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Analog Devices Inc./Maxim Integrated MAX900BEPP
- Part No.:
- MAX900BEPP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX900BEPP.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,014
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Product details
Overview
MAX900BEPP from Maxim Integrated is a quad high-speed voltage comparator with differential analog inputs and TTL-compatible outputs featuring independent latch inputs per channel. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V supply, and supports ±5V or +5V-to-+10V analog supplies with input common-mode range extending to the negative rail. It is used in high-speed A/D converter front-ends and line receiver circuits requiring precise timing discrimination.
For engineers reviewing the MAX900BEPP datasheet, MAX900BEPP pinout, MAX900BEPP application, or MAX900BEPP equivalent, this page provides verified technical context, exact pin functions, real-world use scenarios, and validated alternative options for legacy design support and obsolescence mitigation.
Technical Context
The MAX900BEPP implements four independent high-gain comparators with TTL-output stages optimized for fan-out of four low-power Schottky TTL loads. Each channel includes a dedicated TTL-compatible latch input that holds output state when driven low - a feature absent in MAX901 but present in MAX900/MAX902/MAX903.
It supports flexible power architecture: separate analog (VCC/VEE) and digital (VDD) supplies, or single +5V operation with VEE grounded. Analog input common-mode range spans VEE − 0.1V to VCC − 2.25V, enabling ground-sensing capability in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sampling of >100MHz signals in A/D converter trigger paths. |
| Power Dissipation | 18mW per comparator at +5V - balances speed and thermal load in dense mixed-signal PCB layouts. |
| Analog Supply Range | +5V to +10V (VEE = GND) or ±5V - supports both single-rail and split-rail signal conditioning topologies. |
| Input Common-Mode Range | Extends to VEE − 0.1V - allows direct sensing of signals referenced to ground or negative rails. |
| Output Type | TTL-compatible with active internal pull-ups - interfaces directly with standard 74LS/74F logic without external resistors. |
| Latch Inputs | Four independent TTL-compatible latch inputs (pins 4,7,14,17) - enables synchronous capture of comparator states across all channels. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended-temperature embedded control applications. |
Pinout & Package
MAX900BEPP is supplied in a 20-pin plastic DIP package (0.300" wide), with lead finish Pb-free and RoHS-compliant per Maxim's packaging standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN− (A, B, C, D) | Negative input terminals for comparators A–D; differential pair with corresponding IN+ pins. |
| 2, 9, 12, 19 | IN+ (A, B, C, D) | Positive input terminals for comparators A–D; accepts signals up to VCC + 0.2V without damage. |
| 3 | GND | Common reference for digital logic and latch circuitry; must be tied to system ground plane. |
| 4, 7, 14, 17 | LATCH (A, B, C, D) | TTL-level latch enable inputs; drives outputs into hold mode when pulled low (MAX900-specific feature). |
| 5, 6, 15, 16 | OUT (A, B, C, D) | TTL-compatible open-collector outputs with internal pull-ups; sink up to 8mA, source ~1mA. |
| 8 | VEE | Negative analog supply and substrate connection; must be decoupled locally with 100nF ceramic capacitor. |
| 13 | VDD | +5V digital supply only; powers latch logic and output drivers - not adjustable. |
| 18 | VCC | Positive analog supply (±5V or +5V to +10V); powers comparator core and sets input voltage range upper limit. |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables accurate timing capture in high-speed data acquisition systems where sub-10ns jitter matters. |
| Independent per-channel latches | Allows asynchronous or synchronized sampling of four analog thresholds without inter-channel interference. |
| Input range includes negative rail | Eliminates need for level-shifting circuitry when monitoring bipolar or ground-referenced sensor signals. |
| Separate analog/digital supplies | Reduces noise coupling between sensitive analog inputs and noisy digital switching domains. |
| TTL-compatible outputs with internal pull-ups | Simplifies board layout by removing four external pull-up resistors per device in logic interface applications. |
Applications
| High-Speed A/D Converter Front-End | Line Receiver with Threshold Detection |
|---|---|
|
Use Scenario: Fast edge detection in flash or pipeline ADC sampling clocks, where comparator output triggers sample-and-hold timing. IC Role / Device Role / Timing Role: Quad comparator acts as precision zero-crossing detector and clock-edge synchronizer for multi-channel digitization. Use Value: 8ns propagation delay ensures <100ps timing skew across four parallel channels, preserving phase coherence in time-interleaved ADCs. |
Use Scenario: Digital signal recovery from degraded analog transmission lines (e.g., RS-422, LVDS stubs) with adaptive threshold setting. IC Role / Device Role / Timing Role: Voltage discriminator converts analog line voltage into clean TTL logic levels while rejecting common-mode noise. Use Value: Input common-mode range down to VEE − 0.1V allows direct interfacing to −5V-referenced receivers without bias networks. |
| PWM Signal Monitoring System | Programmable Alarm Threshold Bank |
|
Use Scenario: Real-time validation of PWM duty cycle and frequency in motor control feedback loops using dual-comparator window detection. IC Role / Device Role / Timing Role: Two channels monitor rising/falling edges of PWM waveform; remaining two track reference thresholds. Use Value: Independent latches allow freezing comparator states during microcontroller read cycles, eliminating metastability in interrupt-driven firmware. |
Use Scenario: Eight-channel analog alarm system using two MAX900BEPP devices paired with an octal DAC (e.g., MX7228) for programmable upper/lower limits. IC Role / Device Role / Timing Role: Comparator bank compares transducer outputs against software-defined thresholds updated via SPI/I²C DAC. Use Value: Four latch inputs per device enable atomic capture of eight simultaneous alarm conditions before host processor polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9203BEWP | Pin-for-pin compatible, same 20-pin SO package, 8ns propagation delay, but 9mW/comparator (half power). | Same functional block diagram and latch behavior; requires no PCB change if migrating from MAX900BEPP to SO package. | Select when upgrading legacy designs to reduce thermal load and improve power efficiency without altering logic interface. |
| LM339MTX/NOPB | Quad comparator with open-collector outputs, but 1.3µs typical propagation delay and no latch inputs or TTL pull-ups. | Supports basic threshold detection only; unsuitable for >1MHz timing-critical applications or synchronous sampling. | Select only for cost-sensitive, non-timing-critical industrial monitoring where speed and latch features are unnecessary. |
Compared with MAX900BEPP, MAX9203BEWP offers identical functionality at half the power and same speed, making it the preferred drop-in upgrade; LM339MTX/NOPB lacks latches, speed, and TTL drive - it serves only as a functional fallback for low-frequency alarm tasks.
Availability
MAX900BEPP is available at Aetrix Electronics and suitable for industrial control systems, legacy test equipment refurbishment, and aerospace maintenance programs requiring stable component supply amid obsolescence challenges.
Supply support for MAX900BEPP 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 family was designed for high-speed data acquisition and real-time signal discrimination in mixed-signal systems where nanosecond-level timing accuracy and latch-controlled sampling are required.
FAQ
Is MAX900BEPP still in production?
No - MAX900BEPP is Not Recommended for New Designs due to discontinuation of its wafer fabrication process. However, Aetrix Electronics maintains limited legacy stock and supports traceable sourcing for ongoing production and repair programs. The datasheet remains publicly available for design validation and failure analysis of existing deployments.
What is the maximum operating supply voltage for MAX900BEPP?
The absolute maximum analog supply voltage (VCC to VEE) for MAX900BEPP is +12V. At recommended operating conditions, VCC may range from +5V to +10V with VEE grounded, or ±5V in split-supply mode. Exceeding +12V differential risks permanent damage to the internal comparator core.
Does MAX900BEPP require external pull-up resistors on its outputs?
No - MAX900BEPP integrates active internal pull-ups on all four TTL-compatible outputs (pins 5,6,15,16), eliminating the need for external resistors. This simplifies layout and ensures consistent rise time across channels when driving standard LS-TTL loads.
Can MAX900BEPP operate from a single +5V supply?
Yes - MAX900BEPP supports single +5V operation by tying VEE to ground, with VCC = +5V and VDD = +5V. In this configuration, the input common-mode range extends from 0V to +2.75V, enabling ground-referenced signal detection without level shifting.
What is the function of pins 4, 7, 14, and 17 on MAX900BEPP?
Pins 4, 7, 14, and 17 are independent TTL-compatible latch inputs for comparators A, B, C, and D respectively. When pulled low, each latch freezes the corresponding comparator's output state; when high, the comparator operates transparently. This feature is unique to MAX900/MAX902/MAX903 and absent in MAX901.
MAX900BEPP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Push-Pull, 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):
- 6mA, 12mA, 15mA
- Current - Quiescent (Max):
- -82dB, -80dB
- CMRR, PSRR (Typ):
- 8ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 20-PDIP
MAX900BEPP FAQ
1.How can I place an order for MAX900BEPP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX900BEPP 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 MAX900BEPP reliable?
The price and inventory of MAX900BEPP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX900BEPP is usually 5 days.
3.What payment methods are accepted for MAX900BEPP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX900BEPP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX900BEPP?
MAX900BEPP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX900BEPP 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 MAX900BEPP?
For technical support, including MAX900BEPP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX900BEPP requirements.
6.How does Aetrix verify that MAX900BEPP is sourced from the original manufacturer or authorized distributors?
All MAX900BEPP 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 MAX900BEPP meets industry standards.
7.What is the process for return or replacement of MAX900BEPP?
All MAX900BEPP units undergo pre-shipment inspection (PSI). If there is an issue with MAX900BEPP, 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 MAX900BEPP part is unused and in its original packaging.
Return procedure for MAX900BEPP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX900BEPP Tags
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