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Analog Devices Inc./Maxim Integrated MAX317EPA
- Part No.:
- MAX317EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX317EPA.pdf
- Description:
- IC SWITCH SPST-NC X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,046
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Product details
Overview
MAX317EPA from Maxim Integrated is a precision CMOS single-pole single-throw (SPST) analog switch with normally closed (NC) configuration, 8-pin plastic DIP package, -40°C to +85°C operating temperature range, <35Ω maximum on-resistance, and ±2000V ESD rating. It enables rail-to-rail analog signal switching in battery-powered test equipment and military radio front-ends where low charge injection (<10pC) and sub-145ns turn-off time are critical.
For engineers reviewing the MAX317EPA datasheet, MAX317EPA pinout, MAX317EPA application, or MAX317EPA equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), flat on-resistance over signal range (∆3Ω max), dual-supply operation (±4.5V to ±20V), TTL/CMOS logic compatibility, and leakage <6nA at +85°C.
Technical Context
The MAX317EPA implements a silicon-gate CMOS transmission gate architecture optimized for precision analog signal routing. Its internal structure ensures matched channel resistance and minimal charge injection by balancing parasitic capacitances across the switch path.
It supports both bipolar (±4.5V to ±20V) and single-supply (+10V to +30V) operation, with logic-level input referenced to VL and analog signal paths isolated between V+ and V– rails. The NC configuration means COM connects to NC when IN is low, and disconnects when IN is high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | <35Ω max - ensures minimal voltage drop and signal attenuation in precision analog paths |
| On Resistance Match | <2Ω between channels - guarantees consistent gain/attenuation across multi-channel systems |
| Charge Injection | <10pC - prevents sampling errors in sample-and-hold circuits and ADC front-ends |
| Off-Leakage Current | <6nA at +85°C - maintains signal integrity in high-impedance sensor interfaces |
| Switching Speed | Turn-off <145ns - supports fast multiplexing in real-time guidance and control systems |
| ESD Rating | >±2000V - provides robust handling in manufacturing and field-deployed military radios |
| Analog Signal Range | ±15V typical - enables rail-to-rail operation with ±15V supplies without clipping |
Pinout & Package
MAX317EPA uses an 8-pin plastic DIP (0.300″ wide) package per JEDEC MS-001, with lead pitch 0.100″ and body dimensions 0.300″ × 0.400″. Pin 1 is COM (analog common terminal); Pin 2 is N.C. (no internal connection); Pin 3 is GND (logic ground); Pin 4 is V+ (positive analog supply); Pin 5 is VL (logic supply); Pin 6 is IN (digital control input); Pin 7 is V– (negative analog supply); Pin 8 is NC (normally closed analog terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Primary signal path node; connects to NC when IN = low (NC state) |
| 2 - N.C. | No connect | Unbonded pad; must be left floating or tied to GND per layout best practice |
| 3 - GND | Logic ground reference | Reference for VL and IN signals; separate from analog ground planes |
| 4 - V+ | Positive analog supply | Sets upper analog signal limit; must be ≥ |V–| + 2V for safe operation |
| 5 - VL | Logic supply input | Defines logic threshold; 5V for TTL compatibility, V+ for CMOS levels |
| 6 - IN | Digital control input | Active-low logic sense: IN = low → COM–NC closed; IN = high → open |
| 7 - V– | Negative analog supply | Sets lower analog signal limit; must not exceed V+ – 44V |
| 8 - NC | Normally closed analog terminal | Connected to COM when IN = low; disconnected when IN = high |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog handling | Supports ±15V signal swing with ±15V supplies - eliminates level-shifting in wide-dynamic-range systems |
| Guaranteed on-resistance flatness | ∆3Ω max over full analog range - preserves linearity in precision instrumentation amplifiers |
| Bipolar and single-supply operation | Operates from ±4.5V to ±20V or +10V to +30V - simplifies power architecture in mixed-signal PCBs |
| TTL/CMOS logic compatibility | IN accepts 0.8V/2.4V thresholds with VL = 5V - interoperable with legacy microcontrollers and FPGAs |
| Low power consumption | 35µW typical - extends battery life in portable PBX and handheld test gear |
Applications
| Sample-and-Hold Circuits | Guidance and Control Systems |
|---|---|
|
Use Scenario: Capturing transient analog sensor outputs (e.g., inertial measurement unit signals) before ADC conversion. IC Role / Device Role / Timing Role: Precision SPST NC switch isolating hold capacitor during acquisition phase. Use Value: Low 10pC charge injection prevents voltage step error on hold capacitor; <145ns turn-off ensures clean hold timing. |
Use Scenario: Multiplexing feedback signals from multiple gyros/accelerometers into a central flight controller. IC Role / Device Role / Timing Role: High-reliability analog switch routing sensor data under real-time OS scheduling. Use Value: Guaranteed <2Ω on-resistance match minimizes gain mismatch across channels; -40°C to +85°C rating supports avionics thermal cycling. |
| Heads-Up Displays (HUD) | Military Radios |
|
Use Scenario: Switching video sync pulses and analog RGB signals between primary and backup display drivers. IC Role / Device Role / Timing Role: Fast-switching NC path enabling seamless failover without visible flicker. Use Value: <175ns turn-on time ensures sub-microsecond switchover; ±2000V ESD protects against cockpit static discharge. |
Use Scenario: Routing RF front-end IF signals between receive chains and calibration paths in SDR transceivers. IC Role / Device Role / Timing Role: Low-leakage analog switch enabling precise gain calibration without DC offset drift. Use Value: <6nA off-leakage at +85°C maintains calibration accuracy in sealed, high-temp radio enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX317CPA | Same electrical specs but 0°C to +70°C temp range; identical pinout and package | Not rated for extended industrial or automotive ambient conditions | Select MAX317CPA only for commercial-grade indoor equipment with controlled thermal environments |
| ADG1419BRNZ | SPST NC switch with 0.7Ω typical RON, but higher 25pC charge injection and no guaranteed flatness spec | Higher precision RON match but less suitable for sample-and-hold due to charge injection | Prefer ADG1419BRNZ where ultra-low on-resistance dominates over charge injection sensitivity |
Compared with MAX317CPA, the MAX317EPA adds extended temperature support without sacrificing matching or leakage performance; versus ADG1419BRNZ, it trades lower RON for significantly reduced charge injection-critical for precision sampling.
Availability
MAX317EPA is available at Aetrix Electronics and suitable for military radios, guidance and control systems, and battery-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX317EPA 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for demanding industrial, communications, and aerospace applications.
The MAX317 series belongs to Maxim's precision analog switch product line, engineered for low distortion, high channel matching, and robust operation in mission-critical signal routing applications.
FAQ
What is the maximum analog signal voltage range supported by the MAX317EPA?
The MAX317EPA supports an analog signal range up to ±15V with ±15V supplies, limited by the absolute maximum rating of V+ – V– ≤ +44V. At ±15V operation, the guaranteed analog-signal range is –15V to +15V, enabling true rail-to-rail signal handling without clipping in precision instrumentation circuits using the MAX317EPA.
Does the MAX317EPA require separate analog and digital ground planes?
Yes - the MAX317EPA separates logic (GND, VL) and analog (V+, V–) supply domains. GND serves only as logic reference; analog signals flow between COM, NC, V+, and V–. Best practice requires physically isolated ground planes joined at a single point near the device to prevent noise coupling, especially in sensitive sample-and-hold applications using the MAX317EPA.
Can the MAX317EPA operate from a single +12V supply?
Yes - the MAX317EPA supports single-supply operation from +10V to +30V. When using +12V, tie V– to GND and set VL = +5V for TTL compatibility. The analog signal range becomes 0V to +12V, and on-resistance increases slightly (typ. 40Ω at VCOM = 3.8V), as confirmed in the single-supply electrical characteristics table for the MAX317EPA.
What is the logic polarity relationship between IN and the NC switch state in the MAX317EPA?
The MAX317EPA has active-low logic control: when IN is low (≤0.8V), the COM–NC path is closed (normally closed state); when IN is high (≥2.4V), the path opens. This is explicitly shown in the truth table and functional diagram for MAX317 in the datasheet, and applies identically to the MAX317EPA variant.
Is the MAX317EPA pin-compatible with other variants like MAX318EPA or MAX319EPA?
No - the MAX317EPA (SPST NC) has different pin assignments than MAX318EPA (SPST NO) and MAX319EPA (SPDT). Specifically, Pin 8 is NC on MAX317EPA but COM on MAX318EPA and NO on MAX319EPA. Swapping them without board revision will cause incorrect switching behavior or damage; each variant requires its own layout per the pin configuration diagrams in the MAX317EPA datasheet.
MAX317EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX317EPA FAQ
1.How can I place an order for MAX317EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX317EPA 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 MAX317EPA reliable?
The price and inventory of MAX317EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX317EPA is usually 5 days.
3.What payment methods are accepted for MAX317EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX317EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX317EPA?
MAX317EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX317EPA 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 MAX317EPA?
For technical support, including MAX317EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX317EPA requirements.
6.How does Aetrix verify that MAX317EPA is sourced from the original manufacturer or authorized distributors?
All MAX317EPA 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 MAX317EPA meets industry standards.
7.What is the process for return or replacement of MAX317EPA?
All MAX317EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX317EPA, 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 MAX317EPA part is unused and in its original packaging.
Return procedure for MAX317EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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