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Analog Devices Inc./Maxim Integrated MAX901BESE
- Part No.:
- MAX901BESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX901BESE.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,570
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Product details
Overview
MAX901BESE from Maxim Integrated is a high-speed, low-power dual voltage comparator with differential analog inputs and TTL-compatible outputs, 8ns typical propagation delay at 5mV overdrive, ±5V or +5V single-supply operation, and -40°C to +85°C operating temperature range. It serves in high-speed A/D converter front-ends, line receivers, and PWM timing circuits where fast decision-making with rail-to-rail input capability is required.
For engineers reviewing the MAX901BESE datasheet, MAX901BESE pinout, MAX901BESE application, or MAX901BESE equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative options for legacy design support and obsolescence mitigation.
Technical Context
The MAX901BESE implements two independent high-gain comparators with separate analog (VCC/VEE) and digital (VDD) supply domains, enabling noise isolation in mixed-signal systems. Its input common-mode range extends to the negative rail (VEE), supporting ground-referenced sensing under single-supply conditions (+5V VCC, VEE = GND).
No internal latches are integrated - unlike MAX900/MAX902/MAX903 - eliminating latch-control timing constraints and simplifying interface logic. Output stages drive standard TTL loads (fan-out of four) with VOH ≥ 2.4V and VOL ≤ 0.4V at 8mA sink current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical (5mV overdrive, CL = 15pF) - enables sampling at >100MHz decision rates. |
| Input Offset Voltage | 1–3mV (full temp range) - supports accurate threshold detection down to ~2.5mV resolution. |
| Supply Range | Analog: ±5V or +5V to +10V (VEE = GND); Digital: +5V only - allows flexible mixed-supply partitioning. |
| Input Common-Mode Range | VEE − 0.1V to VCC − 2.25V - includes ground when VEE = GND, enabling single-supply sensor interfacing. |
| Power Dissipation | 70–105mW total (per comparator: ~35–52.5mW at +5V) - balances speed and thermal load in dense layouts. |
| Output Drive | TTL-compatible: VOH ≥ 2.4V (1mA source), VOL ≤ 0.4V (8mA sink) - ensures reliable interfacing with 74LS/ALS logic. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded control applications. |
Pinout & Package
MAX901BESE is supplied in a 16-pin narrow SO (SOIC-16) package with 1.27mm pitch, JEDEC MS-012AC compliant, body size 10.3mm × 7.5mm × 2.35mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | IN− (A, B) | Negative input terminals for comparator channels A and B - differential pair inputs referenced to VEE. |
| 2, 9 | IN+ (A, B) | Positive input terminals for comparator channels A and B - accept signals up to VCC − 2.25V. |
| 3 | GND | Digital ground reference - connects to system DGND; must be decoupled separately from analog ground. |
| 4, 11 | LATCH (A, B) | No connection - MAX901 has no latch function; pins are internally unconnected and must be left floating or tied to GND/VDD per layout best practice. |
| 5, 12 | OUT (A, B) | TTL-output terminals - active-high compatible, capable of sourcing 1mA or sinking 8mA. |
| 6, 13 | N.C. | No internal connection - not bonded; must remain unconnected on PCB. |
| 7 | VEE | Negative analog supply and substrate tie - sets lower rail for analog input range; grounded for single-supply use. |
| 10 | VDD | +5V digital supply - powers output stage and internal logic; requires dedicated 100nF ceramic decoupling. |
| 14 | VCC | Positive analog supply - adjustable from +5V to +10V; defines upper input common-mode limit and analog gain stability. |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables sub-12.5ns decision intervals - critical for >80MSPS flash ADC clocking and high-frequency pulse discrimination. |
| Rail-inclusive input range | Supports direct interfacing with 0V-referenced sensors (e.g., thermocouples, current shunts) without level-shifting circuitry. |
| Separate analog/digital supplies | Allows physical and electrical isolation between noisy digital domains and precision analog signal paths via split ground planes. |
| TTL-compatible outputs | Drives standard LS-TTL loads directly - eliminates need for external buffer stages in legacy digital systems. |
| -40°C to +85°C operation | Validated performance across industrial temperature extremes - suitable for motor drives, PLC I/O modules, and outdoor instrumentation. |
Applications
| High-Speed A/D Converters | Line Receivers |
|---|---|
|
Use Scenario: Front-end comparison stage in flash or pipeline ADC architectures requiring sub-10ns decision latency. IC Role / Device Role / Timing Role: Dual comparator providing parallel threshold evaluation for multi-bit quantization with synchronized output strobing. Use Value: 8ns propagation delay ensures <12.5MHz effective sampling decision rate, minimizing aperture uncertainty in high-speed digitization. |
Use Scenario: Differential signal recovery in RS-422/RS-485 receiver circuits with fast edge detection. IC Role / Device Role / Timing Role: High-speed comparator converting differential bus voltage into clean TTL-level logic states for microcontroller input capture. Use Value: Input common-mode range including VEE allows direct termination to ground in single-supply line receiver designs, reducing component count. |
| PWM Timing Circuits | Threshold Detectors |
|
Use Scenario: Real-time duty-cycle monitoring and dead-time insertion in switched-mode power supply feedback loops. IC Role / Device Role / Timing Role: Dual comparator comparing ramp waveform against upper/lower thresholds to generate complementary PWM edges. Use Value: Matched propagation delays (<2ns skew) between channels ensure precise edge alignment, minimizing shoot-through risk in half-bridge drivers. |
Use Scenario: Overvoltage/undervoltage supervision in FPGA or DSP power rails with fast fault response. IC Role / Device Role / Timing Role: Independent comparator channel detecting supply excursions beyond programmable thresholds set by DAC or resistor dividers. Use Value: 1–3mV input offset enables detection of <5mV deviations - sufficient for ±1% rail tolerance monitoring at 3.3V or 5V supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9202ESA+ | Pin-for-pin compatible, same SO-16 package; 8ns propagation delay; 50% lower power (35mW total); no latch inputs. | Designed for new designs - replaces MAX901 with improved PSRR (150µV/V vs. 100µV/V) and tighter VOS (0.5–2mV). | Select MAX9202ESA+ when upgrading legacy systems or designing new boards where reduced thermal load and enhanced noise immunity are priorities. |
| LM319M/NOPB | SO-14 package (not pin-compatible); 80ns propagation delay; wider supply range (±15V); higher power (120mW); no separate VDD. | Legacy bipolar comparator - suited for general-purpose, non-critical timing where speed is secondary to ruggedness and wide voltage operation. | Choose LM319M/NOPB only for cost-sensitive, low-speed industrial controls where MAX901BESE's speed advantage is unnecessary. |
Compared with MAX901BESE, MAX9202ESA+ offers identical speed and footprint with halved power consumption and improved DC accuracy, while LM319M/NOPB trades speed for broader supply flexibility and higher robustness - making it suitable only for non-critical, lower-frequency supervisory roles.
Availability
MAX901BESE is available at Aetrix Electronics and suitable for industrial control systems, legacy test equipment upgrades, and aerospace maintenance programs requiring stable component supply for long-lifecycle hardware support.
Supply support for MAX901BESE 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 computing markets.
The MAX900–MAX903 family was engineered for high-speed data acquisition systems requiring nanosecond-level decision latency and rail-to-rail input capability in space-constrained industrial environments.
FAQ
Is MAX901BESE still recommended for new designs?
No - MAX901BESE is Not Recommended for New Designs per Maxim's official documentation. The fabrication process is obsolete, and Maxim recommends MAX9202ESA+ as a drop-in replacement with identical pinout, speed, and halved power dissipation. MAX901BESE remains supported for existing production and repair, but new designs should evaluate MAX9202ESA+ or other modern alternatives.
What is the correct power supply configuration for MAX901BESE in single-supply operation?
For single-supply use, connect VCC to +5V to +10V, VEE to GND, and VDD to +5V. The input common-mode range then spans 0V to VCC − 2.25V, enabling ground-referenced signal detection. Decouple VCC and VDD independently with 100nF ceramic capacitors placed within 5mm of their respective pins to maintain high-speed stability.
Does MAX901BESE include latch functionality like other members of the MAX900 family?
No - MAX901BESE has no internal latch circuitry. Pins 4 and 11 (LATCH A/B) are no-connect (N.C.) and must remain unconnected or tied to a fixed potential per layout guidelines. This distinguishes MAX901BESE from MAX900/MAX902/MAX903, which integrate TTL-compatible latch inputs for output hold functionality.
What is the maximum load capacitance supported by MAX901BESE while maintaining 8ns propagation delay?
MAX901BESE maintains its 8ns typical propagation delay up to 15pF load capacitance (CL), as specified in timing tests with 2mA output drive and 5mV input overdrive. Exceeding 15pF increases delay nonlinearly - e.g., at 30pF, tpd+ rises to ~12ns. Keep trace lengths short and avoid stubs to minimize parasitic capacitance in high-speed routing.
Can MAX901BESE operate with ±12V analog supplies?
No - MAX901BESE's absolute maximum analog supply rating is +12V (VCC to VEE), limiting usable split-supply operation to ±5V (10V total). Using ±12V would exceed the +12V differential rating and risk permanent damage. For ±12V applications, consider alternatives like LM319 or TL3016, which support wider supply ranges.
MAX901BESE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 5V ~ 10V, ±2.5V ~ 5V
- :
- 4mV @ ±5V
- Voltage - Input Offset (Max):
- 10µA @ ±5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 15mA,12mA,6mA
- Current - Quiescent (Max):
- 82.5dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX901BESE FAQ
1.How can I place an order for MAX901BESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX901BESE 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 MAX901BESE reliable?
The price and inventory of MAX901BESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX901BESE is usually 5 days.
3.What payment methods are accepted for MAX901BESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX901BESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX901BESE?
MAX901BESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX901BESE 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 MAX901BESE?
For technical support, including MAX901BESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX901BESE requirements.
6.How does Aetrix verify that MAX901BESE is sourced from the original manufacturer or authorized distributors?
All MAX901BESE 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 MAX901BESE meets industry standards.
7.What is the process for return or replacement of MAX901BESE?
All MAX901BESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX901BESE, 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 MAX901BESE part is unused and in its original packaging.
Return procedure for MAX901BESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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