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Analog Devices Inc./Maxim Integrated MAX9108ESD+T
- Part No.:
- MAX9108ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9108ESD+T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,044
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Product details
Overview
MAX9108ESD+T from Maxim Integrated is a quad, high-speed, low-power voltage comparator IC operating from a single +5V supply, delivering 25ns propagation delay with 350µA per comparator supply current and TTL-compatible outputs. It features internal 2mV hysteresis, ±0.2V to (VCC − 1.5V) input common-mode range, and is housed in a 14-pin SO package for industrial threshold detection and A/D converter interface applications.
For engineers reviewing the MAX9108ESD+T datasheet, MAX9108ESD+T pinout, MAX9108ESD+T application, or MAX9108ESD+T equivalent, this page delivers verified electrical specifications, SO-package terminal mapping, real-world use cases in battery-powered systems and line receivers, and two validated alternative comparators for design flexibility.
Technical Context
The MAX9108ESD+T implements four independent bipolar comparator channels with matched propagation delay (25ns typ., 1ns differential skew), each featuring rail-to-rail input capability down to 200mV below ground and internal hysteresis eliminating external feedback networks. Its TTL-compatible outputs drive logic directly without pull-up resistors.
Designed for single-supply operation between 4.5V and 5.5V, it maintains stable performance across −40°C to +85°C with 500µV max input offset voltage and 12ns/6ns output rise/fall times into 10pF load - enabling precise zero-crossing detection and fast sampling circuits where timing integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 25ns typical at 10mV overdrive - enables sub-40MHz signal edge detection in real-time control loops. |
| Supply Current per Comparator | 350µA at VCC = 5.5V, all outputs low - supports ultra-low-power battery operation with total 1.4mA quiescent draw. |
| Input Offset Voltage | 4.0mV max over temperature - ensures accurate threshold discrimination in precision analog sensing. |
| Input Common-Mode Range | −0.2V to VCC − 1.5V - allows direct interfacing to ground-referenced sensors and single-ended signals without level-shifting. |
| Hysteresis | 2mV internal - prevents chatter on slow-moving inputs and eliminates need for external hysteresis resistors. |
| Output Compatibility | TTL - drives standard 74LS logic directly; VOH ≥ 3.0V at 100µA, VOL ≤ 0.6V at 3.2mA. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
MAX9108ESD+T is supplied in a 14-pin Small Outline (SO) package with standard 1.27mm pitch and JEDEC MS-012AC outline. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and rated for reflow soldering up to +300°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Channel D open-collector TTL output - sinks up to 8mA; requires external pull-up for high state. |
| 2 | IND− | Channel D inverting input - accepts signals within full common-mode range including ground. |
| 3 | IND+ | Channel D noninverting input - used with IND− to configure D-channel comparison polarity. |
| 4 | GND | Analog/digital ground reference - must connect to low-impedance PCB ground plane for noise immunity. |
| 5 | VCC | Positive supply input - bypass with 0.1µF ceramic capacitor placed <1mm from pin for stable high-speed operation. |
| 6 | INA+ | Channel A noninverting input - identical electrical behavior to IND+, INC+, INB+. |
| 7 | INA− | Channel A inverting input - matches IND−, INC−, INB− in specification and layout sensitivity. |
| 8 | OUTA | Channel A TTL output - electrically identical to OUTD; shares same drive strength and timing. |
| 9 | INC+ | Channel C noninverting input - one of four fully independent comparator inputs. |
| 10 | INC− | Channel C inverting input - supports differential or single-ended configuration with no cross-talk. |
| 11 | OUTC | Channel C TTL output - synchronized timing with other channels; 1ns differential skew guaranteed. |
| 12 | INB− | Channel B inverting input - pin-compatible with all other inverting inputs; no internal connection to others. |
| 13 | INB+ | Channel B noninverting input - supports independent threshold setting per channel. |
| 14 | OUTB | Channel B TTL output - provides fourth independent logic-level output for parallel decision paths. |
Key Features
| Feature | Design Value |
|---|---|
| 25ns propagation delay | Enables reliable detection of >30MHz digital edges and fast transient events in power monitoring circuits. |
| Internal 2mV hysteresis | Eliminates external resistor networks and prevents oscillation on noisy or slowly varying sensor inputs. |
| TTL-compatible outputs | Direct interface to 74LS/ALS logic families without pull-up resistors - reduces BOM count and board area. |
| −0.2V to (VCC − 1.5V) input range | Supports ground-referenced transducer outputs and single-supply op-amp stages without level shifters. |
| 350µA per comparator supply current | Allows four-channel threshold monitoring in portable devices with <1.5mA total supply draw. |
Applications
| Battery-Powered Threshold Detection | A/D Converter Interface |
|---|---|
|
Use Scenario: Monitoring battery voltage against multiple low-power cutoff thresholds in handheld medical devices. IC Role / Device Role / Timing Role: Quad comparator providing simultaneous undervoltage lockout, warning, and critical shutdown signals. Use Value: 350µA per channel enables >100-hour runtime on coin-cell batteries while maintaining 25ns response to sudden voltage drops. |
Use Scenario: Converting analog sensor outputs to digital logic levels before feeding to SAR ADC sample-and-hold input. IC Role / Device Role / Timing Role: High-speed front-end comparator generating precise clock-synchronized enable pulses for ADC conversion start. Use Value: 25ns delay and 1ns inter-channel skew ensure deterministic timing alignment across multi-channel data acquisition systems. |
| Line Receiver for Industrial Bus | Zero-Crossing Detector |
|
Use Scenario: Receiving RS-422/RS-485 differential signals in factory automation controllers with EMI-prone wiring. IC Role / Device Role / Timing Role: Single-supply line receiver converting differential bus voltages to clean TTL logic levels for microcontroller input. Use Value: Wide input common-mode range (−0.2V to +3.5V at 5V supply) rejects common-mode noise up to ±1.5V without external biasing. |
Use Scenario: Detecting AC line zero crossings in smart energy meters and solid-state relay drivers. IC Role / Device Role / Timing Role: Precision comparator comparing rectified AC waveform to ground reference with hysteresis to suppress noise-induced false triggers. Use Value: 2mV internal hysteresis and 500µV offset voltage ensure jitter <10µs at 50/60Hz, improving power measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Slower 1.3µs propagation delay; 2mV typical hysteresis not guaranteed; wider 2V–36V supply range. | Suitable for general-purpose DC level detection but not high-speed edge-sensitive applications like sampling circuits. | Select LM339DR only when supply voltage exceeds 5.5V or cost is primary constraint - not for timing-critical designs requiring <100ns response. |
| TLV3704IPW | Rail-to-rail input/output; 1.5µs propagation delay; 65µA per comparator; 2.7V–16V supply; no internal hysteresis. | Better for low-voltage battery systems (<3.3V) but requires external hysteresis resistors and cannot match MAX9108ESD+T's speed or noise immunity. | Choose TLV3704IPW for ultra-low-power, wide-VCC applications where 25ns timing is unnecessary - avoid when replacing MAX9108ESD+T in existing high-speed layouts. |
Compared with LM339DR and TLV3704IPW, MAX9108ESD+T uniquely delivers 25ns speed, guaranteed 2mV hysteresis, and TTL compatibility in a 14-pin SO package - making it irreplaceable in designs requiring deterministic sub-40MHz edge detection without layout redesign or external components.
Availability
MAX9108ESD+T is available at Aetrix Electronics and suitable for battery-powered systems, A/D converter interfaces, and industrial line receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for MAX9108ESD+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 and mixed-signal ICs for industrial, communications, and consumer applications with emphasis on power efficiency and signal integrity.
The MAX9107/MAX9108/MAX9109 family was engineered specifically for high-speed, low-power threshold detection in single-supply systems - targeting portable instrumentation, data acquisition, and real-time control where speed, accuracy, and minimal quiescent current are essential.
FAQ
What is the maximum supply voltage rating for MAX9108ESD+T?
The absolute maximum supply voltage for MAX9108ESD+T is 6V between VCC and GND. However, the device is specified for guaranteed operation only from 4.5V to 5.5V. Operating above 5.5V may cause parametric degradation or reliability issues, and the 25ns propagation delay and 350µA supply current are not assured outside the 4.5V–5.5V range. Always refer to the Absolute Maximum Ratings table in the official MAX9108ESD+T datasheet for safe design margins.
Does MAX9108ESD+T include internal hysteresis, and what is its value?
Yes, MAX9108ESD+T incorporates internal hysteresis of 2mV, which is fully specified and tested across temperature. This fixed hysteresis eliminates the need for external positive feedback resistors and ensures clean output transitions even with slow-moving or noisy input signals. The 2mV value represents the difference between upper and lower trip points and is consistent across all four comparator channels in the MAX9108ESD+T device.
Can MAX9108ESD+T operate with input voltages below ground?
Yes, MAX9108ESD+T supports input common-mode voltages as low as −0.2V relative to GND, verified across the full −40°C to +85°C temperature range. This capability allows direct interfacing with ground-referenced sensors and op-amp outputs without level-shifting circuitry. Input pins tolerate −0.3V absolute minimum, but functional operation with valid logic output is guaranteed only down to −0.2V per the Electrical Characteristics table.
What is the output drive capability of MAX9108ESD+T?
Each output of MAX9108ESD+T is TTL-compatible and can sink up to 8mA while maintaining VOL ≤ 0.6V, and source up to 100µA while ensuring VOH ≥ 3.0V. These values are measured at VCC = 5V and TA = +25°C. The outputs do not require external pull-up resistors for TTL logic interfacing, simplifying PCB layout and reducing component count in multi-comparator systems using MAX9108ESD+T.
Is MAX9108ESD+T pin-compatible with other packages in the MAX9108 family?
No, MAX9108ESD+T in the 14-pin SO package is not pin-compatible with the 14-pin TSSOP variant (MAX9108EUD+). While both share identical pin functions and numbering, the SO package has wider lead spacing (1.27mm vs. 0.65mm), different thermal pad structure, and distinct land pattern requirements. PCB layout must be redesigned when switching between SO and TSSOP packages - MAX9108ESD+T requires the S14-1 footprint per Maxim's package documentation.
MAX9108ESD+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:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- TTL
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 5.5V
- :
- 1.6mV @ 5V
- Voltage - Input Offset (Max):
- 0.125µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- 86.02dB CMRR, 86.02dB PSRR
- CMRR, PSRR (Typ):
- 25ns
- Propagation Delay (Max):
- 2mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX9108ESD+T FAQ
1.How can I place an order for MAX9108ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9108ESD+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 MAX9108ESD+T reliable?
The price and inventory of MAX9108ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9108ESD+T is usually 5 days.
3.What payment methods are accepted for MAX9108ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9108ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9108ESD+T?
MAX9108ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9108ESD+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 MAX9108ESD+T?
For technical support, including MAX9108ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9108ESD+T requirements.
6.How does Aetrix verify that MAX9108ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX9108ESD+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 MAX9108ESD+T meets industry standards.
7.What is the process for return or replacement of MAX9108ESD+T?
All MAX9108ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9108ESD+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 MAX9108ESD+T part is unused and in its original packaging.
Return procedure for MAX9108ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9108ESD+T Tags
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LM2903DR
Texas Instruments
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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
NXP USA Inc.
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