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Diodes Incorporated AS393MTR-G1
- Part No.:
- AS393MTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AS393MTR-G1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,391
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Product details
Overview
AS393MTR-G1 from Diodes Incorporated is a dual precision voltage comparator IC with 1.0 mV typical input offset voltage, 0.6 mA supply current, and open-collector outputs-designed for single-supply operation from 2 V to 36 V or split supplies (±1.0 V to ±18 V). It operates in battery chargers, DC-DC modules, and PC motherboards where low power, rail-to-rail input capability, and ground-sensing common-mode range are critical.
For engineers reviewing the AS393MTR-G1 datasheet, AS393MTR-G1 pinout, AS393MTR-G1 application, or AS393MTR-G1 equivalent, this page delivers verified package mapping (SO-8), confirmed dual-comparator architecture, exact electrical limits (e.g., 200 mV saturation voltage at 4 mA), and real-world use cases in switching power supplies and communication equipment.
Technical Context
The AS393MTR-G1 implements two independent high-gain comparators with PNP input stages enabling input common-mode voltage down to ground and up to VCC−1.5 V. Its differential input voltage range equals the full supply voltage (up to ±40 V), supporting robust overvoltage tolerance without damage.
Each comparator features open-collector output capable of sinking 16 mA, with 200 mV typical saturation voltage at 4 mA load. Input bias current is 25 nA (typ), and input offset current is ±5.0 nA (typ), ensuring minimal error in precision threshold detection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 2 V to 36 V; Dual: ±1.0 V to ±18 V - enables direct integration into 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting. |
| Input Offset Voltage | 1.0 mV (typ), ≤5.0 mV (max) - ensures accurate voltage threshold detection in battery monitoring and overvoltage protection. |
| Supply Current | 0.6 mA (typ) at VCC = 5 V - supports low-power portable and always-on applications like cordless telephones. |
| Input Bias Current | 25 nA (typ) - minimizes loading on high-impedance sensor or reference networks. |
| Output Sink Current | 16 mA (min) - drives standard TTL/CMOS logic inputs and small relays directly. |
| Saturation Voltage | 200 mV (typ) at ISINK = 4 mA - reduces power loss and improves noise margin in digital interface stages. |
| Common-Mode Range | 0 V to VCC−1.5 V - allows direct sensing of signals referenced to ground in single-supply configurations. |
Pinout & Package
AS393MTR-G1 is housed in an SO-8 (Small Outline Integrated Circuit, 150 mil width) package with matte tin-plated leads, RoHS-compliant and halogen-free ("Green") per Diodes' specification. Moisture sensitivity level is Level 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Open-collector output of Comparator 1 - requires external pull-up to define logic HIGH level. |
| 2 | Inverting Input 1 | Negative input of Comparator 1 - accepts signals from 0 V to VCC−1.5 V. |
| 3 | Non-inverting Input 1 | Positive input of Comparator 1 - same common-mode range as Pin 2. |
| 4 | GND | Analog ground reference - must be connected to system ground for stable operation. |
| 5 | Non-inverting Input 2 | Positive input of Comparator 2 - electrically identical to Pin 3. |
| 6 | Inverting Input 2 | Negative input of Comparator 2 - electrically identical to Pin 2. |
| 7 | Output 2 | Open-collector output of Comparator 2 - independently configurable with its own pull-up. |
| 8 | VCC | Positive supply rail - powers both comparators; supports wide voltage range (2–36 V). |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset voltage | 1.0 mV typical - enables precise window or zero-crossing detection in analog monitoring circuits. |
| Ground-sensing input stage | Input common-mode includes 0 V - eliminates need for negative supply in single-rail systems like USB-powered devices. |
| Wide supply range compatibility | Operates from 2 V to 36 V single supply - supports legacy 24 V industrial rails and modern 3.3 V microcontroller interfaces. |
| Open-collector outputs | Independent sink capability up to 16 mA - allows wired-OR logic, level translation, and direct LED driving. |
| Lead-free & Green packaging | SO-8 with halogen/antimony-free molding compound - meets automotive and industrial environmental compliance requirements. |
Applications
| Battery Charger Monitoring | DC-DC Module Feedback |
|---|---|
|
Use Scenario: Detecting full-charge condition and overvoltage thresholds in lithium-ion battery charging circuits. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against precision reference and safety cutoff levels. Use Value: 1.0 mV offset ensures <±5 mV total error in charge termination, preventing overcharge and extending cell life. |
Use Scenario: Providing fast-response overvoltage and undervoltage protection in isolated DC-DC converters. IC Role / Device Role / Timing Role: One comparator monitors output voltage; second monitors primary-side auxiliary winding for fault detection. Use Value: 200 ns response time to 5 mV overdrive enables sub-microsecond shutdown, protecting downstream loads. |
| PC Motherboard Power Sequencing | Communication Equipment Threshold Detection |
|
Use Scenario: Validating 12 V, 5 V, and 3.3 V rail presence before enabling CPU or memory subsystems. IC Role / Device Role / Timing Role: Each comparator independently verifies one supply rail against a fixed reference. Use Value: 0.6 mA quiescent current minimizes standby power impact across multiple monitored rails. |
Use Scenario: Detecting line signal integrity and loss-of-signal (LOS) in DSL or baseband modems. IC Role / Device Role / Timing Role: Compares received analog signal amplitude against programmable thresholds. Use Value: Input bias current of 25 nA avoids loading sensitive RF front-end filter 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 offset voltage (2.0 mV typ), higher supply current (0.8 mA typ), no guaranteed ground-sensing input. | Less suitable for precision battery cutoff or low-voltage rail monitoring where sub-5 mV accuracy is required. | Select when cost is primary constraint and 2 mV offset is acceptable in non-critical threshold detection. |
| TL331IDBVR | Single comparator, lower supply current (60 µA), but only one channel and no SO-8 option (SOT-23-5 only). | Requires two devices for dual-channel function, increasing board area and BOM count. | Choose for ultra-low-power single-threshold applications where space is constrained and dual functionality is not needed. |
Compared with LM393DR and TL331IDBVR, AS393MTR-G1 uniquely combines dual-channel operation, 1.0 mV offset, ground-sensing inputs, and SO-8 packaging-making it optimal for compact, precision power-monitoring designs requiring minimal external components.
Availability
AS393MTR-G1 is available at Aetrix Electronics and suitable for battery chargers, DC-DC modules, and PC motherboards requiring stable component supply, long-term manufacturability, and RoHS/Green compliance.
Supply support for AS393MTR-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The AS393/393A series belongs to Diodes' precision analog comparator product line, engineered specifically for industrial, computing, and communications applications demanding low offset, wide supply range, and reliable single-supply operation.
FAQ
What is the maximum differential input voltage the AS393MTR-G1 can withstand?
The AS393MTR-G1 supports a differential input voltage of up to ±40 V, independent of supply voltage. This rating is absolute maximum and applies even when VCC is unpowered, enabling safe operation during hot-swap or fault conditions in power supply monitoring circuits.
Can AS393MTR-G1 operate with a 3.3 V supply while detecting signals near ground?
Yes. Its input common-mode voltage range includes 0 V and extends to VCC−1.5 V, so at 3.3 V supply, inputs can swing from 0 V to 1.8 V. This makes it ideal for detecting low-level signals in 3.3 V systems without level shifters or negative supplies.
Is the AS393MTR-G1 pin-compatible with legacy industry-standard 393 comparators?
Yes. The AS393MTR-G1 is fully compatible with the industry-standard LM393 pinout and electrical behavior. It uses the same SO-8 footprint and functional assignment, allowing drop-in replacement in existing designs without layout changes.
Does AS393MTR-G1 require external pull-up resistors on its outputs?
Yes. Both outputs are open-collector and require external pull-up resistors to define the HIGH logic state. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and drive strength requirements; 4.7 kΩ is recommended for general-purpose 5 V interfacing.
AS393MTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
AS393MTR-G1 FAQ
1.How can I place an order for AS393MTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS393MTR-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 AS393MTR-G1 reliable?
The price and inventory of AS393MTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS393MTR-G1 is usually 5 days.
3.What payment methods are accepted for AS393MTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS393MTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS393MTR-G1?
AS393MTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS393MTR-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 AS393MTR-G1?
For technical support, including AS393MTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS393MTR-G1 requirements.
6.How does Aetrix verify that AS393MTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS393MTR-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 AS393MTR-G1 meets industry standards.
7.What is the process for return or replacement of AS393MTR-G1?
All AS393MTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS393MTR-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 AS393MTR-G1 part is unused and in its original packaging.
Return procedure for AS393MTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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