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Analog Devices Inc./Maxim Integrated MAX305CPE
- Part No.:
- MAX305CPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX305CPE.pdf
- Description:
- IC SWITCH DPST-NOX2 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,858
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Product details
Overview
MAX305CPE from Maxim Integrated is a precision dual SPST analog switch in 16-pin plastic DIP, designed for high-accuracy signal routing in bipolar or single-supply systems. It features <35Ω max on-resistance, <2Ω channel-to-channel match, <15pC charge injection, <6nA off-leakage at +85°C, and rail-to-rail analog signal handling (V− to V+). It serves in sample-and-hold circuits and test equipment requiring low distortion and fast switching.
For engineers reviewing the MAX305CPE datasheet, MAX305CPE pinout, MAX305CPE application, or MAX305CPE equivalent, key selection criteria include guaranteed on-resistance flatness (Δ3Ω max), TTL/CMOS-compatible logic inputs, ±4.5V to ±20V or +10V to +30V supply flexibility, and low leakage across temperature.
Technical Context
The MAX305CPE implements two independent normally-open (NO) SPST switches fabricated using Maxim's silicon-gate process, enabling high system accuracy with matched performance. Its architecture guarantees low charge injection (≤15pC) and flat on-resistance over full analog range (ΔRON ≤ 3Ω at +25°C, ≤5Ω over temperature).
It supports dual-supply operation (±4.5V to ±20V) or single positive supply (+10V to +30V), with CMOS/TTL-compatible logic inputs referenced to VL = +5V. Analog signal range spans rail-to-rail (V− to V+), enabled by 44V breakdown voltage and internal clamping diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 35Ω - Ensures minimal signal attenuation and gain error in precision signal paths. |
| On-Resistance Match (max) | 2Ω - Enables accurate differential or ratiometric measurements between channels. |
| Charge Injection (max) | 15pC - Limits voltage glitch on sampled capacitors in sample-and-hold applications. |
| Off-Leakage Current (max) | 6nA at +85°C - Maintains signal integrity in high-impedance, long-integration-time circuits. |
| Switching Speed (tON/tOFF) | <150ns / <100ns - Supports high-throughput data acquisition and multiplexing up to ~5MHz. |
| Analog Signal Range | V− to V+ - Allows full rail-to-rail signal switching without level-shifting circuitry. |
| Supply Voltage Range | ±4.5V to ±20V or +10V to +30V - Provides design flexibility across industrial, test, and military power architectures. |
Pinout & Package
MAX305CPE is housed in a 16-pin plastic DIP (P16-1) package with 0.3-inch width and through-hole mounting. Pin functions are validated per Maxim's official pin configuration diagram for MAX305 (DIP/SO).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals - serve as bidirectional signal paths for each SPST switch. |
| 9, 16 | NO1, NO2 | Normally-open switch terminals - connect to COM only when corresponding IN is high. |
| 10, 15 | IN2, IN1 | Digital control inputs - TTL/CMOS-compatible; active-high logic enables switch closure. |
| 11 | V+ | Positive supply input - connects to substrate; must be ≥ |V−| to maintain 44V breakdown rating. |
| 12 | VL | Logic supply input - fixed at +5V for TTL compatibility; ties to V+ for CMOS-level operation. |
| 13 | GND | Negative supply reference - used as return path for V− in single-supply configurations. |
| 14 | V− | Negative supply input - sets lower analog rail; clamped internally to prevent damage beyond −2V. |
| 2–7 | N.C. | No internal connection - electrically isolated; no routing or thermal consideration required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports V− to V+ signals without clipping or level shifters, simplifying front-end design. |
| Guaranteed on-resistance flatness | ΔRON ≤ 3Ω max over full analog range ensures consistent gain and linearity in precision gain stages. |
| Low charge injection | ≤15pC minimizes hold-mode voltage step in sample-and-hold circuits, reducing settling time and error. |
| TTL/CMOS logic compatibility | Operates with standard logic families via dedicated VL pin, eliminating interface level-shifters. |
| High supply voltage tolerance | 44V V+–V− rating enables use in ±15V, ±20V, or +24V systems without external protection. |
Applications
| Sample-and-Hold Circuits | Test Equipment Signal Routing |
|---|---|
Use Scenario: Capturing and holding analog sensor outputs for ADC conversion in high-resolution data loggers. IC Role / Device Role / Timing Role: Dual SPST switch isolates sampling capacitor during hold phase; precise RON match maintains channel consistency. Use Value: Low 15pC charge injection prevents hold-mode voltage error; <6nA leakage preserves hold voltage for >10ms intervals. |
Use Scenario: Multiplexing calibrated reference signals into automated test instruments with multiple measurement channels. IC Role / Device Role / Timing Role: Precision analog switch routes references with minimal gain error and crosstalk between channels. Use Value: 72dB off-isolation and 90dB crosstalk suppression ensure reference integrity across concurrent measurements. |
| Military Radio Front-End Switching | Battery-Operated Portable Instrumentation |
Use Scenario: Selecting between antenna paths or filter banks in ruggedized HF/VHF transceivers operating across −40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability SPST switch enables RF front-end reconfiguration under wide temperature and supply variation. Use Value: Guaranteed RON match <2Ω and leakage <6nA at +85°C ensure stable insertion loss and dynamic range over life. |
Use Scenario: Power-gating analog signal paths in handheld multimeters or portable oscilloscopes to extend battery life. IC Role / Device Role / Timing Role: Low-quiescent-power analog switch disconnects unused signal chains while preserving signal fidelity. Use Value: 35µW typical power consumption and <1µA supply currents minimize standby drain without sacrificing speed. |
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 |
|---|---|---|---|
| ADG201AKNZ | Single-supply only (+10.8V to +16.5V); higher RON (60Ω typ); no guaranteed RON match spec. | Lacks bipolar supply support and channel matching - unsuitable for ratiometric or differential designs. | Select only if single-supply operation suffices and matching is not required. |
| TS5A23157DGSR | Lower voltage rating (5.5V max); CMOS-only logic; 0.9Ω RON but no high-temp leakage guarantee. | Not rated for industrial/military temp ranges or high-voltage analog rails - limited to consumer-grade low-voltage systems. | Choose only for cost-sensitive, low-voltage, commercial applications where leakage and voltage range are non-critical. |
Compared with ADG201AKNZ and TS5A23157DGSR, the MAX305CPE uniquely combines bipolar/single-supply flexibility, guaranteed channel matching, rail-to-rail signal handling up to ±20V, and leakage performance validated to +85°C - making it the only option qualified for precision test and military-grade analog routing.
Availability
MAX305CPE is available at Aetrix Electronics and suitable for sample-and-hold circuits, test equipment signal routing, and military radio front-end switching requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX305CPE 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 precision, reliability, and rugged operation in demanding environments.
The MAX305CPE belongs to Maxim's precision analog switch family, engineered for applications requiring low distortion, matched performance, and robust operation across wide supply and temperature ranges.
FAQ
What is the maximum allowable supply voltage difference for MAX305CPE?
The MAX305CPE supports a maximum V+ to V− differential of 44V, as specified in its Absolute Maximum Ratings. This allows operation at ±20V supplies (40V total) or +30V/0V single supply, with 4V headroom. Exceeding 44V risks permanent damage due to junction breakdown, regardless of individual rail values. The MAX305CPE datasheet explicitly defines this limit and confirms internal clamping diodes activate only within safe margins.
Does MAX305CPE support true rail-to-rail analog signal switching?
Yes, the MAX305CPE supports rail-to-rail analog signal switching from V− to V+, verified by its Electrical Characteristics table (VANA = V− to V+) and Typical Operating Characteristics plots. Signals at V− or V+ are passed with minimal distortion, enabled by 44V breakdown rating and internal ESD protection structures. This capability is intrinsic to the MAX305CPE silicon-gate process and confirmed across all temperature grades.
What is the guaranteed on-resistance match between channels for MAX305CPE?
The MAX305CPE guarantees on-resistance match between its two SPST switches to within 2Ω at +25°C and 3Ω over full operating temperature (0°C to +70°C), as stated in the Electrical Characteristics table under "On-Resistance Match Between Channels". This specification applies specifically to the MAX305CPE grade and is measured under defined conditions (V+ = 15V, V− = −15V), ensuring predictable performance in differential or matched-path applications.
Can MAX305CPE operate with TTL logic inputs without external level shifting?
Yes, the MAX305CPE operates directly with TTL logic inputs when VL is tied to +5V, as confirmed in the "Logic Inputs" section and Electrical Characteristics (VINH = +2.4V, VINL = +0.8V). Its inputs draw <1µA and tolerate standard TTL voltage thresholds without external components. This behavior is guaranteed for the MAX305CPE across its 0°C to +70°C temperature range and is independent of analog supply voltages.
What is the maximum off-leakage current of MAX305CPE at +85°C?
The MAX305CPE guarantees off-leakage current of ≤6nA at +85°C for both NC_(OFF) and NO_(OFF) terminals, as specified in the Electrical Characteristics table under "Off-Leakage Current". This value is tested per standard conditions (VCOM = ±10V, VNC/NO = ±10V) and applies to the C-grade (0°C to +70°C) part operating at elevated ambient - critical for maintaining accuracy in high-impedance sample-and-hold or sensor interfaces.
MAX305CPE 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX305CPE FAQ
1.How can I place an order for MAX305CPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX305CPE 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 MAX305CPE reliable?
The price and inventory of MAX305CPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX305CPE is usually 5 days.
3.What payment methods are accepted for MAX305CPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX305CPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX305CPE?
MAX305CPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX305CPE 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 MAX305CPE?
For technical support, including MAX305CPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX305CPE requirements.
6.How does Aetrix verify that MAX305CPE is sourced from the original manufacturer or authorized distributors?
All MAX305CPE 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 MAX305CPE meets industry standards.
7.What is the process for return or replacement of MAX305CPE?
All MAX305CPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX305CPE, 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 MAX305CPE part is unused and in its original packaging.
Return procedure for MAX305CPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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