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Analog Devices Inc./Maxim Integrated MAX961ESA+T
- Part No.:
- MAX961ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX961ESA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,487
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Product details
Overview
MAX961ESA+T from Maxim Integrated is a single ultra-high-speed comparator with internal hysteresis, optimized for +3V or +5V single-supply operation. It features 4.5ns propagation delay (5mV overdrive), ±3.5mV input-referred hysteresis, Beyond-the-Rails™ input range (–0.1V to VCC + 0.1V), and TTL/CMOS-compatible complementary outputs with latch-enable functionality - used in GPS receivers and high-speed sampling circuits.
For engineers reviewing the MAX961ESA+T datasheet, MAX961ESA+T pinout, MAX961ESA+T application, or MAX961ESA+T equivalent, key selection criteria include propagation delay vs. overdrive, latch timing constraints (tSU = 5ns, tH = 5ns), shutdown current (270μA), rail-to-rail input capability, and SO-8 package compatibility with legacy board layouts.
Technical Context
The MAX961ESA+T implements a current-driven output stage enabling 4mA sourcing/sinking within 0.52V of GND or VCC, eliminating external pull-up resistors. Its internal 3.5mV hysteresis eliminates need for external feedback networks while preventing oscillation near trip points.
It integrates a high-impedance latch-enable (LE) input that transparently passes comparator output when low and holds state when high, with guaranteed setup/hold times of 5ns each. Shutdown mode (active-high SHDN) reduces supply current to 270μA per comparator while placing outputs in high-Z state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4.5ns typical at 5mV overdrive - enables sub-5ns decision timing in high-speed threshold detection |
| Supply Voltage Range | +2.7V to +5.5V - supports direct interface with 3.3V and 5V logic domains without level shifting |
| Input Common-Mode Range | –0.1V to VCC + 0.1V - accepts signals beyond supply rails, simplifying sensor interfacing |
| Output Drive Capability | Sinks/sources 4mA to within 0.52V of GND/VCC - directly drives TTL/CMOS loads without external buffers |
| Shutdown Current | 270μA per comparator - enables power-gating in battery-powered systems during idle periods |
| Internal Hysteresis | 3.5mV input-referred - prevents chatter on slow or noisy inputs without external resistor network |
| Latch Setup/Hold Time | 5ns each - defines minimum LE assertion window for reliable capture of transient comparator outputs |
Pinout & Package
MAX961ESA+T is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, compatible with JEDEC MS-012AC footprint and reflow soldering processes.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or tied to GND per layout best practice |
| 2 | IN− | Inverting input - differential pair node accepting signal referenced to noninverting input |
| 3 | IN+ | Noninverting input - primary sensing node for threshold comparison |
| 4 | GND | Analog/digital ground reference - requires low-inductance connection to PCB ground plane |
| 5 | Q | True TTL/CMOS output - active-high assertion when IN+ > IN− by ≥ hysteresis margin |
| 6 | Q̅ | Complementary output - inverted logic state of Q, enabling differential signaling or OR/NOR logic |
| 7 | VCC | Positive supply input - must be decoupled with 0.1μF ceramic capacitor placed adjacent to pin |
| 8 | LE | Latch-enable control - high level freezes Q/Q̅ outputs; low level enables real-time comparison |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast 4.5ns propagation delay | Enables real-time decision making in GPS timing recovery and serial data sampling at >200Mbps |
| Beyond-the-Rails™ input range | Accepts –0.1V to VCC+0.1V inputs - interfaces directly with unbuffered sensors or op-amp outputs |
| Integrated latch-enable function | Eliminates need for external D-latch ICs in sampled-data systems requiring output hold |
| 3.5mV internal hysteresis | Removes requirement for external positive-feedback resistors - reduces BOM count and layout area |
| Shutdown mode (270μA) | Supports dynamic power management in portable instruments with intermittent measurement cycles |
Applications
| GPS Receivers | High-Speed Sampling Circuits |
|---|---|
Use Scenario: Extracting precise timing edges from weak, noise-prone RF baseband signals in GNSS front-ends. IC Role / Device Role / Timing Role: Threshold detector converting analog correlation peaks into clean digital timing pulses for clock recovery. Use Value: 4.5ns propagation delay and 3.5mV hysteresis ensure jitter-free edge detection even under low-SNR conditions. | Use Scenario: Capturing fast transient events in oscilloscopes or logic analyzers with sub-5ns resolution. IC Role / Device Role / Timing Role: High-speed comparator generating strobe signals synchronized to analog input crossings. Use Value: Complementary outputs and latch-enable allow precise sampling window control without external logic. |
| Portable/Battery-Powered Systems | Zero-Crossing Detectors |
Use Scenario: Monitoring battery voltage thresholds or sensor wake-up events in handheld medical devices. IC Role / Device Role / Timing Role: Low-power comparator asserting interrupt signals when supply or sensor output crosses preset levels. Use Value: 270μA shutdown current extends battery life during standby; SO-8 package fits compact PCBs. | Use Scenario: Detecting AC line zero-crossings for phase-controlled dimmers or motor controllers. IC Role / Device Role / Timing Role: Precision comparator identifying polarity transitions in isolated AC waveforms. Use Value: Beyond-the-Rails input range accepts transformer-coupled signals without biasing resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX961EUA-T | Identical electrical specs but in 8-pin μMAX® package (3mm × 3mm); same SO-8 pinout but smaller footprint | Preferred for space-constrained designs where PCB area is critical; thermal resistance differs slightly | Select MAX961EUA-T when board real estate is limited and μMAX land pattern is available |
| TLV3501CDR | 4.5ns delay, rail-to-rail inputs, but no latch-enable or shutdown; 2.7–5.5V supply; SO-8 package | Lacks latch and shutdown functions - requires external logic for output hold or power gating | Choose TLV3501CDR only if latch and shutdown are unnecessary and cost is primary driver |
Compared with MAX961EUA-T, the MAX961ESA+T offers identical performance in a standard SO-8 package for drop-in replacement in existing layouts; versus TLV3501CDR, it adds latch and shutdown at modest cost premium - critical for portable and sampled-data systems.
Availability
MAX961ESA+T is available at Aetrix Electronics and suitable for GPS receivers, portable instrumentation, and high-speed sampling circuits requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for MAX961ESA+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) designs precision analog, mixed-signal, and high-speed ICs for industrial, communications, and consumer applications.
The MAX961ESA+T belongs to the MAX961–MAX964/MAX997/MAX999 family of ultra-high-speed comparators engineered for single-supply, low-power, rail-enhanced sensing in portable and timing-critical systems.
FAQ
What is the operating temperature range for MAX961ESA+T?
The MAX961ESA+T is specified for operation from –40°C to +85°C (E-grade). This range covers industrial and extended commercial environments. The device is not rated for automotive or extended temperature use; for –40°C to +125°C operation, consider the MAX999AAUK+T variant instead of MAX961ESA+T.
Does MAX961ESA+T support true rail-to-rail input operation?
MAX961ESA+T supports Beyond-the-Rails™ input operation: inputs can swing from –0.1V to VCC + 0.1V. This exceeds standard rail-to-rail (0V to VCC) and allows direct interfacing with signals slightly below ground or above VCC - such as op-amp outputs or transformer-coupled AC signals - without external level-shifting circuitry.
How does the latch-enable function work on MAX961ESA+T?
On MAX961ESA+T, the LE pin controls output latching: when LE is low, Q and Q̅ reflect real-time comparator decisions; when LE is high, the current output state is held regardless of subsequent input changes. Setup and hold times are both 5ns, ensuring reliable capture of fast transitions - critical for synchronizing comparator outputs to system clocks.
What is the shutdown behavior of MAX961ESA+T?
When SHDN is driven high, MAX961ESA+T enters shutdown mode, reducing supply current to 270μA per comparator and placing both Q and Q̅ outputs in high-impedance state. To exit shutdown, SHDN must be pulled low and LE must be low - otherwise output state is indeterminate. This sequence ensures predictable startup behavior in power-managed systems.
Can MAX961ESA+T drive standard TTL or CMOS logic directly?
Yes, MAX961ESA+T outputs are TTL/CMOS-compatible: they source/sink 4mA while maintaining VOH ≥ VCC – 0.52V and VOL ≤ 0.52V. This meets standard TTL VOH (≥2.4V at VCC=5V) and VOL (≤0.4V) requirements, and exceeds typical CMOS VIH/VIL thresholds - enabling direct connection to 74HC, 74AHC, and most microcontroller GPIOs without buffering.
MAX961ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 1.5mV @ 5V
- Voltage - Input Offset (Max):
- 15µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 11mA
- Current - Quiescent (Max):
- 80dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- 7ns
- Propagation Delay (Max):
- 3.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX961ESA+T FAQ
1.How can I place an order for MAX961ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX961ESA+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 MAX961ESA+T reliable?
The price and inventory of MAX961ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX961ESA+T is usually 5 days.
3.What payment methods are accepted for MAX961ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX961ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX961ESA+T?
MAX961ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX961ESA+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 MAX961ESA+T?
For technical support, including MAX961ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX961ESA+T requirements.
6.How does Aetrix verify that MAX961ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX961ESA+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 MAX961ESA+T meets industry standards.
7.What is the process for return or replacement of MAX961ESA+T?
All MAX961ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX961ESA+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 MAX961ESA+T part is unused and in its original packaging.
Return procedure for MAX961ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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