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Analog Devices Inc./Maxim Integrated MAX907CSA+T
- Part No.:
- MAX907CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX907CSA+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,335
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Product details
Overview
MAX907CSA+T from Maxim Integrated is a dual high-speed, ultra-low-power single-supply TTL comparator in an 8-pin SO package, delivering 40ns propagation delay with 5mV overdrive, 700µA supply current per comparator, and input common-mode range from −0.2V to V+ − 1.5V. It serves as a precision threshold detector in battery-powered instrumentation and high-speed sampling circuits.
For engineers reviewing the MAX907CSA+T datasheet, MAX907CSA+T pinout, MAX907CSA+T application, or MAX907CSA+T equivalent, key selection criteria include TTL-compatible outputs without pullups, built-in hysteresis for noise immunity, single +5V operation (4.5V–5.5V), −0.2V input capability below ground, and dual-channel independence in compact SO-8 packaging.
Technical Context
The MAX907CSA+T implements bipolar comparator cores with fixed internal hysteresis (≈4mV input-referred), eliminating external feedback resistors. Its input stage operates rail-to-rail within the specified common-mode range, and output drivers are designed for direct TTL logic interfacing with no external components.
Propagation delay is guaranteed at 40ns (typ) under 5mV overdrive at V+ = 5V, TA = +25°C, with differential skew ≤2ns between channels. The device lacks latch or complementary outputs-features exclusive to the MAX909 variant-confirming its role as a pure dual comparator without storage or dual-output functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 40ns typical (5mV overdrive); enables ≥20MHz sampling in timing-critical discriminators. |
| Supply current per comparator | 700µA at V+ = 5V; supports multi-channel battery operation with sub-1.5mA total draw. |
| Input common-mode range | −0.2V to V+ − 1.5V; accepts signals slightly below ground and up to 3.5V on +5V supply. |
| Input offset voltage | 1mV typical (3.5mV max); ensures accurate threshold detection within ±2mV window. |
| Output type | TTL-compatible open-collector equivalent; sinks 3.2mA at VOL ≤ 0.55V, requires no pullup resistor. |
| Hysteresis | Internal, fixed ≈4mV (VTRIP+ − VTRIP−); prevents chatter on slow or noisy inputs without external components. |
| Supply voltage range | +4.5V to +5.5V only; not rated for ±5V or extended analog rails-unlike MAX909. |
Pinout & Package
MAX907CSA+T is housed in an 8-pin SO (Small Outline) package, surface-mount, with standard 1.27mm pitch and JEDEC MS-012AC outline. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive supply input | Accepts +4.5V to +5.5V; must be decoupled locally with 0.1µF ceramic capacitor. |
| 2 (INA−) | Inverting input of Comparator A | Differential pair input; referenced to INA+; supports −0.2V to V+−1.5V common-mode. |
| 3 (INA+) | Noninverting input of Comparator A | Differential pair input; referenced to INA−; same voltage range as INA−. |
| 4 (GND) | Circuit ground reference | Analog and digital return; requires low-inductance ground plane for high-speed stability. |
| 5 (INB+) | Noninverting input of Comparator B | Independent second channel input; electrically isolated from Channel A. |
| 6 (INB−) | Inverting input of Comparator B | Second channel differential input; identical specs and layout rules as INA±. |
| 7 (OUTB) | Output of Comparator B | TTL-compatible active-low output; sinks ≥3.2mA at VOL ≤ 0.55V (TA = −40°C). |
| 8 (OUTA) | Output of Comparator A | Independent TTL-compatible output; no internal pullup required; shares same drive strength as OUTB. |
Key Features
| Feature | Design Value |
|---|---|
| 40ns propagation delay | Enables clean edge detection in >20MHz clock/data recovery paths without added latency compensation. |
| 700µA per comparator supply current | Allows dual-channel operation at <1.5mA total, extending battery life in portable threshold monitors. |
| Internal 4mV hysteresis | Eliminates need for external hysteresis resistors and associated board space, BOM count, and tuning effort. |
| TTL-compatible outputs | Direct interface to 74LS/74HC logic families without pullup resistors or level shifters. |
| Input range includes −0.2V | Supports detection of signals near or slightly below ground-critical in single-supply sensor front-ends. |
Applications
| Battery-Powered Threshold Detector | High-Speed A/D Converter Front-End |
|---|---|
Use Scenario: Monitoring battery voltage against low-charge cutoff (e.g., 3.3V) in handheld medical devices. IC Role / Device Role / Timing Role: Dual comparator independently checks upper and lower thresholds using resistor-divider references. Use Value: Ultra-low 1.4mA total quiescent current extends runtime; built-in hysteresis prevents false triggers during voltage sag. | Use Scenario: Converting analog sensor output (e.g., thermocouple amplifier) into 1-bit stream for sigma-delta ADC input. IC Role / Device Role / Timing Role: High-speed comparator acting as flash ADC cell or clocked sample comparator in pipeline stages. Use Value: 40ns delay ensures synchronization with ≥20MHz sampling clocks; TTL outputs drive FPGA I/O directly. |
| Line Receiver for Industrial Bus | Zero-Crossing Detector in Power Control |
Use Scenario: Receiving RS-422/RS-485 differential signals converted to single-ended via external resistor network. IC Role / Device Role / Timing Role: Single-supply line receiver interpreting logic levels from terminated transmission lines. Use Value: −0.2V input tolerance accommodates residual negative swing on unterminated stubs; 40ns response captures fast bus edges. | Use Scenario: Detecting AC mains zero-crossing for phase-angle dimming or solid-state relay timing. IC Role / Device Role / Timing Role: Precision zero-cross comparator with hysteresis to reject noise-induced false crossings. Use Value: Fixed 4mV hysteresis rejects 50/60Hz harmonics and EMI; dual outputs allow leading/lagging edge detection. |
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 |
|---|---|---|---|
| LM393DR | Slower (1.3µs typ), higher supply current (1mA/ch), no built-in hysteresis, wider supply range (2–36V). | Suitable for general-purpose DC thresholding where speed <100kHz suffices and hysteresis can be added externally. | Select LM393DR only when cost is primary and 40ns timing or micropower operation is unnecessary. |
| TLV3501CDR | Faster (4.5ns), rail-to-rail input, CMOS output (not TTL), higher supply current (8.5mA), requires pullup for logic-high. | Better for high-frequency (>100MHz) comparators driving CMOS loads, but incompatible with legacy TTL interfaces. | Choose TLV3501CDR only if nanosecond speed is mandatory and system uses CMOS-level signaling. |
Compared with LM393DR and TLV3501CDR, the MAX907CSA+T uniquely balances TTL compatibility, 40ns speed, and 700µA/channel power in a single +5V system-making it irreplaceable where all three traits are simultaneously required.
Availability
MAX907CSA+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, high-speed data acquisition systems, and industrial line receivers requiring stable component supply across production lifecycles.
Supply support for MAX907CSA+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 consumer applications.
The MAX907CSA+T belongs to Maxim's ultra-low-power high-speed comparator family, engineered specifically for single-supply +5V systems demanding TTL compatibility, sub-1µA/MHz efficiency, and robust noise immunity without external components.
FAQ
What is the operating temperature range for MAX907CSA+T?
The MAX907CSA+T is specified for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table, where "MAX907CSA" maps to the "C" grade (0°C to +70°C) in 8-pin SO packaging. It is not rated for extended industrial (−40°C to +85°C) or military (−55°C to +125°C) ranges-those require MAX907ESA or MAX907MSA variants respectively.
Does MAX907CSA+T support dual ±5V supplies?
No, MAX907CSA+T supports only single +4.5V to +5.5V supply operation. Dual ±5V capability is exclusive to the MAX909 variant, as explicitly stated in the General Description and Absolute Maximum Ratings sections. Attempting to apply negative voltage to V− or GND pins of MAX907CSA+T violates its absolute maximum rating and may cause permanent damage.
Is MAX907CSA+T pin-compatible with MAX908 or MAX909?
No, MAX907CSA+T is not pin-compatible with MAX908 (14-pin) or MAX909 (8-pin but different pinout). The MAX907 uses an 8-pin SO with V+, INA−, INA+, GND, INB+, INB−, OUTB, OUTA. The MAX909 places QOUT, QOUT, GND, LE, V−, IN−, IN+, V+ on the same 8-pin footprint-making direct substitution impossible without PCB redesign.
Can MAX907CSA+T outputs drive standard TTL logic inputs directly?
Yes, MAX907CSA+T outputs are fully TTL-compatible: they sink ≥3.2mA while holding VOL ≤ 0.55V (at TA = −40°C), meeting TTL low-level requirements, and provide VOH ≥ 2.8V when sourcing 100µA-satisfying TTL high-level thresholds. No external pullup resistors are needed, unlike open-drain comparators.
What is the input hysteresis value of MAX907CSA+T and how is it implemented?
The MAX907CSA+T features fixed internal hysteresis of approximately 4mV (VTRIP+ − VTRIP−), derived from the typical trip point spread of +2mV/−2mV around VOS. This hysteresis is implemented via on-chip positive feedback circuitry-not external resistors-ensuring consistent noise immunity across temperature and unit-to-unit without design iteration.
MAX907CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 11V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.3µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- 86.02dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- 50ns
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX907CSA+T FAQ
1.How can I place an order for MAX907CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX907CSA+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 MAX907CSA+T reliable?
The price and inventory of MAX907CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX907CSA+T is usually 5 days.
3.What payment methods are accepted for MAX907CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX907CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX907CSA+T?
MAX907CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX907CSA+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 MAX907CSA+T?
For technical support, including MAX907CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX907CSA+T requirements.
6.How does Aetrix verify that MAX907CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX907CSA+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 MAX907CSA+T meets industry standards.
7.What is the process for return or replacement of MAX907CSA+T?
All MAX907CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX907CSA+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 MAX907CSA+T part is unused and in its original packaging.
Return procedure for MAX907CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX907CSA+T Tags
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LM239DR
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LM2903P
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