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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:2,087
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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-accuracy signal routing in bipolar or single-supply systems. It delivers <35Ω max on-resistance, <2Ω channel-to-channel match, <15pC charge injection, <6nA off-leakage at +85°C, and sub-150ns turn-on time-enabling low-distortion switching in test equipment and military radios.
For engineers reviewing the MAX305CSE datasheet, MAX305CSE pinout, MAX305CSE application, or MAX305CSE equivalent, key selection criteria include rail-to-rail analog signal handling (±4.5V to ±20V supplies), guaranteed on-resistance flatness (Δ5Ω max), CMOS/TTL-compatible logic inputs, and 16-pin narrow SOIC packaging for space-constrained PCB layouts.
Technical Context
The MAX305CSE implements two independent SPST switches fabricated using Maxim's silicon-gate process, ensuring matched on-resistance (<2Ω) and ultra-low charge injection (15pC typ). Its architecture supports true rail-to-rail analog signal switching across V− to V+, with no internal level-shifting circuitry required.
Logic control is provided via separate IN1/IN2 inputs referenced to VL = +5V, enabling compatibility with TTL or CMOS logic regardless of analog supply rails. The device maintains fast switching (tON < 150ns, tOFF < 100ns) while drawing only 35µW typical power and exhibiting <12pF off-capacitance per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 35Ω - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Match (max) | 2Ω - guarantees matched gain/attenuation across dual channels in differential or sampling circuits |
| Charge Injection (max) | 15pC - limits voltage glitch at COM node during switching, critical for sample-and-hold accuracy |
| Off-Leakage Current (max @ +85°C) | 6nA - preserves signal integrity in high-impedance sensor or timing circuits over temperature |
| Supply Range | ±4.5V to ±20V bipolar or +10V to +30V single - enables direct interfacing with op-amps, DACs, and ADCs without level shifters |
| Switching Speed | tON < 150ns, tOFF < 100ns - supports multiplexing of signals up to ~3MHz without significant settling delay |
| Rail-to-Rail Analog Range | V− to V+ - allows full utilization of analog supply headroom, e.g., ±15V signals pass unclipped |
Pinout & Package
MAX305CSE is housed in a 16-pin narrow SOIC (S16-2) package, 7.5mm × 10.3mm body, 1.27mm pitch, with exposed pad not present. Pin functions are electrically validated per Maxim's official pin description table for MAX305 DIP/SO variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Analog common terminals - serve as bidirectional signal paths connected to load or source |
| 9, 16 | NO1, NO2 | Normally open switch outputs - conduct only when corresponding INx = logic high |
| 10, 15 | IN2, IN1 | Digital control inputs - TTL/CMOS compatible; referenced to VL, not V+ or GND |
| 11 | V+ | Positive analog supply - connects to substrate; must be powered before VL/V− to avoid latch-up |
| 12 | VL | Logic supply input - fixed at +5V for TTL compatibility; ties to V+ only if CMOS logic levels are acceptable |
| 13 | GND | Negative analog supply reference - serves as return path for V−; not digital ground |
| 14 | V− | Negative analog supply - completes bipolar rail; supports rail-to-rail signal swing down to V− |
| 2–7 | N.C. | No internal connection - floating pins; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed on-resistance flatness | Δ5Ω max over full analog range - eliminates gain nonlinearity in precision instrumentation front-ends |
| Low off-isolation degradation | 72dB off-isolation at 1MHz - suppresses crosstalk between inactive channels in dense multiplexers |
| Ultra-low power operation | 35µW typical quiescent power - enables use in battery-operated portable test gear without thermal derating |
| Bipolar/single-supply flexibility | Operates identically across ±4.5V to ±20V or +10V to +30V - simplifies system-level power architecture |
| ESD-robust logic interface | ±2kV HBM on IN/INx pins - withstands handling and board-level ESD events without external protection |
Applications
| Test Equipment Signal Routing | Military Radio Channel Selection |
|---|---|
Use Scenario: Multiplexing calibrated reference voltages and sensor inputs in automated test equipment (ATE) mainframes. IC Role / Device Role / Timing Role: Dual SPST analog switch providing low-drift, low-leakage signal path selection under microcontroller control. Use Value: <2Ω on-resistance matching ensures identical gain error across both channels, preserving measurement accuracy during auto-calibration sequences. |
Use Scenario: Selecting between multiple RF front-end filter banks or antenna paths in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: High-speed analog switch enabling rapid reconfiguration of receive/transmit signal chains without mechanical relays. Use Value: <15pC charge injection prevents DC offset shifts in IF amplifiers after switching, maintaining receiver sensitivity and dynamic range. |
| Heads-Up Display (HUD) Video Switching | Guidance System Sensor Interface |
Use Scenario: Routing RGB video signals from multiple sources (e.g., FLIR, GPS overlay, flight data) to a single HUD projection engine. IC Role / Device Role / Timing Role: Dual SPST switch handling baseband analog video with minimal distortion and settling delay. Use Value: <12pF off-capacitance minimizes high-frequency roll-off and ghosting artifacts in 640×480 NTSC/PAL video paths. |
Use Scenario: Isolating inertial measurement unit (IMU) analog outputs during self-test or fault recovery in missile guidance electronics. IC Role / Device Role / Timing Role: Precision analog switch acting as a fail-safe signal gate between MEMS gyros/accelerometers and ADC front-end. Use Value: <6nA off-leakage at +85°C prevents bias current errors in high-impedance sigma-delta ADC inputs, ensuring <0.1° heading accuracy. |
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 | Single-supply only (+5V to +40V); higher RON (1.3Ω typ but 4.5Ω max); 16-TSSOP package | Not rated for −40°C to +85°C operation; lacks bipolar supply support | Select when only single-supply rail exists and lower on-resistance tolerance is acceptable |
| TS5A23157DGSR | Lower voltage rating (5.5V max); 10-bit resolution-equivalent leakage (100nA max @ +85°C); 10-pin VSSOP | Unsuitable for ±15V signal paths; intended for portable consumer audio/video | Choose only for low-voltage, cost-sensitive consumer designs-not industrial/military use |
Compared with ADG1419BRUZ and TS5A23157DGSR, the MAX305CSE uniquely supports true bipolar operation, guarantees sub-2Ω channel matching, and maintains <6nA leakage at extended temperature-making it the sole option for high-reliability, wide-supply analog multiplexing where signal fidelity and thermal stability are non-negotiable.
Availability
MAX305CSE is available at Aetrix Electronics and suitable for test equipment, military radio, heads-up display, and guidance system applications requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.
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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and defense markets.
The MAX301/MAX303/MAX305 family was engineered specifically for precision analog signal routing in environments demanding low distortion, tight channel matching, and robust operation across wide temperature and supply ranges.
FAQ
What is the maximum analog signal voltage range supported by the MAX305CSE?
The MAX305CSE supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings of ±44V on V+ and V−. When operated with ±15V supplies, it reliably switches signals spanning −15V to +15V without clipping or distortion-verified across the full 0°C to +70°C commercial temperature range specified for the MAX305CSE.
Does the MAX305CSE require separate logic and analog supplies?
Yes-the MAX305CSE requires three distinct supply connections: V+ and V− for the analog signal path, and VL (typically +5V) for the logic interface. VL must be decoupled independently and powered after V+ to prevent latch-up. This separation ensures TTL/CMOS logic compatibility while maintaining full analog rail utilization in the MAX305CSE.
Can the MAX305CSE operate from a single positive supply?
Yes-the MAX305CSE operates from a single +10V to +30V supply, with V− tied to ground. In this configuration, analog signals swing from 0V to V+, and the device retains all key specs including <35Ω on-resistance, <15pC charge injection, and <100ns turn-off time-confirmed in the MAX305CSE electrical characteristics table under single-supply conditions.
What is the guaranteed on-resistance match between the two switches in the MAX305CSE?
The MAX305CSE guarantees on-resistance matching of ≤2Ω between its two SPST channels at +25°C, and ≤3Ω across the full operating temperature range (0°C to +70°C). This specification is measured under matched load conditions and is critical for differential signal integrity and calibration accuracy in the MAX305CSE's target applications.
Is the MAX305CSE pin-compatible with other devices in the MAX30x family?
Yes-the MAX305CSE shares identical pinout and function mapping with MAX301CSE and MAX303CSE in the 16-pin narrow SOIC package (S16-2), including COM1/COM2, NO1/NO2, IN1/IN2, V+, VL, GND, and V− assignments. However, internal switch topology differs: MAX305CSE implements dual SPST (NO), while MAX303CSE is SPDT-requiring logic-level verification before substitution.
MAX305CSE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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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