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NXP Semiconductors 74LVTH125D,118
- Part No.:
- 74LVTH125D,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74LVTH125D,118.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
74LVTH125D,118 from Nexperia is a 3.3 V quad non-inverting 3-state buffer with bus-hold inputs and IOFF partial power-down protection. It provides +64 mA sink / –32 mA source drive, operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and supports –40 °C to +85 °C ambient range. Used in 3.3 V system bus interfacing where hot-swap capability and unused-input stabilization are required.
For engineers reviewing the 74LVTH125D,118 datasheet, 74LVTH125D,118 pinout, 74LVTH125D,118 application, or 74LVTH125D,118 equivalent, key selection criteria include 3-state timing (tPZH ≤ 4.7 ns), bus-hold current (IBHL = 75–150 μA), IOFF leakage (< ±100 μA at VCC = 0 V), and SO14 package compatibility with legacy 74-series footprints.
Technical Context
This BiCMOS device implements four independent non-inverting buffers, each controlled by an active-low output enable (nOE). Each channel features bus-hold circuitry that maintains logic state on floating inputs without external pull-ups, and IOFF protection disables outputs during power-down to block backflow current.
It meets JEDEC JESD8C for 2.7–3.6 V operation, supports live insertion/extraction, and delivers TTL-compatible output levels while accepting 5.5 V-tolerant inputs-enabling mixed-voltage interfacing between 3.3 V logic and 5 V buses without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Ensures stable operation across industrial-grade 3.3 V rails with ±0.3 V tolerance. |
| Output Drive | +64 mA sink / –32 mA source - Drives heavy capacitive loads or multiple TTL inputs directly. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V buses without external clamping or translation. |
| Propagation Delay | tPLH/tPHL ≤ 4.0 ns @ VCC = 3.3 V - Supports >200 MHz bus toggle rates in high-speed digital systems. |
| Bus-Hold Current | IBHL = 75–150 μA @ VI = 0.8 V - Holds unused inputs at valid LOW without pull-up resistors, reducing BOM count. |
| IOFF Leakage | ±100 μA @ VCC = 0 V - Prevents damaging back-current when powered down in partial-power systems. |
| Operating Temperature | –40 °C to +85 °C - Qualified for industrial control, networking, and embedded computing environments. |
Pinout & Package
74LVTH125D,118 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, and standard JEDEC MO-127 footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active LOW) | Independent 3-state enable per buffer; HIGH forces high-impedance output. |
| 2, 5, 9, 12 | nA (data input) | Buffer input with bus-hold; holds last valid state if left unconnected. |
| 3, 6, 8, 11 | nY (data output) | Non-inverting buffered output; drives up to 64 mA into capacitive or resistive loads. |
| 7 | GND | Ground reference for all I/O and internal circuitry; must be connected. |
| 14 | VCC | Primary supply rail (2.7–3.6 V); powers internal BiCMOS logic and output stages. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 3-state buffer architecture | Four independent channels with individual OE control-enables flexible bus arbitration and multiplexing. |
| Bus-hold input circuitry | Eliminates need for 10 kΩ pull-up/pull-down resistors on unused inputs, reducing PCB area and assembly cost. |
| IOFF partial power-down | Outputs automatically disable and isolate when VCC = 0 V-prevents backfeed in hot-plug or multi-rail systems. |
| 5.5 V tolerant inputs | Interoperates with legacy 5 V logic without level shifters or voltage dividers-simplifies mixed-voltage board design. |
| TTL-compatible output drive | Directly interfaces with standard TTL loads (e.g., 74LS series) while operating at 3.3 V supply. |
Applications
| Industrial PLC Backplane Interface | Network Switch Control Bus |
|---|---|
Use Scenario: Isolating and driving address/data lines between FPGA-based controller and legacy 5 V peripheral modules on a modular I/O rack. IC Role / Device Role / Timing Role: Quad buffer provides direction-controlled signal conditioning and voltage-level bridging between 3.3 V FPGA I/O and 5 V fieldbus peripherals. Use Value: Bus-hold prevents floating inputs during module hot-swap; IOFF blocks back-current when a slot is powered down mid-operation. |
Use Scenario: Managing configuration and status signals across multiple ASICs and PHYs on a 10/100/1000BASE-T switch fabric card. IC Role / Device Role / Timing Role: 3-state buffering enables time-multiplexed sharing of common control lines (e.g., reset, interrupt, clock enable) among multiple devices. Use Value: Sub-4 ns propagation delay ensures setup/hold compliance at 100 MHz bus clocks; 64 mA drive handles 10+ ASIC inputs per line. |
| Medical Imaging Data Acquisition Module | Automated Test Equipment (ATE) Signal Conditioning |
Use Scenario: Buffering parallel ADC output streams from analog front-end boards before routing to a central FPGA processing unit. IC Role / Device Role / Timing Role: Non-inverting buffer preserves signal integrity and timing alignment across four simultaneous 12-bit data lanes. Use Value: Matched tPLH/tPHL (≤ 0.3 ns skew) minimizes inter-lane skew; low ICC (0.19 mA typical) reduces thermal load in sealed enclosures. |
Use Scenario: Driving high-capacitance test fixture cables and relay matrices in boundary-scan and functional test systems. IC Role / Device Role / Timing Role: Output driver stage providing robust edge rates and current delivery to overcome fixture parasitics. Use Value: +64 mA sink capability ensures clean logic transitions into 100 pF+ cable loads; ESD rating (>2000 V HBM) withstands repeated probe contact. |
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 |
|---|---|---|---|
| SN74LVC125APWR | Lower drive (+24 mA / –24 mA); no bus-hold; IOFF not specified; 1.65–3.6 V supply. | Suitable for low-power, low-noise 3.3 V-only systems but requires external pull-ups and lacks hot-swap safety. | Select when BOM cost is critical and bus-hold/IOFF are unnecessary. |
| 74ALVC125PW,118 | Higher speed (tPD ≤ 2.8 ns); same drive and bus-hold; identical SO14 package; –40 °C to +125 °C rating. | Supports extended temperature automotive or harsh-environment use but has higher ICC (0.3 mA typical). | Select when faster timing or wider temperature range is mandatory and power budget allows. |
Compared with SN74LVC125APWR, 74LVTH125D,118 offers superior drive strength and built-in bus-hold, eliminating external components; versus 74ALVC125PW,118, it trades 1.2 ns speed for lower static current and lower cost in industrial-temperature applications.
Availability
74LVTH125D,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, network switch control buses, medical imaging data acquisition, and automated test equipment requiring stable component supply, long-term lifecycle support, and SO14 footprint compatibility.
Supply support for 74LVTH125D,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
This device belongs to Nexperia's 74LVT/LVTH advanced logic family, designed specifically for robust 3.3 V bus interfacing in industrial, networking, and instrumentation systems where hot-swap, mixed-voltage tolerance, and low static power are essential.
FAQ
What is the maximum input voltage the 74LVTH125D,118 can tolerate?
The device accepts input voltages up to +5.5 V regardless of VCC level, enabling direct connection to 5 V logic without level-shifting components. This overvoltage tolerance is guaranteed per datasheet Table 4 and applies to all data and enable inputs under normal operating conditions.
Does the 74LVTH125D,118 require external pull-up resistors on unused inputs?
No. Its integrated bus-hold circuitry actively maintains the last valid logic state on unconnected inputs, drawing only 75–150 μA at VI = 0.8 V. This eliminates the need for external pull-up or pull-down resistors, reducing component count and layout complexity.
How does the IOFF feature protect the device during partial power-down?
When VCC drops to 0 V, the IOFF circuitry disables all outputs and limits leakage current to ±100 μA-even if inputs or outputs remain at 4.5 V. This prevents destructive back-current flow through powered-down sections of a multi-rail system during hot-swap or staged power sequencing.
Can the 74LVTH125D,118 drive standard TTL loads?
Yes. With –32 mA source and +64 mA sink capability, it meets or exceeds standard TTL input current requirements (IIH ≤ 40 μA, IIL ≤ 1.6 mA). Its VOH ≥ 2.0 V and VOL ≤ 0.55 V at full drive ensure reliable HIGH/LOW recognition by 74LS and 74ALS families.
74LVTH125D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVTH
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74LVTH125D,118 FAQ
1.How can I place an order for 74LVTH125D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH125D,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 74LVTH125D,118 reliable?
The price and inventory of 74LVTH125D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH125D,118 is usually 5 days.
3.What payment methods are accepted for 74LVTH125D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH125D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVTH125D,118?
74LVTH125D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH125D,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 74LVTH125D,118?
For technical support, including 74LVTH125D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH125D,118 requirements.
6.How does Aetrix verify that 74LVTH125D,118 is sourced from the original manufacturer or authorized distributors?
All 74LVTH125D,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 74LVTH125D,118 meets industry standards.
7.What is the process for return or replacement of 74LVTH125D,118?
All 74LVTH125D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH125D,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 74LVTH125D,118 part is unused and in its original packaging.
Return procedure for 74LVTH125D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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