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Diodes Incorporated AS393PT-G1
- Part No.:
- AS393PT-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AS393PT-G1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,434
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Product details
Overview
AS393PT-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 used in battery chargers, DC-DC modules, and PC motherboard voltage monitoring circuits.
For engineers reviewing the AS393PT-G1 datasheet, AS393PT-G1 pinout, AS393PT-G1 application, or AS393PT-G1 equivalent, this page delivers verified electrical parameters, SO-8 package terminal mapping, real-world use cases in power management systems, and validated alternative comparators for design flexibility and supply continuity.
Technical Context
The AS393PT-G1 integrates two independent high-gain comparators with PNP input stages enabling input common-mode voltage down to ground and differential input range equal to full supply voltage. Its open-collector outputs support wired-OR logic and level translation across voltage domains.
Input bias current is 25 nA (typ), offset current ±5.0 nA (typ), and large-signal response time is 200 ns at 5 mV overdrive - optimized for fast threshold detection in switching power supplies and battery protection circuits without requiring external hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V (single) or ±1.0 V to ±18 V (dual): 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 threshold detection in precision battery voltage monitoring and reference comparison. |
| Supply Current | 0.6 mA (typ) at 5 V: supports ultra-low-quiescent-current operation in always-on power supervision circuits. |
| Input Bias Current | 25 nA (typ): minimizes error in high-impedance sensor interface and voltage divider networks. |
| Output Type | Open-collector: allows flexible pull-up to any logic rail (e.g., 1.8 V, 3.3 V, 5 V) and supports wired-OR bus configurations. |
| Response Time | 200 ns (typ) for 5 mV overdrive: suitable for high-speed feedback control in DC-DC converters and overvoltage latch circuits. |
| Saturation Voltage | 200 mV (typ) at 4 mA sink: reduces power loss and improves noise margin in active-low fault signaling paths. |
Pinout & Package
AS393PT-G1 is housed in a RoHS-compliant, halogen-free SO-8 package (JEDEC MS-012AC), with 1.27 mm pitch, 5.0 mm × 4.0 mm body, and matte tin-plated leads solderable per MIL-STD-202 Method 208.
| 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 from 0 V to VCC − 1.5 V (common-mode range includes ground). |
| 3 | Non-inverting Input 1 | Positive input of Comparator 1; same common-mode range as Pin 2; used for reference or signal comparison. |
| 4 | GND | Analog ground reference for both comparators and internal circuitry; must be low-impedance return path. |
| 5 | Non-inverting Input 2 | Positive input of Comparator 2; electrically isolated from Comparator 1; supports independent threshold sensing. |
| 6 | Inverting Input 2 | Negative input of Comparator 2; identical electrical characteristics to Pin 2; enables dual-threshold monitoring. |
| 7 | Output 2 | Open-collector output of Comparator 2; independently controllable; supports redundant or complementary fault signaling. |
| 8 | VCC | Positive supply rail; powers both comparators; supports wide-range operation up to 36 V. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from 2 V to 36 V single supply - eliminates need for dedicated LDOs in multi-rail industrial and automotive subsystems. |
| Ground-Sensing Inputs | Input common-mode range includes 0 V - enables direct monitoring of battery cell voltages or ground-referenced sensor outputs. |
| Low Power Consumption | 0.6 mA supply current at 5 V - extends runtime in battery-powered equipment such as cordless telephones and portable test gear. |
| High Gain & Fast Response | 200 V/mV gain and 200 ns propagation delay - ensures clean, jitter-free digital transitions for reliable system-level fault detection. |
| RoHS/Green Compliance | Totally lead-free, halogen- and antimony-free SO-8 package - meets IEC 61249-2-21 and JEDEC J-STD-020 Level 3 moisture sensitivity requirements. |
Applications
| Battery Charger Monitoring | DC-DC Converter Feedback |
|---|---|
|
Use Scenario: Detecting overvoltage and end-of-charge conditions in Li-ion battery charging circuits using resistor-divider references. IC Role / Device Role / Timing Role: Dual comparator provides independent high- and low-threshold detection for charge enable/disable and safety cutoff functions. Use Value: 1.0 mV offset ensures <±5 mV total error in 4.2 V charge termination, improving cell longevity and safety compliance. |
Use Scenario: Comparing feedback voltage against reference in isolated flyback or buck-boost converters to regulate output voltage. IC Role / Device Role / Timing Role: Comparator 1 monitors output overvoltage; Comparator 2 validates under-voltage lockout during startup. Use Value: 200 ns response enables sub-microsecond fault reaction, preventing MOSFET shoot-through and transformer saturation. |
| PC Motherboard Power Sequencing | Communication Equipment Supervision |
|
Use Scenario: Validating correct ramp-up timing and voltage levels of +3.3 V, +5 V, and +12 V rails before releasing processor reset. IC Role / Device Role / Timing Role: Each comparator independently verifies one rail's presence and stability via window-comparison architecture. Use Value: Open-collector outputs allow direct OR-ing into a shared POWER_GOOD line, simplifying board-level sequencing logic. |
Use Scenario: Monitoring backup battery voltage and main supply integrity in VoIP phones and base stations during AC failure. IC Role / Device Role / Timing Role: Comparator 1 triggers switchover to backup power; Comparator 2 asserts low-battery warning before cutoff. Use Value: 25 nA input bias avoids loading high-value resistive dividers used in long-life backup systems (>5-year shelf life). |
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, 0.8 mA supply current, same SO-8 footprint and open-collector outputs. | Less precise threshold detection; acceptable where ±10 mV tolerance is sufficient (e.g., basic power-good indication). | Select when cost sensitivity outweighs precision requirements and legacy LM393 design reuse is prioritized. |
| TL331IDBVR | Single-channel, SOT-23-5 package, 1.0 mV max offset, 0.4 mA supply current, push-pull output. | Requires two devices for dual functionality; no open-collector flexibility but lower quiescent current and smaller footprint. | Choose for space-constrained designs needing ultra-low IQ and discrete channel control, accepting added BOM count. |
Compared with AS393PT-G1, LM393DR trades precision and power efficiency for broader legacy compatibility, while TL331IDBVR offers superior IQ and miniaturization at the cost of channel count and output topology flexibility - making AS393PT-G1 optimal for dual-threshold, ground-sensing, and wide-supply industrial monitoring.
Availability
AS393PT-G1 is available at Aetrix Electronics and suitable for battery chargers, DC-DC modules, and PC motherboard power supervision requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AS393PT-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, energy-efficient components for industrial, computing, and consumer markets.
The AS393/393A series belongs to Diodes' precision analog comparator product line, engineered specifically for single/dual-supply operation in power management and system supervision applications demanding low offset, wide voltage range, and robust input stage performance.
FAQ
What is the maximum supply voltage rating for AS393PT-G1?
The absolute maximum supply voltage is 40 V, but the recommended operating range is 2 V to 36 V for single-supply operation. Exceeding 36 V may degrade long-term reliability even if within absolute limits, and thermal dissipation must be verified per SO-8 package thermal resistance (108 °C/W junction-to-ambient).
Can AS393PT-G1 drive TTL or CMOS logic directly?
No - its open-collector outputs require external pull-up resistors to interface with TTL or CMOS inputs. A 10 kΩ pull-up to 3.3 V or 5 V is typical; output sink current capability is 16 mA (min), supporting fan-out of up to 20 LS-TTL loads or direct connection to microcontroller GPIO with internal pull-ups disabled.
Does AS393PT-G1 support rail-to-rail input operation?
The input common-mode voltage range extends from ground to VCC − 1.5 V at +25°C, and either input can tolerate voltages up to +36 V regardless of VCC. While not fully rail-to-rail (i.e., does not reach VCC), it does include ground - critical for monitoring battery or sensor signals referenced to system ground.
Is AS393PT-G1 qualified for automotive applications?
No - AS393PT-G1 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AS393Q) with extended temperature range (−40°C to +125°C), PPAP documentation, and IATF 16949 manufacturing certification. For automotive use, contact Diodes directly for qualified alternatives.
AS393PT-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- 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:
- Through Hole
- :
- 8-DIP
AS393PT-G1 FAQ
1.How can I place an order for AS393PT-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS393PT-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 AS393PT-G1 reliable?
The price and inventory of AS393PT-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS393PT-G1 is usually 5 days.
3.What payment methods are accepted for AS393PT-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS393PT-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS393PT-G1?
AS393PT-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS393PT-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 AS393PT-G1?
For technical support, including AS393PT-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS393PT-G1 requirements.
6.How does Aetrix verify that AS393PT-G1 is sourced from the original manufacturer or authorized distributors?
All AS393PT-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 AS393PT-G1 meets industry standards.
7.What is the process for return or replacement of AS393PT-G1?
All AS393PT-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS393PT-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 AS393PT-G1 part is unused and in its original packaging.
Return procedure for AS393PT-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS393PT-G1 Tags
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