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Renesas HI3-0508A-5
- Part No.:
- HI3-0508A-5
- Manufacturer:
- Renesas
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
HI3-0508A-5.pdf
- Description:
- IC MUX 8:1 1.8KOHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
HI3-0508A-5 from Intersil is a single 8-channel CMOS analog multiplexer with active overvoltage protection, designed for fault-tolerant signal routing in industrial data acquisition systems. It supports ±15V analog signal range, delivers 500ns access time, maintains <2.0kΩ on-resistance across temperature, and withstands continuous ±33V analog overvoltage without latch-up or channel interaction.
For engineers reviewing the HI3-0508A-5 datasheet, HI3-0508A-5 pinout, HI3-0508A-5 application, or HI3-0508A-5 equivalent, this device is selected when robust input protection, break-before-make switching, low leakage (<200nA off-state), and compatibility with TTL/CMOS logic levels are required in harsh external-signal environments.
Technical Context
The HI3-0508A-5 uses dielectrically isolated CMOS (CMOS-DI) technology to enable true overvoltage tolerance: analog inputs sustain ±33V continuously while maintaining signal integrity and isolating faulted channels. Its internal protection circuitry clamps overvoltage and presents 1kΩ resistance during supply loss, preventing damage to upstream sources.
Digital control employs three address lines (A0–A2) and an enable input (EN) to select one of eight analog inputs to a common output. The decoder drives level-shifted signals to N- and P-channel switch transistors, ensuring rail-to-rail conduction and break-before-make timing (80ns typical) to prevent momentary shorts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channels | Single 8-channel configuration - routes one of eight analog inputs to shared output under digital address control. |
| Analog Signal Range | ±15V - supports full-rail operation with ±15V dual supplies, enabling direct interface with industrial sensor outputs. |
| Access Time | 500ns typical - ensures fast channel switching for high-throughput data acquisition at up to ~1MHz effective sampling rate. |
| On Resistance | 1.5–2.0kΩ max over full temperature range - minimizes gain error and voltage drop in precision measurement paths. |
| Off Leakage Current | ≤200nA max at +75°C - preserves accuracy in high-impedance sensor networks by limiting crosstalk-induced errors. |
| Overvoltage Protection | ±33V continuous - protects against field-wiring faults, ESD transients, and misconnected external equipment without degradation. |
| Power Dissipation | 7.5mW typical - enables dense placement in thermally constrained industrial modules without forced cooling. |
Pinout & Package
HI3-0508A-5 is housed in a 16-lead PDIP package (JEDEC MS-001-BB, drawing E16.3), with 0°C to +75°C operating temperature range and Pb-free RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+VSUPPLY) | Positive analog supply | Connects to +15V rail; powers analog switch core and protection circuitry. |
| 2 (IN 1) | Analog input channel 1 | One of eight bidirectional analog terminals; protected against ±33V overvoltage. |
| 3 (IN 2) | Analog input channel 2 | Identical protection and impedance characteristics as IN 1 through IN 8. |
| 4 (IN 3) | Analog input channel 3 | Supports break-before-make switching; no channel interaction during fault conditions. |
| 5 (IN 4) | Analog input channel 4 | Input presents ≤10pF capacitance when OFF, minimizing crosstalk in high-frequency routing. |
| 6 (IN 5) | Analog input channel 5 | Valid for ±15V signal swing; leakage <50nA at +25°C ensures minimal loading on high-Z sources. |
| 7 (IN 6) | Analog input channel 6 | Internally isolated via dielectric isolation; immune to latch-up even during supply sequencing faults. |
| 8 (IN 7) | Analog input channel 7 | Compatible with TTL/CMOS logic thresholds (0.8V/4.0V) without external pull-ups. |
| 9 (IN 8) | Analog input channel 8 | Final channel in 8:1 configuration; shares same on-resistance profile and settling behavior as others. |
| 10 (A0) | LSB address input | Binary-selects channel; driven directly from microcontroller GPIO or FPGA output. |
| 11 (A1) | Address input | Second bit of 3-bit address bus; level-shifted internally to match switch threshold voltages. |
| 12 (A2) | MSB address input | Completes 3-bit decode for eight-channel selection; tolerant of ±4V beyond supply rails. |
| 13 (ENABLE) | Channel enable control | Active-high; disables all switches when low, reducing leakage and power consumption. |
| 14 (GND) | Analog/digital ground reference | Common return for supplies, logic, and analog paths; requires low-impedance PCB connection. |
| 15 (OUT) | Common analog output | Bidirectional terminal; passes selected channel signal with <3.5µs settling to 0.01%. |
| 16 (–VSUPPLY) | Negative analog supply | Connects to –15V rail; substrate tied to –VSUPPLY potential per CMOS-DI process requirement. |
Key Features
| Feature | Design Value |
|---|---|
| Active overvoltage protection | ±33V continuous analog input tolerance prevents damage and maintains signal path integrity during wiring faults. |
| Break-before-make switching | 80ns minimum delay between channel disconnect and connect avoids transient short-circuits in multi-source systems. |
| No channel interaction during overvoltage | Fault on one input does not affect conduction or leakage of other channels - critical for system-level reliability. |
| Fail-safe with power loss | Each unpowered input presents 1kΩ resistance, protecting external sensors from short-circuit current if V± fails. |
| Low off-capacitance | 25pF typical channel output capacitance minimizes crosstalk and settling time in high-speed multiplexing. |
| Pb-free RoHS compliance | E16.3 PDIP package uses 100% matte tin plating and annealed termination, compatible with SnPb and Pb-free soldering. |
Applications
| Data Acquisition Systems | Industrial Process Monitoring |
|---|---|
Use Scenario: Multiplexing outputs from eight pressure, temperature, and flow sensors into a single ADC input in a PLC rack. IC Role / Device Role: Fault-tolerant analog signal router that isolates sensor faults and maintains measurement continuity. Use Value: Eliminates need for external protection diodes or relays, reducing BOM count and board area while supporting ±15V industrial sensor ranges. |
Use Scenario: Routing analog outputs from distributed I/O modules to centralized control logic in hazardous-area monitoring cabinets. IC Role / Device Role: High-reliability channel selector with fail-safe behavior during power interruption or ground shift events. Use Value: Prevents sensor damage from accidental 24V DC miswiring and sustains 1kΩ input impedance during supply loss to avoid signal source loading. |
| Telemetry Front-Ends | Test Equipment Signal Conditioning |
Use Scenario: Selecting among eight remote RTD or thermocouple inputs in a wireless telemetry node powered by battery or energy harvesting. IC Role / Device Role: Low-power, high-isolation analog switch enabling long-term field deployment without maintenance. Use Value: 7.5mW typical dissipation extends battery life; ±33V overvoltage rating accommodates induced transients on long cable runs. |
Use Scenario: Configuring input signal paths in automated test equipment (ATE) for calibration and functional verification of analog subsystems. IC Role / Device Role: Precision channel selector with sub-2kΩ on-resistance and <200nA off-leakage for traceable metrology-grade measurements. Use Value: Enables accurate gain/offset characterization across multiple DUTs without introducing multiplexer-induced errors or drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HI3-0508A-5Z | Pb-free version of same die and package; identical electrical specs, but uses matte tin plating and annealed termination per RoHS. | Required for new designs targeting lead-free manufacturing; compatible with both SnPb and Pb-free wave soldering (not reflow). | Select HI3-0508A-5Z when RoHS compliance and Pb-free assembly are mandatory; otherwise HI3-0508A-5 remains suitable for legacy SnPb processes. |
| ADG508A | 8-channel CMOS MUX with ±15V signal range but no active overvoltage protection; max analog overvoltage limited to ±20V absolute rating. | Lacks fault isolation and fail-safe behavior - unsuitable where external equipment may impose >±20V transients or sustained overvoltage. | Choose ADG508A only in benign, fully controlled lab environments; HI3-0508A-5 is preferred for field-deployed or industrial systems requiring robustness. |
Compared with HI3-0508A-5Z, the base HI3-0508A-5 offers identical performance with SnPb-compatible finish, while ADG508A trades overvoltage resilience for lower cost and wider availability - making HI3-0508A-5 the optimal choice when field reliability and fault tolerance are design priorities.
Availability
HI3-0508A-5 is available at Aetrix Electronics and suitable for data acquisition systems, industrial controls, and telemetry front-ends requiring stable component supply across extended product lifecycles.
Supply support for HI3-0508A-5 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 industrial, aerospace, and defense applications.
The HI-508A family was developed specifically for ruggedized analog signal routing in environments with unpredictable external connections, emphasizing overvoltage survivability, channel isolation, and supply-failure resilience.
FAQ
What is the maximum continuous analog overvoltage rating for HI3-0508A-5?
The HI3-0508A-5 supports continuous ±33V analog overvoltage relative to its ±15V supplies without damage or signal path disruption. This is enabled by active clamp circuitry and dielectric isolation, allowing safe operation when interfacing with externally powered equipment or miswired field devices.
Does HI3-0508A-5 require external pull-up resistors on its address or enable pins?
No, HI3-0508A-5 does not require external pull-up resistors. Its digital inputs (A0, A1, A2, EN) are TTL/CMOS compatible with 0.8V low and 4.0V high thresholds, and internal level-shifting allows direct connection to standard microcontroller or FPGA I/O pins operating at 5V or 3.3V logic levels.
What is the on-resistance specification for HI3-0508A-5 over its full operating temperature range?
The HI3-0508A-5 specifies on-resistance of 1.5kΩ typical and 2.0kΩ maximum across the full 0°C to +75°C operating range. This value is measured at ±10V analog input and +100μA load current, ensuring predictable gain error and minimal voltage drop in precision analog paths.
How does HI3-0508A-5 behave during loss of analog supply voltage?
When either +VSUPPLY or –VSUPPLY is lost, HI3-0508A-5 enters fail-safe mode: each analog input presents approximately 1kΩ resistance to protect external signal sources from short-circuit current, and no latch-up occurs due to its dielectrically isolated CMOS process.
Is HI3-0508A-5 pin-compatible with other members of the HI-50x series such as HI3-0506A-5 or HI3-0507A-5?
No, HI3-0508A-5 is not pin-compatible with HI3-0506A-5 (28-pin) or HI3-0507A-5 (28-pin differential). It uses a 16-pin PDIP footprint matching only HI-508A and HI-509A variants; pin count, layout, and signal assignment differ across the HI-506A/507A/508A/509A family.
HI3-0508A-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 1.8kOhm
- Channel-to-Channel Matching (ΔRon):
- -
- 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, 25pF
- Current - Leakage (IS(off)) (Max):
- 30pA (Typ)
- Crosstalk:
- -
- Operating Temperature:
- 0°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
HI3-0508A-5 FAQ
1.How can I place an order for HI3-0508A-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HI3-0508A-5 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 HI3-0508A-5 reliable?
The price and inventory of HI3-0508A-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HI3-0508A-5 is usually 5 days.
3.What payment methods are accepted for HI3-0508A-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HI3-0508A-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HI3-0508A-5?
HI3-0508A-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HI3-0508A-5 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 HI3-0508A-5?
For technical support, including HI3-0508A-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HI3-0508A-5 requirements.
6.How does Aetrix verify that HI3-0508A-5 is sourced from the original manufacturer or authorized distributors?
All HI3-0508A-5 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 HI3-0508A-5 meets industry standards.
7.What is the process for return or replacement of HI3-0508A-5?
All HI3-0508A-5 units undergo pre-shipment inspection (PSI). If there is an issue with HI3-0508A-5, 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 HI3-0508A-5 part is unused and in its original packaging.
Return procedure for HI3-0508A-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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