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Diodes Incorporated AS339GTR-E1
- Part No.:
- AS339GTR-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AS339GTR-E1.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,009
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Product details
Overview
AS339GTR-E1 from Diodes Incorporated is a quad low-power, low-offset voltage comparator IC with 2.0 mV typical input offset voltage, open-collector outputs, and operation from single supply (2.0 V to 36 V) or dual supplies (±1.0 V to ±18 V). It delivers 0.9 mA supply current, 25 nA input bias current, and 200 mV output saturation voltage at 4 mA, enabling precision threshold detection in battery-powered and industrial power management systems.
For engineers reviewing the AS339GTR-E1 datasheet, AS339GTR-E1 pinout, AS339GTR-E1 application, or AS339GTR-E1 equivalent, key selection criteria include input common-mode range including ground, differential input voltage equal to supply rail, and compatibility with industry-standard LM339 footprint and function in space-constrained TSSOP-14 layouts.
Technical Context
The AS339GTR-E1 implements four independent high-gain comparators using PNP input stage architecture, supporting rail-to-rail differential input swing up to ±40 V and common-mode input down to ground. Its open-collector outputs allow wired-OR logic and flexible pull-up configuration across varying logic families.
Designed for single-supply operation in portable and embedded systems, it maintains stable performance over −40°C to +85°C with supply current independent of VCC magnitude, and features internal ESD protection and lateral NPN parasitic immunity against negative input transients below −0.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 2.0 V–36 V; dual: ±1.0 V–±18 V - supports wide-input DC-DC feedback and battery monitoring without level-shifting. |
| Input Offset Voltage | 2.0 mV (typ), 5 mV (max) - enables accurate voltage window detection with ≤0.5% error at 400 mV reference. |
| Supply Current | 0.9 mA (typ) at 5 V - allows integration into always-on circuits with sub-1 µA standby when gated. |
| Input Bias Current | 25 nA (typ) - minimizes voltage error across high-impedance sensor dividers (>1 MΩ). |
| Output Saturation Voltage | 200 mV (typ) at 4 mA sink - ensures reliable TTL/CMOS logic low under full load without external buffering. |
| Response Time | 200 ns (5 mV overdrive) - suitable for fast-switching power supply fault detection and pulse-width monitoring. |
| Common-Mode Input Range | 0 V to VCC−1.5 V - permits direct ground-referenced sensing and rail-sensing without attenuators. |
Pinout & Package
TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.1 mm max height, RoHS-compliant lead-free finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN1− | Inverting input of comparator 1 - accepts reference or sensed signal for high-threshold comparison. |
| 2 | IN1+ | Non-inverting input of comparator 1 - connects to monitored node for rising-edge trigger detection. |
| 3 | IN2− | Inverting input of comparator 2 - used for second independent threshold evaluation (e.g., undervoltage lockout). |
| 4 | IN2+ | Non-inverting input of comparator 2 - supports dual-level battery state monitoring with shared VCC. |
| 5 | OUT1 | Open-collector output of comparator 1 - requires external pull-up; interfaces directly with 3.3 V or 5 V logic. |
| 6 | VCC | Positive supply pin - powers all four comparators; decoupling capacitor required within 1 cm. |
| 7 | OUT3 | Open-collector output of comparator 3 - enables three-state logic control or cascaded alarm signaling. |
| 8 | OUT4 | Open-collector output of comparator 4 - supports redundant fault indication or multi-zone thermal cutoff. |
| 9 | IN4+ | Non-inverting input of comparator 4 - configured for overvoltage detection on main rail. |
| 10 | GND | Ground reference - must be low-impedance connection; shares return path with all comparators. |
| 11 | IN4− | Inverting input of comparator 4 - tied to precision voltage divider for adjustable trip point. |
| 12 | IN3+ | Non-inverting input of comparator 3 - used for temperature sensor interface with NTC thermistor network. |
| 13 | IN3− | Inverting input of comparator 3 - provides hysteresis via feedback resistor for noise-immune switching. |
| 14 | OUT2 | Open-collector output of comparator 2 - drives LED indicator or MOSFET gate directly with 16 mA sink capability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail differential input capability | Supports ±40 V differential swing independent of supply - eliminates need for input clamping diodes in high-voltage sensing. |
| Ground-sensing input common-mode range | Operates with inputs at 0 V - enables direct battery terminal monitoring without level-shifting circuitry. |
| Low quiescent current scalability | 0.9 mA total for four channels - reduces system standby power by >60% versus legacy quad comparators. |
| Open-collector output with 16 mA sink rating | Drives LEDs, relays, or logic gates directly - removes need for external driver transistors in discrete BOMs. |
| Lead-free and halogen-free "Green" compliance | TSSOP-14 package meets RoHS 3, JEDEC J-STD-020, and Diodes Inc. green material specifications - qualifies for automotive and medical PCB assembly. |
Applications
| Battery Charger Monitoring | Switching Power Supply Feedback |
|---|---|
Use Scenario: Real-time monitoring of Li-ion cell voltage during CC/CV charging cycle to terminate charge at 4.2 V ±0.025 V. IC Role / Device Role / Timing Role: Quad comparator configures two independent voltage windows (full-charge and overvoltage) plus temperature and current fault detection. Use Value: 2.0 mV offset ensures ≤0.6% voltage error at 4.2 V, eliminating calibration in production test. | Use Scenario: Secondary-side overvoltage protection in isolated flyback converter with optocoupler feedback loop. IC Role / Device Role / Timing Role: Comparator 1 detects output overvoltage; comparator 2 monitors auxiliary winding for primary-side regulation loss. Use Value: 200 ns response time triggers shutdown before output exceeds 120% rated voltage, meeting IEC 62368-1 transient limits. |
| PC Motherboard Voltage Rails | DC-DC Module Sequencing |
Use Scenario: Validating 12 V, 5 V, 3.3 V, and 1.8 V rails during POST sequence before CPU release. IC Role / Device Role / Timing Role: Each comparator independently verifies one rail against precision reference; outputs feed FPGA power-good logic. Use Value: Input common-mode range including ground allows direct connection to rail sense points without resistive dividers. | Use Scenario: Enabling downstream DC-DC converters only after upstream 12 V rail reaches 11.4 V and remains stable for 10 ms. IC Role / Device Role / Timing Role: Comparator 3 provides hysteresis-based delay via RC network; comparator 4 generates clean enable pulse with 50 µs jitter. Use Value: 25 nA input bias current prevents loading of high-impedance sequencing dividers, preserving timing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher 3.5 mV max offset, 1.6 mA supply current, SO-14 only - no TSSOP option. | Not suitable for space-constrained layouts requiring TSSOP-14 footprint. | Select when legacy SO-14 board reuse is required and offset tolerance >3 mV is acceptable. |
| TL331IDBVR | Single-channel, SOT-23-5, 0.8 mV offset - lacks quad integration and open-collector drive strength. | Requires four separate devices and additional routing for quad functionality. | Select only for ultra-low-power single-threshold applications where board area is secondary to current draw. |
Compared with LM339DR and TL331IDBVR, AS339GTR-E1 uniquely combines TSSOP-14 miniaturization, 2.0 mV offset, and quad integration - reducing component count by 75% versus TL331 and enabling 30% smaller layout than LM339-based designs.
Availability
AS339GTR-E1 is available at Aetrix Electronics and suitable for battery charger monitoring, switching power supply feedback, and PC motherboard voltage rail validation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AS339GTR-E1 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 components for power management, signal integrity, and protection applications.
The AS339 series belongs to Diodes' precision analog comparator product line, engineered for industrial and computing applications demanding low offset, wide supply range, and robust ESD immunity in compact packages.
FAQ
Can AS339GTR-E1 operate with a 3.3 V single supply?
Yes. The AS339GTR-E1 supports single-supply operation from 2.0 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 ≤250 mV at 2 mA sink - sufficient for driving 3.3 V CMOS logic with standard pull-up resistors.
Does AS339GTR-E1 require external hysteresis resistors?
Not inherently, but hysteresis is recommended for noisy environments. The device does not integrate internal hysteresis; users implement positive feedback via resistor networks between output and non-inverting input. Typical values range from 100 kΩ to 1 MΩ depending on required threshold separation and source impedance.
What is the maximum sink current per output?
The AS339GTR-E1 guarantees 6.0 mA minimum sink current at 1.5 V output voltage, with typical capability up to 16 mA. Absolute maximum continuous sink is limited by package thermal resistance (TSSOP-14 θJA = 125°C/W); sustained >10 mA requires PCB copper pour and ambient <60°C.
Is AS339GTR-E1 pin-compatible with LM339 in TSSOP-14?
No. LM339 is not offered in TSSOP-14; its standard packages are SO-14 and PDIP-14. AS339GTR-E1 uses TSSOP-14 pinout identical to AS339MTR-E1 and AS339AMTR-E1, which matches LM339 functional pin mapping but differs mechanically from SO-14 footprints - requiring PCB redesign for migration.
AS339GTR-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- 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):
- 2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
AS339GTR-E1 FAQ
1.How can I place an order for AS339GTR-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS339GTR-E1 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 AS339GTR-E1 reliable?
The price and inventory of AS339GTR-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS339GTR-E1 is usually 5 days.
3.What payment methods are accepted for AS339GTR-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS339GTR-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS339GTR-E1?
AS339GTR-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS339GTR-E1 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 AS339GTR-E1?
For technical support, including AS339GTR-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS339GTR-E1 requirements.
6.How does Aetrix verify that AS339GTR-E1 is sourced from the original manufacturer or authorized distributors?
All AS339GTR-E1 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 AS339GTR-E1 meets industry standards.
7.What is the process for return or replacement of AS339GTR-E1?
All AS339GTR-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AS339GTR-E1, 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 AS339GTR-E1 part is unused and in its original packaging.
Return procedure for AS339GTR-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS339GTR-E1 Tags
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