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Analog Devices Inc./Maxim Integrated MAX902ESD+T
- Part No.:
- MAX902ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX902ESD+T.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,439
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Product details
Overview
MAX902ESD+T from Maxim Integrated is a high-speed, low-power dual 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 35mW total (17.5mW per comparator) at +5V supplies, and supports ±5V or single +5V analog operation with input common-mode range extending to the negative rail. It is used in high-speed data sampling circuits requiring precise timing discrimination.
For engineers reviewing the MAX902ESD+T datasheet, MAX902ESD+T pinout, MAX902ESD+T application, or MAX902ESD+T equivalent, key selection criteria include latch-enabled output hold capability, dual-channel independence, TTL-level compatibility with fan-out of four, and operation across -40°C to +85°C industrial temperature range.
Technical Context
The MAX902ESD+T integrates two fully independent high-gain comparators, each with dedicated TTL-compatible latch inputs (LATCH A/B) that freeze output states on logic-low assertion. Its architecture separates analog (VCC/VEE) and digital (VDD) supply domains to minimize noise coupling in mixed-signal systems.
It operates with analog supplies ranging from ±5V to +5V/+10V (VEE grounded), while VDD must be +5V. Input common-mode voltage spans VEE − 0.1V to VCC − 2.25V, enabling ground-sensing in single-supply configurations, and output stages drive standard low-power Schottky TTL loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 8ns typical at 5mV overdrive - enables sub-125MHz sampling decision timing. |
| Power Dissipation | 35mW total at VCC = VDD = +5V, VEE = 0 - supports thermally constrained PCB layouts. |
| Input Offset Voltage | 1–6mV over full temperature range - ensures ≤6mV threshold uncertainty in precision level detection. |
| Output Drive | VOH ≥ 2.4V at 1mA source / VOL ≤ 0.4V at 8mA sink - meets TTL logic thresholds with margin. |
| Supply Flexibility | Separate VCC/VEE (±5V) and VDD (+5V) - allows analog/digital domain isolation for noise-sensitive designs. |
| Latch Input Threshold | VLH = 1.4–2.0V, VLL = 0.8–1.4V - compatible with standard TTL logic drivers without level-shifting. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded control and instrumentation environments. |
Pinout & Package
MAX902ESD+T is housed in a 14-pin narrow SOIC (Small Outline Integrated Circuit) package with gull-wing leads, JEDEC MS-012AC compliant, body width 3.9mm, lead pitch 0.65mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | IN− (A, B) | Negative input terminals for Channel A and Channel B - differential pair inputs referenced to VEE. |
| 2, 9 | IN+ (A, B) | Positive input terminals for Channel A and Channel B - accept signals up to VCC − 2.25V. |
| 3 | GND | Digital ground reference - connects to system DGND; separate from analog substrate (VEE). |
| 4, 11 | LATCH (A, B) | Asynchronous latch enable inputs - logic low freezes respective comparator output state. |
| 5, 12 | OUT (A, B) | TTL-compatible open-collector outputs with internal pull-ups - drive standard LS-TTL loads. |
| 6, 13 | N.C. | No internal connection - must remain unconnected; no routing or termination required. |
| 7 | VEE | Negative analog supply and substrate terminal - sets lower rail for analog input range and bias. |
| 10 | VDD | +5V digital supply - powers TTL output stages and latch logic; not tolerant of voltage variation. |
| 14 | VCC | Positive analog supply - adjustable from +5V to +10V; defines upper analog input limit (VCC − 2.25V). |
Key Features
| Feature | Design Value |
|---|---|
| 8ns propagation delay | Enables real-time decision-making in high-speed A/D converter front-ends and pulse-width modulation timing paths. |
| Independent per-channel latches | Allows asynchronous capture and hold of comparator decisions without global synchronization overhead. |
| Analog input range includes negative rail | Permits direct sensing of signals referenced to ground in single-supply systems (VEE = GND). |
| Separate analog and digital supplies | Reduces digital switching noise coupling into analog signal paths via dedicated VCC/VEE and VDD domains. |
| TTL-compatible outputs with internal pull-ups | Eliminates need for external pull-up resistors and simplifies interface to legacy TTL logic families. |
Applications
| High-Speed Data Sampling | Threshold Detection in Industrial Sensors |
|---|---|
|
Use Scenario: Capturing fast transient events in oscilloscope front-ends or digital storage systems using parallel sample-and-hold architectures. IC Role / Device Role / Timing Role: Dual comparator provides synchronized edge-triggered sampling windows with sub-125MHz timing resolution. Use Value: 8ns propagation delay ensures minimal aperture jitter and accurate time-domain alignment of sampled data points. |
Use Scenario: Monitoring multiple analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules for out-of-range alarm generation. IC Role / Device Role / Timing Role: Independent latch inputs allow selective freezing of alarm states during system diagnostics or maintenance cycles. Use Value: Latch functionality prevents spurious alarms during brief signal disturbances or communication interruptions. |
| Line Receiver for Differential Signaling | PWM Signal Conditioning in Motor Control |
|
Use Scenario: Converting RS-422 or LVDS-like differential signals to single-ended TTL levels in backplane interconnects. IC Role / Device Role / Timing Role: Differential input stage rejects common-mode noise; TTL outputs interface directly to FPGA or microcontroller GPIO. Use Value: Input common-mode range including VEE enables robust reception even with ground potential shifts up to ±1V. |
Use Scenario: Converting analog current-sense feedback into clean digital PWM enable/disable signals for gate drivers in BLDC motor controllers. IC Role / Device Role / Timing Role: Fast response and rail-to-rail input capability allow precise zero-crossing or overcurrent detection within PWM cycle. Use Value: 35mW total power dissipation supports dense integration alongside thermal-sensitive power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9202ESA+ | Pin-for-pin compatible, same 8ns propagation delay, but 17.5mW total (half power vs. MAX902ESD+T). | Designed for new designs where power efficiency and long-term supply continuity are prioritized. | Select MAX9202ESA+ for new projects requiring identical performance with reduced thermal load and active production status. |
| LM393DR | Slower (1.3µs propagation delay), no latch inputs, single-supply only, higher input offset (±2mV typ), no separate VDD. | Suitable for cost-sensitive, non-critical timing applications where speed and latch control are unnecessary. | Choose LM393DR only when design tolerates microsecond-scale delays and does not require output state retention. |
Compared with MAX902ESD+T, MAX9202ESA+ offers identical speed and pinout with halved power consumption and ongoing manufacturing support, whereas LM393DR trades speed, latch capability, and supply flexibility for cost and broad availability in general-purpose applications.
Availability
MAX902ESD+T is available at Aetrix Electronics and suitable for industrial sensor interfaces, high-speed data acquisition systems, and motor control feedback loops requiring stable component supply across extended temperature ranges.
Supply support for MAX902ESD+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX900–MAX903 family was designed for high-speed signal discrimination in data conversion, timing, and monitoring systems where low propagation delay and latch-controlled output stability are critical.
FAQ
What is the operating temperature range for MAX902ESD+T?
The MAX902ESD+T is rated for operation from -40°C to +85°C, making it suitable for industrial environments with wide ambient temperature swings. This rating is confirmed in the Ordering Information table and applies specifically to the E-grade version in narrow SOIC packaging. The device maintains specified propagation delay, input offset, and output drive performance across this full range.
Does MAX902ESD+T support single-supply operation?
Yes, MAX902ESD+T supports single-supply operation with VEE tied to ground, VCC set between +5V and +10V, and VDD at +5V. In this configuration, the input common-mode range extends down to ground, enabling direct sensing of ground-referenced signals. The datasheet explicitly confirms this in Figure 1A and the Applications Information section.
What is the function of the N.C. pins on MAX902ESD+T?
Pins 6 and 13 of MAX902ESD+T are designated N.C. (No Connection) and are not internally bonded or connected to any circuitry. They must remain unconnected on the PCB - no routing, termination, or grounding is required or recommended. This is documented in the Pin Descriptions table for MAX902 on page 7 of the datasheet.
Can MAX902ESD+T drive standard TTL logic loads directly?
Yes, MAX902ESD+T features TTL-compatible outputs with internal pull-ups, capable of sourcing ≥1mA at VOH ≥2.4V and sinking ≥8mA at VOL ≤0.4V. This meets LS-TTL specifications and supports a fan-out of four, allowing direct connection to standard TTL inputs without external components.
Is MAX902ESD+T recommended for new designs?
No - MAX902ESD+T is marked "Not Recommended for New Designs" due to discontinuation of its wafer fabrication process. While still available for legacy support, Maxim recommends the pin-compatible MAX9202ESA+ as a replacement offering identical speed and half the power dissipation with active production status.
MAX902ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 2
- 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):
- 8mA, 6mA, 3mA
- 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
- :
- 14-SOIC
MAX902ESD+T FAQ
1.How can I place an order for MAX902ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX902ESD+T 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 MAX902ESD+T reliable?
The price and inventory of MAX902ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX902ESD+T is usually 5 days.
3.What payment methods are accepted for MAX902ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX902ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX902ESD+T?
MAX902ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX902ESD+T 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 MAX902ESD+T?
For technical support, including MAX902ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX902ESD+T requirements.
6.How does Aetrix verify that MAX902ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX902ESD+T 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 MAX902ESD+T meets industry standards.
7.What is the process for return or replacement of MAX902ESD+T?
All MAX902ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX902ESD+T, 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 MAX902ESD+T part is unused and in its original packaging.
Return procedure for MAX902ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX902ESD+T Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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