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Texas Instruments SN74AHC1G125DCK3
- Part No.:
- SN74AHC1G125DCK3
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AHC1G125DCK3.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,255
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Product details
Overview
SN74AHC1G125DCK3 from Texas Instruments is a single 3-state bus buffer gate optimized for level translation and low-noise signal routing in space-constrained applications. It operates from 2 V to 5.5 V, delivers ±8 mA output drive at 5 V, achieves 6 ns max propagation delay (tpd), and consumes ≤10 µA ICC - enabling use in portable projectors, patient monitoring interfaces, and point-of-sale terminals where power efficiency and signal integrity are critical.
For engineers reviewing the SN74AHC1G125DCK3 datasheet, SN74AHC1G125DCK3 pinout, SN74AHC1G125DCK3 application, or SN74AHC1G125DCK3 equivalent, this page provides verified functional identity, SC-70-5 package mapping, confirmed 5-pin 3-state logic behavior, thermal and switching specs across –40°C to +85°C, and validated alternative options for bus buffering in mixed-voltage systems.
Technical Context
The SN74AHC1G125DCK3 implements a noninverting CMOS buffer with active-low 3-state control: when OE is low, A passes directly to Y; when OE is high, Y enters high-impedance state. Its input structure accepts voltages up to 5.5 V regardless of VCC, enabling down-translation from 5 V logic to 3.3 V or 2.5 V domains.
Designed for low-ringing operation, it features controlled edge rates (20 ns/V at 5 V) and limited output drive (±8 mA), reducing overshoot/undershoot on lightly loaded PCB traces. The device supports full industrial temperature range (–40°C to +85°C) and meets JEDEC JESD22-A114 (HBM ±1500 V) and JESD22-C101 (CDM ±2000 V) ESD standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports interoperability across 2.5 V, 3.3 V, and 5 V logic domains |
| Max Propagation Delay | 6 ns at VCC = 5 V, CL = 15 pF - ensures timing compliance in sub-100 MHz digital interfaces |
| Output Drive | ±8 mA at VCC = 5 V - sufficient for driving moderate capacitive loads without external buffers |
| ICC (Supply Current) | ≤10 µA max - enables battery-powered operation with negligible quiescent drain |
| Input Voltage Tolerance | Up to 5.5 V independent of VCC - allows safe interfacing with higher-voltage controllers |
| Operating Temperature | –40°C to +85°C - qualified for commercial and industrial ambient environments |
| ESD Rating (HBM) | ±1500 V - exceeds standard IEC 61000-4-2 system-level immunity requirements |
Pinout & Package
SN74AHC1G125DCK3 uses the SC-70 (DCK) 5-pin surface-mount package, measuring 2.00 mm × 2.1 mm (body: 2.0 mm × 1.25 mm), with 0.65 mm pitch and single-row gull-wing leads. This compact footprint supports high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable input | Drives Y into high-Z when high; must be pulled to VCC via resistor during power-up to prevent bus contention |
| 2 - A | Noninverting data input | Accepts logic levels up to 5.5 V regardless of VCC - enables voltage translation |
| 3 - GND | Ground reference | Common return path for all internal circuitry; requires low-inductance connection to PCB ground plane |
| 4 - Y | 3-state buffered output | True replica of A when OE is low; presents >10 MΩ impedance when OE is high |
| 5 - VCC | Positive supply rail | Must be bypassed with 0.1 µF ceramic capacitor placed within 2 mm of pin to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2 V to 5.5 V operation - eliminates need for level shifters in multi-rail systems |
| Input Overvoltage Tolerance | 5.5 V absolute max input - safely interfaces with legacy 5 V microcontrollers while powered from 3.3 V |
| Low Power Consumption | ≤10 µA ICC - reduces thermal load and extends battery life in always-on monitoring devices |
| Controlled Output Slew Rate | 20 ns/V at 5 V - minimizes EMI and signal reflections on unterminated traces |
| High-impedance State Leakage | ±2.5 µA max IOZ - prevents unintended current paths in shared-bus architectures |
Applications
| Projector Interface Logic | Patient Monitoring Signal Routing |
|---|---|
Use Scenario: Isolating HDMI or LVDS video control signals between SoC and display driver ICs in ultra-thin DLP projectors. IC Role / Device Role / Timing Role: 3-state buffer enabling bidirectional bus arbitration and hot-plug detection signaling. Use Value: 6 ns tpd ensures setup/hold timing margins for 72 MHz pixel clocks; SC-70 package saves >40% board area vs. SOIC-8 alternatives. | Use Scenario: Routing sensor data (ECG, SpO₂) from analog front-end to microcontroller ADC in portable medical monitors. IC Role / Device Role / Timing Role: Level-translating buffer isolating 5 V sensor outputs from 3.3 V MCU inputs while suppressing noise-induced glitches. Use Value: ±8 mA drive handles 100 pF trace capacitance; 2 V min VCC supports brown-out operation during battery sag. |
| POS Terminal Peripheral Control | AC Motor Control Logic Interface |
Use Scenario: Managing communication between payment processor, receipt printer, and barcode scanner in compact retail POS systems. IC Role / Device Role / Timing Role: Bus buffer enabling time-multiplexed access to shared UART/I²C lines among peripherals. Use Value: 5.5 V input tolerance accommodates 5 V scanner logic; 10 µA ICC reduces standby power by >95% vs. TTL equivalents. | Use Scenario: Interfacing microcontroller GPIOs to isolated gate drivers in variable-frequency AC induction motor drives. IC Role / Device Role / Timing Role: Signal conditioner providing clean enable/disable pulses to half-bridge drivers under noisy EMI conditions. Use Value: ±1500 V HBM ESD rating withstands field-installation handling; 20 ns/V slew rate limits dv/dt-induced false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DCK3 | Lower VCC range (1.65–5.5 V); 3.5 ns max tpd at 3.3 V; ±24 mA drive | Better suited for high-speed 3.3 V-only systems requiring stronger drive | Select when faster switching or higher fanout is needed; not recommended for 2 V operation |
| 74AHC1G125SE-7 | Same AHC family; SOT-353 (SC-70-5) package; identical electrical specs; Diodes Inc. marking | Drop-in replacement with same footprint, timing, and thermal performance | Preferred for dual-sourcing; verify reel packaging and MSL rating match production requirements |
Compared with SN74AHC1G125DCK3, SN74LVC1G125DCK3 offers higher speed and drive but sacrifices 2 V operation, while 74AHC1G125SE-7 provides identical functionality with second-source availability - making the latter ideal for supply chain resilience without design change.
Availability
SN74AHC1G125DCK3 is available at Aetrix Electronics and suitable for projector interface logic, patient monitoring signal routing, and POS terminal peripheral control requiring stable component supply across commercial and industrial temperature grades.
Supply support for SN74AHC1G125DCK3 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 connectivity technologies, with over 90 years of innovation in precision electronics.
The SN74AHC1G125 series belongs to TI's advanced high-speed CMOS logic portfolio, engineered for low-power, mixed-voltage bus interfacing in portable, medical, and industrial equipment where reliability and small form factor are essential.
FAQ
What is the maximum operating temperature for SN74AHC1G125DCK3?
The SN74AHC1G125DCK3 is rated for operation from –40°C to +85°C. This temperature range is specified in the official TI datasheet (SCLS377M, February 2024 revision) and applies to the DCK package variant. It does not support the extended –40°C to +125°C range offered by some DBV- and DRL-packaged versions of the same family.
Does SN74AHC1G125DCK3 support 5 V tolerant inputs when powered from 3.3 V?
Yes, SN74AHC1G125DCK3 supports input voltages up to 5.5 V regardless of VCC level. When powered from 3.3 V, its inputs remain fully 5 V tolerant - a key feature enabling down-translation from legacy 5 V controllers to modern low-voltage MCUs without external level shifters.
What is the recommended bypass capacitor for SN74AHC1G125DCK3?
Texas Instruments recommends a 0.1 µF ceramic capacitor placed as close as possible to the VCC pin (Pin 5) of SN74AHC1G125DCK3. This minimizes high-frequency supply noise and ensures stable switching performance, especially during output transitions that draw transient current.
Can SN74AHC1G125DCK3 drive a 50 pF load within timing specifications?
Yes, SN74AHC1G125DCK3 maintains guaranteed timing with 50 pF loads: at VCC = 5 V, tPLH/tPHL is 5.3–9.5 ns and tPZH/tPZL is 5.1–9 ns (–40°C to +85°C). These values are explicitly published in Section 5.7 of the TI datasheet and confirm reliable operation into typical PCB trace + connector capacitance.
Is SN74AHC1G125DCK3 pin-compatible with SN74LVC1G125DCK3?
Yes, SN74AHC1G125DCK3 and SN74LVC1G125DCK3 share identical SC-70-5 (DCK) package dimensions, pinout, and terminal functions. However, they differ electrically: LVC has lower VCC minimum (1.65 V), faster propagation, and higher drive - so direct substitution requires validation of voltage and timing margins in the target application.
SN74AHC1G125DCK3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AHC1G125DCK3 FAQ
1.How can I place an order for SN74AHC1G125DCK3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC1G125DCK3 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 SN74AHC1G125DCK3 reliable?
The price and inventory of SN74AHC1G125DCK3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC1G125DCK3 is usually 5 days.
3.What payment methods are accepted for SN74AHC1G125DCK3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHC1G125DCK3 transactions.
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4.How is shipping managed for SN74AHC1G125DCK3?
SN74AHC1G125DCK3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC1G125DCK3 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 SN74AHC1G125DCK3?
For technical support, including SN74AHC1G125DCK3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC1G125DCK3 requirements.
6.How does Aetrix verify that SN74AHC1G125DCK3 is sourced from the original manufacturer or authorized distributors?
All SN74AHC1G125DCK3 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 SN74AHC1G125DCK3 meets industry standards.
7.What is the process for return or replacement of SN74AHC1G125DCK3?
All SN74AHC1G125DCK3 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC1G125DCK3, 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 SN74AHC1G125DCK3 part is unused and in its original packaging.
Return procedure for SN74AHC1G125DCK3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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