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Analog Devices Inc./Maxim Integrated MAX303EJE
- Part No.:
- MAX303EJE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
MAX303EJE.pdf
- Description:
- IC SWITCH SPDTX2 35OHM 16CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:331
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Product details
Overview
MAX303EJE from Maxim Integrated is a precision dual SPDT analog switch with two normally open (NO) and two normally closed (NC) poles, operating from ±4.5V to ±20V bipolar or +10V to +30V single supply. It delivers <35Ω max on-resistance, <2Ω channel-to-channel match, <15pC charge injection, and <6nA off-leakage at +85°C-enabling high-accuracy signal routing in military radios and guidance systems.
For engineers reviewing the MAX303EJE datasheet, MAX303EJE pinout, MAX303EJE application, or MAX303EJE equivalent, key selection criteria include rail-to-rail analog signal handling (V− to V+), guaranteed break-before-make timing (10–20ns), CMOS/TTL logic compatibility, and CERDIP-16 packaging for extended temperature operation (−40°C to +85°C).
Technical Context
The MAX303EJE implements a monolithic silicon-gate CMOS architecture optimized for precision analog switching. Its dual SPDT topology supports independent control of two signal paths with matched on-resistance (<2Ω) and flat ΔRON (<5Ω) across the full analog range (V− to V+), ensuring minimal gain error in multiplexed instrumentation.
It features integrated logic-level translation via dedicated VL pin (fixed +5V), enabling TTL/CMOS input compatibility across full supply ranges. Charge injection is tightly controlled at ≤15pC (typ), critical for sample-and-hold accuracy, while off-isolation exceeds 72dB at 1MHz to suppress crosstalk in dense signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT (2× NO + 2× NC poles) |
| On-Resistance (max) | 35Ω - ensures <0.1% gain error in 1kΩ impedance interfaces |
| On-Resistance Match | ≤2Ω - enables precise ratiometric signal routing without calibration |
| Charge Injection | ≤15pC - limits voltage glitch to <1.5mV on 10nF hold capacitors |
| Off-Leakage (max) | 6nA at +85°C - preserves DC accuracy in high-impedance sensor front-ends |
| Supply Range | ±4.5V to ±20V bipolar or +10V to +30V single - supports rail-to-rail analog signals |
| Switching Speed | tON < 150ns, tOFF < 100ns - suitable for 5MHz multiplexed data acquisition |
Pinout & Package
MAX303EJE is housed in a 16-pin CERDIP (J16-3) package with hermetic ceramic construction for high-reliability operation in extended temperature environments (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Analog common terminals - bidirectional signal path junctions for SPDT switching |
| 2–7 | N.C. | No internal connection - unused pins; must remain unconnected |
| 9, 16 | NC1, NC2 | Analog source terminals - normally closed contacts tied to COM when IN = LOW |
| 10, 15 | IN2, IN1 | Digital control inputs - active-HIGH TTL/CMOS logic controlling switch state |
| 11 | V+ | Positive supply - connects to substrate; sets upper analog rail (up to +30V or +20V) |
| 12 | VL | Logic supply - fixed +5V reference for input threshold stability across supply variations |
| 13 | GND | Negative supply reference - used as ground in single-supply mode; connects to V− in bipolar mode |
| 14 | V− | Negative supply - sets lower analog rail (down to −30V or −20V) |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports continuous analog signals from V− to V+, eliminating clipping in ±15V systems |
| Guaranteed break-before-make | 10–20ns delay prevents momentary shorting during SPDT transition in critical signal paths |
| Low and matched on-resistance | ≤35Ω max with ≤2Ω inter-channel match ensures consistent gain across multiplexed channels |
| Ultra-low charge injection | ≤15pC enables sub-12-bit accuracy in sample-and-hold circuits without external correction |
| High off-isolation | 72dB at 1MHz minimizes crosstalk between adjacent switched signals in dense PCB layouts |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
|
Use Scenario: Signal routing between antenna diversity paths and RF front-end components under wide temperature and vibration conditions. IC Role / Device Role / Timing Role: Dual SPDT analog switch selecting between redundant receive chains with guaranteed break-before-make to prevent RF coupling. Use Value: CERDIP packaging and −40°C to +85°C rating ensure operational reliability in airborne and vehicle-mounted platforms. |
Use Scenario: Multiplexing sensor feedback (gyro, accelerometer) into ADC inputs within inertial measurement units (IMUs). IC Role / Device Role / Timing Role: Precision analog switch providing low-leakage, low-charge-injection signal selection prior to sampling. Use Value: ≤6nA off-leakage at +85°C and ≤15pC charge injection preserve DC accuracy and settling time in closed-loop control loops. |
| Test Equipment | Battery-Operated Systems |
|
Use Scenario: Automated test fixture routing multiple DUT signals to shared instrumentation resources (oscilloscopes, SMUs). IC Role / Device Role / Timing Role: High-speed analog switch enabling rapid reconfiguration of signal paths without mechanical relays. Use Value: <150ns turn-on time supports >5MHz multiplexing rates; low 35µW power consumption reduces thermal load in rack-mounted systems. |
Use Scenario: Low-power portable medical devices requiring precision analog signal conditioning with minimal quiescent current. IC Role / Device Role / Timing Role: Dual SPDT switch managing battery voltage monitoring, sensor biasing, and signal path selection. Use Value: 35µW typical power dissipation and ±4.5V minimum supply enable operation from single Li-ion cells with boost regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRUZ | 8-channel single-pole single-throw (SPST); no NC path; 44Ω RON (max); requires separate logic level translation | Lacks SPDT topology and NC functionality; suited for channel expansion, not pole reversal | Select only if SPST multiplexing suffices and NC path is unnecessary |
| TS5A3157DCKR | Single SPDT; 0.75Ω RON (typ); 5V-only supply; 30pC charge injection; SOT-23-6 package | Lower RON but limited to 5V operation and single channel; unsuitable for bipolar or high-voltage rails | Use only in low-voltage, space-constrained designs where dual-channel and rail-to-rail capability are not required |
Compared with ADG408BRUZ and TS5A3157DCKR, the MAX303EJE uniquely provides dual SPDT topology with NC/NO paths, guaranteed break-before-make timing, and full ±20V rail-to-rail operation-making it irreplaceable in military, aerospace, and high-precision industrial signal routing where topology, voltage range, and timing integrity are non-negotiable.
Availability
MAX303EJE is available at Aetrix Electronics and suitable for military radios, guidance and control systems, test equipment, and battery-operated systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX303EJE 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 semiconductor solutions for demanding industrial, automotive, and defense applications.
The MAX303EJE belongs to Maxim's precision analog switch product line, engineered specifically for high-accuracy, high-speed signal routing in harsh-environment systems where leakage, charge injection, and supply flexibility directly impact measurement integrity.
FAQ
What is the operating temperature range for the MAX303EJE?
The MAX303EJE is rated for operation from −40°C to +85°C. This extended temperature range is validated per the E-grade specification and confirmed in the Ordering Information table, making it suitable for industrial and military applications where ambient conditions exceed commercial-grade limits. The CERDIP package contributes to thermal stability across this range.
Does the MAX303EJE support single-supply operation?
Yes, the MAX303EJE supports single-supply operation from +10V to +30V. In this configuration, V− is connected to GND (pin 13), and analog signals can swing from 0V to V+. The device retains CMOS/TTL logic compatibility via the dedicated VL pin (pin 12), which must be held at +5V regardless of V+ level.
What is the function of the VL pin on the MAX303EJE?
The VL pin (pin 12) on the MAX303EJE provides a dedicated +5V logic supply reference. It decouples input threshold stability from the main analog supply rails (V+ and V−), ensuring consistent TTL/CMOS-compatible switching behavior across the full ±4.5V to ±20V bipolar or +10V to +30V single-supply ranges. VL must be externally supplied at exactly +5V.
Is the MAX303EJE pin-compatible with other MAX30x variants?
Yes, the MAX303EJE shares identical pinout and footprint with all MAX303 variants in the 16-pin CERDIP (J16-3) package-including MAX303CJE and MAX303MJE. Electrical specifications differ by grade (C/E/M), but mechanical and logical interface compatibility is maintained across temperature grades in the same package.
What does "break-before-make" mean for the MAX303EJE, and how is it specified?
Break-before-make (BBM) ensures that the NC path opens before the NO path closes during SPDT switching, preventing momentary shorting between signal paths. For the MAX303EJE, BBM delay is guaranteed at 10–20ns (typical 15ns) at +25°C, as specified in the Dynamic Characteristics table under "Break-Before-Make Time Delay (tD)".
MAX303EJE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPDT
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CERDIP
MAX303EJE FAQ
1.How can I place an order for MAX303EJE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX303EJE 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 MAX303EJE reliable?
The price and inventory of MAX303EJE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX303EJE is usually 5 days.
3.What payment methods are accepted for MAX303EJE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX303EJE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX303EJE?
MAX303EJE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX303EJE 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 MAX303EJE?
For technical support, including MAX303EJE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX303EJE requirements.
6.How does Aetrix verify that MAX303EJE is sourced from the original manufacturer or authorized distributors?
All MAX303EJE 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 MAX303EJE meets industry standards.
7.What is the process for return or replacement of MAX303EJE?
All MAX303EJE units undergo pre-shipment inspection (PSI). If there is an issue with MAX303EJE, 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 MAX303EJE part is unused and in its original packaging.
Return procedure for MAX303EJE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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