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Analog Devices Inc./Maxim Integrated MAX9686BCSA+
- Part No.:
- MAX9686BCSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9686BCSA+.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,185
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Product details
Overview
MAX9686BCSA+ from Maxim Integrated is a single, very fast TTL-output comparator fabricated in a high-frequency bipolar process (fT = 6GHz), delivering 6ns propagation delay, ±5V dual-supply operation, and differential inputs with complementary TTL-compatible outputs. It is used in high-speed threshold detection within analog-to-digital converter front-ends and precision timing triggers.
For engineers reviewing the MAX9686BCSA+ datasheet, MAX9686BCSA+ pinout, MAX9686BCSA+ application, or MAX9686BCSA+ equivalent, key selection considerations include latch-enable timing (2ns setup), input offset voltage (±3mV), supply current (25mA), and SO-8 package compatibility with legacy high-speed comparator layouts.
Technical Context
The MAX9686BCSA+ implements a fully differential, high-gain bipolar comparator core with internal latch control logic. Its TTL-compatible complementary outputs drive standard logic loads directly, and the LE pin enables synchronous sampling of input states at up to 200MHz signal rates.
It operates from ±5.2V supplies with input common-mode range of ±3V and supports latched operation without external components-LE must be grounded if unused. Propagation delay skew between rising/falling edges is guaranteed ≤0.3ns over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 6.0ns typical (input to output high); enables clean decision-making on sub-10ns edge transitions. |
| Latch Setup Time | 2ns maximum; defines minimum time input must stabilize before LE rising edge for reliable capture. | Supply Voltage | ±5.2V; supports rail-to-rail input swing and TTL-level output drive without level-shifting. |
| Input Offset Voltage | ±3mV max; ensures accurate threshold detection in precision analog trigger circuits. |
| Output Current Drive | ±20mA; directly interfaces with TTL/74LS logic families without buffer stages. |
| Operating Temp Range | 0°C to +70°C; qualified for commercial-grade instrumentation and data acquisition systems. |
Pinout & Package
MAX9686BCSA+ is housed in an 8-pin SO (Small Outline) package with gull-wing leads, JEDEC MS-012AC compliant, 150°C max soldering temperature, and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for both input and output stages; must be low-inductance connection. |
| 2 | LE | Latch Enable input; active-high TTL-compatible control for synchronous sampling. |
| 3 | +IN | Non-inverting input terminal; accepts DC-coupled or AC-coupled analog signals up to ±3V. |
| 4 | -IN | Inverting input terminal; differential pair with +IN defines comparison threshold. |
| 5 | V− | Negative supply rail (−5.2V); powers internal bipolar transistors and output stage. |
| 6 | OUT | True TTL output (active-high); sinks 8mA or sources 3mA at valid logic levels. |
| 7 | OUT | Complementary TTL output (active-low); matches OUT timing with <0.3ns skew. |
| 8 | V+ | Positive supply rail (+5V); decoupling capacitor required within 5mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| 6GHz fT bipolar process | Enables sub-10ns propagation with stable DC matching-unusual for comparators exceeding 200MHz operation. |
| Complementary TTL outputs | Eliminates need for external inverters in latch-based sampling architectures like flash ADCs. |
| Latch-enable synchronization | Allows precise time-domain capture of transient events without external flip-flops or clock domain crossing. |
| ±3mV input offset voltage | Supports accurate threshold detection in 12-bit+ data acquisition systems where offset drift affects linearity. |
Applications
| High-Speed Analog-to-Digital Converters | High-Speed Line Receivers |
|---|---|
Use Scenario: Front-end comparator bank in flash or folding ADC architectures sampling >100MSPS. IC Role / Device Role / Timing Role: Decision element converting analog input slices into parallel digital bits with minimal aperture jitter. Use Value: 6ns propagation delay and <0.3ns skew reduce timing uncertainty, improving effective resolution by up to 0.5 LSB. | Use Scenario: ECL/TTL-level signal recovery from lossy transmission lines in backplane or telecom interfaces. IC Role / Device Role / Timing Role: High-bandwidth threshold detector reconstructing logic states from degraded waveforms. Use Value: ±3V input common-mode range accommodates DC-biased line signals; complementary outputs drive bus transceivers directly. |
| Peak Detectors | High-Speed Triggers |
Use Scenario: Capturing amplitude peaks in pulsed RF or laser pulse monitoring systems. IC Role / Device Role / Timing Role: Fast comparator with latch enabling snapshot capture of peak voltage at precise instants. Use Value: 2ns latch setup time allows triggering on pulses as narrow as 5ns, supporting >200MHz pulse repetition rates. | Use Scenario: Edge-triggered oscilloscope or logic analyzer input conditioning. IC Role / Device Role / Timing Role: Precision timing discriminator generating clean strobes synchronized to input zero-crossings. Use Value: Differential inputs reject common-mode noise on probe cables; TTL outputs interface directly with FPGA capture logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1016CS8#PBF | Slower propagation (10ns typ), no latch enable, single-supply capable (up to 40V). | Preferred in wide-VCC industrial sensors; unsuitable for synchronous sampling above 100MHz. | Select when latch function is unnecessary and supply flexibility outweighs speed. |
| ADCMP572BCPZ-R2 | Faster (2.5ns typ), ECL output, requires level translation for TTL interfacing. | Used in RF test equipment requiring sub-3ns timing; adds complexity for TTL-system integration. | Select only when absolute speed dominates and ECL infrastructure exists. |
Compared with LT1016CS8#PBF and ADCMP572BCPZ-R2, the MAX9686BCSA+ uniquely balances TTL compatibility, integrated latch control, and 6ns speed-making it optimal for legacy high-speed data acquisition where board space and logic simplicity constrain redesign.
Availability
MAX9686BCSA+ is available at Aetrix Electronics and suitable for high-speed analog-to-digital converters, precision threshold detectors, peak-hold circuits, and synchronous trigger generators requiring stable component supply across extended production lifecycles.
Supply support for MAX9686BCSA+ 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 power management ICs for industrial, communications, and computing applications.
The MAX9686BCSA+ belongs to Maxim's high-speed comparator product line, engineered specifically for sub-10ns decision latency in real-time signal conditioning and digitization systems.
FAQ
What is the recommended power supply configuration for MAX9686BCSA+?
The MAX9686BCSA+ requires dual supplies: +5V on pin 8 (V+) and −5.2V on pin 5 (V−). Decoupling capacitors (0.1µF ceramic + 10µF tantalum) must be placed within 5mm of each supply pin. Ground (pin 1) must connect to a low-inductance plane. Operation outside ±6V absolute maximum risks permanent damage.
Does MAX9686BCSA+ support latched operation, and how is it configured?
Yes, MAX9686BCSA+ supports latched operation via pin 2 (LE). When LE is driven high, outputs hold the state present at the inputs during the LE rising edge. If latching is unused, LE must be tied to ground-floating LE causes undefined behavior. Minimum LE pulse width is specified at 20ns.
What is the input voltage range specification for MAX9686BCSA+?
The MAX9686BCSA+ has an input common-mode voltage range of ±3.0V (relative to GND) under ±5V supplies. Differential input voltage must not exceed 5V. Exceeding these ranges may cause output phase reversal or increased propagation delay variation.
Is MAX9686BCSA+ pin-compatible with other comparators in its family?
Yes, MAX9686BCSA+ shares identical pinout with MAX9686CPA (PDIP), MAX9686CJA (CERDIP), and MAX9686CTV (TO-99). All variants use the same SO-8 footprint mapping for pins 1–8, enabling direct PCB substitution where thermal and package constraints allow.
Why is MAX9686BCSA+ marked "Not Recommended for New Designs"?
MAX9686BCSA+ is marked "Not Recommended for New Designs" because its wafer process was discontinued by Maxim's external foundry. While existing inventory remains functional and supported, Maxim advises new designs to evaluate replacements like MAX9600 or industry alternatives to ensure long-term supply continuity.
MAX9686BCSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Complementary
- Voltage - Supply, Single/Dual (±):
- ±6V
- :
- 3mV @ ±5V
- Voltage - Input Offset (Max):
- 25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 20mA, 25mA
- Current - Quiescent (Max):
- 96dB CMRR, 85dB PSRR
- CMRR, PSRR (Typ):
- 9ns
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9686BCSA+ FAQ
1.How can I place an order for MAX9686BCSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9686BCSA+ 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 MAX9686BCSA+ reliable?
The price and inventory of MAX9686BCSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9686BCSA+ is usually 5 days.
3.What payment methods are accepted for MAX9686BCSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9686BCSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9686BCSA+?
MAX9686BCSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9686BCSA+ 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 MAX9686BCSA+?
For technical support, including MAX9686BCSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9686BCSA+ requirements.
6.How does Aetrix verify that MAX9686BCSA+ is sourced from the original manufacturer or authorized distributors?
All MAX9686BCSA+ 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 MAX9686BCSA+ meets industry standards.
7.What is the process for return or replacement of MAX9686BCSA+?
All MAX9686BCSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9686BCSA+, 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 MAX9686BCSA+ part is unused and in its original packaging.
Return procedure for MAX9686BCSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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