My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX318CPA
- Part No.:
- MAX318CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX318CPA.pdf
- Description:
- IC SWITCH SPST-NO X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX318CPA from Maxim Integrated is a precision CMOS single-pole single-throw (SPST) analog switch with normally open (NO) configuration, 35Ω maximum on-resistance, <10pC charge injection, and ±4.5V to ±20V bipolar or +10V to +30V single-supply operation. It enables rail-to-rail analog signal routing in sample-and-hold circuits and test equipment where low leakage and fast switching are critical.
For engineers reviewing the MAX318CPA datasheet, MAX318CPA pinout, MAX318CPA application, or MAX318CPA equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative parts - all grounded in Maxim's official 1994 datasheet Rev 1.
Technical Context
The MAX318CPA implements a silicon-gate CMOS transmission gate architecture optimized for low distortion and minimal signal-dependent on-resistance variation. Its guaranteed ≤2Ω on-resistance match between channels and ≤3Ω flatness over full analog range support precision multiplexing in instrumentation-grade signal paths.
It features TTL/CMOS-compatible logic inputs, operates across 0°C to +70°C, and maintains sub-6nA off-leakage at +85°C. The device supports rail-to-rail analog signals up to ±15.5V with 44V breakdown voltage, enabling robust performance in guidance systems and military radios without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | ≤35Ω max - ensures minimal signal attenuation and gain error in precision analog paths |
| On Resistance Match | ≤2Ω between channels - enables matched gain/phase in differential or dual-channel sampling |
| Charge Injection | ≤10pC - reduces voltage glitch and settling time in sample-and-hold front-ends |
| Off-Leakage Current | <6nA at +85°C - preserves accuracy in high-impedance sensor interfaces and long-hold applications |
| Switching Speed | tON <175ns, tOFF <145ns - supports >5MHz sampling rates in automated test equipment |
| Analog Signal Range | ±15.5V with ±16.5V supplies - allows full-rail operation with standard ±15V power rails |
| ESD Rating | >±2000V per Method 3015.7 - improves handling robustness during PCB assembly and field service |
Pinout & Package
MAX318CPA is housed in an 8-pin plastic DIP (dual-in-line package), 0.300-inch width, with through-hole mounting and industry-standard footprint per Maxim's 21-0043A mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog-switch common terminal - connects to signal source or load in SPST NO topology |
| 2 | N.C. | No connect - not internally bonded; must be left unconnected on PCB |
| 3 | GND | Logic ground reference - ties digital control logic to system ground plane |
| 4 | V+ | Analog positive supply input - sets upper rail for analog signal range (up to +44V vs V−) |
| 5 | VL | Logic-level positive supply - powers internal logic; TTL/CMOS compatible at 5V |
| 6 | IN | Digital control input - high = switch closed (NO path enabled); low = open |
| 7 | V− | Analog negative supply input - sets lower rail for analog signal range (e.g., −15V) |
| 8 | NO | Analog-switch normally open terminal - only conducts when IN = high |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog handling | Supports signals from V− to V+ (e.g., −15V to +15V) without clipping or distortion |
| Guaranteed flat on-resistance | ΔRON ≤3Ω over full analog range - minimizes harmonic distortion in AC-coupled paths |
| Bipolar or single-supply operation | Operates from ±4.5V to ±20V or +10V to +30V - simplifies power architecture in mixed-signal systems |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V logic thresholds - interfaces directly with microcontrollers and FPGAs |
| Low power consumption | 35µW typical - enables battery-powered portable test instruments and remote sensors |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Capturing transient analog waveforms in automated test systems with minimal aperture error. IC Role / Device Role / Timing Role: Precision SPST switch controlling hold capacitor charging path with sub-10pC charge injection. Use Value: Enables ≤0.01% gain error and <1µs settling after sampling due to matched RON and low leakage. |
Use Scenario: Signal routing in benchtop multimeters and signal analyzers requiring channel isolation and repeatability. IC Role / Device Role / Timing Role: Analog path selector with 68dB off-isolation and 85dB crosstalk rejection at 1MHz. Use Value: Maintains measurement integrity across multiple input ranges without calibration drift from leakage or coupling. |
| Military Radios | Guidance and Control Systems |
Use Scenario: Antenna switching and IF signal gating in ruggedized HF/VHF transceivers operating across −40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog switch with >±2000V ESD protection and extended temperature grade variants. Use Value: Survives harsh ESD events and thermal cycling without parameter shift, ensuring mission-critical uptime. |
Use Scenario: Sensor signal conditioning in inertial navigation units where signal fidelity directly impacts position accuracy. IC Role / Device Role / Timing Role: Low-distortion analog multiplexer selecting accelerometer or gyroscope outputs before ADC conversion. Use Value: Delivers <0.001% THD+N via flat RON and rail-to-rail swing, preserving dynamic range in feedback loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRZ | Single SPST NO, 0.9Ω typical RON, but requires ≥±4.5V supplies and has higher 15pC charge injection | Better RON for low-voltage precision, but less suitable for ±15V rail-to-rail systems | Select ADG1419BRZ only if RON <1Ω is mandatory and charge injection tolerance exceeds 10pC |
| TS5A23157DGSR | SPST NO, 0.65Ω RON, 5V-only single supply, 30pC charge injection, no bipolar support | Optimized for low-voltage consumer electronics, not military or industrial analog signal chains | Choose TS5A23157DGSR for cost-sensitive 3.3V/5V systems where ±15V operation is unnecessary |
Compared with MAX318CPA, ADG1419BRZ offers lower on-resistance but sacrifices rail-to-rail capability and ESD robustness, while TS5A23157DGSR trades bipolar flexibility and precision for integration density and cost - making MAX318CPA uniquely suited for legacy ±15V instrumentation and defense platforms.
Availability
MAX318CPA is available at Aetrix Electronics and suitable for sample-and-hold circuits, test equipment, and military radio designs requiring stable component supply across extended lifecycle planning.
Supply support for MAX318CPA 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) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and defense markets.
The MAX317/MAX318/MAX319 family was designed specifically for precision analog signal routing in environments demanding low distortion, high channel matching, and robust supply flexibility - targeting instrumentation, aerospace, and military applications.
FAQ
What is the operating temperature range for MAX318CPA?
The MAX318CPA is rated for 0°C to +70°C ambient operation, as confirmed by Maxim's ordering information table. This commercial-grade temperature range aligns with its "C" suffix designation and makes it suitable for lab equipment and non-military industrial systems. For extended-range alternatives, consider MAX318EPA (−40°C to +85°C) or MAX318MJA (−55°C to +125°C).
Does MAX318CPA support single-supply operation?
Yes, MAX318CPA supports single-supply operation from +10V to +30V, as explicitly stated in the Features section and verified in the Single-Supply Electrical Characteristics table. When using single supply, V− must be tied to ground, and VL should be set to 5V for TTL compatibility or to V+ for CMOS logic levels - per Maxim's Applications Information guidance.
What is the maximum analog signal voltage the MAX318CPA can handle?
MAX318CPA supports analog signals from V− to V+, with absolute maximum ratings specifying V+ up to +44V relative to V−. Under standard ±15V supplies, it reliably handles ±15.5V signals - confirmed in the Electrical Characteristics table under "Analog-Signal Range" with VCOM, VNO, VNC limits.
Is MAX318CPA pin-compatible with MAX317CPA or MAX319CPA?
No, MAX318CPA is not pin-compatible with MAX317CPA or MAX319CPA. While all three share the same 8-pin DIP package, their pin functions differ: MAX317CPA uses Pin 8 as NC and Pin 2 as NC, whereas MAX318CPA uses Pin 8 as NO and Pin 2 as N.C.; MAX319CPA assigns Pin 2 to NC and Pin 8 to COM. This functional pinout divergence prevents direct substitution without PCB redesign.
What logic families are compatible with MAX318CPA's IN pin?
MAX318CPA's IN pin is fully compatible with both TTL and CMOS logic families, as confirmed by its specified logic input thresholds (VINL ≤ 0.8V, VINH ≥ 2.4V) and explicit "TTL-/CMOS-Logic Compatible" feature listing. Input current remains below ±0.5µA across temperature, ensuring reliable interfacing with microcontrollers, CPLDs, and discrete logic without pull-up/down requirements.
MAX318CPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX318CPA FAQ
1.How can I place an order for MAX318CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX318CPA 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 MAX318CPA reliable?
The price and inventory of MAX318CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX318CPA is usually 5 days.
3.What payment methods are accepted for MAX318CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX318CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX318CPA?
MAX318CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX318CPA 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 MAX318CPA?
For technical support, including MAX318CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX318CPA requirements.
6.How does Aetrix verify that MAX318CPA is sourced from the original manufacturer or authorized distributors?
All MAX318CPA 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 MAX318CPA meets industry standards.
7.What is the process for return or replacement of MAX318CPA?
All MAX318CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX318CPA, 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 MAX318CPA part is unused and in its original packaging.
Return procedure for MAX318CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX318CPA 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
