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Texas Instruments SN74AHC1G09DBVR
- Part No.:
- SN74AHC1G09DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74AHC1G09DBVR.pdf
- Description:
- IC GATE AND 1CH 2-INP SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,159
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Product details
Overview
SN74AHC1G09 from Texas Instruments is a single 2-input positive-AND gate with open-drain output, performing Y = A × B logic in CMOS technology. It operates from 2 V to 5.5 V, delivers 6 ns propagation delay at 5 V, sinks up to 8 mA, and supports –55°C to +125°C industrial temperature range - used for power-good signal combining and digital enable control in mixed-voltage systems.
For engineers reviewing the SN74AHC1G09 datasheet, SN74AHC1G09 pinout, SN74AHC1G09 application, or SN74AHC1G09 equivalent, key selection factors include its open-drain output architecture, rail-to-rail input voltage tolerance, low ICC (≤10 µA), Schmitt-trigger input noise immunity, and SOT-23-5 package compatibility with high-density PCB layouts.
Technical Context
The SN74AHC1G09 implements a single Boolean AND function with true open-drain output - no internal pull-up - requiring external termination for logic-high assertion. Its inputs are overvoltage-tolerant up to 5.5 V regardless of VCC, enabling level translation between 2 V, 3.3 V, and 5 V domains.
It features Schmitt-trigger inputs for enhanced noise rejection on slow or noisy signals, and its functional mode table confirms active-low output (Y = L when A = L or B = L; high-impedance when A = B = H). Absolute maximum ratings permit VI up to 7 V and VO up to VCC + 0.7 V, supporting robust interface design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 2-input positive-AND (Y = A × B) with open-drain output |
| Supply Voltage Range | 2 V to 5.5 V - enables interoperability across 2.5 V, 3.3 V, and 5 V logic rails |
| Propagation Delay | 6 ns max at VCC = 5 V, CL = 15 pF - suitable for sub-100 MHz timing-critical paths |
| Sink Current | ±8 mA at VCC = 5 V - drives standard TTL loads or external pull-ups up to 625 Ω |
| Input Thresholds | VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V - ensures clean switching with margin against noise |
| Quiescent Current | ICC ≤ 10 µA at TA = –40°C to +85°C - supports ultra-low-power always-on monitoring circuits |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial and automotive under-hood environments |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 1.45 mm max height, gull-wing leads, RoHS-compliant matte tin lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Input | First AND operand; overvoltage-tolerant up to 5.5 V independent of VCC |
| 2 (B) | Input | Second AND operand; Schmitt-trigger input rejects <100 ns/V noise transients |
| 3 (GND) | Ground | Reference return path for all I/O and internal circuitry; must be low-impedance |
| 4 (Y) | Output | Open-drain output; requires external pull-up to define logic-high voltage and sink current path |
| 5 (VCC) | Power | Positive supply rail; bypass capacitor (0.1 µF) required adjacent to pin for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 2 V to 5.5 V operation enables use in multi-rail systems without level shifters |
| Open-drain output | Allows wired-AND bus configurations and voltage-level translation via external pull-up |
| Schmitt-trigger inputs | Provides hysteresis (≈0.3 V typical) to suppress false triggering on slow or noisy inputs |
| Rail-to-rail input tolerance | Inputs accept VI up to 5.5 V even at VCC = 2 V - simplifies interfacing with higher-voltage sensors or logic |
| Low ICC | ≤10 µA max over full temperature range - ideal for battery-backed status monitoring |
Applications
| Power Sequencing Control | Digital Enable Logic |
|---|---|
Use Scenario: Coordinating startup order of multiple DC/DC converters in an MCU-based system where processor reset must occur only after all supplies stabilize. IC Role / Device Role / Timing Role: AND gate combines individual "power good" signals from three regulators; output asserts EN only when all are valid. Use Value: Eliminates need for discrete diode-OR or microcontroller polling - reduces BOM count and firmware overhead while ensuring deterministic sequencing. | Use Scenario: Enabling a peripheral subsystem (e.g., sensor array or display driver) only when both system ready and user permission flags are asserted. IC Role / Device Role / Timing Role: Performs real-time hardware gating of enable signal; open-drain output interfaces directly to 3.3 V or 5 V peripheral enable pin. Use Value: Provides fail-safe hardware interlock independent of software state - prevents accidental activation during boot or fault recovery. |
| Level-Translated Bus Arbitration | Noise-Immune Signal Conditioning |
Use Scenario: Sharing a common interrupt line among devices operating at different supply voltages (e.g., 2.5 V sensor, 3.3 V MCU, 5 V actuator). IC Role / Device Role / Timing Role: Acts as voltage-agnostic wired-AND node; each device pulls Y low via its own open-drain output. Use Value: Enables mixed-voltage interrupt sharing without dedicated level translators - reduces component count and board area. | Use Scenario: Debouncing and cleaning slow-rising signals from mechanical switches or analog comparators before feeding to clock-sensitive logic. IC Role / Device Role / Timing Role: Schmitt-trigger inputs filter noise; AND function validates dual-edge conditions (e.g., both switch and safety interlock closed). Use Value: Replaces RC + buffer solutions with single-chip, temperature-stable hysteresis - improves reliability over wide operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G09DBVR | Lower VCC range (1.65–5.5 V); 3.3 ns tPD at 3.3 V; higher drive (±24 mA) | Better suited for 1.8 V/3.3 V systems; not rated for 2 V minimum operation | Select when faster speed or lower-voltage support is critical and 2 V operation is unnecessary |
| SN74AHC1G08DBVR | Push-pull (not open-drain) output; identical VCC, tPD, and temperature specs | Cannot perform wired-AND or level translation; requires compatible logic family for output loading | Choose only if push-pull drive is required and external pull-up is undesirable or incompatible |
Compared with SN74LVC1G09DBVR, the SN74AHC1G09 offers guaranteed 2 V operation and better noise immunity but slower speed; compared with SN74AHC1G08DBVR, it provides essential open-drain flexibility for bus sharing and voltage translation - making it irreplaceable in mixed-rail coordination tasks.
Availability
SN74AHC1G09 is available at Aetrix Electronics and suitable for power sequencing control, digital enable logic, and level-translated bus arbitration requiring stable component supply across industrial, automotive, and embedded computing applications.
Supply support for SN74AHC1G09 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic ICs, with decades of expertise in high-reliability logic families and industrial-grade packaging.
The SN74AHC1G09 belongs to the AHC logic family - designed for high-speed, low-power, mixed-voltage interface applications where noise immunity, wide supply range, and open-drain flexibility are essential.
FAQ
What is the maximum sink current capability of the SN74AHC1G09 at 5 V?
The SN74AHC1G09 supports a maximum sink current of ±8 mA at VCC = 5 V, measured at VOL ≤ 0.55 V over the full temperature range (–55°C to +125°C). This rating allows direct driving of standard TTL loads or termination of pull-up resistors down to 625 Ω while maintaining valid logic-low levels - critical for reliable wired-AND implementations.
Does the SN74AHC1G09 require external pull-up resistors on its output?
Yes, the SN74AHC1G09 has an open-drain output and requires an external pull-up resistor to define the logic-high voltage level. The value depends on load capacitance and speed requirements; a typical 10 kΩ resistor to 3.3 V or 5 V is used for general-purpose applications, while lower values (e.g., 1 kΩ) may be needed for higher-speed or heavier capacitive loads.
Can the SN74AHC1G09 operate reliably at 2 V supply voltage?
Yes, the SN74AHC1G09 is fully specified to operate from 2 V to 5.5 V. At VCC = 2 V, it maintains valid VIH (1.5 V) and VIL (0.5 V) thresholds, delivers tPD ≤ 8.5 ns (CL = 50 pF), and draws ICC ≤ 20 µA over –55°C to +125°C - making it suitable for low-voltage battery-powered systems where other logic families may not function.
Is the SN74AHC1G09 pin-compatible with other 5-pin SOT-23 logic gates?
The SN74AHC1G09 uses standard SOT-23-5 pinout (A-B-GND-Y-VCC), matching TI's SN74AHC1Gxx series including SN74AHC1G00, SN74AHC1G08, and SN74AHC1G32. However, functional differences (e.g., NAND vs AND vs OR) and output types (push-pull vs open-drain) mean electrical substitution requires verification of logic function and drive requirements - not just pin alignment.
What is the purpose of Schmitt-trigger inputs in the SN74AHC1G09?
The Schmitt-trigger inputs in the SN74AHC1G09 provide built-in hysteresis (~0.3 V typical), enabling robust operation with slow-rising, noisy, or floating signals - such as those from mechanical switches, comparators, or long PCB traces. This eliminates external RC filtering and prevents metastability or multiple toggling during signal transitions, improving system reliability without added components.
SN74AHC1G09DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- AND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Features:
- Open Drain
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- -, 8mA
- Input Logic Level - Low:
- 0.5V ~ 1.65V
- Input Logic Level - High:
- 1.5V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
SN74AHC1G09DBVR FAQ
1.How can I place an order for SN74AHC1G09DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC1G09DBVR 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 SN74AHC1G09DBVR reliable?
The price and inventory of SN74AHC1G09DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC1G09DBVR is usually 5 days.
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SN74AHC1G09DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC1G09DBVR 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 SN74AHC1G09DBVR?
For technical support, including SN74AHC1G09DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC1G09DBVR requirements.
6.How does Aetrix verify that SN74AHC1G09DBVR is sourced from the original manufacturer or authorized distributors?
All SN74AHC1G09DBVR 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 SN74AHC1G09DBVR meets industry standards.
7.What is the process for return or replacement of SN74AHC1G09DBVR?
All SN74AHC1G09DBVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC1G09DBVR, 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 SN74AHC1G09DBVR part is unused and in its original packaging.
Return procedure for SN74AHC1G09DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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