My Inquiry
My Account
NXP Semiconductors 74HC125DB,112
- Part No.:
- 74HC125DB,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC125DB,112.pdf
- Description:
- IC BUFFER NON-INVERT 6V 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HC125DB,112 from Nexperia is a quad 3-state buffer/line driver IC in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, with CMOS-level inputs, 17 ns max propagation delay at VCC = 6.0 V, and ±35 mA output drive capability. It enables bidirectional bus isolation in digital logic systems such as microcontroller peripheral interfaces and memory address/data latching.
For engineers reviewing the 74HC125DB,112 datasheet, 74HC125DB,112 pinout, 74HC125DB,112 application, or 74HC125DB,112 equivalent, key selection criteria include 3-state enable timing (max 32 ns disable time), input clamp diode support for overvoltage-tolerant interfacing, wide temperature range (−40 °C to +125 °C), and SO14 package compatibility with legacy PCB footprints.
Technical Context
This device implements four independent non-inverting buffers, each with active-low 3-state output enable (nOE). Each buffer features input clamp diodes enabling current-limiting resistor use for interfacing signals exceeding VCC - critical for mixed-voltage domain bridging.
It operates across industrial and extended temperature ranges (−40 °C to +125 °C) and complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards. Input thresholds are CMOS-compatible (VIH = 0.7×VCC min), ensuring robust noise immunity and predictable switching at all valid supply voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct interface with 3.3 V and 5 V logic families without level shifters |
| Propagation Delay (tpd) | 9 ns (typ) to 17 ns (max) at VCC = 6.0 V - ensures sub-20 ns timing margin for 25 MHz bus operation |
| Output Drive Current | ±35 mA - sufficient to drive standard TTL loads or multiple CMOS inputs without external buffering |
| Input Clamp Diodes | Integrated - allows safe connection of inputs to voltages up to VCC + 0.5 V using series current-limiting resistors |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules and industrial control environments |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 Level 2 system-level ESD robustness requirements |
Pinout & Package
74HC125DB,112 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active-low output enable) | Independent per-buffer control: HIGH forces high-impedance output state, enabling bus sharing |
| 2, 5, 9, 12 | nA (data input) | CMOS-level buffered input; accepts 0–VCC logic swing with hysteresis-free switching |
| 3, 6, 8, 11 | nY (data output) | Non-inverting buffered output with 3-state capability; drives loads up to ±35 mA |
| 7 | GND | Reference ground plane connection; must be low-inductance for stable noise immunity |
| 14 | VCC | Primary power supply rail; requires local 100 nF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent 3-state buffers | Enables simultaneous control of four signal paths on shared buses without contention |
| Wide VCC range (2.0–6.0 V) | Eliminates need for separate voltage translators when interfacing 2.5 V, 3.3 V, and 5 V subsystems |
| Input clamp diodes | Permits safe interfacing to signals up to VCC + 0.5 V using simple series resistors - no external protection required |
| Latch-up immunity > 100 mA | Guarantees robust operation under transient overvoltage or ESD-induced current injection |
| −40 °C to +125 °C operation | Validated performance across full automotive under-hood and industrial ambient extremes |
Applications
| Microcontroller Bus Isolation | Memory Address Latching |
|---|---|
Use Scenario: Isolating GPIO expansion ports between an ARM Cortex-M4 MCU and external peripherals to prevent signal contention during reset or sleep modes. IC Role / Device Role / Timing Role: Quad buffer provides independent 3-state control per data line, synchronized by dedicated OE signals tied to MCU GPIOs. Use Value: Enables clean hot-plug capability and eliminates bus conflicts during firmware updates or brown-out recovery without hardware redesign. | Use Scenario: Driving multiplexed address lines to SRAM or Flash memory in embedded instrumentation where address stability must be maintained during read/write cycles. IC Role / Device Role / Timing Role: Acts as address latch driver with precise enable/disable timing (tdis ≤ 32 ns) to meet memory setup/hold windows. Use Value: Guarantees deterministic address hold time and prevents memory access corruption caused by floating bus states. |
| Digital Logic Level Translation | Industrial I/O Expansion |
Use Scenario: Interfacing a 3.3 V FPGA I/O bank to legacy 5 V sensor interface circuitry in factory automation controllers. IC Role / Device Role / Timing Role: Buffer provides voltage-tolerant input clamping and rail-to-rail output swing compatible with both logic families. Use Value: Eliminates discrete level-shifter components and reduces BOM count while maintaining <20 ns propagation delay for real-time response. | Use Scenario: Expanding digital input/output capacity in PLC backplanes where multiple sensors and actuators share a common control bus. IC Role / Device Role / Timing Role: Functions as a bus transceiver enabler - four buffers isolate field-side I/O from controller-side logic during fault conditions. Use Value: Supports fail-safe bus shutdown via OE assertion, preventing erroneous actuator activation during diagnostics or maintenance. |
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,118 | Same die, identical electrical specs, SO14 package - differs only in tape-and-reel packaging quantity (2500 vs. 1000 units) | No functional difference; suitable for same designs requiring full reel procurement | Select for volume production where reel size aligns with SMT line feeder configuration |
| SN74HC125DR | Texas Instruments part in SOIC-14; VIH/VIL thresholds match HC family but propagation delay slightly higher (20 ns max at 6 V) | Compatible in pinout and function but requires validation of timing margins in high-speed bus applications | Choose only if TI supply chain continuity or dual-sourcing policy mandates second-source qualification |
Compared with 74HC125D,118, the 74HC125DB,112 offers identical performance in a verified 1000-unit reel format optimized for prototyping and low-volume production; versus SN74HC125DR, it delivers tighter 17 ns max tpd and guaranteed Nexperia's −40 °C to +125 °C characterization across all parameters.
Availability
74HC125DB,112 is available at Aetrix Electronics and suitable for microcontroller bus isolation, memory address latching, and industrial I/O expansion requiring stable component supply across extended temperature ranges.
Supply support for 74HC125DB,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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HC125 belongs to Nexperia's industry-standard HC logic family, designed for reliable, low-power digital interfacing in space-constrained and thermally demanding applications.
FAQ
What is the maximum clock frequency supported by 74HC125DB,112?
The 74HC125DB,112 is not a clocked device - it is a combinational buffer with no internal clock. Its usable signal frequency depends on propagation delay and load capacitance. With CL = 50 pF and VCC = 6.0 V, tpd ≤ 17 ns supports clean edge transmission up to ~30 MHz for single-bit signals, assuming proper PCB layout and termination.
Can 74HC125DB,112 drive LED loads directly?
No - while its ±35 mA output rating exceeds typical LED forward current (10–20 mA), the 74HC125DB,112 lacks current regulation and thermal shutdown. Direct LED driving risks output stage damage due to sustained DC current and self-heating. Use with series current-limiting resistors and verify junction temperature rise under worst-case duty cycle.
Is 74HC125DB,112 pin-compatible with 74HCT125 variants?
Yes - 74HC125DB,112 shares identical SO14 pinout and footprint with 74HCT125D variants. However, input thresholds differ: HC uses CMOS levels (VIH ≥ 0.7×VCC), while HCT uses TTL levels (VIH ≥ 2.0 V). Swapping requires verification that driving sources meet the respective input voltage requirements.
Does 74HC125DB,112 require external pull-up or pull-down resistors on OE pins?
No - OE pins are active-low digital inputs with standard CMOS thresholds and negligible leakage (<±0.1 μA). They may be driven directly from MCU GPIOs or logic gates. Pull-up resistors are unnecessary unless open-drain control sources are used; in those cases, a 10 kΩ pull-up to VCC ensures defined HIGH state during reset.
74HC125DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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-SSOP
74HC125DB,112 FAQ
1.How can I place an order for 74HC125DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC125DB,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 74HC125DB,112 reliable?
The price and inventory of 74HC125DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC125DB,112 is usually 5 days.
3.What payment methods are accepted for 74HC125DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC125DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC125DB,112?
74HC125DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC125DB,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 74HC125DB,112?
For technical support, including 74HC125DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC125DB,112 requirements.
6.How does Aetrix verify that 74HC125DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HC125DB,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 74HC125DB,112 meets industry standards.
7.What is the process for return or replacement of 74HC125DB,112?
All 74HC125DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC125DB,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 74HC125DB,112 part is unused and in its original packaging.
Return procedure for 74HC125DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC125DB,112 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…
