My Inquiry
My Account
NXP Semiconductors N74F125D,623
- Part No.:
- N74F125D,623
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
N74F125D,623.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
N74F125D,623 from NXP Semiconductors is a quad non-inverting 3-state buffer IC used for bus driving and signal isolation in TTL-compatible digital systems. It features four independent channels, each with active-low output enable (nOE), 5 V nominal supply operation, propagation delays as low as 2.0 ns (tPLH), and output drive capability up to 64 mA (IOL) in LOW state.
For engineers reviewing the N74F125D,623 datasheet, N74F125D,623 pinout, N74F125D,623 application, or N74F125D,623 equivalent, this device is selected for high-speed bus buffering where controlled output impedance, low propagation delay, and compatibility with FAST TTL logic families are required.
Technical Context
The N74F125D,623 implements four identical non-inverting buffer stages, each with a dedicated active-low 3-state enable input (nOE). When nOE is HIGH, the corresponding output (nY) enters high-impedance OFF-state; when LOW, nY follows nA with minimal delay.
It operates within 4.5 V to 5.5 V supply range, supports ambient temperatures from 0 °C to +70 °C, and uses standard FAST TTL input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and output voltage levels (VOH ≥ 2.4 V at IOH = −3 mA, VOL ≤ 0.55 V at IOL = 64 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage (VCC) | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/FAST logic rails |
| Propagation delay (tPLH) | 2.0 ns min / 6.5 ns max - enables >150 MHz bus toggle rates in point-to-point configurations |
| Output drive (IOL) | 64 mA - sufficient to drive 10 standard TTL loads or terminate short stubs on PCB traces |
| Input leakage (II) | ≤100 µA at VCC = 0 V - minimizes standby current in powered-down subsystems |
| OFF-state output current (IOZ) | ±50 µA - guarantees robust high-impedance isolation between enabled/disabled channels |
| Ambient temperature range | 0 °C to +70 °C - validated for commercial-grade industrial control and computing applications |
Pinout & Package
Package: SO14 - plastic small outline package, 14 leads, 3.9 mm body width, JEDEC MS-012 compliant (SOT108-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active LOW) | Independent 3-state enable inputs per channel - allows selective bus arbitration without gating data paths |
| 2, 5, 9, 12 | nA (input) | Non-inverting data inputs - compatible with TTL/FAST logic voltage thresholds and fanout loading |
| 3, 6, 8, 11 | nY (output) | 3-state buffered outputs - provide bidirectional bus isolation with <6.5 ns transition timing |
| 7 | GND | Ground reference - shared return path for all four channels and internal logic |
| 14 | VCC | Positive supply - powers all buffers and enable circuitry; decoupling required per channel group |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent 3-state buffers | Enables simultaneous control of four data lines with separate enable signals - ideal for multiplexed address/data buses |
| FAST TTL-compatible interface | Meets 20 µA input load specification - reduces loading on upstream drivers compared to standard TTL |
| Low propagation delay | tPLH/tPHL ≤ 6.5 ns at VCC = 5.0 V - supports high-speed synchronous bus protocols without added wait states |
| High sink/source capability | 64 mA sink (IOL), 15 mA source (IOH) - drives heavy capacitive loads or multiple downstream inputs directly |
| Robust OFF-state isolation | IOZ ≤ ±50 µA at VO = 0.5 V or 2.7 V - prevents crosstalk and leakage-induced glitches during bus contention |
Applications
| Microprocessor Bus Interface | Memory Address Latching |
|---|---|
Use Scenario: Isolating CPU address/data bus segments during DMA transfers or peripheral arbitration. IC Role / Device Role / Timing Role: 3-state buffer providing controlled signal gating and bus driver isolation. Use Value: Prevents bus contention by enabling/disabling specific channel groups synchronously with control signals, leveraging tPLZ/tPHZ < 6.0 ns for precise timing alignment. |
Use Scenario: Driving address lines to static RAM or ROM chips in embedded controllers. IC Role / Device Role / Timing Role: Non-inverting buffer amplifying and isolating address signals from microcontroller GPIO. Use Value: Delivers 64 mA sink current to meet memory chip setup/hold timing under 100 pF trace + load capacitance. |
| Programmable Logic Interfacing | Digital Test Equipment Signal Conditioning |
Use Scenario: Level-shifting and fanout expansion between CPLD I/O banks and external peripherals. IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent enable per channel for configurable signal routing. Use Value: Enables dynamic reconfiguration of signal paths via FPGA-controlled nOE pins, with sub-7 ns propagation ensuring deterministic timing. |
Use Scenario: Driving calibrated test patterns into DUT inputs while maintaining signal integrity across multiple channels. IC Role / Device Role / Timing Role: Precision output driver with matched delay characteristics across all four channels. Use Value: Matches tPLH/tPHL variation ≤ 0.5 ns (25 °C) to minimize skew in parallel stimulus generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F125N | DIP14 package (SOT27-1); identical electrical specs and pinout | Suitable for through-hole prototyping or legacy board repair; larger footprint and higher thermal resistance | Select when manual soldering, breadboarding, or compatibility with existing DIP layouts is required. |
| 74ACT125 | CMOS technology; 4.5–5.5 V supply; lower ICC (max 4 mA vs. 40 mA), higher noise immunity (VIH = 3.5 V), but slower tPLH (7.5 ns typ) | Better for low-power, noise-sensitive environments; not drop-in due to different input thresholds and drive strength | Choose for battery-powered or EMI-critical designs where power efficiency outweighs speed requirements. |
Compared with SN74F125N, the N74F125D,623 offers identical logic behavior in a space-saving SO14 package with improved thermal performance; versus 74ACT125, it delivers faster switching and higher drive at the cost of higher quiescent current and TTL-level input sensitivity.
Availability
N74F125D,623 is available at Aetrix Electronics and suitable for microprocessor bus interfacing, memory address latching, programmable logic interfacing, digital test equipment signal conditioning, and industrial control I/O expansion requiring stable component supply and long-term obsolescence management.
Supply support for N74F125D,623 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The 74F logic family, including the N74F125D,623, was designed for high-speed digital system interconnect-delivering FAST TTL performance with improved power-delay trade-offs over standard 74LS series.
FAQ
What is the maximum operating supply voltage for the N74F125D,623?
The N74F125D,623 has an absolute maximum supply voltage (VCC) rating of +7.0 V, but its recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this range may cause parametric shift or reliability degradation. The N74F125D,623 is not rated for 3.3 V operation and requires a regulated 5 V rail to meet specified timing and drive performance.
Does the N74F125D,623 support hot insertion or live bus swapping?
No, the N74F125D,623 does not include hot-swap protection circuitry such as power-up sequencing control, bus-fault detection, or slew-rate limiting. Its input and output structures are designed for static 5 V system operation only. Applying signals to nA or nY pins before VCC stabilization may exceed IIK or IO limits and risk latch-up. The N74F125D,623 must be powered and stabilized prior to signal application.
What is the input loading presented by each channel of the N74F125D,623?
Each input (nA or nOE) of the N74F125D,623 presents one FAST Unit Load (UL): 20 µA in HIGH state and 20 µA in LOW state. This is significantly lighter than standard TTL (40 µA), allowing the N74F125D,623 to drive more downstream inputs without exceeding fanout limits. Input leakage remains ≤100 µA across full temperature range.
Can the N74F125D,623 drive a 50 Ω transmission line directly?
The N74F125D,623 is not optimized for 50 Ω line driving. Its typical output impedance is ~10 Ω in LOW state and ~25 Ω in HIGH state-too low for clean 50 Ω termination. Driving such lines risks overshoot, ringing, and excessive current draw (IOL peaks at 128 mA absolute max). For 50 Ω applications, use the N74F125D,623 to drive a series-terminated source or pair with a dedicated line driver IC.
Is the N74F125D,623 pin-compatible with the 74LS125 or 74HC125?
The N74F125D,623 shares identical pinout (SO14/DIP14) and logic function with both 74LS125 and 74HC125, but is not electrically pin-compatible. Its input thresholds (VIH ≥ 2.0 V) match LS, not HC (VIH ≥ 3.5 V); its output drive (64 mA) exceeds LS (8 mA) and differs from HC (±7.8 mA). Substituting without verifying voltage levels, loading, and timing will cause functional failure. The N74F125D,623 must be used within FAST TTL design constraints.
N74F125D,623 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
N74F125D,623 FAQ
1.How can I place an order for N74F125D,623 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F125D,623 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 N74F125D,623 reliable?
The price and inventory of N74F125D,623 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F125D,623 is usually 5 days.
3.What payment methods are accepted for N74F125D,623?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for N74F125D,623 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for N74F125D,623?
N74F125D,623 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your N74F125D,623 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 N74F125D,623?
For technical support, including N74F125D,623 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F125D,623 requirements.
6.How does Aetrix verify that N74F125D,623 is sourced from the original manufacturer or authorized distributors?
All N74F125D,623 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 N74F125D,623 meets industry standards.
7.What is the process for return or replacement of N74F125D,623?
All N74F125D,623 units undergo pre-shipment inspection (PSI). If there is an issue with N74F125D,623, 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 N74F125D,623 part is unused and in its original packaging.
Return procedure for N74F125D,623:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
N74F125D,623 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…
