My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX912CSE-T
- Part No.:
- MAX912CSE-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX912CSE-T.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,334
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX912CSE-T from Maxim Integrated is a dual, ultra-fast, low-power precision TTL comparator with differential inputs and complementary TTL outputs. It delivers 10ns typical propagation delay, ±5V or single +5V operation, and stable linear-region behavior-enabling high-resolution zero-crossing detection and V/F conversion in power-constrained industrial and telecom systems.
For engineers reviewing the MAX912CSE-T datasheet, MAX912CSE-T pinout, MAX912CSE-T application, or MAX912CSE-T equivalent, this page provides verified package mapping (16-pin narrow SO), latch-enabled dual-channel timing behavior, input range extending below negative rail, and confirmed alternatives for high-speed comparator selection in switching regulators and Ethernet line receivers.
Technical Context
The MAX912CSE-T implements a fully differential bipolar input stage with trimmed offset voltage (0.8mV typ) and no built-in hysteresis, enabling true high-resolution comparison of slow-moving signals without oscillation in the linear region. Its latch-enable architecture supports synchronous sampling with independent LEA/LEB controls per channel.
It operates from ±5V or single +5V supplies, with common-mode input range spanning –5.2V to +3.5V (±5V mode) or –0.2V to +3.5V (+5V mode). Output stages deliver TTL-compatible VOH ≥ 2.4V (IOUT = 10mA) and VOL ≤ 0.4V (ISINK = 10mA), with per-comparator supply current of 6mA (+5V) and 1–2mA (–5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 10ns typical (ΔVIN = 100mV, VOD = 20mV); enables ≤85MHz signal sampling in latch-transparent mode. |
| Input Offset Voltage | 0.8mV typical at +25°C; ensures sub-millivolt resolution for precision threshold detection. |
| Supply Range | Single +5V (4.5V–5.5V) or dual ±5V; supports legacy TTL logic interfacing and mixed-rail systems. |
| Input Common-Mode Range | –5.2V to +3.5V (±5V); extends 200mV below negative rail-critical for ground-referenced sensor interfaces. |
| Output Type | Complementary TTL (QA/QA, QB/QB); drives standard 74LS loads without level-shifting. |
| Latch Enable Function | Independent LEA/LEB pins; allows asynchronous latching per comparator with 2ns setup/5ns hold timing. |
| Power Consumption | 6mA per comparator on +5V rail; enables dual-channel high-speed comparison at <12mW total analog power. |
Pinout & Package
MAX912CSE-T is housed in a 16-pin narrow SO (SOIC-N) package, 3.9mm × 9.9mm body, 1.27mm pitch, with exposed pad not present. Pin 1 marked by notch or dot; pins 3 and 14 are GND (must both be connected to system ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | QA, QB | TTL output (active-high) for Comparator A and B; sinks 10mA, sources 1mA. |
| 2, 15 | QA, QB | Complementary TTL output (active-low); matches QA/QB logic states with inverted polarity. |
| 3, 14 | GND | Logic ground reference; both pins must be tied to PCB ground plane for noise immunity. |
| 4, 13 | LEA, LEB | Latch enable inputs; TTL-high or floating = latch held; TTL-low = transparent mode. |
| 5, 12 | N.C. | No internal connection; leave unconnected and unstubbed on PCB. |
| 6 | V− | Negative supply terminal; connect to –5V (dual) or GND (single +5V) with 0.1µF ceramic bypass. |
| 7, 9 | INA−, INB+ | Inverting input (A), noninverting input (B); differential pair with 80dB CMRR and no minimum slew-rate requirement. |
| 8, 10 | INA+, INB− | Noninverting input (A), inverting input (B); supports rail-to-rail common-mode swing including negative rail. |
| 11 | V+ | Positive supply terminal; connect to +5V with 0.1µF ceramic + 10µF tantalum bypass to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Stable linear-region operation | Eliminates need for external hysteresis-preserves full input resolution down to DC without oscillation. |
| Independent dual-channel latching | Separate LEA/LEB pins allow asynchronous capture of two independent analog thresholds with precise timing control. |
| Rail-to-rail input capability | Inputs tolerate voltages up to 14V above V−; enables direct interface with sensors, op-amp outputs, and DACs. |
| Low-noise supply-current profile | No current spiking during transitions; avoids supply rail disturbance in sensitive mixed-signal systems. |
| Wide temperature performance | Specified over 0°C to +70°C (C-grade); offset drift only 2µV/°C ensures stable threshold accuracy across ambient range. |
Applications
| Zero-Crossing Detectors | Ethernet Line Receivers |
|---|---|
|
Use Scenario: Detecting AC waveform polarity reversal in motor control feedback or power metering circuits. IC Role / Device Role / Timing Role: Dual comparator monitors differential line voltage; QA/QA detects rising edge, QB/QB detects falling edge with simultaneous latching. Use Value: 10ns propagation delay and linear-region stability enable accurate zero-crossing timing within ±100ps jitter-critical for phase-locked loop synchronization. |
Use Scenario: Recovering digital data from differential Ethernet PHY signals (e.g., 10BASE-T). IC Role / Device Role / Timing Role: MAX912CSE-T acts as a high-speed differential line receiver, converting twisted-pair voltage swings into clean TTL logic levels. Use Value: Input common-mode range down to –5.2V supports legacy transceiver biasing schemes; complementary outputs drive RS-422 receivers directly. |
| Switching Regulators | High-Speed Sampling Circuits |
|
Use Scenario: Threshold comparison in peak-current-mode PWM controllers for DC-DC converters. IC Role / Device Role / Timing Role: Comparator A compares sensed inductor current against reference; Comparator B monitors output voltage for overvoltage protection. Use Value: Independent latch enables synchronous sampling of current and voltage at exact clock edges-reducing duty-cycle error in high-frequency (>1MHz) regulators. |
Use Scenario: Triggering ADC acquisition windows in digitizers or oscilloscopes using fast analog events. IC Role / Device Role / Timing Role: MAX912CSE-T generates precise strobe pulses from analog trigger signals; latch function freezes decision state for downstream logic. Use Value: 500ps channel-to-channel delay matching ensures sub-nanosecond timing correlation between dual trigger paths-essential for time-interleaved sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM311DR | Slower (200ns propagation), no latch, open-collector output requiring pull-up; higher offset (2mV), no linear-region stability guarantee. | Used in cost-sensitive, low-speed comparators where latch function and nanosecond timing are unnecessary. | Select LM311DR only when budget constraints outweigh speed, latch, and precision requirements. |
| LT1016CS8#TRPBF | Similar 10ns speed but single-channel; no latch; requires ±5V only; higher quiescent current (7mA vs. 6mA); lacks linear-region stability claim. | Deployed in legacy designs where single comparator suffices and latch functionality is implemented externally. | Choose LT1016CS8#TRPBF if replacing older LT1016-based boards and dual-channel/latch features are unused. |
Compared with MAX912CSE-T, LM311DR trades speed and integration for cost, while LT1016CS8#TRPBF offers comparable speed in single-channel form but omits latch control and linear-region assurance-making MAX912CSE-T uniquely suited for synchronized dual-threshold detection in power and comms systems.
Availability
MAX912CSE-T is available at Aetrix Electronics and suitable for switching regulators, Ethernet line receivers, and high-speed sampling circuits requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX912CSE-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 computing applications.
The MAX912CSE-T belongs to Maxim's precision high-speed comparator product line, designed specifically for applications demanding nanosecond timing accuracy, latch-synchronized decision making, and stable operation across wide input common-mode ranges-including rail-to-rail and negative-voltage sensing.
FAQ
What is the operating temperature range for MAX912CSE-T?
The MAX912CSE-T is rated for 0°C to +70°C (Commercial grade). This range is explicitly defined in the Ordering Information table and confirmed in Absolute Maximum Ratings. The 'C' suffix in MAX912CSE-T denotes the 0°C to +70°C specification, distinguishing it from E-grade (–40°C to +85°C) variants like MAX912ESE. All electrical characteristics-including propagation delay, offset voltage, and supply current-are guaranteed across this full commercial temperature span.
Does MAX912CSE-T require external hysteresis for stable operation?
No, MAX912CSE-T does not require external hysteresis. Its unique design eliminates oscillation in the linear region, as confirmed in the Detailed Description section and Typical Operating Characteristics. Unlike many high-speed comparators, MAX912CSE-T maintains stable output even with slow-moving or low-slew-rate input signals crossing the threshold-preserving full resolution without sacrificing bandwidth or introducing hysteresis-induced dead zones.
What are the supply voltage requirements for MAX912CSE-T?
MAX912CSE-T supports two configurations: single +5V (4.5V to 5.5V) with V− tied to GND, or dual ±5V (V+ = +5V, V− = –5V). The Absolute Maximum Ratings specify +7V and –7V limits, but functional operation is guaranteed only within the specified supply ranges. Bypassing each supply with a 0.1µF ceramic capacitor placed close to the pins is mandatory for stable high-speed performance.
How does the latch function work on MAX912CSE-T?
MAX912CSE-T features independent latch-enable inputs LEA (Pin 4) and LEB (Pin 13). When LEA or LEB is driven high (≥2.0V) or left floating, the corresponding comparator's output (QA/QA or QB/QB) holds its last valid state. When pulled low (≤0.8V), the latch becomes transparent and outputs respond immediately to input differential voltage. Setup time is 2ns and hold time is 5ns-guaranteed by design per the datasheet timing notes.
Is MAX912CSE-T pin-compatible with other MAX912 variants?
Yes, MAX912CSE-T shares identical pinout and footprint with all 16-pin MAX912 variants-including MAX912CPE (DIP), MAX912EPE (extended-temp DIP), and MAX912ESE (extended-temp SO). The 'CSE' designation confirms 16-pin narrow SO packaging and commercial temperature grade; mechanical compatibility is validated in the Package Information section, which references the same SOICN outline for all 16-pin versions.
MAX912CSE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Latch
- Number of Elements:
- 2
- Output Type:
- Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 5V ~ 10V
- :
- 2mV @ ±5V
- Voltage - Input Offset (Max):
- 5µA @ ±5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 10mA
- Current - Quiescent (Max):
- 110dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 14ns
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX912CSE-T FAQ
1.How can I place an order for MAX912CSE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX912CSE-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 MAX912CSE-T reliable?
The price and inventory of MAX912CSE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX912CSE-T is usually 5 days.
3.What payment methods are accepted for MAX912CSE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX912CSE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX912CSE-T?
MAX912CSE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX912CSE-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 MAX912CSE-T?
For technical support, including MAX912CSE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX912CSE-T requirements.
6.How does Aetrix verify that MAX912CSE-T is sourced from the original manufacturer or authorized distributors?
All MAX912CSE-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 MAX912CSE-T meets industry standards.
7.What is the process for return or replacement of MAX912CSE-T?
All MAX912CSE-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX912CSE-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 MAX912CSE-T part is unused and in its original packaging.
Return procedure for MAX912CSE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX912CSE-T Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
