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NXP Semiconductors 74HC125PW,112
- Part No.:
- 74HC125PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC125PW,112.pdf
- Description:
- IC BUFFER DVR TRI-ST QD 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,600
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Product details
Overview
74HC125PW,112 from Nexperia is a quad 3-state buffer/line driver IC in TSSOP14 package, operating from 2.0 V to 6.0 V supply, with CMOS-level inputs, propagation delay as low as 9 ns at VCC = 6.0 V, and guaranteed operation from –40 °C to +125 °C. It enables bidirectional bus isolation in digital logic systems by independently controlling output enable (nOE) inputs for each of four channels.
For engineers reviewing the 74HC125PW,112 datasheet, 74HC125PW,112 pinout, 74HC125PW,112 application, or 74HC125PW,112 equivalent, key selection criteria include 3-state timing performance (ten/tdis ≤ 32 ns), input clamp diode support for overvoltage-tolerant interfacing, and thermal derating behavior (7.3 mW/K above 81 °C) in the TSSOP14 package.
Technical Context
This device implements four independent non-inverting buffers, each with active-low 3-state output control (1OE–4OE). Each channel features input clamp diodes enabling current-limiting resistor-based interfacing to voltages exceeding VCC - critical for mixed-voltage domain bridging.
It adheres to JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards, supports TTL-compatible input thresholds only in the 74HCT125 variant, and delivers high noise immunity (typical VIH/VIL margins >1.0 V at VCC = 4.5 V) and latch-up immunity >100 mA per JESD78 Class II Level B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 6.0 V - supports wide-rail logic interfacing including 3.3 V and 5 V systems without level shifters. |
| Propagation delay (nA→nY) | 9 ns (typ) at VCC = 6.0 V, CL = 50 pF - ensures sub-10 ns timing margin for high-speed bus buffering. |
| Enable/disable time (nOE→nY) | 12 ns (typ) at VCC = 6.0 V - guarantees fast bus turnaround in shared-data-path applications. |
| Output drive strength | ±35 mA (absolute max), ±7.8 mA (VOH/VOL spec) - sufficient to drive standard TTL loads and moderate PCB traces. |
| Input clamp diode support | VI < –0.5 V or > VCC + 0.5 V - allows safe interface to external signals up to ±20 mA clamping current. |
| Operating temperature | –40 °C to +125 °C - qualified for industrial and extended-temperature embedded control environments. |
| ESD protection | HBM >2000 V, CDM >1000 V - reduces risk of handling damage during assembly and field service. |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, 0.65 mm lead pitch, exposed pad not present, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1OE, 2OE, 3OE, 4OE | Active-low output enable inputs - each controls one buffer's 3-state output independently. |
| 2, 5, 9, 12 | 1A, 2A, 3A, 4A | Data inputs - non-inverting logic inputs accepting CMOS-level signals (74HC125). |
| 3, 6, 8, 11 | 1Y, 2Y, 3Y, 4Y | Buffered outputs - high-impedance when corresponding nOE is HIGH; otherwise replicate input state. |
| 7 | GND | Ground reference (0 V) - must be low-inductance connection to minimize switching noise coupling. |
| 14 | VCC | Positive supply rail - decoupling capacitor (100 nF ceramic) required within 5 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (2.0–6.0 V) | Enables direct interoperability across 2.5 V, 3.3 V, and 5 V logic families without external regulators. |
| Input clamp diodes | Permits robust interfacing to external signals exceeding VCC using series current-limiting resistors. |
| High noise immunity | Typical noise margin >1.0 V at VCC = 4.5 V ensures reliable operation in electrically noisy industrial enclosures. |
| Thermal derating (TSSOP14) | 7.3 mW/K linear power dissipation reduction above 81 °C - informs thermal design for continuous operation. |
| JEDEC-compliant packaging | SOT402-1 footprint matches MO-153 standard - ensures compatibility with automated SMT placement and reflow profiles. |
Applications
| Industrial PLC I/O Expansion | Microcontroller Bus Isolation |
|---|---|
|
Use Scenario: Isolating multiple microcontroller GPIO banks from a shared 8-bit parallel data bus in programmable logic controllers. IC Role / Device Role / Timing Role: Quad 3-state buffer providing channel-selectable bus drive and high-Z tri-state control under firmware command. Use Value: Enables dynamic bus arbitration with <32 ns total enable/disable latency, preventing signal contention during peripheral hot-swap. |
Use Scenario: Buffering address/data lines between an ARM Cortex-M4 MCU and external SRAM or FPGA configuration memory. IC Role / Device Role / Timing Role: Non-inverting line driver with independent OE control per channel to manage read/write direction and timing alignment. Use Value: Delivers 9 ns propagation delay at 6 V, meeting tight setup/hold timing budgets for 20+ MHz parallel memory interfaces. |
| Test Equipment Signal Routing | Legacy System Voltage Translation |
|
Use Scenario: Multiplexing test signals from multiple DUTs onto a single acquisition channel in automated test equipment. IC Role / Device Role / Timing Role: 3-state buffer acting as digitally controlled analog switch for logic-level signals, minimizing crosstalk via high-Z isolation. Use Value: Input clamp diodes allow safe connection to DUTs operating at 3.3 V, 5 V, or 12 V logic rails using simple series resistors. |
Use Scenario: Interfacing a 3.3 V FPGA I/O bank to legacy 5 V peripherals such as EEPROMs or LCD controllers. IC Role / Device Role / Timing Role: Level-shifting buffer leveraging CMOS input thresholds and 5 V tolerant outputs (via clamp diodes + current limiting). Use Value: Eliminates need for discrete level translators; supports bidirectional signal flow with <15 ns enable-to-output delay at 5 V supply. |
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 |
|---|---|---|---|
| 74HC125D,112 | Same logic function and specs, but in SO14 (SOT108-1) package with 1.27 mm pitch and 3.9 mm body width. | SO14 offers higher thermal mass and easier hand-soldering; TSSOP14 provides 35 % board area reduction. | Select 74HC125D,112 for prototyping or thermal-heavy designs; choose 74HC125PW,112 for space-constrained production boards. |
| SN74LVC125APWR | 3.3 V only (1.65–3.6 V), lower propagation delay (3.5 ns typ), higher drive (±24 mA), no input clamp diodes. | Not suitable for mixed-voltage or overvoltage-tolerant use; optimized for high-speed 3.3 V LVTTL systems. | Choose SN74LVC125APWR only if system operates strictly at 3.3 V and requires sub-4 ns timing; avoid where VCC > 3.6 V or overvoltage protection is needed. |
Compared with 74HC125D,112, the 74HC125PW,112 saves PCB area and improves high-frequency signal integrity via shorter bond wires, while SN74LVC125APWR trades voltage flexibility for speed and lower power - making it unsuitable for 5 V or mixed-rail designs requiring clamp diode protection.
Availability
74HC125PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller bus isolation, test equipment signal routing, and legacy system voltage translation requiring stable component supply across extended temperature ranges.
Supply support for 74HC125PW,112 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, reliable logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial and consumer electronics.
The 74HC125 belongs to Nexperia's HC-series logic family, designed for robust, wide-supply-voltage digital interfacing in cost-sensitive, thermally demanding embedded systems.
FAQ
What is the maximum clock frequency supported by the 74HC125PW,112?
The 74HC125PW,112 is not a clocked device and has no internal clock; its usable frequency depends on propagation delay and load capacitance. With CL = 50 pF and VCC = 6.0 V, tpd = 9 ns (typ), supporting clean signal edges up to ~35 MHz for repetitive toggling - verified via dynamic characteristics in Table 7 of the datasheet.
Can the 74HC125PW,112 safely interface a 5 V signal to a 3.3 V microcontroller input?
Yes - input clamp diodes allow external current-limiting resistors to safely shunt excess voltage. For a 5 V signal into a 3.3 V VCC system, a 1 kΩ resistor limits input current to <20 mA (per Table 4), keeping VI within safe clamping range and protecting downstream logic.
Does the 74HC125PW,112 require external pull-up or pull-down resistors on its OE pins?
No - OE pins are active-low CMOS inputs with ±0.1 μA leakage (Table 6); they can be driven directly by MCU GPIO or logic gates. However, for fail-safe high-Z default on power-up, tie OE to VCC via 10 kΩ resistor unless firmware actively asserts it low after initialization.
How does thermal derating affect power dissipation in the TSSOP14 package?
For the SOT402-1 (TSSOP14) package, Ptot = 500 mW at ≤81 °C, then derates linearly at 7.3 mW/K above that. At 100 °C ambient, max allowable power drops to 500 − (19 × 7.3) ≈ 361 mW - a critical constraint for sustained high-drive operation in enclosed industrial enclosures.
74HC125PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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-TSSOP
74HC125PW,112 FAQ
1.How can I place an order for 74HC125PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC125PW,112 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 74HC125PW,112 reliable?
The price and inventory of 74HC125PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC125PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC125PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC125PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC125PW,112?
74HC125PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC125PW,112 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 74HC125PW,112?
For technical support, including 74HC125PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC125PW,112 requirements.
6.How does Aetrix verify that 74HC125PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC125PW,112 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 74HC125PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC125PW,112?
All 74HC125PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC125PW,112, 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 74HC125PW,112 part is unused and in its original packaging.
Return procedure for 74HC125PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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