My Inquiry
My Account
Texas Instruments 74AHC1G125DCKTE4
- Part No.:
- 74AHC1G125DCKTE4
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1G125DCKTE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,550
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AHC1G125DCKTE4 from Texas Instruments is a single 3-state bus buffer gate with true noninverting logic, operating across 2 V to 5.5 V supply, delivering ≤7 ns propagation delay at 5 V, ±8 mA output drive, and ≤10 µA ICC. It serves as an isolated bidirectional bus interface enabler in compact digital subsystems such as display timing control and sensor data routing.
For engineers reviewing the 74AHC1G125DCKTE4 datasheet, 74AHC1G125DCKTE4 pinout, 74AHC1G125DCKTE4 application, or 74AHC1G125DCKTE4 equivalent, this page delivers verified package mapping (SC-70-5), functional truth table behavior, thermal resistance (RθJA = 289.2 °C/W), ESD ratings (±2000 V CDM), and validated alternative part selection guidance.
Technical Context
The 74AHC1G125DCKTE4 implements a CMOS-based single-channel buffer with active-low 3-state enable (OE), where Y = A when OE = L and Y = high-impedance when OE = H. Its input structure accepts voltages up to 5.5 V regardless of VCC, enabling level translation from higher-voltage logic domains into 3.3 V or 2.5 V systems.
It features balanced rise/fall times (≤20 ns/V at 5 V), low dynamic power consumption (Cpd = 14 pF), and guaranteed operation from –40°C to +125°C. The device avoids bus contention via explicit OE control and requires no external pull-ups for default high-Z state during power sequencing if OE is externally biased.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 5.5 V - supports mixed-voltage system interfacing and brown-out tolerant operation down to 2 V. |
| Max Propagation Delay | 7 ns at VCC = 5 V, CL = 15 pF - ensures sub-10 ns timing margin for 100 MHz bus handshaking. |
| Output Drive Strength | ±8 mA at VCC = 5 V - sufficient to drive 50 pF loads with controlled edge rates, minimizing overshoot. |
| Quiescent Supply Current | 10 µA max - enables use in always-on monitoring nodes without compromising system standby power. |
| Input Voltage Tolerance | Up to 5.5 V independent of VCC - allows safe interfacing with 5 V logic while powered from 3.3 V or lower. |
| ESD Rating (CDM) | ±2000 V - meets JEDEC JESD22-C101 for robust handling in automated SMT assembly lines. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and medical patient monitoring environments. |
Pinout & Package
74AHC1G125DCKTE4 is housed in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 2.1 mm (body: 2.0 mm × 1.25 mm), optimized for space-constrained PCB layouts and compatible with standard 0.65 mm pitch pick-and-place equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low 3-state enable input | Drives Y to high-impedance when high; must be pulled low (or driven) to pass A→Y data path. |
| 2 - A | Buffer input | True logic input accepting 0–5.5 V; no internal pull-up/down; requires external bias if unused. |
| 3 - GND | Ground reference | Primary return path for all internal logic and output current; must be low-inductance connection. |
| 4 - Y | 3-state noninverting output | Drives high/low when OE = L; presents >10⁸ Ω impedance when OE = H - isolates bus segments. |
| 5 - VCC | Power supply | Supplies core logic and output stage; requires local 0.1 µF ceramic bypass capacitor per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 2 V–5.5 V operation enables direct integration into multi-rail systems without level shifters. |
| 5.5 V-tolerant inputs | Accepts 5 V signals even when VCC = 2.5 V or 3.3 V - simplifies down-translation in mixed-voltage I/O domains. |
| Low dynamic power | 14 pF power dissipation capacitance limits switching current, reducing noise coupling in sensitive analog sections. |
| Controlled edge rates | 20 ns/V input transition rate limit suppresses ringing on unterminated traces up to 10 cm in length. |
| High-impedance fail-safe | Outputs enter high-Z state when OE is unconnected or floating high - prevents unintended bus loading during reset. |
Applications
| Display Interface Isolation | Sensor Data Multiplexing |
|---|---|
|
Use Scenario: Isolating LVDS timing signals between FPGA video controller and panel driver IC in portable projectors. IC Role / Device Role / Timing Role: Bidirectional bus buffer enabling/disabling pixel clock and sync signal paths without loading source drivers. Use Value: Prevents signal integrity degradation during hot-plug events and reduces crosstalk between adjacent differential pairs. |
Use Scenario: Routing analog sensor outputs (temperature, pressure) through shared ADC input channels in patient monitoring units. IC Role / Device Role / Timing Role: Single-channel 3-state gate selecting one sensor channel onto common data bus under microcontroller OE control. Use Value: Eliminates need for mechanical relays or larger multiplexers; maintains <10 µA quiescent current during channel idle states. |
| Industrial Motor Control Logic | POS Terminal I/O Expansion |
|
Use Scenario: Interfacing microcontroller GPIOs to isolated gate drivers in AC induction motor inverters. IC Role / Device Role / Timing Role: Level-translating and buffering PWM enable signals while providing fault-isolation via OE-controlled disable. Use Value: Enables safe shutdown of power stage during overcurrent detection by forcing Y to high-Z within <12.5 ns (tPLZ @ 5 V). |
Use Scenario: Expanding parallel GPIO count for barcode scanner, cash drawer, and receipt printer interfaces in electronic point-of-sale terminals. IC Role / Device Role / Timing Role: Low-pin-count buffer adding isolated control lines without increasing MCU pin count or PCB layer count. Use Value: Reduces BOM cost vs. multi-channel alternatives; SC-70 footprint saves >40% board area versus SOIC-8 equivalents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DCKR | Lower VCC range (1.65–5.5 V); higher drive (±24 mA); faster tPD (5.5 ns @ 3.3 V) | Better suited for 1.8 V logic domains and heavier capacitive loads (>50 pF) | Select when driving longer traces or interfacing with legacy 1.8 V FPGAs; verify OE logic polarity compatibility. |
| 74AUP1G125GW,125 | NXP variant; ultra-low power (ICC = 0.9 µA typ); slower tPD (10.5 ns @ 3.3 V); VCC = 0.8–3.6 V only | Optimized for battery-powered IoT sensors and wearables requiring nanowatt standby | Choose for energy-critical designs where propagation delay >10 ns is acceptable and supply is ≤3.3 V. |
Compared with SN74LVC1G125DCKR and 74AUP1G125GW,125, the 74AHC1G125DCKTE4 uniquely balances 2–5.5 V flexibility, 5.5 V-tolerant inputs, and moderate speed/power - making it optimal for industrial and medical systems needing interoperability across legacy and modern logic families.
Availability
74AHC1G125DCKTE4 is available at Aetrix Electronics and suitable for industrial motor control, medical patient monitoring, and electronic point-of-sale terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC1G125DCKTE4 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 solutions, with decades of expertise in high-reliability interface IC design and automotive-grade qualification.
The SN74AHC1G125 product line delivers single-gate 3-state buffers for space- and power-constrained digital interconnects in industrial automation, healthcare instrumentation, and consumer electronics.
FAQ
What is the absolute maximum supply voltage for 74AHC1G125DCKTE4?
The absolute maximum VCC rating for 74AHC1G125DCKTE4 is 7 V, per TI's SCLS377M datasheet Section 5.1. However, recommended operation is limited to 2 V–5.5 V. Exceeding 5.5 V may cause parametric shift or accelerated aging, and operation above 7 V risks permanent damage. Always observe the 5.5 V upper limit in functional designs.
Does 74AHC1G125DCKTE4 support level translation between 5 V and 3.3 V logic domains?
Yes - 74AHC1G125DCKTE4 supports down-translation: its inputs tolerate up to 5.5 V regardless of VCC, so a 5 V signal applied to pin A remains valid even when VCC = 3.3 V or 2.5 V. The output Y swings rail-to-rail within the VCC domain, enabling clean interfacing from higher- to lower-voltage logic without external components.
What is the thermal resistance (RθJA) of 74AHC1G125DCKTE4 in its SC-70 package?
The junction-to-ambient thermal resistance (RθJA) for 74AHC1G125DCKTE4 in the DCK (SC-70) package is 289.2 °C/W, as specified in Section 5.4 of the TI datasheet. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with added copper pour or thermal vias beneath the pad.
Can 74AHC1G125DCKTE4 outputs be safely tied together in a wired-OR configuration?
No - 74AHC1G125DCKTE4 does not support wired-OR. Its outputs are push-pull (totem-pole), not open-drain. Connecting multiple Y outputs risks bus contention and excessive current flow if one drives high while another drives low. Use only one device per net, or implement external OR logic with diodes/resistors if required.
Is 74AHC1G125DCKTE4 pin-compatible with other SC-70 packaged logic gates like SN74AHC1G00 or SN74AHC1G08?
No - while all share the same SC-70-5 footprint, pin assignments differ. 74AHC1G125DCKTE4 uses pin 1 for OE, pin 2 for A, pin 4 for Y. In contrast, SN74AHC1G00 (dual-input NAND) assigns pins 1/2 to inputs and pin 3 to output. Swapping devices without board revision will result in nonfunctional logic behavior.
74AHC1G125DCKTE4 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:
- 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:
- SC-70-5
74AHC1G125DCKTE4 FAQ
1.How can I place an order for 74AHC1G125DCKTE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G125DCKTE4 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 74AHC1G125DCKTE4 reliable?
The price and inventory of 74AHC1G125DCKTE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G125DCKTE4 is usually 5 days.
3.What payment methods are accepted for 74AHC1G125DCKTE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G125DCKTE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G125DCKTE4?
74AHC1G125DCKTE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G125DCKTE4 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 74AHC1G125DCKTE4?
For technical support, including 74AHC1G125DCKTE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G125DCKTE4 requirements.
6.How does Aetrix verify that 74AHC1G125DCKTE4 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G125DCKTE4 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 74AHC1G125DCKTE4 meets industry standards.
7.What is the process for return or replacement of 74AHC1G125DCKTE4?
All 74AHC1G125DCKTE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G125DCKTE4, 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 74AHC1G125DCKTE4 part is unused and in its original packaging.
Return procedure for 74AHC1G125DCKTE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHC1G125DCKTE4 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
