My Inquiry
My Account
onsemi 74HC125DTR2G
- Part No.:
- 74HC125DTR2G
- Manufacturer:
- onsemi
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC125DTR2G.pdf
- Description:
- IC BUFFER NON-INVERT 6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,235
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HC125DTR2G from onsemi is a quad 3-state noninverting buffer IC in TSSOP-14 package, operating from 2.0 V to 6.0 V, with ±35 mA output drive per channel, active-low independent output enables, and 15 LSTTL load drive capability. It serves as a bus-oriented interface for memory address drivers, clock distribution, and data bus isolation in industrial control and embedded systems.
For engineers reviewing the 74HC125DTR2G datasheet, pinout, applications, or equivalent options, key selection factors include its per-channel active-low OE control, guaranteed 15 ns propagation delay at 6.0 V, 3-state leakage <10 µA, and Pb-free TSSOP-14 packaging compliant with JEDEC Std. 7A.
Technical Context
The 74HC125DTR2G implements four independent CMOS noninverting buffers, each with dedicated active-low 3-state output enable (OE1–OE4). Its logic diagram confirms direct input-to-output signal path when OE is low, and high-impedance output when OE is high - no internal inversion or latching.
Designed for bus interfacing, it supports mixed-voltage system compatibility: inputs accept standard CMOS and LSTTL levels (with pullups), outputs drive CMOS, NMOS, and TTL loads directly, and all DC/AC specs are fully characterized across –55°C to +125°C and 2.0–6.0 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports single-supply operation across legacy 3.3 V and 5 V systems without level shifters. |
| Max Propagation Delay (A→Y) | 15 ns at VCC = 6.0 V - ensures timing-critical bus buffering with predictable setup/hold margins. |
| Output Drive Strength | ±35 mA per pin - drives up to 15 LSTTL loads or fan-out into moderate-capacitance PCB traces. |
| 3-State Leakage Current | ±10 µA at 125°C - maintains bus integrity during high-impedance state even under worst-case thermal stress. |
| Input Capacitance | 10 pF max - minimizes capacitive loading on upstream drivers and preserves signal edge rates. |
| ESD Rating | HBM 2000 V - provides robust handling margin during board assembly and field service. |
Pinout & Package
TSSOP-14 package (Case 948G), 5.0 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, Pb-free, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Input A1–A4 | Noninverting data inputs; CMOS-compatible thresholds ensure noise-immune logic recognition. |
| 2, 5, 11, 14 | Output Enable OE1–OE4 | Active-low enables - each independently controls 3-state output of corresponding buffer. |
| 3, 6, 12, 9 | Output Y1–Y4 | Buffered noninverted outputs; high-impedance when OE = high, driven low/high when OE = low. |
| 7 | GND | Ground reference for all I/O and internal circuitry; must be low-impedance connection. |
| 14 | VCC | Positive supply rail; decoupling capacitor required within 1 cm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Independent 3-state control | Four separate active-low OE pins allow selective bus segment isolation without affecting other channels. |
| Wide supply voltage range | 2.0–6.0 V operation enables drop-in use in both 3.3 V and 5 V legacy systems without redesign. |
| High noise immunity | CMOS input structure with >40% VCC noise margin ensures reliable operation in electrically noisy industrial environments. |
| Pb-free and RoHS-compliant | TSSOP-14 package meets global environmental compliance requirements for commercial and industrial shipments. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module Bus Isolation |
|---|---|
Use Scenario: Isolating microcontroller GPIOs from noisy 24 V I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting buffer with per-channel 3-state control acts as bidirectional bus driver and directionless signal conditioner. Use Value: Prevents back-driving between mismatched voltage domains while maintaining sub-20 ns signal integrity across 15 cm backplane traces. | Use Scenario: Enabling/disabling CAN transceiver clock signals and sensor data lines in body control units during sleep/wake transitions. IC Role / Device Role / Timing Role: Quad buffer provides independent gating of four low-speed control signals with zero static current in disabled state. Use Value: Reduces system standby power by >120 µA per enabled channel via precise OE-controlled 3-state shutdown. |
| Medical Diagnostic Equipment Data Bus | Test & Measurement Instrument Signal Routing |
Use Scenario: Buffering ADC sample clocks and digital trigger lines between FPGA and analog front-end modules in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-jitter, noninverting repeater with matched propagation delays across all four channels. Use Value: Maintains <1 ns inter-channel skew at 6.0 V supply, preserving time-of-flight measurement accuracy in echo processing pipelines. | Use Scenario: Switching between multiple DUT interfaces on automated test equipment using shared GPIB or LXI control buses. IC Role / Device Role / Timing Role: Logic-level translator and bus isolator enabling dynamic reconfiguration of instrument I/O paths. Use Value: Eliminates need for discrete MOSFET switches by providing clean, fast, and latch-up-free 3-state switching with <100 ns enable/disable latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC125PW | TSSOP-14 package, identical pinout and AC/DC specs; TI characterization includes extended temperature validation to +150°C. | Preferred for automotive under-hood applications requiring AEC-Q100 Grade 1 qualification support. | Select SN74HC125PW only if AEC-Q100 documentation and higher-temperature validation are mandatory. |
| 74HCT125D,118 | 74HCT variant - TTL-compatible inputs (VIH = 2.0 V min), same 3-state architecture and SOIC/TSSOP packages. | Better suited for mixed 5 V TTL/CMOS systems where upstream drivers lack full CMOS voltage swing. | Choose 74HCT125D,118 when interfacing with legacy 74LS or 74F logic families without pull-up resistors. |
Compared with SN74HC125PW and 74HCT125D,118, the 74HC125DTR2G offers optimal balance of industrial temperature range (–55°C to +125°C), Pb-free compliance, and cost-effective TSSOP packaging - ideal for volume production in non-automotive embedded systems where strict TTL input compatibility is not required.
Availability
74HC125DTR2G is available at Aetrix Electronics and suitable for industrial PLC backplanes, medical diagnostic equipment data buses, and test & measurement instrument signal routing requiring stable component supply and long-term manufacturability.
Supply support for 74HC125DTR2G 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
onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensors, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The 74HC125DTR2G belongs to onsemi's high-speed CMOS logic family, designed specifically for robust, low-power bus interfacing in harsh-environment embedded systems requiring wide voltage operation and high noise immunity.
FAQ
What is the maximum operating temperature range for the 74HC125DTR2G?
The 74HC125DTR2G is rated for continuous operation from –55°C to +125°C across all supply voltages (2.0 V to 6.0 V). This full industrial temperature range is validated per the onsemi datasheet and applies to both DC and AC electrical characteristics, making the 74HC125DTR2G suitable for deployment in uncontrolled ambient environments such as factory floors and outdoor enclosures.
Does the 74HC125DTR2G support 3.3 V logic systems?
Yes, the 74HC125DTR2G operates reliably at 3.3 V supply (VCC = 3.3 V), with guaranteed VIH = 2.1 V and VIL = 0.9 V - fully compatible with standard 3.3 V CMOS logic families. Its output VOH ≥ 3.17 V and VOL ≤ 0.26 V at 3.3 V/6 mA load meet 3.3 V LVTTL and LVCMOS interface requirements without level translation.
How many independent 3-state enables does the 74HC125DTR2G have?
The 74HC125DTR2G has four independent active-low output enable inputs (OE1 through OE4), one for each of its four noninverting buffers. This allows selective 3-state control of individual outputs - critical for dynamic bus arbitration, multi-drop signal routing, and partial subsystem power gating in complex embedded designs using the 74HC125DTR2G.
Is the 74HC125DTR2G pin-compatible with the 74LS125?
Yes, the 74HC125DTR2G is explicitly designed to be pinout-compatible with the 74LS125, as confirmed in the onsemi datasheet: "The 74HC125 is identical in pinout to the LS125." This enables direct replacement in legacy 74LS-based designs, provided supply voltage and speed requirements are verified - the 74HC125DTR2G delivers faster propagation and lower power than the bipolar LS version.
What is the typical power dissipation of the 74HC125DTR2G at 5 V and 1 MHz?
At VCC = 5.0 V and f = 1 MHz with CL = 50 pF, the 74HC125DTR2G dissipates approximately 1.5 mW per buffer (6 mW total), calculated using CPD = 30 pF and PD = CPD × VCC² × f + ICC × VCC. Quiescent ICC is ≤40 µA, so dynamic switching dominates - this ultra-low power makes the 74HC125DTR2G well-suited for battery-backed and energy-sensitive applications.
74HC125DTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HC125DTR2G FAQ
1.How can I place an order for 74HC125DTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC125DTR2G 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 74HC125DTR2G reliable?
The price and inventory of 74HC125DTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC125DTR2G is usually 5 days.
3.What payment methods are accepted for 74HC125DTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC125DTR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC125DTR2G?
74HC125DTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC125DTR2G 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 74HC125DTR2G?
For technical support, including 74HC125DTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC125DTR2G requirements.
6.How does Aetrix verify that 74HC125DTR2G is sourced from the original manufacturer or authorized distributors?
All 74HC125DTR2G 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 74HC125DTR2G meets industry standards.
7.What is the process for return or replacement of 74HC125DTR2G?
All 74HC125DTR2G units undergo pre-shipment inspection (PSI). If there is an issue with 74HC125DTR2G, 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 74HC125DTR2G part is unused and in its original packaging.
Return procedure for 74HC125DTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC125DTR2G 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
