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Diodes Incorporated AS393MMTR-G1
- Part No.:
- AS393MMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AS393MMTR-G1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,165
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Product details
Overview
AS393MMTR-G1 from Diodes Incorporated is a low-power, low-offset-voltage dual comparator IC with 1.0 mV typical input offset voltage, 0.6 mA supply current, and open-collector outputs. It operates from single supplies (2 V to 36 V) or split supplies (±1.0 V to ±18 V), supports rail-to-rail input common-mode range including ground, and is qualified for industrial temperature range (−40 °C to +85 °C). It is used in battery chargers, DC-DC modules, and PC motherboard power monitoring circuits.
For engineers reviewing the AS393MMTR-G1 datasheet, AS393MMTR-G1 pinout, AS393MMTR-G1 application, or AS393MMTR-G1 equivalent, key selection criteria include input offset voltage tightness, supply voltage flexibility, open-collector output compatibility with TTL/CMOS logic, and MSOP-8 footprint suitability for space-constrained power management designs.
Technical Context
The AS393MMTR-G1 implements two independent high-gain comparators with PNP-input stage architecture, enabling input common-mode voltage down to ground and differential input swing up to full supply rails. Its input bias current (25 nA typ.) and offset current (±5.0 nA typ.) are optimized for precision sensing in low-current applications.
It features open-collector outputs capable of sinking 16 mA at 1.5 V saturation, with 200 mV typical saturation voltage at 4 mA load. The device maintains stable performance across −40 °C to +85 °C and exhibits 200 ns typical large-signal response time under TTL-level input transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1.0 mV typical - enables accurate threshold detection in battery voltage monitoring and overvoltage protection circuits |
| Supply Current | 0.6 mA typical at 5 V - supports energy-efficient operation in always-on power supervision stages |
| Input Bias Current | 25 nA typical - minimizes error in high-impedance sensor interface and reference divider networks |
| Output Type | Open-collector - allows wired-OR logic, level translation, and direct interface with 3.3 V/5 V microcontroller interrupt inputs |
| Supply Range | Single: 2 V to 36 V - accommodates wide-input DC-DC converters and automotive 12 V/24 V systems without external regulation |
| Response Time | 200 ns typical - suitable for fast transient detection in switching power supply feedback and fault latching |
| Operating Temp | −40 °C to +85 °C - meets industrial-grade reliability requirements for embedded power management |
Pinout & Package
AS393MMTR-G1 is housed in a thermally enhanced MSOP-8 package (4.7 mm × 3.1 mm × 0.8 mm), RoHS-compliant and halogen-free ("Green"), with exposed pad optional per design. Pin assignments follow industry-standard dual-comparator layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Open-collector output of Comparator 1 - requires external pull-up for logic-high assertion |
| 2 | Inverting Input 1 | Negative input of Comparator 1 - accepts signals down to ground, supports rail-to-rail common-mode range |
| 3 | Non-inverting Input 1 | Positive input of Comparator 1 - used for reference comparison or zero-crossing detection |
| 4 | GND | Analog ground reference - shared return path for both comparators and internal bias circuitry |
| 5 | Non-inverting Input 2 | Positive input of Comparator 2 - independently configurable for dual-threshold or window detection |
| 6 | Inverting Input 2 | Negative input of Comparator 2 - supports differential sensing or inverted signal comparison |
| 7 | Output 2 | Open-collector output of Comparator 2 - electrically isolated from Output 1 for independent fault signaling |
| 8 | VCC | Positive supply rail - powers both comparators; tolerant to 40 V absolute max, enabling robust input overvoltage handling |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from 2 V to 36 V single supply - eliminates need for dedicated LDO in multi-rail systems |
| Low Input Offset Voltage | 1.0 mV typical (AS393A-grade) - ensures <±5 mV total error in 5 V reference-based overvoltage detection |
| Ground-Sensing Inputs | Input common-mode includes 0 V - enables direct battery negative-side monitoring without level-shifting |
| Open-Collector Outputs | 16 mA sink capability at 1.5 V VO(sat) - drives LEDs, optocouplers, or microcontroller interrupts directly |
| Green Packaging | MSOP-8 with halogen/antimony-free molding compound - satisfies IPC-1752A environmental compliance reporting |
Applications
| Battery Charger Monitoring | DC-DC Module Fault Detection |
|---|---|
|
Use Scenario: Real-time monitoring of battery cell voltage and charging current thresholds in portable Li-ion chargers. IC Role / Device Role / Timing Role: Dual comparator performs simultaneous overvoltage and overcurrent flagging using separate reference inputs. Use Value: 1.0 mV offset ensures ±2 mV detection accuracy at 4.2 V nominal, preventing false trips during charge termination. |
Use Scenario: Detecting output overvoltage, undervoltage, and thermal shutdown conditions in isolated DC-DC converters. IC Role / Device Role / Timing Role: One comparator monitors regulated output against precision reference; second validates auxiliary bias rail. Use Value: 200 ns response time enables sub-microsecond fault latching before downstream damage occurs. |
| PC Motherboard Power Sequencing | Industrial Sensor Interface |
|
Use Scenario: Validating correct ramp-up timing and voltage levels of +12 V, +5 V, and +3.3 V rails during system boot. IC Role / Device Role / Timing Role: Dual comparator compares each rail to dedicated resistor-divider thresholds, generating synchronized reset signals. Use Value: Single-supply operation from +12 V rail simplifies BOM by eliminating auxiliary bias supply for sequencing logic. |
Use Scenario: Converting analog sensor outputs (e.g., temperature, pressure) into digital status flags for PLC input modules. IC Role / Device Role / Timing Role: Comparator acts as threshold detector with hysteresis added externally via feedback resistors. Use Value: 25 nA input bias current prevents loading errors in high-impedance Wheatstone bridge or thermistor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 2.0 mV max offset voltage; 0.8 mA supply current; SO-8 only | Lacks MSOP-8 option; less suitable for compact PCB layouts requiring high-precision thresholds | Preferred where cost sensitivity outweighs offset and package size requirements |
| TL331IDBVR | Single comparator; 1.0 mV typical offset; 60 µA supply current; SOT-23-5 | Requires two devices for dual functionality; lower power but higher component count and routing complexity | Selected when ultra-low quiescent current dominates over integration and board area |
Compared with LM393DR and TL331IDBVR, AS393MMTR-G1 delivers tighter offset control in a space-saving MSOP-8 package while maintaining industry-standard pinout compatibility and robust 36 V supply tolerance-making it optimal for precision dual-threshold detection in constrained industrial power systems.
Availability
AS393MMTR-G1 is available at Aetrix Electronics and suitable for battery chargers, DC-DC modules, and PC motherboard power monitoring requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AS393MMTR-G1 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AS393/393A series targets precision analog sensing in power systems, delivering low-offset, low-power dual comparators optimized for single-supply operation and ground-referenced inputs in space- and energy-constrained designs.
FAQ
What is the maximum supply voltage rating for AS393MMTR-G1?
The absolute maximum supply voltage is 40 V, as specified in the Absolute Maximum Ratings table. Continuous operation is rated from 2 V to 36 V under Recommended Operating Conditions. Exceeding 40 V risks permanent damage, and operation above 36 V is not guaranteed for parametric performance or reliability.
Does AS393MMTR-G1 support dual-supply operation?
Yes - it supports split supplies from ±1.0 V to ±18 V. The input common-mode range includes ground, and differential input voltage can equal the total supply span. This enables use in traditional op-amp-style comparator configurations with bipolar references or AC-coupled inputs.
Can AS393MMTR-G1 drive a standard LED directly?
Yes - its open-collector output sinks up to 16 mA with 200 mV typical saturation voltage at 4 mA. With a 5 V supply and 330 Ω pull-up, it can drive a standard red LED (2.0 V forward voltage) at ~9 mA, well within safe limits. No external transistor is required for basic indicator applications.
Is the MSOP-8 package of AS393MMTR-G1 moisture-sensitive?
Yes - the MSOP-8 variant is rated Moisture Sensitivity Level (MSL) 1 per J-STD-020 for CAT conditions and MSL 3 for SAT conditions. It does not require dry-pack or baking prior to reflow, but standard humidity-controlled storage and handling per IPC/JEDEC guidelines are recommended for long-term reliability.
AS393MMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-MSOP
AS393MMTR-G1 FAQ
1.How can I place an order for AS393MMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS393MMTR-G1 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 AS393MMTR-G1 reliable?
The price and inventory of AS393MMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS393MMTR-G1 is usually 5 days.
3.What payment methods are accepted for AS393MMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS393MMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS393MMTR-G1?
AS393MMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS393MMTR-G1 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 AS393MMTR-G1?
For technical support, including AS393MMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS393MMTR-G1 requirements.
6.How does Aetrix verify that AS393MMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS393MMTR-G1 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 AS393MMTR-G1 meets industry standards.
7.What is the process for return or replacement of AS393MMTR-G1?
All AS393MMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS393MMTR-G1, 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 AS393MMTR-G1 part is unused and in its original packaging.
Return procedure for AS393MMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS393MMTR-G1 Tags
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