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Texas Instruments 74AHC1G125DBVRE4
- Part No.:
- 74AHC1G125DBVRE4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74AHC1G125DBVRE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,051
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Product details
Overview
74AHC1G125DBVRE4 from Texas Instruments is a single 3-state bus buffer gate in SOT-23-5 package, operating from 2 V to 5.5 V with 6 ns max propagation delay at 5 V, ±8 mA output drive, and 10 µA max supply current. It functions as a unidirectional level-translating line driver in digital interface paths, enabling bus isolation in compact embedded control systems.
For engineers reviewing the 74AHC1G125DBVRE4 datasheet, 74AHC1G125DBVRE4 pinout, 74AHC1G125DBVRE4 application, or 74AHC1G125DBVRE4 equivalent, key selection criteria include its 3-state enable control timing (tPZH/tPHZ), low ICC power consumption, wide VCC range for mixed-voltage interfacing, and verified operation across –40°C to +125°C industrial temperature range.
Technical Context
The 74AHC1G125DBVRE4 implements a noninverting CMOS buffer with active-low 3-state output enable (OE). Its logic function is defined by Table 7-1: when OE = L, Y = A; when OE = H, Y = high-impedance. Input voltage tolerance extends to 5.5 V regardless of VCC, supporting down-translation from higher-voltage logic domains.
Switching performance is characterized at two load conditions (CL = 15 pF and 50 pF) and two supply rails (3.3 V ± 0.3 V and 5 V ± 0.5 V). Propagation delays (tPLH/tPHL) and 3-state transition times (tPZH/tPHZ/tPZL/tPLZ) are fully specified across –40°C to +125°C, with thermal metrics (RθJA = 278°C/W) validated for DBV package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports interoperability between 2.5 V, 3.3 V, and 5 V logic domains without level shifters |
| Max tPD @ 5 V | 6 ns - ensures sub-10 ns signal path latency in high-speed control loops and data routing |
| Output Drive | ±8 mA @ 5 V - sufficient to drive 50 pF loads with controlled edge rates, minimizing ringing on PCB traces |
| ICC Max | 10 µA - enables ultra-low static power in battery-backed or always-on monitoring subsystems |
| Input Voltage Tolerance | Up to 5.5 V independent of VCC - allows safe interfacing with 5 V inputs while powered from 3.3 V or lower |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and medical equipment environments |
| ESD Rating | ±1500 V HBM - meets standard handling requirements for automated assembly and field service |
Pinout & Package
SOT-23-5 (DBV) package: 2.8 mm × 2.8 mm footprint, 2.9 mm × 1.6 mm body, 0.6 mm max height, JEDEC MO-178 compliant. RoHS-compliant, NIPDAU lead finish, MSL Level-1 (260°C, unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low 3-state enable input | Pulling high disables output (Y = Z); pulling low enables true-pass-through (Y = A); tie to VCC via pullup for power-up high-Z safety |
| 2 - A | Buffer input | Accepts 0–5.5 V logic signals; compatible with TTL and CMOS families across full VCC range |
| 3 - GND | Ground reference | Must be connected directly to system ground plane; shared return for all internal logic and output stages |
| 4 - Y | 3-state buffered output | Drives bidirectional bus lines only when OE = L; presents >10⁹ Ω impedance when disabled |
| 5 - VCC | Power supply | Supplies core logic and output stage; requires local 0.1 µF ceramic bypass capacitor placed ≤2 mm from pin |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2 V–5.5 V operation enables single-buffer use across multiple voltage domains without external regulators |
| Input Overvoltage Tolerance | 5.5 V absolute max input voltage regardless of VCC - eliminates need for external clamping diodes in mixed-supply systems |
| Low Dynamic Power | 14 pF typical power dissipation capacitance - reduces switching current and EMI in high-frequency clock/data distribution |
| Controlled Edge Rates | Δt/Δv = 20 ns/V @ 5 V - limits slew-induced overshoot/undershoot on unterminated traces up to 10 cm |
| Industrial Temp Grade | –40°C to +125°C guaranteed operation - supports deployment in motor control enclosures and medical diagnostics hardware |
Applications
| Projector Video Interface | Industrial Motor Control |
|---|---|
Use Scenario: Isolating HDMI or LVDS video data lanes between FPGA video processor and display timing controller during hot-plug detection. IC Role / Device Role / Timing Role: Unidirectional 3-state buffer enabling/disabling pixel clock and data paths under firmware control. Use Value: Prevents bus contention during mode switching; 6 ns tPD maintains <1% jitter contribution in 100 MHz pixel clocks. | Use Scenario: Driving isolated gate-driver enable signals in multi-phase AC induction motor inverters with centralized MCU supervision. IC Role / Device Role / Timing Role: Level-translating buffer converting 3.3 V MCU GPIO to 5 V-compatible enable inputs for IGBT drivers. Use Value: 5.5 V-tolerant inputs eliminate level-shifter ICs; ±8 mA drive ensures fast turn-on of capacitive enable pins. |
| Patient Monitoring Front-End | Electronic Point-of-Sale Terminal |
Use Scenario: Multiplexing analog sensor readings (ECG, SpO₂) onto shared ADC input channel using digital control lines. IC Role / Device Role / Timing Role: Bus isolator enabling sequential connection of sensor signal chains to common analog front-end. Use Value: 10 µA max ICC minimizes standby current in battery-powered portable units; high-Z state prevents loading of inactive sensor outputs. | Use Scenario: Managing communication handshaking between ARM-based payment processor and legacy 5 V peripheral modules (receipt printer, cash drawer). IC Role / Device Role / Timing Role: Bidirectional bus buffer with OE-controlled directionality for RS-232/UART control lines. Use Value: 2 V–5.5 V VCC range allows direct 3.3 V MCU interfacing to 5 V peripherals; 125°C rating supports enclosed kiosk thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHC1G125DCKRE4 | SC-70-5 package (2.0 mm × 2.1 mm); RθJA = 289.2°C/W; identical electrical specs | Higher thermal resistance limits continuous output current in high-density layouts | Select for space-constrained designs where 0.8 mm² footprint reduction outweighs thermal derating needs |
| SN74AHC1G125DRLR | SOT-553-5 package (1.6 mm × 1.6 mm); RθJA = 328.7°C/W; same logic and timing | Smallest footprint but highest thermal resistance - unsuitable for sustained >4 mA output loads | Choose only for ultra-miniaturized consumer electronics with intermittent signal buffering duty cycles |
Compared with SN74AHC1G125DCKRE4 and SN74AHC1G125DRLR, the 74AHC1G125DBVRE4 offers the best thermal performance (RθJA = 278°C/W) and proven reliability in industrial motor control and medical applications requiring continuous 8 mA drive capability.
Availability
74AHC1G125DBVRE4 is available at Aetrix Electronics and suitable for industrial motor control, patient monitoring systems, and electronic point-of-sale terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC1G125DBVRE4 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision logic, power management, and signal chain technologies.
The SN74AHC1G125 product line delivers single-gate 3-state buffers optimized for low-power, mixed-voltage digital interfacing in space- and energy-constrained industrial, medical, and consumer systems.
FAQ
What is the maximum recommended output current per pin for the 74AHC1G125DBVRE4?
The 74AHC1G125DBVRE4 supports ±25 mA continuous output current per pin (absolute maximum), but TI specifies ±8 mA as the rated drive level at 5 V with guaranteed timing. Exceeding ±8 mA may increase propagation delay variation and reduce noise margin; sustained operation above ±8 mA requires thermal derating per RθJA = 278°C/W.
Does the 74AHC1G125DBVRE4 require external pull-up resistors on the OE pin?
Yes - to ensure high-impedance state during power-up/power-down, the OE pin of the 74AHC1G125DBVRE4 must be tied to VCC via an external pull-up resistor. TI recommends minimum resistance based on driver sink capability; typical values range from 10 kΩ to 100 kΩ depending on system noise immunity requirements and rise-time constraints.
Can the 74AHC1G125DBVRE4 interface a 5 V microcontroller with a 3.3 V FPGA?
Yes - the 74AHC1G125DBVRE4 accepts input voltages up to 5.5 V regardless of VCC, enabling direct connection of 5 V MCU outputs to its A pin while powered from 3.3 V. Its output swings rail-to-rail (0 V to 3.3 V), making it compatible with 3.3 V FPGA inputs without additional level translation.
What is the thermal resistance (RθJA) of the 74AHC1G125DBVRE4 in its SOT-23 package?
The 74AHC1G125DBVRE4 in DBV (SOT-23-5) package has a junction-to-ambient thermal resistance (RθJA) of 278°C/W, measured on a standard 2-layer JEDEC test board. This value assumes proper PCB copper pour and thermal vias; actual performance improves with ≥1 in² of 1-oz copper connected to GND and VCC pins.
Is the 74AHC1G125DBVRE4 suitable for automotive applications?
No - the 74AHC1G125DBVRE4 is not AEC-Q100 qualified. For automotive use, TI offers the pin-compatible SN74AHC1G125-Q1, which undergoes extended temperature stress testing (–40°C to +125°C), enhanced ESD robustness, and failure analysis per automotive quality standards.
74AHC1G125DBVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
74AHC1G125DBVRE4 FAQ
1.How can I place an order for 74AHC1G125DBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G125DBVRE4 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 74AHC1G125DBVRE4 reliable?
The price and inventory of 74AHC1G125DBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G125DBVRE4 is usually 5 days.
3.What payment methods are accepted for 74AHC1G125DBVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G125DBVRE4 transactions.
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4.How is shipping managed for 74AHC1G125DBVRE4?
74AHC1G125DBVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G125DBVRE4 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 74AHC1G125DBVRE4?
For technical support, including 74AHC1G125DBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G125DBVRE4 requirements.
6.How does Aetrix verify that 74AHC1G125DBVRE4 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G125DBVRE4 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 74AHC1G125DBVRE4 meets industry standards.
7.What is the process for return or replacement of 74AHC1G125DBVRE4?
All 74AHC1G125DBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G125DBVRE4, 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 74AHC1G125DBVRE4 part is unused and in its original packaging.
Return procedure for 74AHC1G125DBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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