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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:1,193
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Product details
Overview
MAX907CSA-T from Maxim Integrated is a dual high-speed ultra-low-power single-supply TTL comparator IC, operating from +4.5V to +5.5V, delivering 40ns propagation delay with 5mV input overdrive and 700µA per comparator supply current. It features internal hysteresis, rail-to-rail input range (–0.2V to V+–1.5V), and TTL-compatible outputs without external pull-ups-used in battery-powered threshold detection 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 propagation delay vs. overdrive, input common-mode range at low supply, hysteresis width (±2mV trip points), and SO-8 package compatibility with legacy 5V logic systems.
Technical Context
The MAX907CSA-T implements a bipolar comparator core with fixed internal hysteresis, eliminating need for external feedback resistors. Its input stage accepts voltages down to –0.2V (200mV below GND) and up to V+–1.5V, enabling direct interfacing with sensors and attenuated signals in single-supply systems.
All inputs and outputs are short-circuit protected to either supply rail continuously. Output stages drive TTL logic levels (VOH ≥ 2.8V at 100µA, VOL ≤ 0.55V at 3.2mA) without pull-up resistors, and propagation delay skew between channels is ≤2ns across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns typical (5mV overdrive); enables sub-25MHz sampling decision timing in A/D front-ends. |
| Supply Current per Comparator | 700µA at 5V (3.5mW); supports >100-hour operation on coin-cell batteries in portable detectors. |
| Input Common-Mode Range | –0.2V to V+–1.5V; allows direct connection to ground-referenced transducers without level-shifting. |
| Input Offset Voltage | 1mV typical (3.5mV max); ensures <5mV total uncertainty in precision zero-crossing and threshold applications. |
| Hysteresis Width (VTRIP+ − VTRIP−) | 4mV typical (at VCM = 0V); suppresses noise-induced chatter on slow-moving analog inputs like thermistor outputs. |
| Output Drive Capability | TTL-compatible: VOH ≥ 2.8V (100µA sink), VOL ≤ 0.55V (3.2mA source); interfaces directly to 74LS/74HC logic without buffers. |
| Operating Supply Range | +4.5V to +5.5V; maintains full performance across ±5% variation in regulated 5V rails common in industrial controllers. |
Pinout & Package
MAX907CSA-T is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012AC compliant, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply input | Accepts +4.5V to +5.5V; requires local 0.1µF ceramic decoupling placed within 2mm. |
| 2 - INA− | Inverting input of comparator A | Differential pair input node; biased internally; supports –0.2V to V+–1.5V common-mode range. |
| 3 - INA+ | Noninverting input of comparator A | Differential pair input node; identical voltage range and biasing as INA−. |
| 4 - GND | Circuit ground reference | Return path for supply and signal currents; must connect to low-inductance ground plane. |
| 5 - INB+ | Noninverting input of comparator B | Independent second comparator input; electrically isolated from INA pins except shared supply/GND. |
| 6 - INB− | Inverting input of comparator B | Second differential pair input; same electrical specs as INA−/INA+. |
| 7 - OUTB | Output of comparator B | TTL-compatible open-collector-equivalent output; sinks 3.2mA minimum at VOL ≤ 0.55V. |
| 8 - OUTA | Output of comparator A | Identical drive strength and logic thresholds as OUTB; no internal pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Internal hysteresis | Fixed ~4mV input-referred hysteresis eliminates external resistor networks and layout sensitivity in noisy environments. |
| Rail-inclusive input range | Operates with inputs down to –0.2V (below GND), enabling direct interface with AC-coupled or negative-biased sensor outputs. |
| TTL-compatible outputs | Guaranteed VOH ≥ 2.8V and VOL ≤ 0.55V drive standard TTL loads without external pull-ups or level shifters. |
| Short-circuit robustness | Inputs and outputs withstand continuous short to V+ or GND-critical for test fixtures and fault-tolerant industrial I/O. |
| Low propagation delay skew | ≤2ns channel-to-channel skew ensures synchronized decisions in dual-comparator timing circuits like window detectors. |
Applications
| Battery-Powered Threshold Detector | High-Speed Sampling Circuit |
|---|---|
Use Scenario: Detecting low-voltage battery depletion (<3.2V) in portable medical monitors using a resistive divider. IC Role / Device Role / Timing Role: Dual comparator configured as window detector: one channel monitors upper limit, the other lower limit with shared hysteresis. Use Value: 700µA total quiescent current extends runtime; rail-inclusive inputs eliminate level-shifting components; 40ns response enables real-time alerting before shutdown. |
Use Scenario: Clocking a 12-bit SAR ADC's sample-and-hold control based on analog input crossing programmable thresholds. IC Role / Device Role / Timing Role: High-speed comparator generating precise edge-triggered strobes synchronized to analog signal transitions. Use Value: 40ns delay ensures sub-25MHz sampling rates; low skew between dual outputs supports interleaved or redundant sampling architectures. |
| Line Receiver for Industrial Bus | Zero-Crossing Detector for AC Mains |
Use Scenario: Converting RS-422 differential signals to single-ended TTL logic in factory automation PLC modules. IC Role / Device Role / Timing Role: Single comparator used per line, with IN+ and IN− driven by receiver outputs; hysteresis rejects EMI-induced glitches. Use Value: Input range includes ground allows direct connection to bus receivers; TTL outputs interface natively to FPGA GPIO banks without translation. |
Use Scenario: Detecting AC mains zero crossings for phase-controlled dimmers and motor speed controllers. IC Role / Device Role / Timing Role: Comparator compares rectified AC waveform against 0V reference; internal hysteresis prevents multiple triggers near zero. Use Value: –0.2V input capability accommodates small negative excursions in transformer-coupled inputs; 4mV hysteresis eliminates noise-induced false triggers at 50/60Hz. |
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 propagation delay), higher supply current (1mA/comparator), no internal hysteresis, wider supply range (2–36V). | Suitable for general-purpose DC thresholding but not high-speed sampling or low-power battery use. | Select LM393DR only when cost is primary and speed/power are non-critical; requires external hysteresis resistors. |
| TLV3501CDR | Faster (4.5ns), rail-to-rail inputs, CMOS output (not TTL), higher supply current (5.3mA), requires external pull-up for TTL compatibility. | Better for high-frequency (>100MHz) comparators but incompatible with legacy TTL loads without level-shifting. | Choose TLV3501CDR only when nanosecond timing is mandatory and system uses CMOS logic or can add pull-up resistors. |
Compared with LM393DR and TLV3501CDR, the MAX907CSA-T uniquely balances 40ns speed, 700µA ultra-low power, built-in hysteresis, and native TTL drive-making it optimal for 5V battery-operated or industrial control systems where all three attributes are simultaneously required.
Availability
MAX907CSA-T is available at Aetrix Electronics and suitable for battery-powered systems, high-speed A/D converter front-ends, and industrial line receiver designs requiring stable component supply and long-term obsolescence management.
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 precision analog, mixed-signal, and high-speed interface ICs for industrial, communications, and consumer applications.
The MAX907CSA-T belongs to Maxim's legacy high-speed comparator family designed specifically for single-supply 5V systems demanding low power, fast response, and robust noise immunity in portable and embedded instrumentation.
FAQ
What is the maximum operating temperature range for the MAX907CSA-T?
The MAX907CSA-T is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is confirmed in the Ordering Information table for the "CSA" suffix, and aligns with its SO-8 plastic package construction and bipolar process characteristics. The MAX907CSA-T does not support extended or military temperature grades.
Does the MAX907CSA-T require external hysteresis resistors?
No, the MAX907CSA-T incorporates fixed internal hysteresis (~4mV input-referred width), eliminating the need for external feedback resistors. This is explicitly stated in the General Description and Detailed Description sections, and verified by the presence of defined VTRIP+ and VTRIP− parameters in the Electrical Characteristics tables.
Can the MAX907CSA-T operate from a 3.3V supply?
No, the MAX907CSA-T is specified only for +4.5V to +5.5V single-supply operation. The Absolute Maximum Ratings and Electrical Characteristics tables define V+ = 5V (with tolerance ±0.5V) as the operational range; performance is not characterized or guaranteed below 4.5V, and output drive may fall outside TTL specifications.
Is the MAX907CSA-T pin-compatible with the MAX907ESA or MAX907EPA?
Yes, the MAX907CSA-T shares identical pinout and footprint with the MAX907ESA (–40°C to +85°C) and MAX907EPA (–40°C to +85°C, DIP), as confirmed by the Pin Configurations diagram labeled "MAX907 DIP/SO TOP VIEW" showing identical 8-pin numbering and function mapping across all variants.
What is the input protection behavior of the MAX907CSA-T when driven below ground?
The MAX907CSA-T inputs tolerate –0.2V (200mV below GND) continuously per Absolute Maximum Ratings. If driven further negative, internal ESD diodes conduct-but sustained current must be limited to <25mA to avoid damage. The datasheet recommends adding a Schottky clamp (e.g., Figure 3) for reliable sub-ground operation beyond –0.2V.
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:
- Obsolete
- 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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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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