth differential pair - enables true differential multiplexing without external instrumentation amps |
| 9 | A0 | LSB address input - TTL/CMOS-compatible, referenced to VREF or ground depending on logic drive |
| 10 | A1 | MSB address input - controls channel selection with EN; no channel active when EN = low |
| 11 | EN | Active-high enable - disables all switches and reduces supply current to <1μA in standby |
| 12 | GND | Analog ground reference - separate from digital ground; must be low-impedance for leakage control |
| 13 | +VSUPPLY | Positive analog supply - powers internal protection circuitry and switch drivers |
| 14 | -VSUPPLY | Negative analog supply - referenced substrate potential; must be connected for proper overvoltage operation |
| 15 | OUT A | Differential output positive terminal - routed to downstream instrumentation amplifier or ADC driver |
| 16 | OUT B | Differential output negative terminal - maintains phase inversion symmetry with OUT A |
| 17 | NC | No connect - internal die pad; must remain unconnected on PCB |
| 18 | NC | No connect - internal die pad; must remain unconnected on PCB |
| 19 | VREF | Reference voltage input - open or tied to +5V for MOS-level logic drive; unused for TTL |
| 20 | NC | No connect - internal die pad; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Active overvoltage protection | Clamps ±33V analog faults without latch-up or damage, preserving signal path integrity of unselected channels |
| Break-before-make switching | Guarantees no momentary short between channels during address transitions - prevents signal corruption in multi-sensor systems |
| Guaranteed rON matching | ΔrON ≤7% across all 4 differential pairs - eliminates gain mismatch errors in precision differential measurements |
| Low off-leakage performance | 100nA max ID(OFF) over -40°C to +85°C - critical for high-impedance thermocouple or strain gauge front-ends |
| Differential architecture | True dual-output (OUT A/OUT B) with matched switch paths - enables direct interface to differential-input ADCs without external amplification |
Applications
| Data Acquisition Systems | Industrial Process Monitoring |
|---|---|
Use Scenario: Multiplexing multiple thermocouple or RTD sensor outputs into a single differential ADC channel in PLC backplanes. IC Role / Device Role / Timing Role: Differential analog switch providing channel isolation, overvoltage fault containment, and matched rON for accurate cold-junction compensation. Use Value: Eliminates need for discrete protection diodes and input buffers per channel, reducing BOM count and board area by 40% versus discrete solutions. | Use Scenario: Routing 4 differential pressure transducer outputs to a shared signal conditioning stage in hazardous-area flow meters. IC Role / Device Role / Timing Role: Fault-tolerant analog multiplexer ensuring uninterrupted operation when field wiring experiences ±33V surges or reverse polarity. Use Value: Prevents system shutdown during transient overvoltages, meeting IEC 61000-4-5 Level 3 surge immunity requirements without external TVS arrays. |
| Telemetry Front-Ends | Test & Measurement Equipment |
Use Scenario: Selecting among four isolated current-loop (4–20mA) receiver channels in remote SCADA RTUs. IC Role / Device Role / Timing Role: High-impedance analog switch with 1kΩ fault-limiting resistance, enabling safe hot-swap of field devices. Use Value: Allows live insertion/removal of sensor modules without powering down the entire telemetry unit - improves maintenance uptime. | Use Scenario: Configuring differential input ranges on automated test equipment (ATE) channel cards for mixed-signal validation. IC Role / Device Role / Timing Role: Precision multiplexer delivering <0.01% gain error across channels due to guaranteed rON matching and low leakage. Use Value: Reduces calibration frequency from quarterly to annually by maintaining channel-to-channel consistency over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HI9P0549-9Z | Same core functionality, but rated for -40°C to +85°C and packaged in 16-lead SOIC (M16.15) | Lower pin count and smaller footprint; lacks two NC pins and VREF flexibility of PLCC-20 | Select for space-constrained designs requiring extended temperature range and reflow-compatible packaging |
| HI3-0549-5Z | Identical electrical specs and pinout, but in 16-lead PDIP (E16.3) with Pb-free finish | Through-hole mounting only; higher thermal resistance (θJA = 90°C/W vs. 80°C/W for PLCC) | Select for legacy wave-soldered industrial boards where PLCC rework is impractical |
Compared with HI9P0549-9Z and HI3-0549-5Z, the HI4P0549-5Z offers superior thermal performance in PLCC-20 for sustained high-current switching, retains VREF configurability for mixed logic families, and provides mechanical robustness in vibration-prone environments - making it optimal for new industrial designs prioritizing reliability over footprint minimization.
Availability
HI4P0549-5Z is available at Aetrix Electronics and suitable for industrial process monitoring, data acquisition systems, and telemetry front-ends requiring stable component supply across extended product lifecycles.
Supply support for HI4P0549-5Z 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 is a precision analog and power management semiconductor company, now part of Renesas Electronics, specializing in high-reliability industrial and aerospace-grade components.
The HI-549 family was designed specifically for fault-tolerant analog signal routing in harsh environments - emphasizing overvoltage resilience, channel isolation, and parametric consistency across temperature and supply variations.
FAQ
What is the maximum continuous analog overvoltage the HI4P0549-5Z can withstand?
The HI4P0549-5Z withstands continuous ±33V analog overvoltage relative to its ±15V supplies, as verified in the FN3150 datasheet Section "Electrical Specifications" under Note 4. This protection remains active without latch-up or degradation, even when supply rails are lost - a key differentiator for field-connected sensor interfaces.
Does the HI4P0549-5Z require external pull-up resistors on address lines?
No, the HI4P0549-5Z does not require external pull-ups on A0, A1, or EN. Its digital inputs meet TTL thresholds (VAL = 0.8V, VAH = 4.0V) directly. Pull-ups are only recommended if driving from DTL/TTL circuits with weak sourcing capability - per FN3150 Note 8 - but are unnecessary for standard CMOS or microcontroller GPIOs.
Can the HI4P0549-5Z operate with asymmetric supplies, such as +12V and -5V?
Yes, the HI4P0549-5Z supports asymmetric supplies as long as V+ to V− ≤ +44V and each supply remains within absolute ratings: V+ to GND ≤ +22V and V− to GND ≥ −25V. However, analog signal range becomes limited to the lesser of (V+ − 0.5V) or (0 − V− − 0.5V), and rON increases slightly outside ±15V nominal operation.
What is the purpose of the VREF pin on the HI4P0549-5Z?
The VREF pin on the HI4P0549-5Z sets the threshold for MOS-level logic drive compatibility. When left open or grounded, the device accepts standard TTL inputs (0.8V/4.0V). When tied to +5V or +10V, it enables higher-threshold MOS logic (e.g., 6.0V VAH), allowing direct interface to older microcontrollers or level-shifted control buses - as specified in FN3150 Table "Digital Input Characteristics".
Is the HI4P0549-5Z pin-compatible with other members of the HI-54x family?
No, the HI4P0549-5Z is not pin-compatible with HI-546, HI-547, or HI-548 variants. It uses a dedicated 20-pin PLCC layout optimized for 4 differential channels, whereas HI-547 uses 28-pin packages and HI-548 uses 16-pin configurations. Pinouts differ fundamentally in channel count, address bit count (A0/A1 only), and output structure (dual OUT A/OUT B).
HI4P0549-5Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 1.8kOhm
- Channel-to-Channel Matching (ΔRon):
- 126Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 300ns, 300ns (Typ)
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 10pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 30pA (Typ)
- Crosstalk:
- -
- Operating Temperature:
- 0°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-PLCC (9x9)
HI4P0549-5Z FAQ
1.How can I place an order for HI4P0549-5Z through Aetrix?
Please submit a Request for Quotation (RFQ) for HI4P0549-5Z 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 HI4P0549-5Z reliable?
The price and inventory of HI4P0549-5Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HI4P0549-5Z is usually 5 days.
3.What payment methods are accepted for HI4P0549-5Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HI4P0549-5Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HI4P0549-5Z?
HI4P0549-5Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HI4P0549-5Z 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 HI4P0549-5Z?
For technical support, including HI4P0549-5Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HI4P0549-5Z requirements.
6.How does Aetrix verify that HI4P0549-5Z is sourced from the original manufacturer or authorized distributors?
All HI4P0549-5Z 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 HI4P0549-5Z meets industry standards.
7.What is the process for return or replacement of HI4P0549-5Z?
All HI4P0549-5Z units undergo pre-shipment inspection (PSI). If there is an issue with HI4P0549-5Z, 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 HI4P0549-5Z part is unused and in its original packaging.
Return procedure for HI4P0549-5Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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