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Analog Devices Inc./Maxim Integrated MAX305CSE+
- Part No.:
- MAX305CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX305CSE+.pdf
- Description:
- IC SWITCH DPST-NOX2 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
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Product details
Overview
MAX305CSE+ from Maxim Integrated is a precision dual SPST analog switch with normally open (NO) configuration, designed for high-fidelity signal routing in bipolar or single-supply systems. It delivers <35Ω max on-resistance, <2Ω matched RON between channels, and <15pC charge injection - enabling accurate sampling in test equipment and military radios requiring rail-to-rail ±15V analog signal handling.
For engineers reviewing the MAX305CSE+ datasheet, MAX305CSE+ pinout, MAX305CSE+ application, or MAX305CSE+ equivalent, key selection criteria include guaranteed RON flatness (≤5Ω ΔRON), sub-100ns turn-off time, low +85°C off-leakage (<6nA), and compatibility with ±4.5V to ±20V supplies or +10V to +30V single supply.
Technical Context
The MAX305CSE+ implements two independent SPST switches fabricated using Maxim's silicon-gate process, ensuring low charge injection (15pC typ) and minimal channel-to-channel RON mismatch (<2Ω). Its CMOS/TTL-compatible logic inputs (VL = +5V) drive internal transmission gates without external level shifting.
Each switch supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings up to ±16.5V on analog pins and 44V between V+ and V−. The device maintains stable RON across temperature (±0.5%/°C typ) and analog voltage range, critical for precision sample-and-hold circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | ≤35Ω max at +25°C; ensures minimal signal attenuation in 50Ω–1kΩ impedance paths |
| RON Match Between Channels | ≤2Ω max; enables matched gain/attenuation in differential or dual-path signal chains |
| Charge Injection | ≤15pC; limits voltage glitch on hold capacitors in precision sample-and-hold stages |
| Turn-Off Time (tOFF) | ≤100ns; supports >5MHz switching rates in automated test equipment |
| Off-Leakage Current | ≤6nA at +85°C; preserves DC accuracy in high-impedance sensor front-ends |
| Analog Signal Range | V− to V+; supports true rail-to-rail operation with ±15V supplies or +24V single supply |
| Supply Voltage Range | ±4.5V to ±20V bipolar or +10V to +30V single; simplifies power architecture in mixed-signal systems |
Pinout & Package
MAX305CSE+ uses a 16-pin narrow SOIC (S16-2) package, 7.5mm × 10.3mm body, 1.27mm pitch. Pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals - bidirectional signal path for each SPST switch |
| 9, 16 | NO1, NO2 | Normally open analog outputs - connect to COM only when corresponding IN is high |
| 10, 15 | IN2, IN1 | CMOS/TTL logic inputs - active-high control; VL = +5V required for TTL compatibility |
| 11 | V+ | Positive supply input - substrate connection; must be powered before V− and VL |
| 12 | VL | Logic supply input - fixed +5V reference for input threshold stability |
| 13 | GND | Ground reference - serves as negative supply return in single-supply configurations |
| 14 | V− | Negative supply input - enables bipolar operation; must be sequenced after V+ |
| 2–7 | N.C. | No internal connection - no PCB trace or thermal pad required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports VANA = V− to V+ without clipping - essential for full-scale signal integrity in guidance systems |
| Guaranteed RON flatness | ΔRON ≤5Ω over full analog range - eliminates gain nonlinearity in audio and instrumentation amplifiers |
| Low temperature coefficient | 0.5%/°C typical RON drift - maintains channel matching across −40°C to +85°C industrial environments |
| Bipolar and single-supply operation | Operates identically on ±15V or +24V - reduces BOM count in multi-voltage platforms like PBX and military radios |
| Low power consumption | 35µW typical - extends battery life in portable test gear and handheld communication systems |
Applications
| Test Equipment Signal Routing | Military Radio Front-End Switching |
|---|---|
Use Scenario: Multiplexing calibration signals into ADC inputs during self-test sequences in automated test equipment. IC Role / Device Role / Timing Role: Dual SPST switch isolating reference voltages and sensor inputs with sub-100ns timing control. Use Value: <2Ω RON match ensures identical gain error across calibration paths, improving measurement repeatability to ±0.01%. |
Use Scenario: Selecting between antenna receive paths and transmit feedback loops in SDR-based tactical radios. IC Role / Device Role / Timing Role: High-speed analog switch enabling fast RF front-end reconfiguration under digital control. Use Value: 44V breakdown rating and rail-to-rail capability allow direct interface with ±12V LNA and PA bias rails without level-shifting. |
| Heads-Up Display (HUD) Video Path | PBX Analog Line Interface |
Use Scenario: Routing RGB video signals from multiple sources to HUD projection optics in avionics systems. IC Role / Device Role / Timing Role: Precision analog switch preserving signal fidelity across 0–5V video swing with minimal crosstalk. Use Value: 90dB crosstalk rejection at 1MHz prevents ghosting or color bleed between adjacent video channels. |
Use Scenario: Isolating ring detect, tip/ring sense, and codec interfaces in carrier-grade PBX line cards. IC Role / Device Role / Timing Role: Dual SPST switch managing analog telephony signal paths under microcontroller control. Use Value: <6nA off-leakage at +85°C prevents false ring detection and maintains loop supervision accuracy over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRUZ | Higher RON (1.3Ω typ), wider supply (±15V to ±22V), but higher charge injection (17pC) | Optimized for low-RON in precision DAC buffers; less suitable for ultra-low-glitch sample-and-hold | Select ADG1419BRUZ when lower on-resistance outweighs charge injection sensitivity |
| TS5A23157DCKR | Lower voltage rating (5.5V max), smaller 6-pin SC70 package, higher leakage (>100nA at +85°C) | Targeted at low-voltage portable electronics; not rated for ±15V or industrial temperature range | Select TS5A23157DCKR only for cost-sensitive, low-voltage consumer designs |
Compared with MAX305CSE+, ADG1419BRUZ offers lower RON but trades off charge injection performance, while TS5A23157DCKR sacrifices voltage range and leakage specs for size and cost - making MAX305CSE+ the optimal choice for high-accuracy, wide-supply, temperature-stable analog routing.
Availability
MAX305CSE+ is available at Aetrix Electronics and suitable for test equipment, military radio systems, heads-up displays, and PBX line interface applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX305CSE+ 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 precision analog, mixed-signal, and high-reliability ICs for demanding industrial, automotive, and defense applications.
The MAX301/MAX303/MAX305 family was engineered specifically for high-speed, low-distortion analog signal routing in systems requiring guaranteed RON matching, ultra-low charge injection, and robust bipolar supply operation.
FAQ
What is the maximum allowable supply voltage difference for MAX305CSE+?
The MAX305CSE+ has an absolute maximum V+ to V− rating of 44V. This allows operation with ±20V supplies (40V differential) or +30V/0V single supply. Exceeding 44V risks permanent damage due to junction breakdown. Always observe recommended power sequencing: V+ first, then VL, then V− and logic inputs.
Does MAX305CSE+ support TTL-level logic inputs without external level shifting?
Yes - MAX305CSE+ supports TTL-compatible inputs when VL is tied to +5V. With VL = +5V, the device accepts VINH ≥ +2.4V and VINL ≤ +0.8V directly, eliminating need for level translators. If VL connects to V+ or another voltage, CMOS thresholds apply instead.
Can MAX305CSE+ be used in a single-supply configuration with V− grounded?
Yes - MAX305CSE+ operates with V− = GND and V+ = +10V to +30V. In this mode, analog signals swing from 0V to V+, maintaining rail-to-rail capability. Ensure VL remains at +5V for TTL compatibility, and verify that all analog inputs stay within V− − 2V to V+ + 2V per absolute maximum ratings.
What is the guaranteed on-resistance flatness specification for MAX305CSE+?
MAX305CSE+ guarantees on-resistance flatness (ΔRON) of ≤5Ω over the full analog signal range (V− to V+) and across the operating temperature range (0°C to +70°C for C-grade). This ensures consistent signal attenuation regardless of input voltage level - critical for precision instrumentation.
How does charge injection performance impact sample-and-hold circuit design with MAX305CSE+?
MAX305CSE+ guarantees ≤15pC charge injection, which directly determines hold-step error in sample-and-hold circuits. For a 10nF hold capacitor, this yields ≤1.5mV glitch - enabling 12-bit accuracy without additional correction. Layout best practices (minimizing trace capacitance to COM/NO) further reduce effective injection.
MAX305CSE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- DPST - NO
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 10pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX305CSE+ FAQ
1.How can I place an order for MAX305CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX305CSE+ 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 MAX305CSE+ reliable?
The price and inventory of MAX305CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX305CSE+ is usually 5 days.
3.What payment methods are accepted for MAX305CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX305CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX305CSE+?
MAX305CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX305CSE+ 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 MAX305CSE+?
For technical support, including MAX305CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX305CSE+ requirements.
6.How does Aetrix verify that MAX305CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX305CSE+ 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 MAX305CSE+ meets industry standards.
7.What is the process for return or replacement of MAX305CSE+?
All MAX305CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX305CSE+, 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 MAX305CSE+ part is unused and in its original packaging.
Return procedure for MAX305CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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