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Diodes Incorporated AS393GTR-G1
- Part No.:
- AS393GTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AS393GTR-G1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,584
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Product details
Overview
AS393GTR-G1 from Diodes Incorporated is a dual precision voltage comparator 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 dual supplies up 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 are required.
For engineers reviewing the AS393GTR-G1 datasheet, AS393GTR-G1 pinout, AS393GTR-G1 application, or AS393GTR-G1 equivalent, this page delivers verified package mapping (SO-8), confirmed electrical parameters (offset voltage, bias current, response time), functional role in level detection and window comparison circuits, and validated drop-in alternatives for industrial power management designs.
Technical Context
The AS393GTR-G1 integrates two independent high-gain comparators with PNP input stages enabling input common-mode voltage range extending to ground and up to VCC−1.5 V. Its differential input voltage rating matches the full supply range (±40 V), supporting robust overvoltage tolerance.
Each comparator features open-collector output with 16 mA sink capability and 200 mV saturation voltage at 4 mA load, enabling direct interface with TTL/CMOS logic or external pull-up networks. Thermal resistance is 108 °C/W (junction-to-ambient, SO-8), supporting operation from −40 °C to +85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1.0 mV typical - enables accurate threshold detection in low-voltage sensing (e.g., battery voltage monitoring down to 200 mV windows) |
| Supply Current | 0.6 mA typical - supports always-on monitoring in energy-constrained systems without compromising response speed |
| Input Bias Current | 25 nA typical - minimizes loading error on high-impedance sensor sources (e.g., thermistor dividers, photodiode amplifiers) |
| Response Time | 200 ns typical - ensures fast edge detection in switching power supply feedback loops and overvoltage protection triggers |
| Output Sink Current | 16 mA maximum - drives LEDs, relays, or logic gates directly without external buffer transistors |
| Common-Mode Range | 0 V to VCC−1.5 V - allows ground-referenced input signals in single-supply systems (e.g., 3.3 V or 5 V rails) |
| Differential Input Range | ±40 V - accommodates input overvoltage events beyond supply rails without damage or latch-up |
Pinout & Package
AS393GTR-G1 is housed in an SO-8 package (JEDEC MS-012AC, 3.9 mm × 4.9 mm body, 1.27 mm pitch), RoHS-compliant and halogen-free ("Green" designation G1). 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 for logic-high assertion |
| 2 | Inverting Input 1 | Negative input of Comparator 1 - accepts reference or sensed signal for threshold comparison |
| 3 | Non-Inverting Input 1 | Positive input of Comparator 1 - used for signal monitoring or hysteresis feedback |
| 4 | GND | Analog ground reference - must be low-impedance return path for both comparators and output loads |
| 5 | Non-Inverting Input 2 | Positive input of Comparator 2 - enables dual-threshold or window detection configurations |
| 6 | Inverting Input 2 | Negative input of Comparator 2 - paired with Pin 5 for independent second comparison channel |
| 7 | Output 2 | Open-collector output of Comparator 2 - electrically isolated from Output 1 for independent control paths |
| 8 | VCC | Positive supply rail - powers both comparators; supports 2 V–36 V single or ±1.0 V–±18 V dual supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | 2 V to 36 V range eliminates need for negative rail in portable and industrial power monitors |
| Ground-sensing inputs | Input common-mode includes 0 V - enables direct connection to shunt resistors or battery terminals without level-shifting |
| Low offset drift | 7 mV max over −40 °C to +85 °C - maintains accuracy across automotive and industrial temperature ranges |
| High ESD tolerance | Human Body Model (HBM) ≥2 kV - improves board-level reliability during handling and assembly |
| Lead-free & Green packaging | SO-8 with matte tin plating, <900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance mandates |
Applications
| Battery Charger Monitoring | DC-DC Converter Feedback |
|---|---|
|
Use Scenario: Detecting end-of-charge voltage thresholds and overvoltage faults in Li-ion charger circuits. IC Role / Device Role / Timing Role: Dual comparator implements precise upper/lower voltage window detection with hysteresis. Use Value: 1.0 mV offset ensures ±5 mV window accuracy at 4.2 V, reducing false trip risk during thermal drift. |
Use Scenario: Providing fast overvoltage protection (OVP) and undervoltage lockout (UVLO) in buck converter control loops. IC Role / Device Role / Timing Role: Comparator 1 monitors output voltage against reference; Comparator 2 validates input rail stability. Use Value: 200 ns response time enables shutdown within 1 µs of fault onset, preventing MOSFET avalanche failure. |
| PC Motherboard Power Sequencing | Cordless Telephone Battery Management |
|
Use Scenario: Validating 12 V, 5 V, and 3.3 V rail presence before enabling downstream logic and memory controllers. IC Role / Device Role / Timing Role: Each comparator independently verifies one rail using resistor-divider inputs referenced to GND. Use Value: Input common-mode range including ground allows direct connection to rail dividers without op-amp buffers. |
Use Scenario: Monitoring NiMH battery pack voltage during charge/discharge cycles in DECT handsets. IC Role / Device Role / Timing Role: One comparator detects full-charge cutoff (ΔV/dt zero-crossing); the other checks discharge termination voltage. Use Value: 25 nA input bias current prevents significant divider current error in high-R sensing networks (e.g., 1 MΩ top/bottom). |
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 typical offset, 1.0 mA supply current, same SO-8 footprint | Lacks guaranteed ground-sensing at low VCC; not specified for <2.7 V operation | Select when cost sensitivity outweighs precision requirements and supply stays >3 V |
| TL331IDBVR | Single-channel, 1.5 mV offset, 0.06 mA supply current, SOT-23-5 package | Requires two units for dual functionality; smaller footprint but higher BOM count | Choose for space-constrained designs where ultra-low quiescent current dominates layout priority |
Compared with LM393DR and TL331IDBVR, AS393GTR-G1 delivers superior offset voltage performance and true ground-sensing capability in a dual-channel SO-8 package-making it optimal for precision battery monitoring and multi-rail sequencing where accuracy and integration reduce component count and PCB area.
Availability
AS393GTR-G1 is available at Aetrix Electronics and suitable for battery chargers, DC-DC modules, and PC motherboards requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AS393GTR-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 series belongs to Diodes' precision analog comparator product line, engineered specifically for single-supply, low-power, ground-referenced voltage monitoring in power conversion and system supervision applications.
FAQ
Can AS393GTR-G1 operate from a 3.3 V single supply?
Yes. The AS393GTR-G1 supports single-supply operation from 2 V to 36 V, including 3.3 V. At 3.3 V, input common-mode range extends from 0 V to 1.8 V, and output saturation remains below 200 mV at 4 mA load-enabling reliable interfacing with 3.3 V logic families via appropriate pull-up resistors.
Does AS393GTR-G1 require external hysteresis components?
Yes. The device has no internal hysteresis. External positive feedback (e.g., resistor from output to non-inverting input) must be added to prevent oscillation near threshold crossings. Typical values range from 100 kΩ to 1 MΩ depending on desired hysteresis width and source impedance.
Is AS393GTR-G1 qualified for automotive applications?
No. AS393GTR-G1 is not AEC-Q100 qualified. Diodes offers the AS393Q variant (with "Q" suffix) for automotive use-featuring extended temperature range (−40 °C to +125 °C), PPAP documentation, and IATF 16949 manufacturing. This part is intended for industrial and commercial applications only.
What is the maximum capacitive load the AS393GTR-G1 outputs can drive?
The open-collector outputs are rated for continuous 16 mA sink current but do not specify capacitive load limits. For stable operation with >100 pF loads (e.g., long PCB traces or logic inputs), a series resistor (22 Ω–100 Ω) between output and load is recommended to damp ringing and prevent overshoot during fast transitions.
AS393GTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-TSSOP
AS393GTR-G1 FAQ
1.How can I place an order for AS393GTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS393GTR-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 AS393GTR-G1 reliable?
The price and inventory of AS393GTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS393GTR-G1 is usually 5 days.
3.What payment methods are accepted for AS393GTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS393GTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS393GTR-G1?
AS393GTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS393GTR-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 AS393GTR-G1?
For technical support, including AS393GTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS393GTR-G1 requirements.
6.How does Aetrix verify that AS393GTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS393GTR-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 AS393GTR-G1 meets industry standards.
7.What is the process for return or replacement of AS393GTR-G1?
All AS393GTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS393GTR-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 AS393GTR-G1 part is unused and in its original packaging.
Return procedure for AS393GTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS393GTR-G1 Tags
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