My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX381CPE
- Part No.:
- MAX381CPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX381CPE.pdf
- Description:
- IC SWITCH SPST-NOX2 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX381CPE from Maxim Integrated is a precision single-pole single-throw (SPST) analog switch with normally open configuration, designed for low-voltage signal routing in precision instrumentation and battery-powered systems. It delivers 20Ω typical on-resistance (≤35Ω max), <2Ω matched on-resistance between channels, <5pC charge injection, and <2.5nA off-leakage at +85°C while operating from ±3V to ±8V or +3V to +15V supplies.
For engineers reviewing the MAX381CPE datasheet, MAX381CPE pinout, MAX381CPE application, or MAX381CPE equivalent, key selection criteria include rail-to-rail analog signal handling (V− to V+), guaranteed on-resistance flatness (<4Ω over full signal range), CMOS/TTL logic compatibility across 3V/5V/±3V/±5V supplies, and low power consumption (<10µW).
Technical Context
The MAX381CPE uses Maxim's low-voltage silicon-gate process to achieve high accuracy and low distortion in analog switching paths. Its architecture ensures minimal channel-to-channel mismatch and stable on-resistance across temperature and analog signal voltage (−5V to +5V with ±5V supplies).
It features break-before-make timing (10–20ns delay for MAX383 only - not applicable to MAX381), fast switching (tON < 175ns, tOFF < 100ns), and internal protection diodes enabling robust operation under transient overvoltage conditions when properly sequenced.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 20Ω typical, ≤35Ω maximum - ensures minimal signal attenuation and gain error in precision signal paths |
| On-Resistance Match | <2Ω between channels - enables accurate differential or ratiometric measurements without calibration |
| Charge Injection | <5pC - reduces sampling glitches in sample-and-hold and ADC front-end circuits |
| Off-Leakage Current | <2.5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces |
| Analog Signal Range | V− to V+ - supports rail-to-rail input/output swing with bipolar or single-supply operation |
| Logic Compatibility | TTL/CMOS with 3V, 5V, ±3V, ±5V supplies - simplifies interface to mixed-voltage digital controllers |
| Supply Range | +3V to +15V single supply or ±3V to ±8V dual supply - accommodates wide system voltage architectures |
Pinout & Package
MAX381CPE is housed in a 16-pin plastic DIP package (0.300" wide), rated for 0°C to +70°C operation. Pin 13 is GND; pins 11 and 14 are V+ and V− respectively; pins 1/3/6/8 are COM terminals; pins 9/16 are NO terminals; pins 10/15 are logic inputs (IN1/IN2); pins 2/7/12 are not internally connected (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8 (COM) | Analog Switch Common Terminal | Input/output node shared across switch path; connects to load or source depending on state |
| 9, 16 (NO) | Analog Switch Normally Open Terminal | Open-circuit by default; connects to COM only when corresponding IN pin is asserted |
| 10, 15 (IN) | Logic Level Input (Active High) | CMOS/TTL-compatible control input; drives switch ON when ≥2.4V (V+ = 5V) |
| 11 (V+) | Positive Supply Input | Provides analog signal headroom and logic reference; must be powered before V− and inputs |
| 14 (V−) | Negative Supply Input | Establishes lower analog rail; required for bipolar operation or enhanced dynamic range |
| 13 (GND) | Logic Negative Supply Input | Reference for logic inputs and internal biasing; tied to system ground in single-supply configurations |
| 2, 7, 12 (N.C.) | Not Internally Connected | No internal connection; must remain unconnected or grounded per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V− to V+ signal swing without clipping - critical for high-fidelity audio and sensor conditioning |
| Guaranteed on-resistance flatness | <4Ω variation over entire analog range - maintains consistent gain and linearity across signal amplitude |
| Low charge injection | <5pC - minimizes voltage step errors during switching in precision sampling circuits |
| Pin-compatible with DG401/DG403/DG405 | Enables drop-in replacement in legacy designs without PCB revision |
| Single- or dual-supply operation | Operates from +3V to +15V or ±3V to ±8V - simplifies integration into mixed-power-domain systems |
Applications
| Sample-and-Hold Circuits | Military Radios |
|---|---|
Use Scenario: Capturing precise RF or IF signal samples prior to digitization in wideband receivers. IC Role / Device Role / Timing Role: SPST switch isolating hold capacitor from input during acquisition phase; controlled by timing generator. Use Value: Low charge injection (<5pC) prevents hold-step error; rail-to-rail range preserves full dynamic range of sampled signals. |
Use Scenario: Signal routing between antenna front-end, filtering stages, and transceiver modules in ruggedized HF/VHF radios. IC Role / Device Role / Timing Role: Analog multiplexer enabling rapid band-switching and path reconfiguration under microcontroller control. Use Value: Guaranteed on-resistance match (<2Ω) ensures balanced insertion loss across switched paths; −55°C to +125°C variants available for extended environmental operation. |
| Test Equipment | Battery-Operated Systems |
Use Scenario: Automated signal path selection in multichannel data acquisition units and benchtop analyzers. IC Role / Device Role / Timing Role: Precision analog switch matrix routing calibrated reference voltages or sensor inputs to measurement engines. Use Value: Low leakage (<2.5nA at +85°C) prevents drift in high-impedance reference networks; flat on-resistance ensures measurement repeatability. |
Use Scenario: Power management and signal routing in portable medical monitors, handheld meters, and IoT edge sensors. IC Role / Device Role / Timing Role: Low-quiescent switch enabling selective activation of sensor chains or display drivers to extend battery life. Use Value: Sub-10µW power consumption minimizes standby drain; single +3V operation supports direct Li-ion/LiPo interfacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX381EPE | Same functionality and pinout; rated for −40°C to +85°C industrial temperature range | Suitable for extended-temperature environments where MAX381CPE's 0°C to +70°C range is insufficient | Select MAX381EPE for industrial-grade reliability without design change |
| ADG401BNZ | Higher typical on-resistance (35Ω), no guaranteed on-resistance match spec, but offers 16-lead PDIP and −40°C to +85°C rating | Lacks matched on-resistance guarantee and flatness spec - less suitable for precision ratiometric or differential applications | Choose ADG401BNZ only when cost or second-source availability outweighs precision matching requirements |
Compared with MAX381CPE, MAX381EPE extends thermal capability without altering performance or layout, while ADG401BNZ trades precision specs for broader vendor support and industrial qualification - making MAX381CPE optimal for cost-sensitive commercial designs requiring guaranteed matching and flatness.
Availability
MAX381CPE is available at Aetrix Electronics and suitable for battery-operated systems, test equipment, and military radio subsystems requiring stable component supply and long-term obsolescence management.
Supply support for MAX381CPE 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 fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and computing applications.
The MAX381 series belongs to Maxim's precision analog switch product line, engineered for low-distortion, low-leakage signal routing in measurement, instrumentation, and portable electronics where accuracy and power efficiency are critical.
FAQ
What is the maximum analog signal voltage range supported by the MAX381CPE?
The MAX381CPE supports analog signals from V− to V+ - up to ±8V with dual supplies or 0V to +15V with single supply. Absolute maximum ratings specify V+ to V− ≤ 17V, and any pin voltage must stay within (V− − 2V) to (V+ + 2V). This rail-to-rail capability allows full utilization of the supply rails in precision signal paths without clipping.
Does the MAX381CPE require external protection diodes for overvoltage tolerance?
No - the MAX381CPE includes internal protection diodes on all analog pins (COM, NO, NC, IN), clamping signals exceeding V+ or V−. However, forward current through these diodes must be limited to ≤30mA continuous or 100mA peak (1ms, 10% duty cycle). External series diodes are recommended only if strict power sequencing cannot be guaranteed.
Can the MAX381CPE operate from a single +3.3V supply?
Yes - the MAX381CPE operates from +3V to +15V single supply. At +3.3V, on-resistance rises to 75Ω typical (185Ω max), turn-on time extends to 400ns, and leakage remains below 0.2nA at +25°C. Logic inputs remain compatible with 3.3V CMOS levels, making it viable for low-voltage portable designs despite higher RON.
Is the MAX381CPE pin-compatible with the DG401 analog switch?
Yes - the MAX381CPE is explicitly specified as pin-compatible with the DG401, DG403, and DG405 families. Pin assignments for COM, NO, IN, V+, V−, and GND match exactly, enabling direct substitution in existing layouts without modification - provided supply and signal voltage ranges align with MAX381CPE specifications.
What is the guaranteed on-resistance flatness specification for the MAX381CPE?
The MAX381CPE guarantees on-resistance flatness of ≤4Ω maximum over its specified analog signal range (V− to V+). This means the difference between the highest and lowest measured on-resistance values - as VCOM sweeps across the full rail-to-rail range - will not exceed 4Ω, ensuring consistent gain and minimal THD in audio and instrumentation applications.
MAX381CPE 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:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- ±3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 175ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 200pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX381CPE FAQ
1.How can I place an order for MAX381CPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX381CPE 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 MAX381CPE reliable?
The price and inventory of MAX381CPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX381CPE is usually 5 days.
3.What payment methods are accepted for MAX381CPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX381CPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX381CPE?
MAX381CPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX381CPE 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 MAX381CPE?
For technical support, including MAX381CPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX381CPE requirements.
6.How does Aetrix verify that MAX381CPE is sourced from the original manufacturer or authorized distributors?
All MAX381CPE 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 MAX381CPE meets industry standards.
7.What is the process for return or replacement of MAX381CPE?
All MAX381CPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX381CPE, 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 MAX381CPE part is unused and in its original packaging.
Return procedure for MAX381CPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX381CPE 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…
