My Inquiry
My Account
Nexperia USA Inc. 74AHCT125PW,118
- Part No.:
- 74AHCT125PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT125PW,118.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,948
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AHCT125PW,118 from Nexperia is a quad 3-state buffer/line driver with TTL-compatible inputs, operating from 4.5 V to 5.5 V supply, delivering propagation delay as low as 3.0 ns (VCC = 5.0 V, CL = 15 pF), and supporting industrial temperature range (–40 °C to +125 °C) in a 14-lead TSSOP package. It enables bidirectional bus isolation in microcontroller I/O expansion and legacy logic interfacing.
For engineers reviewing the 74AHCT125PW,118 datasheet, 74AHCT125PW,118 pinout, 74AHCT125PW,118 application, or 74AHCT125PW,118 equivalent, this device serves as a voltage-level tolerant, low-power, high-noise-immunity buffer for mixed-voltage digital systems requiring precise timing control, output enable coordination, and robust ESD protection (HBM > 2000 V).
Technical Context
The 74AHCT125PW,118 implements four independent non-inverting buffers, each with active-low 3-state output enable (nOE). Its TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure compatibility with legacy 5 V logic families while maintaining CMOS power efficiency.
Each channel features overvoltage-tolerant inputs (up to 5.5 V), Schmitt-trigger action on all inputs, and balanced propagation delays between rising/falling edges (tPLH ≈ tPHL). Output drive strength is ±8 mA at VCC = 4.5 V, with guaranteed VOH ≥ 3.94 V and VOL ≤ 0.36 V under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures interoperability with standard 5 V TTL and mixed-supply systems without level shifters. |
| Propagation Delay | 3.0 ns (typ, VCC = 5.0 V, CL = 15 pF) - Enables reliable operation in high-speed digital buses up to ~150 MHz clock-equivalent rates. |
| Output Drive | ±8 mA - Sufficient to drive 10 LSTTL loads or 15 pF capacitive loads with controlled edge rates. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - Matches standard TTL logic levels for seamless integration with 74LS/74F families. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets JEDEC JS-001 Class 2 and JS-002 Class C3, reducing board-level ESD hardening requirements. |
| Operating Temperature | –40 °C to +125 °C - Qualified for under-hood automotive modules, industrial PLC I/O, and extended-range embedded controllers. |
| Power Dissipation | ICC ≤ 40 μA (max, VCC = 5.5 V, –40 °C to +125 °C) - Supports always-on logic functions in low-quiescent-power systems. |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1); 14 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 (1OE, 2OE, 3OE, 4OE) | Active-low output enable | Individually disables corresponding buffer output into high-impedance state; allows shared bus arbitration. |
| 2, 5, 9, 12 (1A, 2A, 3A, 4A) | Data input | TTL-compatible inputs tolerate 0–5.5 V; Schmitt-trigger action suppresses noise on slow-rising signals. |
| 3, 6, 8, 11 (1Y, 2Y, 3Y, 4Y) | Buffered output | Non-inverting, 3-state outputs support bidirectional data flow when paired with complementary drivers. |
| 7 | GND | Signal reference and return path; must be low-inductance connection for stable switching performance. |
| 14 | VCC | Primary power rail; decoupling capacitor (100 nF ceramic) required within 5 mm of pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| TTL input compatibility | Guaranteed VIH/VIL thresholds match 74LS family, eliminating need for external level translation in 5 V systems. |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V regardless of VCC setting - enables safe interfacing with hot-swap or mixed-rail subsystems. |
| High noise immunity | Input hysteresis (Schmitt-trigger) provides > 0.4 V noise margin, preventing false triggering on noisy PCB traces. |
| Low dynamic power | CPD = 12 pF - minimizes switching current in high-frequency applications; supports < 1 mW typical active power at 10 MHz. |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II Level A - ensures robustness against transient current surges during power sequencing. |
Applications
| Microcontroller I/O Expansion | Legacy Bus Interface |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU to drive 16-bit parallel LCD interface with separate read/write strobes. IC Role / Device Role / Timing Role: Four 74AHCT125PW,118 buffers isolate MCU pins from LCD data bus, enabling simultaneous read/write control via independent OE lines. Use Value: Eliminates contention risk during bus turnaround; 3.0 ns propagation delay ensures setup/hold timing compliance at 20 MHz pixel clock. |
Use Scenario: Interfacing a modern FPGA development board (3.3 V I/O) to a vintage ISA bus peripheral card (5 V TTL). IC Role / Device Role / Timing Role: Bidirectional level translation using two 74AHCT125PW,118 devices - one for address/data outbound, one for inbound control signals. Use Value: TTL input thresholds accept 3.3 V logic highs reliably; overvoltage tolerance protects FPGA I/O from 5 V transients. |
| Industrial Sensor Hub | Digital Test Equipment |
|
Use Scenario: Aggregating digital status signals (limit switches, fault flags) from 12 field devices into a single RS-485 master controller. IC Role / Device Role / Timing Role: Parallel-to-serial multiplexing using OE-controlled enable sequencing to prevent bus contention across multiple sensor nodes. Use Value: –40 °C to +125 °C rating ensures reliability in uncontrolled cabinet environments; low ICC supports battery-backed operation. |
Use Scenario: Generating synchronized stimulus waveforms in automated test equipment (ATE) with precise edge placement. IC Role / Device Role / Timing Role: Clock distribution and signal conditioning stage driving high-capacitance probe cables and DUT fixtures. Use Value: Balanced tPLH/tPHL (< 0.5 ns skew) maintains waveform symmetry; 12 pF CPD limits jitter contribution from supply noise. |
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 |
|---|---|---|---|
| 74AHCT125D,118 | SO14 package (SOT108-1); 3.9 mm body width; higher thermal resistance (10.1 mW/K derating above 100 °C). | Better suited for through-hole prototyping or legacy PCB layouts with SOIC footprints; lower pin density than TSSOP. | Select when mechanical compatibility with existing SO14 land patterns is required or reflow profile constraints favor larger packages. |
| SN74AHCT125PWR | Texas Instruments part in 14-TSSOP; identical electrical specs but different ESD ratings (HBM = 2000 V vs. TI's 4000 V). | Approved for TI-specific design ecosystems; may require updated qualification documentation for automotive Tier-1 programs. | Choose only if TI's broader portfolio support, long-term availability guarantee, or specific qualification history is mandated. |
Compared with 74AHCT125D,118 and SN74AHCT125PWR, the 74AHCT125PW,118 offers optimal thermal performance in space-constrained designs due to its thinner TSSOP profile and lower junction-to-ambient resistance, while maintaining full functional equivalence and Nexperia's industry-leading latch-up immunity.
Availability
74AHCT125PW,118 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, legacy bus interface, and industrial sensor hub applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT125PW,118 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 focused on essential system functionality - delivering high-performance, reliable, and energy-efficient components for automotive, industrial, mobile, and computing markets.
The 74AHCT125PW,118 belongs to Nexperia's advanced logic family, engineered specifically for robust interoperability between legacy TTL and modern low-voltage logic systems while meeting stringent industrial reliability and ESD standards.
FAQ
Can 74AHCT125PW,118 operate with a 3.3 V supply?
No. The 74AHCT125 variant requires VCC between 4.5 V and 5.5 V to meet TTL input threshold specifications (VIH ≥ 2.0 V, VIL ≤ 0.8 V). For 3.3 V operation, use the 74AHC125PW,118 variant instead, which has CMOS-compatible inputs and supports 2.0–5.5 V supply.
What is the maximum capacitive load this device can drive reliably?
The 74AHCT125PW,118 is characterized up to 50 pF load capacitance with guaranteed timing (tpd ≤ 9.5 ns at VCC = 5.0 V). Driving > 50 pF may increase propagation delay and reduce noise margin; for > 100 pF loads, add series termination or consider a dedicated line driver.
Is the exposed pad on the TSSOP package electrically connected?
No. The exposed thermal pad in the SOT402-1 (TSSOP14) package is not electrically connected to any internal node. Per Nexperia's datasheet, it may remain floating or be soldered to GND for thermal improvement, but no electrical function is assigned to it.
How does the Schmitt-trigger input improve system reliability?
The Schmitt-trigger action provides hysteresis (~0.4 V typical) on each input, rejecting noise spikes and slow-rising signals that could cause metastability or double-clocking in synchronous systems - especially critical in industrial environments with long cable runs or relay-driven inputs.
74AHCT125PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74AHCT125PW,118 FAQ
1.How can I place an order for 74AHCT125PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT125PW,118 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 74AHCT125PW,118 reliable?
The price and inventory of 74AHCT125PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT125PW,118 is usually 5 days.
3.What payment methods are accepted for 74AHCT125PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT125PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT125PW,118?
74AHCT125PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT125PW,118 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 74AHCT125PW,118?
For technical support, including 74AHCT125PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT125PW,118 requirements.
6.How does Aetrix verify that 74AHCT125PW,118 is sourced from the original manufacturer or authorized distributors?
All 74AHCT125PW,118 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 74AHCT125PW,118 meets industry standards.
7.What is the process for return or replacement of 74AHCT125PW,118?
All 74AHCT125PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT125PW,118, 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 74AHCT125PW,118 part is unused and in its original packaging.
Return procedure for 74AHCT125PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT125PW,118 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…
