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Nexperia USA Inc. 74HC125D,653
- Part No.:
- 74HC125D,653
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC125D,653.pdf
- Description:
- IC BUFFER NON-INVERT 6V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,941
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Product details
Overview
74HC125D,653 from Nexperia is a quad 3-state buffer/line driver IC used for bus isolation and signal routing in digital logic systems. It features four independent non-inverting buffers, each with active-low output enable (nOE), operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and delivers typical propagation delay of 9 ns at VCC = 6.0 V with CL = 50 pF.
For engineers reviewing the 74HC125D,653 datasheet, 74HC125D,653 pinout, 74HC125D,653 application, or 74HC125D,653 equivalent, key selection criteria include 3-state output timing (ten/tdis ≤ 32 ns), CMOS input compatibility, SO14 package thermal derating (10.1 mW/K above 100 °C), and static drive capability (±7.8 mA at VCC = 4.5 V).
Technical Context
This device implements four independent non-inverting buffer stages, each controlled by a dedicated active-low output enable input (1OE–4OE). All inputs feature clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used.
Logic operation follows standard TTL- or CMOS-level compatibility depending on variant: 74HC125 uses CMOS input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), while 74HCT125 accepts TTL-compatible inputs (VIH ≥ 2.0 V). Output states are HIGH, LOW, or high-impedance OFF per function table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic domains without level translation. |
| Propagation Delay (tpd) | 9 ns (typ) at VCC = 6.0 V, CL = 50 pF - Supports >20 MHz bus operation with margin for setup/hold timing. |
| Output Drive Strength | ±7.8 mA at VCC = 4.5 V - Sufficient to drive 10 LSTTL loads or 15–20 CMOS inputs under worst-case conditions. |
| 3-State Enable/Disable Time | ten/tdis ≤ 32 ns (max) at VCC = 6.0 V - Ensures clean bus arbitration with minimal contention window during state transitions. |
| Input Clamp Diodes | Integrated - Allows safe connection of inputs to signals up to VCC + 0.5 V using external current-limiting resistors. |
| Operating Temperature | -40 °C to +125 °C - Qualified for industrial and extended-temperature embedded control applications. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces need for external ESD protection in board-level designs. |
Pinout & Package
74HC125D,653 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Thermal performance includes linear power dissipation derating of 10.1 mW/K above 100 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 (1OE–4OE) | Active-low output enable | Each controls one buffer's output state: LOW enables drive, HIGH forces high-impedance OFF. |
| 2, 5, 9, 12 (1A–4A) | Data input | CMOS-compatible inputs with clamp diodes; accept VI up to VCC + 0.5 V when current-limited. |
| 3, 6, 8, 11 (1Y–4Y) | Non-inverting buffered output | 3-state outputs support wired-OR bus architectures and bidirectional data sharing. |
| 7 | GND | Reference ground for all I/O and supply terminals; must be low-impedance for noise immunity. |
| 14 | VCC | Primary supply rail; decoupling capacitor (100 nF ceramic) required within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 2.0 V to 6.0 V - Eliminates need for separate voltage regulators in mixed-supply systems. |
| High noise immunity | Typical VIH/VIL margins >1.3 V at VCC = 4.5 V - Resists coupling-induced glitches in noisy industrial environments. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - Prevents destructive latch-up during transient overvoltage events. |
| Input clamp diodes | Integrated on all inputs - Enables robust interfacing to overvoltage sources (e.g., microcontroller GPIOs in reset states). |
| JEDEC-compliant packaging | SOT108-1 (SO14) - Compatible with standard reflow profiles and automated optical inspection (AOI) workflows. |
Applications
| Industrial Bus Isolation | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Isolating multiple sensor modules on a shared I²C or SPI bus to prevent signal contention during hot-swap or fault conditions. IC Role / Device Role / Timing Role: Quad buffer acts as directional gate, enabling/disabling individual sensor data paths via discrete OE lines synchronized to MCU firmware control. Use Value: Prevents bus lockup by ensuring only one sensor drives the line at a time; 32 ns max disable time guarantees sub-microsecond arbitration. |
Use Scenario: Expanding limited GPIO count of an ARM Cortex-M0+ MCU to drive 12-bit DACs, LED drivers, and status indicators in a programmable logic controller. IC Role / Device Role / Timing Role: Buffers translate weak MCU output currents (±4 mA) to ±7.8 mA drive strength needed for parallel load switching. Use Value: Eliminates external transistor arrays; CMOS input thresholds match MCU 3.3 V logic levels without level shifters. |
| Legacy System Interface Adapter | Test Equipment Signal Routing |
|
Use Scenario: Interfacing modern 3.3 V FPGA I/O banks to legacy 5 V TTL peripherals (e.g., EPROM programmers, parallel port devices). IC Role / Device Role / Timing Role: Acts as level-tolerant unidirectional driver: FPGA outputs feed 74HC125 inputs; outputs drive 5 V loads with VCC = 5 V. Use Value: Clamp diodes protect FPGA pins from 5 V back-drive; 6 V absolute max rating allows safe 5 V operation with margin. |
Use Scenario: Dynamic signal path configuration in automated test equipment (ATE), where DUT signals are routed between measurement instruments and stimulus sources. IC Role / Device Role / Timing Role: Four independent 3-state buffers serve as software-controlled multiplexer elements, selected via FPGA-configured OE lines. Use Value: 9 ns propagation delay ensures <10 ns path uncertainty; SO14 package supports dense PCB layouts with 0.5 mm trace spacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT125D,653 | TTL-compatible inputs (VIH ≥ 2.0 V); identical pinout, timing, and package. | Required when driving from 5 V TTL or LSTTL sources; not suitable for pure CMOS systems below 3.3 V. | Select when interfacing legacy 5 V logic families; avoid in 2.0–3.6 V-only systems due to higher VIH threshold. |
| SN74LVC125APWR | Lower VCC range (1.65–3.6 V); faster tpd (5.5 ns typ at 3.3 V); different pinout (TSSOP14). | Optimized for 3.3 V/2.5 V portable electronics; lacks clamp diodes and 6 V tolerance. | Choose for battery-powered designs needing ultra-low power and speed; verify PCB footprint compatibility before substitution. |
Compared with 74HC125D,653, the 74HCT125D,653 offers better compatibility with older 5 V logic but sacrifices low-voltage operation, while SN74LVC125APWR improves speed and efficiency at 3.3 V but removes overvoltage robustness and industrial temperature support.
Availability
74HC125D,653 is available at Aetrix Electronics and suitable for industrial bus isolation, microcontroller GPIO expansion, legacy system interface adapters, and test equipment signal routing requiring stable component supply across extended temperature ranges.
Supply support for 74HC125D,653 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and scalability for industrial and consumer applications.
The 74HC125 belongs to Nexperia's HC logic family, designed for general-purpose digital interfacing with wide supply range, robust ESD protection, and guaranteed operation across -40 °C to +125 °C for demanding embedded environments.
FAQ
Can 74HC125D,653 operate reliably at 2.0 V supply?
Yes. The device is fully specified from 2.0 V to 6.0 V, with guaranteed VIH ≥ 1.5 V and VIL ≤ 0.5 V at VCC = 2.0 V, and propagation delay ≤ 100 ns under those conditions. It maintains full functionality including 3-state control and output drive down to 2.0 V, making it suitable for ultra-low-power battery-operated systems.
What is the maximum capacitive load the outputs can drive?
The outputs are characterized up to 50 pF load capacitance in dynamic testing, with propagation delay and transition time specs validated at CL = 50 pF. While not explicitly rated beyond that, practical use with up to 100 pF is feasible with increased tpd and tt; for heavier loads, external buffering or series termination is recommended to maintain signal integrity.
Does 74HC125D,653 support hot-swap or live-insertion?
No. Although it includes input clamp diodes and high-impedance outputs, the device lacks explicit hot-swap circuitry such as slew-rate control or power-on reset. Applying VCC while inputs are biased risks violating absolute maximum ratings; proper power sequencing-VCC first, then inputs-is required for reliable operation.
How does the 74HC125D,653 differ from the 74HC244?
The 74HC125D,653 provides four independent 3-state non-inverting buffers, each with its own OE pin. In contrast, the 74HC244 groups buffers into two sets of four with shared OE control per group. This makes the 74HC125 more flexible for fine-grained bus arbitration but less compact for bulk enable/disable operations.
74HC125D,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HC125D,653 FAQ
1.How can I place an order for 74HC125D,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC125D,653 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 74HC125D,653 reliable?
The price and inventory of 74HC125D,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC125D,653 is usually 5 days.
3.What payment methods are accepted for 74HC125D,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC125D,653 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC125D,653?
74HC125D,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC125D,653 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 74HC125D,653?
For technical support, including 74HC125D,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC125D,653 requirements.
6.How does Aetrix verify that 74HC125D,653 is sourced from the original manufacturer or authorized distributors?
All 74HC125D,653 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 74HC125D,653 meets industry standards.
7.What is the process for return or replacement of 74HC125D,653?
All 74HC125D,653 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC125D,653, 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 74HC125D,653 part is unused and in its original packaging.
Return procedure for 74HC125D,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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