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NXP Semiconductors 74ABT125N,602
- Part No.:
- 74ABT125N,602
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
74ABT125N,602.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
74ABT125N,602 from NXP Semiconductors is a quad 3-state buffer IC designed for high-speed bus line driving in industrial and embedded digital systems. It features four independent output-enable inputs (1OE–4OE), 3.3 V/5 V tolerant inputs, ±32 mA HIGH/±64 mA LOW output drive, and operates across −40 °C to +85 °C. Its BiCMOS architecture delivers low static/dynamic power with propagation delays as low as 2.8 ns (typ) at 5.0 V.
For engineers reviewing the 74ABT125N,602 datasheet, 74ABT125N,602 pinout, 74ABT125N,602 application, or 74ABT125N,602 equivalent, this device is selected for bidirectional bus isolation, level translation between logic families, and hot-swap-capable peripheral interfacing where robust drive strength and fast enable/disable timing are critical.
Technical Context
The 74ABT125N,602 implements four identical non-inverting buffers, each with an active-low 3-state output enable. Each channel operates independently: when its OE is LOW, the output follows the input (L→L, H→H); when OE is HIGH, the output enters high-impedance state (Z). Inputs remain functional during 3-state mode but are electrically disabled only when OE is asserted - not gated by output state.
Its BiCMOS process enables simultaneous high-speed switching (tPLH/tPHL ≤ 4.6 ns max) and strong current sourcing/sinking (IOH = −32 mA, IOL = +64 mA at VCC = 4.5 V), while maintaining low ICC (≤250 µA in enabled HIGH-state) and supporting live insertion/extraction per JESD78 Class II latch-up immunity (>500 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage 3.3 V/5 V system rails |
| Propagation delay (nA→nY) | 1.0–4.6 ns - enables sub-200 MHz bus operation with tight timing margins |
| Output drive (LOW) | +64 mA - drives heavy capacitive loads (e.g., >50 pF buses) without signal degradation |
| Output drive (HIGH) | −32 mA - supports fan-out to multiple CMOS/TTL inputs while maintaining VOH ≥ 2.5 V |
| Input voltage range | 0 V to VCC - allows direct interface with 3.3 V logic outputs even at 5 V supply |
| ESD protection | HBM > 2000 V, MM > 200 V - meets industrial handling requirements without external protection |
| Operating temperature | −40 °C to +85 °C - qualified for extended industrial ambient environments |
Pinout & Package
DIP14 package (SOT27-1): plastic dual in-line, 14 leads, 300 mil width, through-hole mount. Pin 1 index marked; GND at pin 7, VCC at pin 14.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1OE, 2OE, 3OE, 4OE | Active-low output enable controls - each independently disables one buffer's output to high-Z |
| 2, 5, 9, 12 | 1A, 2A, 3A, 4A | Buffer data inputs - accept TTL/CMOS logic levels; no internal pull-ups/pull-downs |
| 3, 6, 8, 11 | 1Y, 2Y, 3Y, 4Y | Buffer data outputs - deliver full-rail swing (VOL ≤ 0.55 V, VOH ≥ 2.5 V) under rated load |
| 7 | GND | Ground reference - must be connected to system 0 V plane; decoupling capacitor required near pin |
| 14 | VCC | Positive supply - requires local 100 nF ceramic decoupling; not internally regulated |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent 3-state buffers | Enables selective bus segment isolation without shared control - critical for multi-master arbitration |
| Live insertion/extraction support | Prevents bus contention during hot-plug of peripheral cards via controlled enable sequencing |
| Power-up 3-state | Outputs default to high-Z at power-on - eliminates undefined bus states during supply ramp-up |
| Latch-up immunity | Exceeds 500 mA per JESD78 Class II - withstands transient overcurrent events in noisy industrial environments |
| Low input capacitance | CI = 4 pF - minimizes loading on upstream drivers and preserves signal edge integrity |
Applications
| Industrial PLC Backplane Interface | Legacy ISA Bus Expansion Card |
|---|---|
|
Use Scenario: Isolating CPU address/data lines from modular I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus buffer with per-channel OE control to prevent contention during module hot-swap and firmware update cycles. Use Value: 64 mA sink capability drives long backplane traces (≥30 cm) with <5% overshoot; tPZL ≤ 5.5 ns ensures clean disable timing before new module asserts control. |
Use Scenario: Extending legacy ISA bus signals to add-on cards requiring 5 V TTL compatibility and noise margin. IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer between motherboard and expansion slot, supporting multiple memory-mapped peripherals. Use Value: Input tolerance to 0–5.5 V allows direct connection to ISA's 5 V signaling; 4.6 ns max tPHL maintains setup/hold for 8 MHz ISA timing. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Control Logic |
|
Use Scenario: Driving high-capacitance test head cables (≥100 pF) from FPGA-based pattern generators. IC Role / Device Role / Timing Role: Output driver stage that translates FPGA LVCMOS outputs to robust 5 V bus signals with precise enable timing. Use Value: CO = 7 pF minimizes added load; tPZH ≤ 5.9 ns enables synchronized channel enable across 4 parallel data lanes. |
Use Scenario: Controlling relay banks and opto-isolated sensor inputs in production line test fixtures. IC Role / Device Role / Timing Role: Interfacing microcontroller GPIOs to higher-current external loads while providing electrical isolation via 3-state buffering. Use Value: −32 mA source / +64 mA sink drives relay coils directly; ESD rating >2000 V HBM prevents field failures during manual fixture reconfiguration. |
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 |
|---|---|---|---|
| SN74ABT125N | Identical pinout, same BiCMOS process, identical AC/DC specs; TI version with minor packaging marking variance | No functional difference - suitable for second-source procurement in existing DIP14 layouts | Select when TI-sourced supply chain diversification is required without redesign |
| 74LVT125PW | Lower VCC range (2.7–3.6 V), 3.3 V only; 24 mA/24 mA drive; TSSOP14 package only | Not compatible with 5 V systems; requires level-shifting if interfacing with legacy 5 V buses | Choose only for new 3.3 V-only designs where space-constrained TSSOP layout is mandatory |
Compared with SN74ABT125N and 74LVT125PW, the 74ABT125N,602 uniquely supports full 5 V operation with industrial-grade drive strength and DIP14 through-hole mounting - making it irreplaceable in legacy-reliant, high-noise, or serviceable hardware where drop-in 5 V compatibility and mechanical robustness are non-negotiable.
Availability
74ABT125N,602 is available at Aetrix Electronics and suitable for industrial PLC backplanes, legacy ISA bus expansions, automated test fixture control logic, and digital pattern generator output stages requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74ABT125N,602 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in high-performance logic and interface ICs.
The 74ABT125N,602 belongs to NXP's ABT-series advanced BiCMOS logic family, engineered specifically for high-speed, high-drive bus interface applications in industrial control and legacy system upgrades where reliability and 5 V compatibility are essential.
FAQ
What is the maximum operating frequency supported by the 74ABT125N,602?
The 74ABT125N,602 does not specify a maximum clock frequency, but its propagation delay (tPLH/tPHL ≤ 4.6 ns max at 5.0 V) supports reliable operation on buses with signal periods ≥10 ns - corresponding to effective data rates up to ~100 MHz in point-to-point configurations. System-level timing depends on load capacitance, termination, and routing; for 50 pF loads, usable bandwidth exceeds 200 MHz.
Can the 74ABT125N,602 operate with a 3.3 V supply voltage?
No - the 74ABT125N,602 requires a minimum supply voltage of 4.5 V and is rated only for 4.5 V to 5.5 V operation per Table 5. Applying 3.3 V will result in undefined logic thresholds, degraded output drive, and potential failure to meet VOH/VOL specifications. For 3.3 V systems, consider the pin-compatible 74LVT125 or 74ALVC125 families instead.
Is the 74ABT125N,602 pin-compatible with other packages in the 74ABT125 family?
Yes - all 74ABT125 variants (including 74ABT125D, 74ABT125DB, 74ABT125PW, and 74ABT125BQ) share identical pin functions and logic behavior. The 74ABT125N,602 (DIP14) matches the pinout of SO14, SSOP14, TSSOP14, and DHVQFN14 versions exactly, enabling direct PCB footprint substitution when mechanical constraints allow.
Does the 74ABT125N,602 require external pull-up or pull-down resistors on its OE inputs?
No - the 74ABT125N,602 OE inputs have no internal biasing and exhibit ≤±1.0 µA leakage (Table 6), so they must be actively driven to defined logic levels. Leaving OE floating risks indeterminate output states. External pull-downs (to GND) are recommended when OE must default to active (buffer enabled) at power-up; pull-ups (to VCC) for default-disabled operation.
What thermal derating applies to the 74ABT125N,602 in continuous operation?
The 74ABT125N,602 (DIP14 package) has no specified thermal derating curve in the datasheet, unlike SO14/SSOP14/TSSOP14 variants. Its maximum total power dissipation is 500 mW across −40 °C to +85 °C ambient (Table 4). At elevated ambient temperatures, junction temperature must remain ≤150 °C - design calculations should use θJA ≈ 60 °C/W (typical for DIP14) and include board copper area effects.
74ABT125N,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-DIP
74ABT125N,602 FAQ
1.How can I place an order for 74ABT125N,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT125N,602 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 74ABT125N,602 reliable?
The price and inventory of 74ABT125N,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT125N,602 is usually 5 days.
3.What payment methods are accepted for 74ABT125N,602?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT125N,602 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT125N,602?
74ABT125N,602 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT125N,602 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 74ABT125N,602?
For technical support, including 74ABT125N,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT125N,602 requirements.
6.How does Aetrix verify that 74ABT125N,602 is sourced from the original manufacturer or authorized distributors?
All 74ABT125N,602 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 74ABT125N,602 meets industry standards.
7.What is the process for return or replacement of 74ABT125N,602?
All 74ABT125N,602 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT125N,602, 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 74ABT125N,602 part is unused and in its original packaging.
Return procedure for 74ABT125N,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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